Rheumatology

TOPLINE:

Patients with late-onset axial spondyloarthritis (axSpA) are less likely to be positive for human leukocyte antigen B27 (HLA-B27) and have a family history of SpA; they are more likely to present with peripheral arthritis.

METHODOLOGY:

• Researchers conducted a multicenter cross-sectional study including 2165 patients with a clinical diagnosis of axSpA who were identified from the Rheumatic Diseases Portuguese Register from June 2008 to December 2022.
• Patients with symptom onset at or after 45 years of age were referred as late-onset axSpA, whereas those with symptom onset before 45 years as early-onset axSpA.
• Overall, 273 had a diagnosis of late-onset axSpA (mean age at symptom onset, 51.4 years; 55% men) and 1892 had a diagnosis of early-onset axSpA (mean age at symptom onset, 28.9 years; 56% men).
• Independent associations between demographic, clinical, imaging, and treatment characteristics and late-onset axSpA were tested using multivariable logistic regression models.

TAKEAWAY:

• Patients with late-onset axSpA were less likely to be positive for HLA-B27 (51% vs 65%; P < .001) and to have a family history of SpA (8% vs 14%; P < .01), have inflammatory back pain (81% vs 88%; P < .01), and have acute anterior uveitis (13% vs 20%; P < .01) than those with early-onset axSpA.
• Patients with late-onset axSpA had a higher likelihood of having peripheral arthritis than those with early-onset axSpA (36% vs 28%; P < .05).
• The odds of having late-onset axSpA were lower in patients with HLA-B27 positivity (adjusted odds ratio [aOR], 0.6; 95% CI, 0.4-0.7), a family history of SpA (aOR, 0.6; 95% CI, 0.4-0.9), inflammatory back pain (aOR, 0.5; 95% CI, 0.4-0.8), and acute anterior uveitis (aOR, 0.6; 95% CI, 0.4-0.9).
• Conversely, patients with peripheral arthritis had a higher likelihood of developing late-onset axSpA (aOR, 1.5; 95% CI, 1.1-1.9).

IN PRACTICE:

“In this study, we found that [late-onset axSpA] may represent a distinct phenotype with a weaker association with HLA-B27,” the authors wrote. “Whether [late-onset axSpA] comprises a subset of axSpA with a (possibly) different genetic or epigenetic background or rather translates difficulties in recognizing a less typical disease presentation and a population without a genetic marker which can make the diagnostic process more challenging merits further investigation.”

SOURCE:

The study was led by Margarida Lucas Rocha, MD, Department of Rheumatology, ULSA, Faro, Portugal. It was published online in Joint Bone Spine.

LIMITATIONS:

No limitations were reported in the study.

DISCLOSURES:

No relevant funding information and conflicts of interest were disclosed by the authors.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE:

Patients with late-onset axial spondyloarthritis (axSpA) are less likely to be positive for human leukocyte antigen B27 (HLA-B27) and have a family history of SpA; they are more likely to present with peripheral arthritis.

METHODOLOGY:

• Researchers conducted a multicenter cross-sectional study including 2165 patients with a clinical diagnosis of axSpA who were identified from the Rheumatic Diseases Portuguese Register from June 2008 to December 2022.
• Patients with symptom onset at or after 45 years of age were referred as late-onset axSpA, whereas those with symptom onset before 45 years as early-onset axSpA.
• Overall, 273 had a diagnosis of late-onset axSpA (mean age at symptom onset, 51.4 years; 55% men) and 1892 had a diagnosis of early-onset axSpA (mean age at symptom onset, 28.9 years; 56% men).
• Independent associations between demographic, clinical, imaging, and treatment characteristics and late-onset axSpA were tested using multivariable logistic regression models.

TAKEAWAY:

• Patients with late-onset axSpA were less likely to be positive for HLA-B27 (51% vs 65%; P < .001) and to have a family history of SpA (8% vs 14%; P < .01), have inflammatory back pain (81% vs 88%; P < .01), and have acute anterior uveitis (13% vs 20%; P < .01) than those with early-onset axSpA.
• Patients with late-onset axSpA had a higher likelihood of having peripheral arthritis than those with early-onset axSpA (36% vs 28%; P < .05).
• The odds of having late-onset axSpA were lower in patients with HLA-B27 positivity (adjusted odds ratio [aOR], 0.6; 95% CI, 0.4-0.7), a family history of SpA (aOR, 0.6; 95% CI, 0.4-0.9), inflammatory back pain (aOR, 0.5; 95% CI, 0.4-0.8), and acute anterior uveitis (aOR, 0.6; 95% CI, 0.4-0.9).
• Conversely, patients with peripheral arthritis had a higher likelihood of developing late-onset axSpA (aOR, 1.5; 95% CI, 1.1-1.9).

IN PRACTICE:

“In this study, we found that [late-onset axSpA] may represent a distinct phenotype with a weaker association with HLA-B27,” the authors wrote. “Whether [late-onset axSpA] comprises a subset of axSpA with a (possibly) different genetic or epigenetic background or rather translates difficulties in recognizing a less typical disease presentation and a population without a genetic marker which can make the diagnostic process more challenging merits further investigation.”

SOURCE:

The study was led by Margarida Lucas Rocha, MD, Department of Rheumatology, ULSA, Faro, Portugal. It was published online in Joint Bone Spine.

LIMITATIONS:

No limitations were reported in the study.

DISCLOSURES:

No relevant funding information and conflicts of interest were disclosed by the authors.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE:

Patients with late-onset axial spondyloarthritis (axSpA) are less likely to be positive for human leukocyte antigen B27 (HLA-B27) and have a family history of SpA; they are more likely to present with peripheral arthritis.

METHODOLOGY:

• Researchers conducted a multicenter cross-sectional study including 2165 patients with a clinical diagnosis of axSpA who were identified from the Rheumatic Diseases Portuguese Register from June 2008 to December 2022.
• Patients with symptom onset at or after 45 years of age were referred as late-onset axSpA, whereas those with symptom onset before 45 years as early-onset axSpA.
• Overall, 273 had a diagnosis of late-onset axSpA (mean age at symptom onset, 51.4 years; 55% men) and 1892 had a diagnosis of early-onset axSpA (mean age at symptom onset, 28.9 years; 56% men).
• Independent associations between demographic, clinical, imaging, and treatment characteristics and late-onset axSpA were tested using multivariable logistic regression models.

TAKEAWAY:

• Patients with late-onset axSpA were less likely to be positive for HLA-B27 (51% vs 65%; P < .001) and to have a family history of SpA (8% vs 14%; P < .01), have inflammatory back pain (81% vs 88%; P < .01), and have acute anterior uveitis (13% vs 20%; P < .01) than those with early-onset axSpA.
• Patients with late-onset axSpA had a higher likelihood of having peripheral arthritis than those with early-onset axSpA (36% vs 28%; P < .05).
• The odds of having late-onset axSpA were lower in patients with HLA-B27 positivity (adjusted odds ratio [aOR], 0.6; 95% CI, 0.4-0.7), a family history of SpA (aOR, 0.6; 95% CI, 0.4-0.9), inflammatory back pain (aOR, 0.5; 95% CI, 0.4-0.8), and acute anterior uveitis (aOR, 0.6; 95% CI, 0.4-0.9).
• Conversely, patients with peripheral arthritis had a higher likelihood of developing late-onset axSpA (aOR, 1.5; 95% CI, 1.1-1.9).

IN PRACTICE:

“In this study, we found that [late-onset axSpA] may represent a distinct phenotype with a weaker association with HLA-B27,” the authors wrote. “Whether [late-onset axSpA] comprises a subset of axSpA with a (possibly) different genetic or epigenetic background or rather translates difficulties in recognizing a less typical disease presentation and a population without a genetic marker which can make the diagnostic process more challenging merits further investigation.”

SOURCE:

The study was led by Margarida Lucas Rocha, MD, Department of Rheumatology, ULSA, Faro, Portugal. It was published online in Joint Bone Spine.

LIMITATIONS:

No limitations were reported in the study.

DISCLOSURES:

No relevant funding information and conflicts of interest were disclosed by the authors.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE:

Individuals at an increased risk of developing rheumatoid arthritis (RA) have a unique gut microbial composition, characterized by a notable increase in certain strains of Prevotella bacteria. These changes begin approximately 10 months prior to the onset of RA.

METHODOLOGY:

• In this cross-sectional and longitudinal observational study, researchers aimed to identify microbial associations in the early stages of RA, focusing specifically on Prevotellaceae strains.
• The cross-sectional analysis assessed the gut microbiome profiles of 124 individuals at risk of developing RA, 7 patients with newly diagnosed RA, and 22 healthy control individuals free of musculoskeletal symptoms at five different time points over a period of 15 months; 30 patients progressed to RA during the study period.
• The longitudinal analysis was performed in 19 individuals at risk of developing RA, of whom 5 progressed to the condition.
• The risk of developing RA was identified by the presence of anti–cyclic citrullinated protein (anti-CCP) antibodies and the onset of musculoskeletal pain in the preceding 3 months.
• Gut microbiome taxonomic alterations were investigated using 16S rRNA amplicon sequencing and confirmed with shotgun metagenomic DNA sequencing of 49 samples.

TAKEAWAY:

• Gut microbial diversity, particularly alpha diversity, was notably reduced in CCP+ individuals at risk of developing RA vs healthy control individuals (P = .012). Recognized risk factors for RA development such as the presence of rheumatoid factor antibodies and the human leukocyte antigen shared epitope, were significantly linked to diminished gut microbial diversity, in addition to steroid use.
• A specific Prevotellaceae strain (ASV2058) was found to be overabundant in CCP+ individuals at risk of developing RA and in those newly diagnosed with the condition but not in healthy control individuals. Further analysis showed that enrichment and depletion of three and five strains of Prevotellaceae, respectively, were associated with the progression to RA in CCP+ individuals.
• CCP+ individuals who progressed to RA were found to have substantial fluctuations in gut microbiome profiles around 10 months before clinical diagnosis; however, these profiles were relatively stable 10-15 months before the onset of RA, suggesting that changes in the microbiome occur at a later stage.
• Patients with new-onset RA were found to have distinct metabolic shifts, particularly in pathways related to amino acid and energy metabolism.

IN PRACTICE:

“Individuals at risk of RA harbor a distinctive gut microbial composition, including but not limited to an overabundance of Prevotellaceae species. This microbial signature is consistent and correlates with traditional RA risk factors,” the authors wrote.

SOURCE:

The study was led by Christopher M. Rooney, MD, PhD, University of Leeds in England. It was published online in Annals of the Rheumatic Diseases.

LIMITATIONS:

The small longitudinal sample size and lack of a 1:1 longitudinal comparison between CCP+ individuals at risk for RA and healthy control individuals were major limitations of this study. The new-onset RA cohort was heterogeneous, reflecting the practical constraints of recruitment from standard care clinics. Integrated transcriptomic or metabolomic data were unavailable, restricting interpretation to potential rather than confirmed metabolic activity.

DISCLOSURES:

This study was funded by personal fellowships received by the lead author from Versus Arthritis, Leeds Cares, and a National Institute for Health Research Clinical Lectureship. Some authors disclosed receiving grants, funding, consulting fees, or honoraria from various pharmaceutical companies.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE:

Individuals at an increased risk of developing rheumatoid arthritis (RA) have a unique gut microbial composition, characterized by a notable increase in certain strains of Prevotella bacteria. These changes begin approximately 10 months prior to the onset of RA.

METHODOLOGY:

• In this cross-sectional and longitudinal observational study, researchers aimed to identify microbial associations in the early stages of RA, focusing specifically on Prevotellaceae strains.
• The cross-sectional analysis assessed the gut microbiome profiles of 124 individuals at risk of developing RA, 7 patients with newly diagnosed RA, and 22 healthy control individuals free of musculoskeletal symptoms at five different time points over a period of 15 months; 30 patients progressed to RA during the study period.
• The longitudinal analysis was performed in 19 individuals at risk of developing RA, of whom 5 progressed to the condition.
• The risk of developing RA was identified by the presence of anti–cyclic citrullinated protein (anti-CCP) antibodies and the onset of musculoskeletal pain in the preceding 3 months.
• Gut microbiome taxonomic alterations were investigated using 16S rRNA amplicon sequencing and confirmed with shotgun metagenomic DNA sequencing of 49 samples.

TAKEAWAY:

• Gut microbial diversity, particularly alpha diversity, was notably reduced in CCP+ individuals at risk of developing RA vs healthy control individuals (P = .012). Recognized risk factors for RA development such as the presence of rheumatoid factor antibodies and the human leukocyte antigen shared epitope, were significantly linked to diminished gut microbial diversity, in addition to steroid use.
• A specific Prevotellaceae strain (ASV2058) was found to be overabundant in CCP+ individuals at risk of developing RA and in those newly diagnosed with the condition but not in healthy control individuals. Further analysis showed that enrichment and depletion of three and five strains of Prevotellaceae, respectively, were associated with the progression to RA in CCP+ individuals.
• CCP+ individuals who progressed to RA were found to have substantial fluctuations in gut microbiome profiles around 10 months before clinical diagnosis; however, these profiles were relatively stable 10-15 months before the onset of RA, suggesting that changes in the microbiome occur at a later stage.
• Patients with new-onset RA were found to have distinct metabolic shifts, particularly in pathways related to amino acid and energy metabolism.

IN PRACTICE:

“Individuals at risk of RA harbor a distinctive gut microbial composition, including but not limited to an overabundance of Prevotellaceae species. This microbial signature is consistent and correlates with traditional RA risk factors,” the authors wrote.

SOURCE:

The study was led by Christopher M. Rooney, MD, PhD, University of Leeds in England. It was published online in Annals of the Rheumatic Diseases.

LIMITATIONS:

The small longitudinal sample size and lack of a 1:1 longitudinal comparison between CCP+ individuals at risk for RA and healthy control individuals were major limitations of this study. The new-onset RA cohort was heterogeneous, reflecting the practical constraints of recruitment from standard care clinics. Integrated transcriptomic or metabolomic data were unavailable, restricting interpretation to potential rather than confirmed metabolic activity.

DISCLOSURES:

This study was funded by personal fellowships received by the lead author from Versus Arthritis, Leeds Cares, and a National Institute for Health Research Clinical Lectureship. Some authors disclosed receiving grants, funding, consulting fees, or honoraria from various pharmaceutical companies.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE:

Individuals at an increased risk of developing rheumatoid arthritis (RA) have a unique gut microbial composition, characterized by a notable increase in certain strains of Prevotella bacteria. These changes begin approximately 10 months prior to the onset of RA.

METHODOLOGY:

• In this cross-sectional and longitudinal observational study, researchers aimed to identify microbial associations in the early stages of RA, focusing specifically on Prevotellaceae strains.
• The cross-sectional analysis assessed the gut microbiome profiles of 124 individuals at risk of developing RA, 7 patients with newly diagnosed RA, and 22 healthy control individuals free of musculoskeletal symptoms at five different time points over a period of 15 months; 30 patients progressed to RA during the study period.
• The longitudinal analysis was performed in 19 individuals at risk of developing RA, of whom 5 progressed to the condition.
• The risk of developing RA was identified by the presence of anti–cyclic citrullinated protein (anti-CCP) antibodies and the onset of musculoskeletal pain in the preceding 3 months.
• Gut microbiome taxonomic alterations were investigated using 16S rRNA amplicon sequencing and confirmed with shotgun metagenomic DNA sequencing of 49 samples.

TAKEAWAY:

• Gut microbial diversity, particularly alpha diversity, was notably reduced in CCP+ individuals at risk of developing RA vs healthy control individuals (P = .012). Recognized risk factors for RA development such as the presence of rheumatoid factor antibodies and the human leukocyte antigen shared epitope, were significantly linked to diminished gut microbial diversity, in addition to steroid use.
• A specific Prevotellaceae strain (ASV2058) was found to be overabundant in CCP+ individuals at risk of developing RA and in those newly diagnosed with the condition but not in healthy control individuals. Further analysis showed that enrichment and depletion of three and five strains of Prevotellaceae, respectively, were associated with the progression to RA in CCP+ individuals.
• CCP+ individuals who progressed to RA were found to have substantial fluctuations in gut microbiome profiles around 10 months before clinical diagnosis; however, these profiles were relatively stable 10-15 months before the onset of RA, suggesting that changes in the microbiome occur at a later stage.
• Patients with new-onset RA were found to have distinct metabolic shifts, particularly in pathways related to amino acid and energy metabolism.

IN PRACTICE:

“Individuals at risk of RA harbor a distinctive gut microbial composition, including but not limited to an overabundance of Prevotellaceae species. This microbial signature is consistent and correlates with traditional RA risk factors,” the authors wrote.

SOURCE:

The study was led by Christopher M. Rooney, MD, PhD, University of Leeds in England. It was published online in Annals of the Rheumatic Diseases.

LIMITATIONS:

The small longitudinal sample size and lack of a 1:1 longitudinal comparison between CCP+ individuals at risk for RA and healthy control individuals were major limitations of this study. The new-onset RA cohort was heterogeneous, reflecting the practical constraints of recruitment from standard care clinics. Integrated transcriptomic or metabolomic data were unavailable, restricting interpretation to potential rather than confirmed metabolic activity.

DISCLOSURES:

This study was funded by personal fellowships received by the lead author from Versus Arthritis, Leeds Cares, and a National Institute for Health Research Clinical Lectureship. Some authors disclosed receiving grants, funding, consulting fees, or honoraria from various pharmaceutical companies.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

“Petechial rash often prompts further investigation into hematological, dermatological, or vasculitis causes. However, if the above investigations are negative and skin biopsy has not revealed a cause, there is a Renaissance-era diagnosis that is often overlooked but is easily investigated and treated,” wrote Andrew Dermawan, MD, and colleagues from Sir Charles Gairdner Hospital in Nedlands, Australia, in BMJ Case Reports. The diagnosis they highlight is scurvy, a disease that has faded from common medical concern but is reemerging, partly because of the rise in bariatric surgery.

Diagnosing Scurvy in the 2020s

In their article, Dermawan and colleagues present the case of a 50-year-old man with a bilateral petechial rash on his lower limbs, without any history of trauma. The patient, who exhibited no infectious symptoms, also had gross hematuria, microcytic anemia, mild neutropenia, and lymphopenia. Tests for autoimmune and hematological diseases were negative, as were abdominal and leg CT scans, ruling out abdominal hemorrhage and vasculitis. Additionally, a skin biopsy showed no causative findings.

The doctors noted that the patient had undergone sleeve gastrectomy, prompting them to inquire about his diet. They discovered that, because of financial difficulties, his diet primarily consisted of processed foods with little to no fruits or vegetables, and he had stopped taking supplements recommended by his gastroenterologist. Further tests revealed a vitamin D deficiency and a severe deficiency in vitamin C. With the diagnosis of scurvy confirmed, the doctors treated the patient with 1000 mg of ascorbic acid daily, along with cholecalciferol, folic acid, and a multivitamin complex, leading to a complete resolution of his symptoms.
 

Risk Factors Then and Now

Scurvy can present with a range of symptoms, including petechiae, perifollicular hemorrhage, ecchymosis, gingivitis, edema, anemia, delayed wound healing, malaise, weakness, joint swelling, arthralgia, anorexia, neuropathy, and vasomotor instability. It can cause mucosal and gastric hemorrhages, and if left untreated, it can lead to fatal bleeding.

Historically known as “sailors’ disease,” scurvy plagued men on long voyages who lacked access to fresh fruits or vegetables and thus did not get enough vitamin C. In 1747, James Lind, a British physician in the Royal Navy, demonstrated that the consumption of oranges and lemons could combat scurvy.

Today’s risk factors for scurvy include malnutrition, gastrointestinal disorders (eg, chronic inflammatory bowel diseases), alcohol and tobacco use, eating disorders, psychiatric illnesses, dialysis, and the use of medications that reduce the absorption of ascorbic acid (such as corticosteroids and proton pump inhibitors).

Scurvy remains more common among individuals with unfavorable socioeconomic conditions. The authors of the study emphasize how the rising cost of living — specifically in Australia but applicable elsewhere — is changing eating habits, leading to a high consumption of low-cost, nutritionally poor foods.

Poverty has always been a risk factor for scurvy, but today there may be an additional cause: bariatric surgery. Patients undergoing these procedures are at a risk for deficiencies in fat-soluble vitamins A, D, E, and K, and if their diet is inadequate, they may also experience a vitamin C deficiency. Awareness of this can facilitate the timely diagnosis of scurvy in these patients.

This story was translated from Univadis Italy using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

“Petechial rash often prompts further investigation into hematological, dermatological, or vasculitis causes. However, if the above investigations are negative and skin biopsy has not revealed a cause, there is a Renaissance-era diagnosis that is often overlooked but is easily investigated and treated,” wrote Andrew Dermawan, MD, and colleagues from Sir Charles Gairdner Hospital in Nedlands, Australia, in BMJ Case Reports. The diagnosis they highlight is scurvy, a disease that has faded from common medical concern but is reemerging, partly because of the rise in bariatric surgery.

Diagnosing Scurvy in the 2020s

In their article, Dermawan and colleagues present the case of a 50-year-old man with a bilateral petechial rash on his lower limbs, without any history of trauma. The patient, who exhibited no infectious symptoms, also had gross hematuria, microcytic anemia, mild neutropenia, and lymphopenia. Tests for autoimmune and hematological diseases were negative, as were abdominal and leg CT scans, ruling out abdominal hemorrhage and vasculitis. Additionally, a skin biopsy showed no causative findings.

The doctors noted that the patient had undergone sleeve gastrectomy, prompting them to inquire about his diet. They discovered that, because of financial difficulties, his diet primarily consisted of processed foods with little to no fruits or vegetables, and he had stopped taking supplements recommended by his gastroenterologist. Further tests revealed a vitamin D deficiency and a severe deficiency in vitamin C. With the diagnosis of scurvy confirmed, the doctors treated the patient with 1000 mg of ascorbic acid daily, along with cholecalciferol, folic acid, and a multivitamin complex, leading to a complete resolution of his symptoms.
 

Risk Factors Then and Now

Scurvy can present with a range of symptoms, including petechiae, perifollicular hemorrhage, ecchymosis, gingivitis, edema, anemia, delayed wound healing, malaise, weakness, joint swelling, arthralgia, anorexia, neuropathy, and vasomotor instability. It can cause mucosal and gastric hemorrhages, and if left untreated, it can lead to fatal bleeding.

Historically known as “sailors’ disease,” scurvy plagued men on long voyages who lacked access to fresh fruits or vegetables and thus did not get enough vitamin C. In 1747, James Lind, a British physician in the Royal Navy, demonstrated that the consumption of oranges and lemons could combat scurvy.

Today’s risk factors for scurvy include malnutrition, gastrointestinal disorders (eg, chronic inflammatory bowel diseases), alcohol and tobacco use, eating disorders, psychiatric illnesses, dialysis, and the use of medications that reduce the absorption of ascorbic acid (such as corticosteroids and proton pump inhibitors).

Scurvy remains more common among individuals with unfavorable socioeconomic conditions. The authors of the study emphasize how the rising cost of living — specifically in Australia but applicable elsewhere — is changing eating habits, leading to a high consumption of low-cost, nutritionally poor foods.

Poverty has always been a risk factor for scurvy, but today there may be an additional cause: bariatric surgery. Patients undergoing these procedures are at a risk for deficiencies in fat-soluble vitamins A, D, E, and K, and if their diet is inadequate, they may also experience a vitamin C deficiency. Awareness of this can facilitate the timely diagnosis of scurvy in these patients.

This story was translated from Univadis Italy using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

“Petechial rash often prompts further investigation into hematological, dermatological, or vasculitis causes. However, if the above investigations are negative and skin biopsy has not revealed a cause, there is a Renaissance-era diagnosis that is often overlooked but is easily investigated and treated,” wrote Andrew Dermawan, MD, and colleagues from Sir Charles Gairdner Hospital in Nedlands, Australia, in BMJ Case Reports. The diagnosis they highlight is scurvy, a disease that has faded from common medical concern but is reemerging, partly because of the rise in bariatric surgery.

Diagnosing Scurvy in the 2020s

In their article, Dermawan and colleagues present the case of a 50-year-old man with a bilateral petechial rash on his lower limbs, without any history of trauma. The patient, who exhibited no infectious symptoms, also had gross hematuria, microcytic anemia, mild neutropenia, and lymphopenia. Tests for autoimmune and hematological diseases were negative, as were abdominal and leg CT scans, ruling out abdominal hemorrhage and vasculitis. Additionally, a skin biopsy showed no causative findings.

The doctors noted that the patient had undergone sleeve gastrectomy, prompting them to inquire about his diet. They discovered that, because of financial difficulties, his diet primarily consisted of processed foods with little to no fruits or vegetables, and he had stopped taking supplements recommended by his gastroenterologist. Further tests revealed a vitamin D deficiency and a severe deficiency in vitamin C. With the diagnosis of scurvy confirmed, the doctors treated the patient with 1000 mg of ascorbic acid daily, along with cholecalciferol, folic acid, and a multivitamin complex, leading to a complete resolution of his symptoms.
 

Risk Factors Then and Now

Scurvy can present with a range of symptoms, including petechiae, perifollicular hemorrhage, ecchymosis, gingivitis, edema, anemia, delayed wound healing, malaise, weakness, joint swelling, arthralgia, anorexia, neuropathy, and vasomotor instability. It can cause mucosal and gastric hemorrhages, and if left untreated, it can lead to fatal bleeding.

Historically known as “sailors’ disease,” scurvy plagued men on long voyages who lacked access to fresh fruits or vegetables and thus did not get enough vitamin C. In 1747, James Lind, a British physician in the Royal Navy, demonstrated that the consumption of oranges and lemons could combat scurvy.

Today’s risk factors for scurvy include malnutrition, gastrointestinal disorders (eg, chronic inflammatory bowel diseases), alcohol and tobacco use, eating disorders, psychiatric illnesses, dialysis, and the use of medications that reduce the absorption of ascorbic acid (such as corticosteroids and proton pump inhibitors).

Scurvy remains more common among individuals with unfavorable socioeconomic conditions. The authors of the study emphasize how the rising cost of living — specifically in Australia but applicable elsewhere — is changing eating habits, leading to a high consumption of low-cost, nutritionally poor foods.

Poverty has always been a risk factor for scurvy, but today there may be an additional cause: bariatric surgery. Patients undergoing these procedures are at a risk for deficiencies in fat-soluble vitamins A, D, E, and K, and if their diet is inadequate, they may also experience a vitamin C deficiency. Awareness of this can facilitate the timely diagnosis of scurvy in these patients.

This story was translated from Univadis Italy using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

With the discovery of autoantibodies and other risk factors for rheumatoid arthritis (RA), researchers developed clinical trials to see whether the disease can be prevented entirely. In the past 10 years, a number of these trials have concluded, with variable results.

While some trials demonstrated no effect at all, others showed that medical intervention can delay the onset of disease in certain populations and even reduce the rates of progression to RA. These completed trials also offer researchers the chance to identify opportunities to improve RA prevention trials moving forward.

“We’re looking at all that data and trying to figure out what the next step is going to be,” said Kevin Deane, MD, PhD, a professor of medicine and a rheumatologist at the University of Colorado School of Medicine, Aurora.

Key lessons include the need for improved risk stratification tools and better understanding of RA pathogenesis, he said.
 

The Research So Far

All RA prevention trials except for one have been completed and/or published within the past decade, bringing valuable insights to the field. (See chart below.)

MDedge News

Atorvastatin (STAPRA) and hydroxychloroquine (StopRA) proved ineffective in preventing the onset of RA, and both trials were stopped early. Rituximab and methotrexate (MTX) both delayed the onset of RA, but the effect disappeared by the end of the follow-up periods.

However, the 2-year results from the TREAT EARLIER trial showed that compared with patients given placebo, those given MTX showed improved MRI-detected joint inflammation, physical functioning, and reported symptoms.

The 4-year analysis of the trial further risk stratified participants and found that MTX showed a preventive effect in anti–citrullinated protein antibody (ACPA)–negative participants at an increased risk for RA.

Abatacept also showed promise in preventing RA in two separate trials. In the ARIAA trial, compared with placebo, 6 months of treatment with abatacept reduced MRI inflammation and symptoms and lowered the rates of progression to RA. This treatment effect lessened during the 1-year follow-up period, but the difference between the two groups was still significant at 18 months.

In the APIPPRA trial, 12 months of treatment with abatacept improved subclinical inflammation and quality-of-life measures in participants and reduced the rates of progression to RA through another 12 months of observation. However, during this post-treatment follow-up period, the treatment effect began to diminish.

While there have been some promising findings — not only in disease prevention but also in disease modification — these studies all looked at different patient groups, noted Kulveer Mankia, MA, DM, an associate professor and consulting rheumatologist at the Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds in England.

“You have disparate, different inclusion criteria in different studies, all of which take years to complete,” he said. For example, while the TREAT EARLIER trial recruited patients with joint pain and subclinical joint inflammation via MRI, regardless of autoantibody status, the APIPPRA trial enrolled patients that were both ACPA+ and rheumatoid factor (RF)+ with joint pain.

“You’re left extrapolating as to whether [these interventions] will work in different at-risk populations,” he said.

Even with specific inclusion criteria in each study, there can still be heterogeneity in risk within a study group, Deane said. In the TREAT EARLIER study, 18%-20% of participants ultimately developed RA over the study period, which is lower than expected.

“While it seemed like a pretty high-risk group, it wasn’t as high risk as we thought,” he said, “and that’s why we’ve gone back to the drawing board.”
 

Risk Stratification Efforts

There are now two ongoing joint efforts by the American College of Rheumatology (ACR) and the European Alliance of Associations for Rheumatology (EULAR) to define these populations and “bring some consensus to the field,” Mankia said.

Voisin / Science Source

The first aims to create a unanimous risk stratification tool for future RA prevention studies. The proposed system, devised for individuals with new joint symptoms who are at a risk for RA, was presented at the EULAR 2024 annual meeting and will be further discussed at the upcoming ACR 2024 annual meeting in Washington, DC.

The system uses a point system based on six criteria — three lab tests and three criteria commonly assessed in clinical practice:

• Morning stiffness
• Patient-reported joint swelling
• Difficulty making a fist
• Increased C-reactive protein
• RF positivity
• ACPA positivity

These criteria were picked so that the risk stratification tool can be used without imaging; however, the inclusion of MRI can further refine the score.

The ACR-EULAR task force that created the tool has emphasized that this criterion is specifically designed for research purposes and should not be used in clinical practice. Using this stratification tool should allow future clinical studies to group patients by similar risk, Deane said.

“Not that all studies have to look at exactly the same people, but each study should have similar risk stratification,” he said.

The second ACR-EULAR joint effort is taking a population-based approach to risk stratification, Deane said, to better predict RA risk in individuals without common symptoms like joint pain.

The aim is to create something analogous to the Framingham Risk Score in predicting cardiovascular disease, in which simple variables like total cholesterol, high-density lipoprotein cholesterol, systolic blood pressure, and smoking status can be used to calculate an individual’s 10-year risk for CVD, Deane explained.

The second approach could also identify patients earlier in the progression to RA, which may be easier to treat than later stages of disease.
 

Understanding RA Origins

However, treating an earlier stage of disease might require a different approach. Up to this point, medical interventions for RA prevention used drugs approved to treat RA, but inventions during the pre-RA stage — before any joint symptoms appear — might require targeting different immunologic pathways.

“The general concept is if there is a pre-RA stage when joints are not involved, that means all the immunologic abnormalities are probably happening somewhere else in the body,” he said. “The big question is: Where is that, and how exactly is that happening?”

One theory is that RA begins to develop in mucosal sites, such as the intestines or lungs, before it involves synovial joints.

“In the absence of resolution, these localized immune processes transition into a systemic process that targets the joints, either by direct effects of microbiota, molecular mimicry, and/or immune amplification,” wrote Deane and coauthors in a recent review article in Annals of the Rheumatic Diseases. “This, in turn, leads to inappropriate engagement of a range of effector mechanisms in both synovium and periarticular sites.”

Following this logic, the progression of the at-risk stage of RA could be considered a continuum along which there are multiple possible points for intervention. It’s also probable that the disease can develop through multiple pathways, Deane said.

“If you look at all the people who get rheumatoid arthritis, there’s probably no way those could have the same exact pathways,” he said. “There’s probably going to be different endotypes and understanding that is going to help us prevent disease in a better way.”
 

Looking Forward

Beyond improving risk stratification and understanding RA pathogenesis, researchers are also considering novel therapeutic approaches for future trials. Glucagon-like peptide 1 (GLP-1) receptor agonists could be worth exploring in RA prevention and treatment, said Jeffrey A. Sparks, MD, MMSc, a rheumatologist at Brigham and Women’s Hospital, Boston, Massachusetts.

These drugs — initially developed for diabetes — have already shown anti-inflammatory effects, and one study suggested that GLP-1s lowered the risk for major adverse cardiovascular events and all-cause mortality in individuals with immune-mediated inflammatory diseases. Obesity is a known risk factor for RA, so weight loss aided by GLP-1 drugs could also help reduce risk in certain patients. Clinical trials are needed to explore GLP-1s for both RA prevention and treatment, he said.

While prevention trials up to this point have used one-time, time-limited interventions, longer durations of medication or multiple rounds of therapy may be more efficacious. Even for trials that demonstrated the intervention arms had less progression to RA, this effect diminished once participants stopped the medication. In the ARIAA and APIPPRA trials using abatacept, “it wasn’t like we hit a reset button and [patients] just permanently now did not get rheumatoid arthritis,” Deane said, suggesting that alternative approaches should be explored.

“Future studies need to look at potentially longer doses of drug or lower doses of drug, or some combination that might be effective,” he said.

Deane received honoraria from Bristol-Myers Squibb, Thermo Fisher, and Werfen and grant funding from Janssen Research and Development and Gilead Sciences. Mankia received grant support from Gilead, Lilly, AstraZeneca, and Serac Life Sciences and honoraria or consultant fees from AbbVie, UCB, Lilly, Galapagos, DeepCure, Serac Life Sciences, AstraZeneca, and Zura Bio. Sparks received research support from Boehringer Ingelheim, Bristol-Myers Squibb, Janssen, and Sonoma Biotherapeutics. He consulted for AbbVie, Amgen, Boehringer Ingelheim, Bristol Myers Squibb, Gilead, Inova Diagnostics, Janssen, Merck, Mustang, Optum, Pfizer, ReCor Medical, Sana, Sobi, and UCB.

A version of this article first appeared on Medscape.com.

With the discovery of autoantibodies and other risk factors for rheumatoid arthritis (RA), researchers developed clinical trials to see whether the disease can be prevented entirely. In the past 10 years, a number of these trials have concluded, with variable results.

While some trials demonstrated no effect at all, others showed that medical intervention can delay the onset of disease in certain populations and even reduce the rates of progression to RA. These completed trials also offer researchers the chance to identify opportunities to improve RA prevention trials moving forward.

“We’re looking at all that data and trying to figure out what the next step is going to be,” said Kevin Deane, MD, PhD, a professor of medicine and a rheumatologist at the University of Colorado School of Medicine, Aurora.

Key lessons include the need for improved risk stratification tools and better understanding of RA pathogenesis, he said.
 

The Research So Far

All RA prevention trials except for one have been completed and/or published within the past decade, bringing valuable insights to the field. (See chart below.)

MDedge News

Atorvastatin (STAPRA) and hydroxychloroquine (StopRA) proved ineffective in preventing the onset of RA, and both trials were stopped early. Rituximab and methotrexate (MTX) both delayed the onset of RA, but the effect disappeared by the end of the follow-up periods.

However, the 2-year results from the TREAT EARLIER trial showed that compared with patients given placebo, those given MTX showed improved MRI-detected joint inflammation, physical functioning, and reported symptoms.

The 4-year analysis of the trial further risk stratified participants and found that MTX showed a preventive effect in anti–citrullinated protein antibody (ACPA)–negative participants at an increased risk for RA.

Abatacept also showed promise in preventing RA in two separate trials. In the ARIAA trial, compared with placebo, 6 months of treatment with abatacept reduced MRI inflammation and symptoms and lowered the rates of progression to RA. This treatment effect lessened during the 1-year follow-up period, but the difference between the two groups was still significant at 18 months.

In the APIPPRA trial, 12 months of treatment with abatacept improved subclinical inflammation and quality-of-life measures in participants and reduced the rates of progression to RA through another 12 months of observation. However, during this post-treatment follow-up period, the treatment effect began to diminish.

While there have been some promising findings — not only in disease prevention but also in disease modification — these studies all looked at different patient groups, noted Kulveer Mankia, MA, DM, an associate professor and consulting rheumatologist at the Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds in England.

“You have disparate, different inclusion criteria in different studies, all of which take years to complete,” he said. For example, while the TREAT EARLIER trial recruited patients with joint pain and subclinical joint inflammation via MRI, regardless of autoantibody status, the APIPPRA trial enrolled patients that were both ACPA+ and rheumatoid factor (RF)+ with joint pain.

“You’re left extrapolating as to whether [these interventions] will work in different at-risk populations,” he said.

Even with specific inclusion criteria in each study, there can still be heterogeneity in risk within a study group, Deane said. In the TREAT EARLIER study, 18%-20% of participants ultimately developed RA over the study period, which is lower than expected.

“While it seemed like a pretty high-risk group, it wasn’t as high risk as we thought,” he said, “and that’s why we’ve gone back to the drawing board.”
 

Risk Stratification Efforts

There are now two ongoing joint efforts by the American College of Rheumatology (ACR) and the European Alliance of Associations for Rheumatology (EULAR) to define these populations and “bring some consensus to the field,” Mankia said.

Voisin / Science Source

The first aims to create a unanimous risk stratification tool for future RA prevention studies. The proposed system, devised for individuals with new joint symptoms who are at a risk for RA, was presented at the EULAR 2024 annual meeting and will be further discussed at the upcoming ACR 2024 annual meeting in Washington, DC.

The system uses a point system based on six criteria — three lab tests and three criteria commonly assessed in clinical practice:

• Morning stiffness
• Patient-reported joint swelling
• Difficulty making a fist
• Increased C-reactive protein
• RF positivity
• ACPA positivity

These criteria were picked so that the risk stratification tool can be used without imaging; however, the inclusion of MRI can further refine the score.

The ACR-EULAR task force that created the tool has emphasized that this criterion is specifically designed for research purposes and should not be used in clinical practice. Using this stratification tool should allow future clinical studies to group patients by similar risk, Deane said.

“Not that all studies have to look at exactly the same people, but each study should have similar risk stratification,” he said.

The second ACR-EULAR joint effort is taking a population-based approach to risk stratification, Deane said, to better predict RA risk in individuals without common symptoms like joint pain.

The aim is to create something analogous to the Framingham Risk Score in predicting cardiovascular disease, in which simple variables like total cholesterol, high-density lipoprotein cholesterol, systolic blood pressure, and smoking status can be used to calculate an individual’s 10-year risk for CVD, Deane explained.

The second approach could also identify patients earlier in the progression to RA, which may be easier to treat than later stages of disease.
 

Understanding RA Origins

However, treating an earlier stage of disease might require a different approach. Up to this point, medical interventions for RA prevention used drugs approved to treat RA, but inventions during the pre-RA stage — before any joint symptoms appear — might require targeting different immunologic pathways.

“The general concept is if there is a pre-RA stage when joints are not involved, that means all the immunologic abnormalities are probably happening somewhere else in the body,” he said. “The big question is: Where is that, and how exactly is that happening?”

One theory is that RA begins to develop in mucosal sites, such as the intestines or lungs, before it involves synovial joints.

“In the absence of resolution, these localized immune processes transition into a systemic process that targets the joints, either by direct effects of microbiota, molecular mimicry, and/or immune amplification,” wrote Deane and coauthors in a recent review article in Annals of the Rheumatic Diseases. “This, in turn, leads to inappropriate engagement of a range of effector mechanisms in both synovium and periarticular sites.”

Following this logic, the progression of the at-risk stage of RA could be considered a continuum along which there are multiple possible points for intervention. It’s also probable that the disease can develop through multiple pathways, Deane said.

“If you look at all the people who get rheumatoid arthritis, there’s probably no way those could have the same exact pathways,” he said. “There’s probably going to be different endotypes and understanding that is going to help us prevent disease in a better way.”
 

Looking Forward

Beyond improving risk stratification and understanding RA pathogenesis, researchers are also considering novel therapeutic approaches for future trials. Glucagon-like peptide 1 (GLP-1) receptor agonists could be worth exploring in RA prevention and treatment, said Jeffrey A. Sparks, MD, MMSc, a rheumatologist at Brigham and Women’s Hospital, Boston, Massachusetts.

These drugs — initially developed for diabetes — have already shown anti-inflammatory effects, and one study suggested that GLP-1s lowered the risk for major adverse cardiovascular events and all-cause mortality in individuals with immune-mediated inflammatory diseases. Obesity is a known risk factor for RA, so weight loss aided by GLP-1 drugs could also help reduce risk in certain patients. Clinical trials are needed to explore GLP-1s for both RA prevention and treatment, he said.

While prevention trials up to this point have used one-time, time-limited interventions, longer durations of medication or multiple rounds of therapy may be more efficacious. Even for trials that demonstrated the intervention arms had less progression to RA, this effect diminished once participants stopped the medication. In the ARIAA and APIPPRA trials using abatacept, “it wasn’t like we hit a reset button and [patients] just permanently now did not get rheumatoid arthritis,” Deane said, suggesting that alternative approaches should be explored.

“Future studies need to look at potentially longer doses of drug or lower doses of drug, or some combination that might be effective,” he said.

Deane received honoraria from Bristol-Myers Squibb, Thermo Fisher, and Werfen and grant funding from Janssen Research and Development and Gilead Sciences. Mankia received grant support from Gilead, Lilly, AstraZeneca, and Serac Life Sciences and honoraria or consultant fees from AbbVie, UCB, Lilly, Galapagos, DeepCure, Serac Life Sciences, AstraZeneca, and Zura Bio. Sparks received research support from Boehringer Ingelheim, Bristol-Myers Squibb, Janssen, and Sonoma Biotherapeutics. He consulted for AbbVie, Amgen, Boehringer Ingelheim, Bristol Myers Squibb, Gilead, Inova Diagnostics, Janssen, Merck, Mustang, Optum, Pfizer, ReCor Medical, Sana, Sobi, and UCB.

A version of this article first appeared on Medscape.com.

With the discovery of autoantibodies and other risk factors for rheumatoid arthritis (RA), researchers developed clinical trials to see whether the disease can be prevented entirely. In the past 10 years, a number of these trials have concluded, with variable results.

While some trials demonstrated no effect at all, others showed that medical intervention can delay the onset of disease in certain populations and even reduce the rates of progression to RA. These completed trials also offer researchers the chance to identify opportunities to improve RA prevention trials moving forward.

“We’re looking at all that data and trying to figure out what the next step is going to be,” said Kevin Deane, MD, PhD, a professor of medicine and a rheumatologist at the University of Colorado School of Medicine, Aurora.

Key lessons include the need for improved risk stratification tools and better understanding of RA pathogenesis, he said.
 

The Research So Far

All RA prevention trials except for one have been completed and/or published within the past decade, bringing valuable insights to the field. (See chart below.)

MDedge News

Atorvastatin (STAPRA) and hydroxychloroquine (StopRA) proved ineffective in preventing the onset of RA, and both trials were stopped early. Rituximab and methotrexate (MTX) both delayed the onset of RA, but the effect disappeared by the end of the follow-up periods.

However, the 2-year results from the TREAT EARLIER trial showed that compared with patients given placebo, those given MTX showed improved MRI-detected joint inflammation, physical functioning, and reported symptoms.

The 4-year analysis of the trial further risk stratified participants and found that MTX showed a preventive effect in anti–citrullinated protein antibody (ACPA)–negative participants at an increased risk for RA.

Abatacept also showed promise in preventing RA in two separate trials. In the ARIAA trial, compared with placebo, 6 months of treatment with abatacept reduced MRI inflammation and symptoms and lowered the rates of progression to RA. This treatment effect lessened during the 1-year follow-up period, but the difference between the two groups was still significant at 18 months.

In the APIPPRA trial, 12 months of treatment with abatacept improved subclinical inflammation and quality-of-life measures in participants and reduced the rates of progression to RA through another 12 months of observation. However, during this post-treatment follow-up period, the treatment effect began to diminish.

While there have been some promising findings — not only in disease prevention but also in disease modification — these studies all looked at different patient groups, noted Kulveer Mankia, MA, DM, an associate professor and consulting rheumatologist at the Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds in England.

“You have disparate, different inclusion criteria in different studies, all of which take years to complete,” he said. For example, while the TREAT EARLIER trial recruited patients with joint pain and subclinical joint inflammation via MRI, regardless of autoantibody status, the APIPPRA trial enrolled patients that were both ACPA+ and rheumatoid factor (RF)+ with joint pain.

“You’re left extrapolating as to whether [these interventions] will work in different at-risk populations,” he said.

Even with specific inclusion criteria in each study, there can still be heterogeneity in risk within a study group, Deane said. In the TREAT EARLIER study, 18%-20% of participants ultimately developed RA over the study period, which is lower than expected.

“While it seemed like a pretty high-risk group, it wasn’t as high risk as we thought,” he said, “and that’s why we’ve gone back to the drawing board.”
 

Risk Stratification Efforts

There are now two ongoing joint efforts by the American College of Rheumatology (ACR) and the European Alliance of Associations for Rheumatology (EULAR) to define these populations and “bring some consensus to the field,” Mankia said.

Voisin / Science Source

The first aims to create a unanimous risk stratification tool for future RA prevention studies. The proposed system, devised for individuals with new joint symptoms who are at a risk for RA, was presented at the EULAR 2024 annual meeting and will be further discussed at the upcoming ACR 2024 annual meeting in Washington, DC.

The system uses a point system based on six criteria — three lab tests and three criteria commonly assessed in clinical practice:

• Morning stiffness
• Patient-reported joint swelling
• Difficulty making a fist
• Increased C-reactive protein
• RF positivity
• ACPA positivity

These criteria were picked so that the risk stratification tool can be used without imaging; however, the inclusion of MRI can further refine the score.

The ACR-EULAR task force that created the tool has emphasized that this criterion is specifically designed for research purposes and should not be used in clinical practice. Using this stratification tool should allow future clinical studies to group patients by similar risk, Deane said.

“Not that all studies have to look at exactly the same people, but each study should have similar risk stratification,” he said.

The second ACR-EULAR joint effort is taking a population-based approach to risk stratification, Deane said, to better predict RA risk in individuals without common symptoms like joint pain.

The aim is to create something analogous to the Framingham Risk Score in predicting cardiovascular disease, in which simple variables like total cholesterol, high-density lipoprotein cholesterol, systolic blood pressure, and smoking status can be used to calculate an individual’s 10-year risk for CVD, Deane explained.

The second approach could also identify patients earlier in the progression to RA, which may be easier to treat than later stages of disease.
 

Understanding RA Origins

However, treating an earlier stage of disease might require a different approach. Up to this point, medical interventions for RA prevention used drugs approved to treat RA, but inventions during the pre-RA stage — before any joint symptoms appear — might require targeting different immunologic pathways.

“The general concept is if there is a pre-RA stage when joints are not involved, that means all the immunologic abnormalities are probably happening somewhere else in the body,” he said. “The big question is: Where is that, and how exactly is that happening?”

One theory is that RA begins to develop in mucosal sites, such as the intestines or lungs, before it involves synovial joints.

“In the absence of resolution, these localized immune processes transition into a systemic process that targets the joints, either by direct effects of microbiota, molecular mimicry, and/or immune amplification,” wrote Deane and coauthors in a recent review article in Annals of the Rheumatic Diseases. “This, in turn, leads to inappropriate engagement of a range of effector mechanisms in both synovium and periarticular sites.”

Following this logic, the progression of the at-risk stage of RA could be considered a continuum along which there are multiple possible points for intervention. It’s also probable that the disease can develop through multiple pathways, Deane said.

“If you look at all the people who get rheumatoid arthritis, there’s probably no way those could have the same exact pathways,” he said. “There’s probably going to be different endotypes and understanding that is going to help us prevent disease in a better way.”
 

Looking Forward

Beyond improving risk stratification and understanding RA pathogenesis, researchers are also considering novel therapeutic approaches for future trials. Glucagon-like peptide 1 (GLP-1) receptor agonists could be worth exploring in RA prevention and treatment, said Jeffrey A. Sparks, MD, MMSc, a rheumatologist at Brigham and Women’s Hospital, Boston, Massachusetts.

These drugs — initially developed for diabetes — have already shown anti-inflammatory effects, and one study suggested that GLP-1s lowered the risk for major adverse cardiovascular events and all-cause mortality in individuals with immune-mediated inflammatory diseases. Obesity is a known risk factor for RA, so weight loss aided by GLP-1 drugs could also help reduce risk in certain patients. Clinical trials are needed to explore GLP-1s for both RA prevention and treatment, he said.

While prevention trials up to this point have used one-time, time-limited interventions, longer durations of medication or multiple rounds of therapy may be more efficacious. Even for trials that demonstrated the intervention arms had less progression to RA, this effect diminished once participants stopped the medication. In the ARIAA and APIPPRA trials using abatacept, “it wasn’t like we hit a reset button and [patients] just permanently now did not get rheumatoid arthritis,” Deane said, suggesting that alternative approaches should be explored.

“Future studies need to look at potentially longer doses of drug or lower doses of drug, or some combination that might be effective,” he said.

Deane received honoraria from Bristol-Myers Squibb, Thermo Fisher, and Werfen and grant funding from Janssen Research and Development and Gilead Sciences. Mankia received grant support from Gilead, Lilly, AstraZeneca, and Serac Life Sciences and honoraria or consultant fees from AbbVie, UCB, Lilly, Galapagos, DeepCure, Serac Life Sciences, AstraZeneca, and Zura Bio. Sparks received research support from Boehringer Ingelheim, Bristol-Myers Squibb, Janssen, and Sonoma Biotherapeutics. He consulted for AbbVie, Amgen, Boehringer Ingelheim, Bristol Myers Squibb, Gilead, Inova Diagnostics, Janssen, Merck, Mustang, Optum, Pfizer, ReCor Medical, Sana, Sobi, and UCB.

A version of this article first appeared on Medscape.com.

TOPLINE:

Patients with cutaneous lupus erythematosus (CLE) experienced improved symptoms with iberdomide, a cereblon modulator, added to standard lupus medications, particularly in subacute and chronic cases.

METHODOLOGY:

• Researchers conducted a randomized phase 2 trial to evaluate the efficacy and safety of iberdomide in 288 patients with CLE (mean age, 45 years; 97% women). Iberdomide is a cereblon modulator, which results in degradation of two transcription factors of immune cell development and homeostasis — Ikaros and Aiolos — that have been implicated in the genetic predisposition of systemic lupus.
• CLE Disease Area and Severity Index Activity (CLASI-A) endpoints included mean percent change from baseline and ≥ 50% reduction from baseline (CLASI-50), which were evaluated in all patients with baseline CLASI-A scores ≥ 8 and by CLE subtypes (acute, subacute, and chronic).
• At baseline, 56% of patients had acute CLE, 29% had chronic CLE, and 16% had subacute CLE; 28% of patients had a baseline CLASI-A score ≥ 8.
• Patients were randomly assigned to receive oral iberdomide (0.45 mg, 0.30 mg, 0.15 mg, or placebo daily) for 24 weeks while continuing standard lupus medications. At week 24, patients on placebo were rerandomized to iberdomide 0.45 mg or 0.30 mg once a day, while those on iberdomide continued their assigned dose through week 52.

TAKEAWAY:

• Among patients with baseline CLASI-A ≥ 8, the mean change in CLASI-A score from baseline at week 24 was −66.7% for those on iberdomide 0.45 mg vs −54.2% for placebo (P = .295).
• At week 24, patients with subacute CLE showed a significantly greater mean percent change from baseline in CLASI-A with iberdomide 0.45 mg vs placebo (−90.5% vs −51.2%; P = .007), while no significant differences were observed with the 0.45-mg dose vs placebo in patients with chronic or acute CLE.
• Overall, CLASI-50 responses were not significantly different among those on 0.45 mg vs placebo (55.6% vs 44.6%). The proportions of patients achieving CLASI-50 at week 24 were significantly greater for iberdomide 0.45 mg vs placebo for those with subacute CLE (91.7% vs 52.9%; P = .035) and chronic CLE (62.1% vs 27.8%; P = .029), but not for those with baseline CLASI-A ≥ 8 (66.7% vs 50%).
• More than 80% of patients had treatment-emergent adverse events (TEAEs), which were mostly mild to moderate. Over 2 years, the most common were urinary tract infections, upper respiratory tract infections, neutropenia, and nasopharyngitis. TEAEs leading to iberdomide discontinuation in one or more patients were neutropenia (n = 7), rash (n = 7), increased hepatic enzymes (n = 4), and deep vein thrombosis (n = 3).

IN PRACTICE:

“Data from this phase 2 trial of iberdomide in patients with SLE suggest that a greater proportion of patients with subacute or chronic CLE who received the higher dose of 0.45 mg iberdomide achieved CLASI-50 vs placebo. For the overall population, CLASI-50 response was not significantly different between treatment groups at week 24, partly due to a high placebo response that may have been driven by patients with acute CLE,” the authors wrote.

SOURCE:

The study was led by Victoria P. Werth, MD, of the University of Pennsylvania and the Veteran’s Administration Medical Center, both in Philadelphia, and was published online in the Journal of the American Academy of Dermatology.

LIMITATIONS:

The study included small patient subgroups for different CLE subtypes, which may affect the generalizability of the findings. CLE subtype was determined by the investigator without additional photographic adjudication. Additionally, the use of background lupus medications could have influenced the placebo group’s response, limiting the ability to observe the treatment effect of iberdomide monotherapy.

DISCLOSURES:

The study was funded by Bristol-Myers Squibb. Six authors reported being employed by Bristol-Myers Squibb, and several others reported consultancy and research support from various sources including Bristol-Myers Squibb.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE:

Patients with cutaneous lupus erythematosus (CLE) experienced improved symptoms with iberdomide, a cereblon modulator, added to standard lupus medications, particularly in subacute and chronic cases.

METHODOLOGY:

• Researchers conducted a randomized phase 2 trial to evaluate the efficacy and safety of iberdomide in 288 patients with CLE (mean age, 45 years; 97% women). Iberdomide is a cereblon modulator, which results in degradation of two transcription factors of immune cell development and homeostasis — Ikaros and Aiolos — that have been implicated in the genetic predisposition of systemic lupus.
• CLE Disease Area and Severity Index Activity (CLASI-A) endpoints included mean percent change from baseline and ≥ 50% reduction from baseline (CLASI-50), which were evaluated in all patients with baseline CLASI-A scores ≥ 8 and by CLE subtypes (acute, subacute, and chronic).
• At baseline, 56% of patients had acute CLE, 29% had chronic CLE, and 16% had subacute CLE; 28% of patients had a baseline CLASI-A score ≥ 8.
• Patients were randomly assigned to receive oral iberdomide (0.45 mg, 0.30 mg, 0.15 mg, or placebo daily) for 24 weeks while continuing standard lupus medications. At week 24, patients on placebo were rerandomized to iberdomide 0.45 mg or 0.30 mg once a day, while those on iberdomide continued their assigned dose through week 52.

TAKEAWAY:

• Among patients with baseline CLASI-A ≥ 8, the mean change in CLASI-A score from baseline at week 24 was −66.7% for those on iberdomide 0.45 mg vs −54.2% for placebo (P = .295).
• At week 24, patients with subacute CLE showed a significantly greater mean percent change from baseline in CLASI-A with iberdomide 0.45 mg vs placebo (−90.5% vs −51.2%; P = .007), while no significant differences were observed with the 0.45-mg dose vs placebo in patients with chronic or acute CLE.
• Overall, CLASI-50 responses were not significantly different among those on 0.45 mg vs placebo (55.6% vs 44.6%). The proportions of patients achieving CLASI-50 at week 24 were significantly greater for iberdomide 0.45 mg vs placebo for those with subacute CLE (91.7% vs 52.9%; P = .035) and chronic CLE (62.1% vs 27.8%; P = .029), but not for those with baseline CLASI-A ≥ 8 (66.7% vs 50%).
• More than 80% of patients had treatment-emergent adverse events (TEAEs), which were mostly mild to moderate. Over 2 years, the most common were urinary tract infections, upper respiratory tract infections, neutropenia, and nasopharyngitis. TEAEs leading to iberdomide discontinuation in one or more patients were neutropenia (n = 7), rash (n = 7), increased hepatic enzymes (n = 4), and deep vein thrombosis (n = 3).

IN PRACTICE:

“Data from this phase 2 trial of iberdomide in patients with SLE suggest that a greater proportion of patients with subacute or chronic CLE who received the higher dose of 0.45 mg iberdomide achieved CLASI-50 vs placebo. For the overall population, CLASI-50 response was not significantly different between treatment groups at week 24, partly due to a high placebo response that may have been driven by patients with acute CLE,” the authors wrote.

SOURCE:

The study was led by Victoria P. Werth, MD, of the University of Pennsylvania and the Veteran’s Administration Medical Center, both in Philadelphia, and was published online in the Journal of the American Academy of Dermatology.

LIMITATIONS:

The study included small patient subgroups for different CLE subtypes, which may affect the generalizability of the findings. CLE subtype was determined by the investigator without additional photographic adjudication. Additionally, the use of background lupus medications could have influenced the placebo group’s response, limiting the ability to observe the treatment effect of iberdomide monotherapy.

DISCLOSURES:

The study was funded by Bristol-Myers Squibb. Six authors reported being employed by Bristol-Myers Squibb, and several others reported consultancy and research support from various sources including Bristol-Myers Squibb.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE:

Patients with cutaneous lupus erythematosus (CLE) experienced improved symptoms with iberdomide, a cereblon modulator, added to standard lupus medications, particularly in subacute and chronic cases.

METHODOLOGY:

• Researchers conducted a randomized phase 2 trial to evaluate the efficacy and safety of iberdomide in 288 patients with CLE (mean age, 45 years; 97% women). Iberdomide is a cereblon modulator, which results in degradation of two transcription factors of immune cell development and homeostasis — Ikaros and Aiolos — that have been implicated in the genetic predisposition of systemic lupus.
• CLE Disease Area and Severity Index Activity (CLASI-A) endpoints included mean percent change from baseline and ≥ 50% reduction from baseline (CLASI-50), which were evaluated in all patients with baseline CLASI-A scores ≥ 8 and by CLE subtypes (acute, subacute, and chronic).
• At baseline, 56% of patients had acute CLE, 29% had chronic CLE, and 16% had subacute CLE; 28% of patients had a baseline CLASI-A score ≥ 8.
• Patients were randomly assigned to receive oral iberdomide (0.45 mg, 0.30 mg, 0.15 mg, or placebo daily) for 24 weeks while continuing standard lupus medications. At week 24, patients on placebo were rerandomized to iberdomide 0.45 mg or 0.30 mg once a day, while those on iberdomide continued their assigned dose through week 52.

TAKEAWAY:

• Among patients with baseline CLASI-A ≥ 8, the mean change in CLASI-A score from baseline at week 24 was −66.7% for those on iberdomide 0.45 mg vs −54.2% for placebo (P = .295).
• At week 24, patients with subacute CLE showed a significantly greater mean percent change from baseline in CLASI-A with iberdomide 0.45 mg vs placebo (−90.5% vs −51.2%; P = .007), while no significant differences were observed with the 0.45-mg dose vs placebo in patients with chronic or acute CLE.
• Overall, CLASI-50 responses were not significantly different among those on 0.45 mg vs placebo (55.6% vs 44.6%). The proportions of patients achieving CLASI-50 at week 24 were significantly greater for iberdomide 0.45 mg vs placebo for those with subacute CLE (91.7% vs 52.9%; P = .035) and chronic CLE (62.1% vs 27.8%; P = .029), but not for those with baseline CLASI-A ≥ 8 (66.7% vs 50%).
• More than 80% of patients had treatment-emergent adverse events (TEAEs), which were mostly mild to moderate. Over 2 years, the most common were urinary tract infections, upper respiratory tract infections, neutropenia, and nasopharyngitis. TEAEs leading to iberdomide discontinuation in one or more patients were neutropenia (n = 7), rash (n = 7), increased hepatic enzymes (n = 4), and deep vein thrombosis (n = 3).

IN PRACTICE:

“Data from this phase 2 trial of iberdomide in patients with SLE suggest that a greater proportion of patients with subacute or chronic CLE who received the higher dose of 0.45 mg iberdomide achieved CLASI-50 vs placebo. For the overall population, CLASI-50 response was not significantly different between treatment groups at week 24, partly due to a high placebo response that may have been driven by patients with acute CLE,” the authors wrote.

SOURCE:

The study was led by Victoria P. Werth, MD, of the University of Pennsylvania and the Veteran’s Administration Medical Center, both in Philadelphia, and was published online in the Journal of the American Academy of Dermatology.

LIMITATIONS:

The study included small patient subgroups for different CLE subtypes, which may affect the generalizability of the findings. CLE subtype was determined by the investigator without additional photographic adjudication. Additionally, the use of background lupus medications could have influenced the placebo group’s response, limiting the ability to observe the treatment effect of iberdomide monotherapy.

DISCLOSURES:

The study was funded by Bristol-Myers Squibb. Six authors reported being employed by Bristol-Myers Squibb, and several others reported consultancy and research support from various sources including Bristol-Myers Squibb.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

Many people with rheumatologic diseases try supplements for symptom relief. Here’s what you need to know about some common picks.

Dietary supplements were a $159 billion business in the United States in 2023, and many people with rheumatologic diseases are buying in. Research suggests more than 6 in 10 people with fibromyalgia, nearly 8 in 10 people with Sjögren’s disease, and more than 8 in 10 people with rheumatoid arthritis (RA) take dietary supplements.

Whatever the symptom — pain, swelling, or fatigue — you can probably find a supplement purporting to relieve it. But do these supplements work, and are they safe? A study review in RMD Open comprising 24 systematic reviews and 150 original articles suggests more high-quality research is needed on the effects of dietary supplements on rheumatologic diseases. Most studies have focused on RA or osteoarthritis (OA), where the evidence level is moderate at best.

Dr. Janet Funk

“The studies in this space are usually not very high quality because there’s no money to support them, among other things, plus the products are disparate,” said Janet Funk, MD, MS, professor in the School of Nutritional Sciences and Wellness at the University of Arizona, Tucson. She recommended brushing up on supplements and finding out what patients are taking so you can offer advice and watch for drug-supplement interactions.

When asked for a medication list, many patients forget to report supplements, Funk said. “You have to prompt them specifically. I think some physicians have very negative views about supplements because so little data is known, and patients might pick up on that and decide not to report their use.” She recommended saying something like: “To give you the best possible care, I want to know everything you’re taking, including supplements. The things I’m prescribing could maybe interact with the things you’re taking, so I want to make sure I know about all of it so that together we can figure out if the combination of things is safe.”

The quality of dietary supplements varies, and they aren’t regulated like drugs by the Food and Drug Administration. Funk recommended selecting products verified by NSF or ConsumerLab. They test supplements to ensure the label reflects what’s inside.

This news organization scoured the literature and asked experts to weigh in on the evidence behind popular supplements in rheumatology today.
 

The Essential Nutrients

Vitamin supplements are a staple in many homes — but are they helpful? “Individual vitamin supplements will not provide any benefit unless the person is deficient in a specific vitamin or mineral,” according to Elena Philippou, PhD, RD, associate professor of nutrition-dietetics at the University of Nicosia in Cyprus, and Elena Nikiphorou, MBBS, a rheumatologist at King’s College London in England. For some patients, deficiency is a reality. A retrospective cohort study in The Journal of Clinical Medicine found that people with RA were 17% more likely than age-matched control individuals to have nutrient deficiencies, perhaps because symptoms like fatigue, pain, and nausea affect their eating habits. Here’s what the science says about common vitamin supplements.

Dr. Elena Philippou

Vitamin D. This hormone-like vitamin, which attaches to receptors on immune cells to tamp down inflammation, was the most popular dietary supplement among rheumatology patients in a recent study from the United Kingdom. Vitamin D deficiency is common in people with RA, lupus, Sjögren’s disease, ankylosing spondylitis, systemic sclerosis, and fibromyalgia. In some cases, vitamin D levels track with disease activity, research suggests. Corticosteroids can also make vitamin D deficiency more likely. Can supplements help?

In RA, evidence points to small improvements. A systematic review of 11 studies including 3049 patients published in Nutrition Reviews showed that vitamin D supplements significantly reduced patients’ pain and Disease Activity Score in 28 joints (DAS28) using both C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR).

The research is mixed on the benefits of vitamin D supplementation for fibromyalgia symptoms, according to a study review in SN Comprehensive Clinical Medicine that included two studies and 80 patients on supplementation. However, researchers said it’s still worth discussing the potential benefits of taking vitamin D.

“Vitamin D supplementation is important in the context of various rheumatic diseases to prevent or treat bone disease,” said Philippou and Nikiphorou. “People with rheumatic disease should speak to their healthcare provider and ask to check their blood vitamin D concentration.” The results can help you recommend a dose.

Folate. Patients on methotrexate should take folic acid supplements under the guidance of a healthcare provider, said Philippou and Nikiphorou. The reason: Methotrexate can deplete folic acid levels, increasing the risk for side effects. An analysis of adverse event reports published showed that methotrexate users who took folic acid (or tumor necrosis factor–alpha inhibitors) had a reduced risk for hepatotoxicity or myelosuppression. A commonly recommended dose is 1 mg/d.

Vitamin B12. In a 2024 perspective paper in Rheumatology International, researchers said physicians should assess vitamin B12 levels early in the diagnostic process of rheumatologic diseases. One reason: Many symptoms of pernicious anemia, like fatigue, mimic symptoms of rheumatologic diseases. The gastrointestinal (GI) effects of systemic sclerosis could bring on vitamin B12 deficiency. In a small study in The Journal of Clinical Rheumatology, 44 of 62 patients with systemic sclerosis had low vitamin B12 levels.

Vitamin E. Vitamin E deficiency is rare in healthy adults. However, some medical conditions, like inflammatory bowel disease and malabsorption disorders, can make vitamin E deficiency more likely. In RA, a vitamin E supplement could help reduce joint swelling and sensitivity, according to a systematic review of nine studies including 39,845 patients in The European Journal of Clinical Nutrition. Researchers credit the nutrient’s role in aiding intestinal repair. Use with caution, as this supplement can increase bleeding risk in doses over 1000 mg/d.

Vitamin A. Like vitamin E, vitamin A deficiency is rare in the United States. The risk of oversupplementing is higher than undersupplementing. However, vitamin A deficiency can happen in people with chronic pancreatic, liver, or GI problems. In people with deficiency, a vitamin A supplement can help relieve dry eye symptoms common in Sjögren’s disease, suggests a narrative review published in Nutrients. Vitamin A might help reduce ocular surface changes by supporting the production of proteins that protect the outermost surfaces of the eyes. The recommended daily allowance for vitamin A is 900 μg. High-dose supplements can cause toxicity, resulting in GI symptoms and problems like lethargy, drowsiness, increased intracranial pressure, and skin changes.
 

The Replacements

These substances are similar to naturally occurring compounds in our bodies. The question is whether ingesting them yields benefits.

Glucosamine and chondroitin. Glucosamine and chondroitin occur naturally in our bodies and help us form and protect connective tissues. In pill form, this combo is the most popular dietary supplement for OA, according to research in the journal Maturitas. But studies of its effectiveness yield mixed results. A systematic review of 25 studies published in Inflammopharmacology showed that, in patients with knee OA, supplementation with about 1500 mg of glucosamine per day reduced tibiofemoral joint space narrowing, while supplementation with about 800 mg/d of chondroitin reduced pain intensity and improved physical function, compared with placebo. The duo of glucosamine and chondroitin did not bring significant benefits, perhaps because more studies are needed. Most side effects were mild, but some literature points to the potential for glucosamine to increase warfarin’s blood-thinning effects.

Omega-3 fatty acids. Fish oil is a top-selling supplement, and it might be helpful in inflammatory rheumatologic diseases. A systematic review of 30 studies including 710 patients published in Arthritis Research & Therapy showed that omega-3 fatty acid supplements can improve pain, swollen and tender joint count, DAS28 scores, and Health Assessment Questionnaire scores in patients with RA, psoriatic arthritis, or ankylosing spondylitis. In patients with lupus, a study review that included five studies and 284 patients in The International Journal of Environmental Research and Public Health suggested omega-3 fatty acid supplements could improve ESR, CRP, disease activity, inflammatory markers, oxidative stress, lipid levels, and endothelial function.

Omega-3 fatty acids have anti-inflammatory effects that might explain their benefits. In patients with RA, for example, fish oil supplementation was associated with elevated blood levels of resolvins and protectins, which help quell inflammation, according to a study in Prostaglandins, Leukotrienes and Essential Fatty Acids.

Philippou and Nikiphorou recommended combining food and supplements: Eat oily fish at least twice a week, regularly consume plant-based sources of omega-3s — like chia seeds, flaxseeds, or walnuts — and consider a daily supplement that contains 2 g of omega-3s from docosahexaenoic acid and eicosapentaenoic acid. Most fish oil side effects are mild, like heartburn and bad breath. Fish oil can have blood-thinning effects at high doses, so special attention is needed for patients on anticoagulants.

Probiotics. Building up the good bacteria in your gut might help you fight the effects of rheumatologic diseases. A systematic review of 80 randomized controlled trials in BMC Medicine suggested that therapies targeting the gut microbiota might improve the symptoms or inflammatory factors in celiac disease, lupus, juvenile idiopathic arthritis, psoriasis, Sjögren’s disease, multiple sclerosis, systemic sclerosis, Crohn’s disease, and ulcerative colitis. Probiotics were also shown to relieve pain in fibromyalgia, but they didn’t affect scores on the Fibromyalgia Impact Questionnaire. Probiotics were not helpful in spondyloarthritis or RA. There were no adverse events. By improving the balance of bacteria in the gut, probiotics might inhibit pro-inflammatory factors and signaling pathways and regulate CD4+ T-cell differentiation, the researchers wrote.

Not all probiotic supplements are created equal. Effects can vary by microorganism and dose. Until more high-quality studies are published, Philippou and Nikiphorou recommend daily consumption of probiotic food sources such as yogurt, kefir, sauerkraut, kimchi, tempeh, miso, and kombucha, along with prebiotic food sources such as bananas, onion, artichokes, asparagus, oats, leeks, and garlic.

Collagen. An increasingly popular supplement for hair, skin, and nails, some collagen peptide or hydrolyzed collagen supplements come with claims about joint health, too. Inside our bodies, collagen helps build joints. As a supplement, the jury is still out. A systematic review of 19 studies in The International Journal of Rheumatic Diseases suggested more research is needed to determine whether collagen supplements are harmful or helpful in OA or RA. Studies haven’t shown adverse events, and doses typically range from 2.5 to 15 g/d.

Coenzyme Q10 (CoQ10). This antioxidant occurs naturally in our cells and is produced through microbial fermentation for use in dietary supplements. A study review of 20 articles including 483 patients in Clinical Nutrition ESPEN concluded that CoQ10 supplementation up to 300 mg/d was beneficial in RA, fibromyalgia, or antiphospholipid syndrome (APS).

In RA, CoQ10 supplementation improved disease activity index, ESR, and cytokine levels and decreased malondialdehyde. CoQ10 might protect against the overproduction of reactive oxygen species that can promote inflammation and joint damage, the researchers said. In fibromyalgia, CoQ10 was linked with improvements in pain, fatigue, sleep, tender points count, mood disorders, and scores on the Fibromyalgia Impact Questionnaire in most of the included studies. CoQ10 might help in fibromyalgia by improving mitochondrial dysfunction. In APS, CoQ10 improved endothelial function and decreased prothrombotic and pro-inflammatory mediators. CoQ10 might change the expression of genes that promote atherosclerosis. A few patients had GI side effects like nausea and diarrhea, but the supplements were generally well tolerated.

Melatonin. Commonly touted as a sleep aid, this hormone has immune and anti-inflammatory activities that could benefit people with rheumatologic diseases. A study review of 13 articles including 533 patients in Clinical Nutrition ESPEN concluded that melatonin can help improve sleep, pain, and mood in fibromyalgia, OA, and osteoporosis but not in RA. Side effects were minimal, but a few people experienced nausea, drowsiness, nightmares, or headaches. Doses of 5-6 mg/d are likely safe for most adults.
 

The Plant-Derived Antioxidants

Many supplements used in rheumatology are antioxidants derived from herbs, spices, or other plants. When plants encounter stressors, like temperature changes or hungry insects, their secondary metabolism revs up and creates compounds with biological properties. Some of these substances influence inflammatory pathways in the human body, said Luís Silva, PhD, a medicinal chemistry researcher at the Polytechnic Institute of Guarda in Portugal. “If it is possible to reduce these kinds of anti-inflammatory processes, it is also possible that we could help people with inflammatory diseases to a good life, or a better life.”

Dr. Luís Silva

Turmeric and curcumin. You might see this supplement labeled as turmeric, a golden spice in curry powder, or curcumin, an antioxidant compound known as a curcuminoid in turmeric. Curcuminoids might reduce inflammation by scavenging free radicals and inhibiting enzymes that make prostaglandins, Silva said.

Turmeric is the most popular herbal supplement for people with RA, according to Funk’s research. A study review of six publications including 539 patients in Frontiers in Immunology showed that curcumin supplements improved RA patients’ ESR, DAS, swollen joint count, and tender joint count. Turmeric could help patients with OA, too. Patients with OA who took 1000 mg/d of curcumin improved their pain and function, according to a systematic review including 12 studies and 1438 participants in the journal Nutrients. In lupus, small studies are promising but inconclusive, suggested a study review in Frontiers in Immunology.

Watch patients taking turmeric and methotrexate closely, Funk said. Both have been associated with liver problems. Some users also experience GI symptoms like diarrhea because turmeric doesn’t absorb well in the GI tract.

Milk thistle (silymarin). This flowering plant is often marketed as a liver-supporting supplement, but research also suggests promise in RA and OA. A systematic review of 12 studies in Current Rheumatology Reviews suggested that silymarin supplements might help relieve pain, reduce inflammation, and protect the cartilage matrix, synovial membrane, and cartilage cells in joints. This supplement might help via immunomodulatory, anti-inflammatory, antioxidant, and anti-apoptotic properties, the researchers said. Doses of 250-750 mg appear to be safe. Side effects such as gastroenteritis, diarrhea, bloating, and headache can occur.

Boswellia serrata. Sourced from the resin of a tree that grows in dry, mountainous regions of Asia and Africa, Boswellia serrata can help relieve joint pain and stiffness and improve joint function in OA, suggested a systematic review of seven trials involving 545 patients in BMC Complementary Medicine and Therapies. Users saw benefits when taking 100-250 mg/d for 4 weeks or more. Compounds in Boswellia serrata may inhibit 5-lipoxygenase, an enzyme involved in producing inflammatory leukotrienes. No adverse events were reported. In some studies, users have reported GI side effects.

Ginger. Ginger is a popular herbal supplement among people with RA, Funk’s research suggested. One small clinical trial involving 70 patients with RA in the journal Gene showed that taking 1500 mg/d of ginger for 12 weeks improved their DAS and boosted their expression of FoxP3 genes, which are linked with the function of regulatory T cells. A meta-analysis including three studies with 330 patients taking ginger published in the journal Nutrients suggested ginger can reduce pain and systemic inflammation in people with OA. Preclinical studies suggested phenolic compounds in this spicy root, such as gingerols, reduce inflammation through multiple mechanisms.

Funk’s research revealed wide variation in the quality of ginger supplements, reinforcing the importance of selecting an independently verified product. Research suggested a safe dose is up to 2-2.5 g/kg body weight.

Resveratrol. Found in red grapes and red wine, this compound is particularly good at blocking COX-2 enzymes, an important step in the inflammatory cascade, Silva said. “Because of their chemical structure, they have great affinity to these enzymes to lead to their inhibition,” he said. A study review of five articles including 481 patients in The European Journal of Rheumatology showed that people with OA, RA, or Takayasu arteritis who took 250-1000 mg/d of resveratrol saw improvements in pain, function, disease activity, joint swelling, and inflammation, with no side effects.

Cinnamon. This warming spice is gaining popularity as a supplement, reported the American Botanical Council. Cinnamon is often marketed as lowering blood sugar and supporting bone health. In a small study of 36 women with RA published in The Journal of the American College of Nutrition, participants who consumed 2 g/d of cinnamon powder had reduced DASs along with reduced pain and tender and swollen joint counts. Cinnamon may reduce pain by inhibiting prostaglandin and blunt inflammation by reducing the release of arachidonic acid from cell membranes, according to a study review in Frontiers in Pharmacology. GI problems and allergic reactions are among the most common side effects.

Funk, Nikiphorou, Philippou, and Silva all had no relevant disclosures.

A version of this article first appeared on Medscape.com.

Many people with rheumatologic diseases try supplements for symptom relief. Here’s what you need to know about some common picks.

Dietary supplements were a $159 billion business in the United States in 2023, and many people with rheumatologic diseases are buying in. Research suggests more than 6 in 10 people with fibromyalgia, nearly 8 in 10 people with Sjögren’s disease, and more than 8 in 10 people with rheumatoid arthritis (RA) take dietary supplements.

Whatever the symptom — pain, swelling, or fatigue — you can probably find a supplement purporting to relieve it. But do these supplements work, and are they safe? A study review in RMD Open comprising 24 systematic reviews and 150 original articles suggests more high-quality research is needed on the effects of dietary supplements on rheumatologic diseases. Most studies have focused on RA or osteoarthritis (OA), where the evidence level is moderate at best.

Dr. Janet Funk

“The studies in this space are usually not very high quality because there’s no money to support them, among other things, plus the products are disparate,” said Janet Funk, MD, MS, professor in the School of Nutritional Sciences and Wellness at the University of Arizona, Tucson. She recommended brushing up on supplements and finding out what patients are taking so you can offer advice and watch for drug-supplement interactions.

When asked for a medication list, many patients forget to report supplements, Funk said. “You have to prompt them specifically. I think some physicians have very negative views about supplements because so little data is known, and patients might pick up on that and decide not to report their use.” She recommended saying something like: “To give you the best possible care, I want to know everything you’re taking, including supplements. The things I’m prescribing could maybe interact with the things you’re taking, so I want to make sure I know about all of it so that together we can figure out if the combination of things is safe.”

The quality of dietary supplements varies, and they aren’t regulated like drugs by the Food and Drug Administration. Funk recommended selecting products verified by NSF or ConsumerLab. They test supplements to ensure the label reflects what’s inside.

This news organization scoured the literature and asked experts to weigh in on the evidence behind popular supplements in rheumatology today.
 

The Essential Nutrients

Vitamin supplements are a staple in many homes — but are they helpful? “Individual vitamin supplements will not provide any benefit unless the person is deficient in a specific vitamin or mineral,” according to Elena Philippou, PhD, RD, associate professor of nutrition-dietetics at the University of Nicosia in Cyprus, and Elena Nikiphorou, MBBS, a rheumatologist at King’s College London in England. For some patients, deficiency is a reality. A retrospective cohort study in The Journal of Clinical Medicine found that people with RA were 17% more likely than age-matched control individuals to have nutrient deficiencies, perhaps because symptoms like fatigue, pain, and nausea affect their eating habits. Here’s what the science says about common vitamin supplements.

Dr. Elena Philippou

Vitamin D. This hormone-like vitamin, which attaches to receptors on immune cells to tamp down inflammation, was the most popular dietary supplement among rheumatology patients in a recent study from the United Kingdom. Vitamin D deficiency is common in people with RA, lupus, Sjögren’s disease, ankylosing spondylitis, systemic sclerosis, and fibromyalgia. In some cases, vitamin D levels track with disease activity, research suggests. Corticosteroids can also make vitamin D deficiency more likely. Can supplements help?

In RA, evidence points to small improvements. A systematic review of 11 studies including 3049 patients published in Nutrition Reviews showed that vitamin D supplements significantly reduced patients’ pain and Disease Activity Score in 28 joints (DAS28) using both C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR).

The research is mixed on the benefits of vitamin D supplementation for fibromyalgia symptoms, according to a study review in SN Comprehensive Clinical Medicine that included two studies and 80 patients on supplementation. However, researchers said it’s still worth discussing the potential benefits of taking vitamin D.

“Vitamin D supplementation is important in the context of various rheumatic diseases to prevent or treat bone disease,” said Philippou and Nikiphorou. “People with rheumatic disease should speak to their healthcare provider and ask to check their blood vitamin D concentration.” The results can help you recommend a dose.

Folate. Patients on methotrexate should take folic acid supplements under the guidance of a healthcare provider, said Philippou and Nikiphorou. The reason: Methotrexate can deplete folic acid levels, increasing the risk for side effects. An analysis of adverse event reports published showed that methotrexate users who took folic acid (or tumor necrosis factor–alpha inhibitors) had a reduced risk for hepatotoxicity or myelosuppression. A commonly recommended dose is 1 mg/d.

Vitamin B12. In a 2024 perspective paper in Rheumatology International, researchers said physicians should assess vitamin B12 levels early in the diagnostic process of rheumatologic diseases. One reason: Many symptoms of pernicious anemia, like fatigue, mimic symptoms of rheumatologic diseases. The gastrointestinal (GI) effects of systemic sclerosis could bring on vitamin B12 deficiency. In a small study in The Journal of Clinical Rheumatology, 44 of 62 patients with systemic sclerosis had low vitamin B12 levels.

Vitamin E. Vitamin E deficiency is rare in healthy adults. However, some medical conditions, like inflammatory bowel disease and malabsorption disorders, can make vitamin E deficiency more likely. In RA, a vitamin E supplement could help reduce joint swelling and sensitivity, according to a systematic review of nine studies including 39,845 patients in The European Journal of Clinical Nutrition. Researchers credit the nutrient’s role in aiding intestinal repair. Use with caution, as this supplement can increase bleeding risk in doses over 1000 mg/d.

Vitamin A. Like vitamin E, vitamin A deficiency is rare in the United States. The risk of oversupplementing is higher than undersupplementing. However, vitamin A deficiency can happen in people with chronic pancreatic, liver, or GI problems. In people with deficiency, a vitamin A supplement can help relieve dry eye symptoms common in Sjögren’s disease, suggests a narrative review published in Nutrients. Vitamin A might help reduce ocular surface changes by supporting the production of proteins that protect the outermost surfaces of the eyes. The recommended daily allowance for vitamin A is 900 μg. High-dose supplements can cause toxicity, resulting in GI symptoms and problems like lethargy, drowsiness, increased intracranial pressure, and skin changes.
 

The Replacements

These substances are similar to naturally occurring compounds in our bodies. The question is whether ingesting them yields benefits.

Glucosamine and chondroitin. Glucosamine and chondroitin occur naturally in our bodies and help us form and protect connective tissues. In pill form, this combo is the most popular dietary supplement for OA, according to research in the journal Maturitas. But studies of its effectiveness yield mixed results. A systematic review of 25 studies published in Inflammopharmacology showed that, in patients with knee OA, supplementation with about 1500 mg of glucosamine per day reduced tibiofemoral joint space narrowing, while supplementation with about 800 mg/d of chondroitin reduced pain intensity and improved physical function, compared with placebo. The duo of glucosamine and chondroitin did not bring significant benefits, perhaps because more studies are needed. Most side effects were mild, but some literature points to the potential for glucosamine to increase warfarin’s blood-thinning effects.

Omega-3 fatty acids. Fish oil is a top-selling supplement, and it might be helpful in inflammatory rheumatologic diseases. A systematic review of 30 studies including 710 patients published in Arthritis Research & Therapy showed that omega-3 fatty acid supplements can improve pain, swollen and tender joint count, DAS28 scores, and Health Assessment Questionnaire scores in patients with RA, psoriatic arthritis, or ankylosing spondylitis. In patients with lupus, a study review that included five studies and 284 patients in The International Journal of Environmental Research and Public Health suggested omega-3 fatty acid supplements could improve ESR, CRP, disease activity, inflammatory markers, oxidative stress, lipid levels, and endothelial function.

Omega-3 fatty acids have anti-inflammatory effects that might explain their benefits. In patients with RA, for example, fish oil supplementation was associated with elevated blood levels of resolvins and protectins, which help quell inflammation, according to a study in Prostaglandins, Leukotrienes and Essential Fatty Acids.

Philippou and Nikiphorou recommended combining food and supplements: Eat oily fish at least twice a week, regularly consume plant-based sources of omega-3s — like chia seeds, flaxseeds, or walnuts — and consider a daily supplement that contains 2 g of omega-3s from docosahexaenoic acid and eicosapentaenoic acid. Most fish oil side effects are mild, like heartburn and bad breath. Fish oil can have blood-thinning effects at high doses, so special attention is needed for patients on anticoagulants.

Probiotics. Building up the good bacteria in your gut might help you fight the effects of rheumatologic diseases. A systematic review of 80 randomized controlled trials in BMC Medicine suggested that therapies targeting the gut microbiota might improve the symptoms or inflammatory factors in celiac disease, lupus, juvenile idiopathic arthritis, psoriasis, Sjögren’s disease, multiple sclerosis, systemic sclerosis, Crohn’s disease, and ulcerative colitis. Probiotics were also shown to relieve pain in fibromyalgia, but they didn’t affect scores on the Fibromyalgia Impact Questionnaire. Probiotics were not helpful in spondyloarthritis or RA. There were no adverse events. By improving the balance of bacteria in the gut, probiotics might inhibit pro-inflammatory factors and signaling pathways and regulate CD4+ T-cell differentiation, the researchers wrote.

Not all probiotic supplements are created equal. Effects can vary by microorganism and dose. Until more high-quality studies are published, Philippou and Nikiphorou recommend daily consumption of probiotic food sources such as yogurt, kefir, sauerkraut, kimchi, tempeh, miso, and kombucha, along with prebiotic food sources such as bananas, onion, artichokes, asparagus, oats, leeks, and garlic.

Collagen. An increasingly popular supplement for hair, skin, and nails, some collagen peptide or hydrolyzed collagen supplements come with claims about joint health, too. Inside our bodies, collagen helps build joints. As a supplement, the jury is still out. A systematic review of 19 studies in The International Journal of Rheumatic Diseases suggested more research is needed to determine whether collagen supplements are harmful or helpful in OA or RA. Studies haven’t shown adverse events, and doses typically range from 2.5 to 15 g/d.

Coenzyme Q10 (CoQ10). This antioxidant occurs naturally in our cells and is produced through microbial fermentation for use in dietary supplements. A study review of 20 articles including 483 patients in Clinical Nutrition ESPEN concluded that CoQ10 supplementation up to 300 mg/d was beneficial in RA, fibromyalgia, or antiphospholipid syndrome (APS).

In RA, CoQ10 supplementation improved disease activity index, ESR, and cytokine levels and decreased malondialdehyde. CoQ10 might protect against the overproduction of reactive oxygen species that can promote inflammation and joint damage, the researchers said. In fibromyalgia, CoQ10 was linked with improvements in pain, fatigue, sleep, tender points count, mood disorders, and scores on the Fibromyalgia Impact Questionnaire in most of the included studies. CoQ10 might help in fibromyalgia by improving mitochondrial dysfunction. In APS, CoQ10 improved endothelial function and decreased prothrombotic and pro-inflammatory mediators. CoQ10 might change the expression of genes that promote atherosclerosis. A few patients had GI side effects like nausea and diarrhea, but the supplements were generally well tolerated.

Melatonin. Commonly touted as a sleep aid, this hormone has immune and anti-inflammatory activities that could benefit people with rheumatologic diseases. A study review of 13 articles including 533 patients in Clinical Nutrition ESPEN concluded that melatonin can help improve sleep, pain, and mood in fibromyalgia, OA, and osteoporosis but not in RA. Side effects were minimal, but a few people experienced nausea, drowsiness, nightmares, or headaches. Doses of 5-6 mg/d are likely safe for most adults.
 

The Plant-Derived Antioxidants

Many supplements used in rheumatology are antioxidants derived from herbs, spices, or other plants. When plants encounter stressors, like temperature changes or hungry insects, their secondary metabolism revs up and creates compounds with biological properties. Some of these substances influence inflammatory pathways in the human body, said Luís Silva, PhD, a medicinal chemistry researcher at the Polytechnic Institute of Guarda in Portugal. “If it is possible to reduce these kinds of anti-inflammatory processes, it is also possible that we could help people with inflammatory diseases to a good life, or a better life.”

Dr. Luís Silva

Turmeric and curcumin. You might see this supplement labeled as turmeric, a golden spice in curry powder, or curcumin, an antioxidant compound known as a curcuminoid in turmeric. Curcuminoids might reduce inflammation by scavenging free radicals and inhibiting enzymes that make prostaglandins, Silva said.

Turmeric is the most popular herbal supplement for people with RA, according to Funk’s research. A study review of six publications including 539 patients in Frontiers in Immunology showed that curcumin supplements improved RA patients’ ESR, DAS, swollen joint count, and tender joint count. Turmeric could help patients with OA, too. Patients with OA who took 1000 mg/d of curcumin improved their pain and function, according to a systematic review including 12 studies and 1438 participants in the journal Nutrients. In lupus, small studies are promising but inconclusive, suggested a study review in Frontiers in Immunology.

Watch patients taking turmeric and methotrexate closely, Funk said. Both have been associated with liver problems. Some users also experience GI symptoms like diarrhea because turmeric doesn’t absorb well in the GI tract.

Milk thistle (silymarin). This flowering plant is often marketed as a liver-supporting supplement, but research also suggests promise in RA and OA. A systematic review of 12 studies in Current Rheumatology Reviews suggested that silymarin supplements might help relieve pain, reduce inflammation, and protect the cartilage matrix, synovial membrane, and cartilage cells in joints. This supplement might help via immunomodulatory, anti-inflammatory, antioxidant, and anti-apoptotic properties, the researchers said. Doses of 250-750 mg appear to be safe. Side effects such as gastroenteritis, diarrhea, bloating, and headache can occur.

Boswellia serrata. Sourced from the resin of a tree that grows in dry, mountainous regions of Asia and Africa, Boswellia serrata can help relieve joint pain and stiffness and improve joint function in OA, suggested a systematic review of seven trials involving 545 patients in BMC Complementary Medicine and Therapies. Users saw benefits when taking 100-250 mg/d for 4 weeks or more. Compounds in Boswellia serrata may inhibit 5-lipoxygenase, an enzyme involved in producing inflammatory leukotrienes. No adverse events were reported. In some studies, users have reported GI side effects.

Ginger. Ginger is a popular herbal supplement among people with RA, Funk’s research suggested. One small clinical trial involving 70 patients with RA in the journal Gene showed that taking 1500 mg/d of ginger for 12 weeks improved their DAS and boosted their expression of FoxP3 genes, which are linked with the function of regulatory T cells. A meta-analysis including three studies with 330 patients taking ginger published in the journal Nutrients suggested ginger can reduce pain and systemic inflammation in people with OA. Preclinical studies suggested phenolic compounds in this spicy root, such as gingerols, reduce inflammation through multiple mechanisms.

Funk’s research revealed wide variation in the quality of ginger supplements, reinforcing the importance of selecting an independently verified product. Research suggested a safe dose is up to 2-2.5 g/kg body weight.

Resveratrol. Found in red grapes and red wine, this compound is particularly good at blocking COX-2 enzymes, an important step in the inflammatory cascade, Silva said. “Because of their chemical structure, they have great affinity to these enzymes to lead to their inhibition,” he said. A study review of five articles including 481 patients in The European Journal of Rheumatology showed that people with OA, RA, or Takayasu arteritis who took 250-1000 mg/d of resveratrol saw improvements in pain, function, disease activity, joint swelling, and inflammation, with no side effects.

Cinnamon. This warming spice is gaining popularity as a supplement, reported the American Botanical Council. Cinnamon is often marketed as lowering blood sugar and supporting bone health. In a small study of 36 women with RA published in The Journal of the American College of Nutrition, participants who consumed 2 g/d of cinnamon powder had reduced DASs along with reduced pain and tender and swollen joint counts. Cinnamon may reduce pain by inhibiting prostaglandin and blunt inflammation by reducing the release of arachidonic acid from cell membranes, according to a study review in Frontiers in Pharmacology. GI problems and allergic reactions are among the most common side effects.

Funk, Nikiphorou, Philippou, and Silva all had no relevant disclosures.

A version of this article first appeared on Medscape.com.

Many people with rheumatologic diseases try supplements for symptom relief. Here’s what you need to know about some common picks.

Dietary supplements were a $159 billion business in the United States in 2023, and many people with rheumatologic diseases are buying in. Research suggests more than 6 in 10 people with fibromyalgia, nearly 8 in 10 people with Sjögren’s disease, and more than 8 in 10 people with rheumatoid arthritis (RA) take dietary supplements.

Whatever the symptom — pain, swelling, or fatigue — you can probably find a supplement purporting to relieve it. But do these supplements work, and are they safe? A study review in RMD Open comprising 24 systematic reviews and 150 original articles suggests more high-quality research is needed on the effects of dietary supplements on rheumatologic diseases. Most studies have focused on RA or osteoarthritis (OA), where the evidence level is moderate at best.

Dr. Janet Funk

“The studies in this space are usually not very high quality because there’s no money to support them, among other things, plus the products are disparate,” said Janet Funk, MD, MS, professor in the School of Nutritional Sciences and Wellness at the University of Arizona, Tucson. She recommended brushing up on supplements and finding out what patients are taking so you can offer advice and watch for drug-supplement interactions.

When asked for a medication list, many patients forget to report supplements, Funk said. “You have to prompt them specifically. I think some physicians have very negative views about supplements because so little data is known, and patients might pick up on that and decide not to report their use.” She recommended saying something like: “To give you the best possible care, I want to know everything you’re taking, including supplements. The things I’m prescribing could maybe interact with the things you’re taking, so I want to make sure I know about all of it so that together we can figure out if the combination of things is safe.”

The quality of dietary supplements varies, and they aren’t regulated like drugs by the Food and Drug Administration. Funk recommended selecting products verified by NSF or ConsumerLab. They test supplements to ensure the label reflects what’s inside.

This news organization scoured the literature and asked experts to weigh in on the evidence behind popular supplements in rheumatology today.
 

The Essential Nutrients

Vitamin supplements are a staple in many homes — but are they helpful? “Individual vitamin supplements will not provide any benefit unless the person is deficient in a specific vitamin or mineral,” according to Elena Philippou, PhD, RD, associate professor of nutrition-dietetics at the University of Nicosia in Cyprus, and Elena Nikiphorou, MBBS, a rheumatologist at King’s College London in England. For some patients, deficiency is a reality. A retrospective cohort study in The Journal of Clinical Medicine found that people with RA were 17% more likely than age-matched control individuals to have nutrient deficiencies, perhaps because symptoms like fatigue, pain, and nausea affect their eating habits. Here’s what the science says about common vitamin supplements.

Dr. Elena Philippou

Vitamin D. This hormone-like vitamin, which attaches to receptors on immune cells to tamp down inflammation, was the most popular dietary supplement among rheumatology patients in a recent study from the United Kingdom. Vitamin D deficiency is common in people with RA, lupus, Sjögren’s disease, ankylosing spondylitis, systemic sclerosis, and fibromyalgia. In some cases, vitamin D levels track with disease activity, research suggests. Corticosteroids can also make vitamin D deficiency more likely. Can supplements help?

In RA, evidence points to small improvements. A systematic review of 11 studies including 3049 patients published in Nutrition Reviews showed that vitamin D supplements significantly reduced patients’ pain and Disease Activity Score in 28 joints (DAS28) using both C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR).

The research is mixed on the benefits of vitamin D supplementation for fibromyalgia symptoms, according to a study review in SN Comprehensive Clinical Medicine that included two studies and 80 patients on supplementation. However, researchers said it’s still worth discussing the potential benefits of taking vitamin D.

“Vitamin D supplementation is important in the context of various rheumatic diseases to prevent or treat bone disease,” said Philippou and Nikiphorou. “People with rheumatic disease should speak to their healthcare provider and ask to check their blood vitamin D concentration.” The results can help you recommend a dose.

Folate. Patients on methotrexate should take folic acid supplements under the guidance of a healthcare provider, said Philippou and Nikiphorou. The reason: Methotrexate can deplete folic acid levels, increasing the risk for side effects. An analysis of adverse event reports published showed that methotrexate users who took folic acid (or tumor necrosis factor–alpha inhibitors) had a reduced risk for hepatotoxicity or myelosuppression. A commonly recommended dose is 1 mg/d.

Vitamin B12. In a 2024 perspective paper in Rheumatology International, researchers said physicians should assess vitamin B12 levels early in the diagnostic process of rheumatologic diseases. One reason: Many symptoms of pernicious anemia, like fatigue, mimic symptoms of rheumatologic diseases. The gastrointestinal (GI) effects of systemic sclerosis could bring on vitamin B12 deficiency. In a small study in The Journal of Clinical Rheumatology, 44 of 62 patients with systemic sclerosis had low vitamin B12 levels.

Vitamin E. Vitamin E deficiency is rare in healthy adults. However, some medical conditions, like inflammatory bowel disease and malabsorption disorders, can make vitamin E deficiency more likely. In RA, a vitamin E supplement could help reduce joint swelling and sensitivity, according to a systematic review of nine studies including 39,845 patients in The European Journal of Clinical Nutrition. Researchers credit the nutrient’s role in aiding intestinal repair. Use with caution, as this supplement can increase bleeding risk in doses over 1000 mg/d.

Vitamin A. Like vitamin E, vitamin A deficiency is rare in the United States. The risk of oversupplementing is higher than undersupplementing. However, vitamin A deficiency can happen in people with chronic pancreatic, liver, or GI problems. In people with deficiency, a vitamin A supplement can help relieve dry eye symptoms common in Sjögren’s disease, suggests a narrative review published in Nutrients. Vitamin A might help reduce ocular surface changes by supporting the production of proteins that protect the outermost surfaces of the eyes. The recommended daily allowance for vitamin A is 900 μg. High-dose supplements can cause toxicity, resulting in GI symptoms and problems like lethargy, drowsiness, increased intracranial pressure, and skin changes.
 

The Replacements

These substances are similar to naturally occurring compounds in our bodies. The question is whether ingesting them yields benefits.

Glucosamine and chondroitin. Glucosamine and chondroitin occur naturally in our bodies and help us form and protect connective tissues. In pill form, this combo is the most popular dietary supplement for OA, according to research in the journal Maturitas. But studies of its effectiveness yield mixed results. A systematic review of 25 studies published in Inflammopharmacology showed that, in patients with knee OA, supplementation with about 1500 mg of glucosamine per day reduced tibiofemoral joint space narrowing, while supplementation with about 800 mg/d of chondroitin reduced pain intensity and improved physical function, compared with placebo. The duo of glucosamine and chondroitin did not bring significant benefits, perhaps because more studies are needed. Most side effects were mild, but some literature points to the potential for glucosamine to increase warfarin’s blood-thinning effects.

Omega-3 fatty acids. Fish oil is a top-selling supplement, and it might be helpful in inflammatory rheumatologic diseases. A systematic review of 30 studies including 710 patients published in Arthritis Research & Therapy showed that omega-3 fatty acid supplements can improve pain, swollen and tender joint count, DAS28 scores, and Health Assessment Questionnaire scores in patients with RA, psoriatic arthritis, or ankylosing spondylitis. In patients with lupus, a study review that included five studies and 284 patients in The International Journal of Environmental Research and Public Health suggested omega-3 fatty acid supplements could improve ESR, CRP, disease activity, inflammatory markers, oxidative stress, lipid levels, and endothelial function.

Omega-3 fatty acids have anti-inflammatory effects that might explain their benefits. In patients with RA, for example, fish oil supplementation was associated with elevated blood levels of resolvins and protectins, which help quell inflammation, according to a study in Prostaglandins, Leukotrienes and Essential Fatty Acids.

Philippou and Nikiphorou recommended combining food and supplements: Eat oily fish at least twice a week, regularly consume plant-based sources of omega-3s — like chia seeds, flaxseeds, or walnuts — and consider a daily supplement that contains 2 g of omega-3s from docosahexaenoic acid and eicosapentaenoic acid. Most fish oil side effects are mild, like heartburn and bad breath. Fish oil can have blood-thinning effects at high doses, so special attention is needed for patients on anticoagulants.

Probiotics. Building up the good bacteria in your gut might help you fight the effects of rheumatologic diseases. A systematic review of 80 randomized controlled trials in BMC Medicine suggested that therapies targeting the gut microbiota might improve the symptoms or inflammatory factors in celiac disease, lupus, juvenile idiopathic arthritis, psoriasis, Sjögren’s disease, multiple sclerosis, systemic sclerosis, Crohn’s disease, and ulcerative colitis. Probiotics were also shown to relieve pain in fibromyalgia, but they didn’t affect scores on the Fibromyalgia Impact Questionnaire. Probiotics were not helpful in spondyloarthritis or RA. There were no adverse events. By improving the balance of bacteria in the gut, probiotics might inhibit pro-inflammatory factors and signaling pathways and regulate CD4+ T-cell differentiation, the researchers wrote.

Not all probiotic supplements are created equal. Effects can vary by microorganism and dose. Until more high-quality studies are published, Philippou and Nikiphorou recommend daily consumption of probiotic food sources such as yogurt, kefir, sauerkraut, kimchi, tempeh, miso, and kombucha, along with prebiotic food sources such as bananas, onion, artichokes, asparagus, oats, leeks, and garlic.

Collagen. An increasingly popular supplement for hair, skin, and nails, some collagen peptide or hydrolyzed collagen supplements come with claims about joint health, too. Inside our bodies, collagen helps build joints. As a supplement, the jury is still out. A systematic review of 19 studies in The International Journal of Rheumatic Diseases suggested more research is needed to determine whether collagen supplements are harmful or helpful in OA or RA. Studies haven’t shown adverse events, and doses typically range from 2.5 to 15 g/d.

Coenzyme Q10 (CoQ10). This antioxidant occurs naturally in our cells and is produced through microbial fermentation for use in dietary supplements. A study review of 20 articles including 483 patients in Clinical Nutrition ESPEN concluded that CoQ10 supplementation up to 300 mg/d was beneficial in RA, fibromyalgia, or antiphospholipid syndrome (APS).

In RA, CoQ10 supplementation improved disease activity index, ESR, and cytokine levels and decreased malondialdehyde. CoQ10 might protect against the overproduction of reactive oxygen species that can promote inflammation and joint damage, the researchers said. In fibromyalgia, CoQ10 was linked with improvements in pain, fatigue, sleep, tender points count, mood disorders, and scores on the Fibromyalgia Impact Questionnaire in most of the included studies. CoQ10 might help in fibromyalgia by improving mitochondrial dysfunction. In APS, CoQ10 improved endothelial function and decreased prothrombotic and pro-inflammatory mediators. CoQ10 might change the expression of genes that promote atherosclerosis. A few patients had GI side effects like nausea and diarrhea, but the supplements were generally well tolerated.

Melatonin. Commonly touted as a sleep aid, this hormone has immune and anti-inflammatory activities that could benefit people with rheumatologic diseases. A study review of 13 articles including 533 patients in Clinical Nutrition ESPEN concluded that melatonin can help improve sleep, pain, and mood in fibromyalgia, OA, and osteoporosis but not in RA. Side effects were minimal, but a few people experienced nausea, drowsiness, nightmares, or headaches. Doses of 5-6 mg/d are likely safe for most adults.
 

The Plant-Derived Antioxidants

Many supplements used in rheumatology are antioxidants derived from herbs, spices, or other plants. When plants encounter stressors, like temperature changes or hungry insects, their secondary metabolism revs up and creates compounds with biological properties. Some of these substances influence inflammatory pathways in the human body, said Luís Silva, PhD, a medicinal chemistry researcher at the Polytechnic Institute of Guarda in Portugal. “If it is possible to reduce these kinds of anti-inflammatory processes, it is also possible that we could help people with inflammatory diseases to a good life, or a better life.”

Dr. Luís Silva

Turmeric and curcumin. You might see this supplement labeled as turmeric, a golden spice in curry powder, or curcumin, an antioxidant compound known as a curcuminoid in turmeric. Curcuminoids might reduce inflammation by scavenging free radicals and inhibiting enzymes that make prostaglandins, Silva said.

Turmeric is the most popular herbal supplement for people with RA, according to Funk’s research. A study review of six publications including 539 patients in Frontiers in Immunology showed that curcumin supplements improved RA patients’ ESR, DAS, swollen joint count, and tender joint count. Turmeric could help patients with OA, too. Patients with OA who took 1000 mg/d of curcumin improved their pain and function, according to a systematic review including 12 studies and 1438 participants in the journal Nutrients. In lupus, small studies are promising but inconclusive, suggested a study review in Frontiers in Immunology.

Watch patients taking turmeric and methotrexate closely, Funk said. Both have been associated with liver problems. Some users also experience GI symptoms like diarrhea because turmeric doesn’t absorb well in the GI tract.

Milk thistle (silymarin). This flowering plant is often marketed as a liver-supporting supplement, but research also suggests promise in RA and OA. A systematic review of 12 studies in Current Rheumatology Reviews suggested that silymarin supplements might help relieve pain, reduce inflammation, and protect the cartilage matrix, synovial membrane, and cartilage cells in joints. This supplement might help via immunomodulatory, anti-inflammatory, antioxidant, and anti-apoptotic properties, the researchers said. Doses of 250-750 mg appear to be safe. Side effects such as gastroenteritis, diarrhea, bloating, and headache can occur.

Boswellia serrata. Sourced from the resin of a tree that grows in dry, mountainous regions of Asia and Africa, Boswellia serrata can help relieve joint pain and stiffness and improve joint function in OA, suggested a systematic review of seven trials involving 545 patients in BMC Complementary Medicine and Therapies. Users saw benefits when taking 100-250 mg/d for 4 weeks or more. Compounds in Boswellia serrata may inhibit 5-lipoxygenase, an enzyme involved in producing inflammatory leukotrienes. No adverse events were reported. In some studies, users have reported GI side effects.

Ginger. Ginger is a popular herbal supplement among people with RA, Funk’s research suggested. One small clinical trial involving 70 patients with RA in the journal Gene showed that taking 1500 mg/d of ginger for 12 weeks improved their DAS and boosted their expression of FoxP3 genes, which are linked with the function of regulatory T cells. A meta-analysis including three studies with 330 patients taking ginger published in the journal Nutrients suggested ginger can reduce pain and systemic inflammation in people with OA. Preclinical studies suggested phenolic compounds in this spicy root, such as gingerols, reduce inflammation through multiple mechanisms.

Funk’s research revealed wide variation in the quality of ginger supplements, reinforcing the importance of selecting an independently verified product. Research suggested a safe dose is up to 2-2.5 g/kg body weight.

Resveratrol. Found in red grapes and red wine, this compound is particularly good at blocking COX-2 enzymes, an important step in the inflammatory cascade, Silva said. “Because of their chemical structure, they have great affinity to these enzymes to lead to their inhibition,” he said. A study review of five articles including 481 patients in The European Journal of Rheumatology showed that people with OA, RA, or Takayasu arteritis who took 250-1000 mg/d of resveratrol saw improvements in pain, function, disease activity, joint swelling, and inflammation, with no side effects.

Cinnamon. This warming spice is gaining popularity as a supplement, reported the American Botanical Council. Cinnamon is often marketed as lowering blood sugar and supporting bone health. In a small study of 36 women with RA published in The Journal of the American College of Nutrition, participants who consumed 2 g/d of cinnamon powder had reduced DASs along with reduced pain and tender and swollen joint counts. Cinnamon may reduce pain by inhibiting prostaglandin and blunt inflammation by reducing the release of arachidonic acid from cell membranes, according to a study review in Frontiers in Pharmacology. GI problems and allergic reactions are among the most common side effects.

Funk, Nikiphorou, Philippou, and Silva all had no relevant disclosures.

A version of this article first appeared on Medscape.com.

Nearly two thirds of patients with rheumatic conditions switched to medical cannabis from medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) and opioids, with the substitution being associated with greater self-reported improvement in symptoms than nonsubstitution.

METHODOLOGY:

• Researchers conducted a secondary analysis of a cross-sectional survey to investigate the prevalence of switching to medical cannabis from traditional medications in patients with rheumatic conditions from the United States and Canada.
• The survey included questions on current and past medical cannabis use, sociodemographic characteristics, medication taken and substituted, substance use, and patient-reported outcomes.
• Of the 1727 patients who completed the survey, 763 patients (mean age, 59 years; 84.1% women) reported current use of cannabis and were included in this analysis.
• Participants were asked if they had substituted any medications with medical cannabis and were sub-grouped accordingly.
• They also reported any changes in symptoms after initiating cannabis, the current and anticipated duration of medical cannabis use, methods of ingestion, cannabinoid content, and frequency of use.

TAKEAWAY:

• Overall, 62.5% reported substituting medical cannabis for certain medications, including NSAIDs (54.7%), opioids (48.6%), sleep aids (29.6%), muscle relaxants (25.2%), benzodiazepines (15.5%), and gabapentinoids (10.5%).
• The most common reasons given for substituting medical cannabis were fewer side effects (39%), better symptom control (27%), and fewer adverse effects (12%).
• Participants who substituted medical cannabis reported significant improvements in symptoms such as pain, sleep, joint stiffness, muscle spasms, and inflammation, and in overall health, compared with those who did not substitute it for medications.
• The substitution group was more likely to use inhalation methods (smoking and vaporizing) than the nonsubstitution group; they also used medical cannabis more frequently and preferred products containing delta-9-tetrahydrocannabinol.

IN PRACTICE:

“The changing legal status of cannabis has allowed a greater openness with more people willing to try cannabis for symptom relief. These encouraging results of medication reduction and favorable effect of [medical cannabis] require confirmation with more rigorous methods. At this time, survey information may be seen as a signal for effect, rather than sound evidence that could be applicable to those with musculoskeletal complaints in general,” the authors wrote. 

SOURCE:

The study was led by Kevin F. Boehnke, PhD, University of Michigan Medical School, Ann Arbor, and was published online in ACR Open Rheumatology.

LIMITATIONS: 

The cross-sectional nature of the study limited the determination of causality between medical cannabis use and symptom improvement. Moreover, the anonymous and self-reported nature of the survey at a single timepoint may have introduced recall bias. The sample predominantly consisted of older, White females, which may have limited the generalizability of the findings to other demographic groups.

DISCLOSURES:

Some authors received grant support from the National Institute on Drug Abuse and the National Institute of Arthritis and Musculoskeletal and Skin Diseases. Some others received payments, honoraria, grant funding, consulting fees, and travel support, and reported other ties with pharmaceutical companies and other institutions.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

Nearly two thirds of patients with rheumatic conditions switched to medical cannabis from medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) and opioids, with the substitution being associated with greater self-reported improvement in symptoms than nonsubstitution.

METHODOLOGY:

• Researchers conducted a secondary analysis of a cross-sectional survey to investigate the prevalence of switching to medical cannabis from traditional medications in patients with rheumatic conditions from the United States and Canada.
• The survey included questions on current and past medical cannabis use, sociodemographic characteristics, medication taken and substituted, substance use, and patient-reported outcomes.
• Of the 1727 patients who completed the survey, 763 patients (mean age, 59 years; 84.1% women) reported current use of cannabis and were included in this analysis.
• Participants were asked if they had substituted any medications with medical cannabis and were sub-grouped accordingly.
• They also reported any changes in symptoms after initiating cannabis, the current and anticipated duration of medical cannabis use, methods of ingestion, cannabinoid content, and frequency of use.

TAKEAWAY:

• Overall, 62.5% reported substituting medical cannabis for certain medications, including NSAIDs (54.7%), opioids (48.6%), sleep aids (29.6%), muscle relaxants (25.2%), benzodiazepines (15.5%), and gabapentinoids (10.5%).
• The most common reasons given for substituting medical cannabis were fewer side effects (39%), better symptom control (27%), and fewer adverse effects (12%).
• Participants who substituted medical cannabis reported significant improvements in symptoms such as pain, sleep, joint stiffness, muscle spasms, and inflammation, and in overall health, compared with those who did not substitute it for medications.
• The substitution group was more likely to use inhalation methods (smoking and vaporizing) than the nonsubstitution group; they also used medical cannabis more frequently and preferred products containing delta-9-tetrahydrocannabinol.

IN PRACTICE:

“The changing legal status of cannabis has allowed a greater openness with more people willing to try cannabis for symptom relief. These encouraging results of medication reduction and favorable effect of [medical cannabis] require confirmation with more rigorous methods. At this time, survey information may be seen as a signal for effect, rather than sound evidence that could be applicable to those with musculoskeletal complaints in general,” the authors wrote. 

SOURCE:

The study was led by Kevin F. Boehnke, PhD, University of Michigan Medical School, Ann Arbor, and was published online in ACR Open Rheumatology.

LIMITATIONS: 

The cross-sectional nature of the study limited the determination of causality between medical cannabis use and symptom improvement. Moreover, the anonymous and self-reported nature of the survey at a single timepoint may have introduced recall bias. The sample predominantly consisted of older, White females, which may have limited the generalizability of the findings to other demographic groups.

DISCLOSURES:

Some authors received grant support from the National Institute on Drug Abuse and the National Institute of Arthritis and Musculoskeletal and Skin Diseases. Some others received payments, honoraria, grant funding, consulting fees, and travel support, and reported other ties with pharmaceutical companies and other institutions.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

Nearly two thirds of patients with rheumatic conditions switched to medical cannabis from medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) and opioids, with the substitution being associated with greater self-reported improvement in symptoms than nonsubstitution.

METHODOLOGY:

• Researchers conducted a secondary analysis of a cross-sectional survey to investigate the prevalence of switching to medical cannabis from traditional medications in patients with rheumatic conditions from the United States and Canada.
• The survey included questions on current and past medical cannabis use, sociodemographic characteristics, medication taken and substituted, substance use, and patient-reported outcomes.
• Of the 1727 patients who completed the survey, 763 patients (mean age, 59 years; 84.1% women) reported current use of cannabis and were included in this analysis.
• Participants were asked if they had substituted any medications with medical cannabis and were sub-grouped accordingly.
• They also reported any changes in symptoms after initiating cannabis, the current and anticipated duration of medical cannabis use, methods of ingestion, cannabinoid content, and frequency of use.

TAKEAWAY:

• Overall, 62.5% reported substituting medical cannabis for certain medications, including NSAIDs (54.7%), opioids (48.6%), sleep aids (29.6%), muscle relaxants (25.2%), benzodiazepines (15.5%), and gabapentinoids (10.5%).
• The most common reasons given for substituting medical cannabis were fewer side effects (39%), better symptom control (27%), and fewer adverse effects (12%).
• Participants who substituted medical cannabis reported significant improvements in symptoms such as pain, sleep, joint stiffness, muscle spasms, and inflammation, and in overall health, compared with those who did not substitute it for medications.
• The substitution group was more likely to use inhalation methods (smoking and vaporizing) than the nonsubstitution group; they also used medical cannabis more frequently and preferred products containing delta-9-tetrahydrocannabinol.

IN PRACTICE:

“The changing legal status of cannabis has allowed a greater openness with more people willing to try cannabis for symptom relief. These encouraging results of medication reduction and favorable effect of [medical cannabis] require confirmation with more rigorous methods. At this time, survey information may be seen as a signal for effect, rather than sound evidence that could be applicable to those with musculoskeletal complaints in general,” the authors wrote. 

SOURCE:

The study was led by Kevin F. Boehnke, PhD, University of Michigan Medical School, Ann Arbor, and was published online in ACR Open Rheumatology.

LIMITATIONS: 

The cross-sectional nature of the study limited the determination of causality between medical cannabis use and symptom improvement. Moreover, the anonymous and self-reported nature of the survey at a single timepoint may have introduced recall bias. The sample predominantly consisted of older, White females, which may have limited the generalizability of the findings to other demographic groups.

DISCLOSURES:

Some authors received grant support from the National Institute on Drug Abuse and the National Institute of Arthritis and Musculoskeletal and Skin Diseases. Some others received payments, honoraria, grant funding, consulting fees, and travel support, and reported other ties with pharmaceutical companies and other institutions.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

For people with severe symptomatic hip osteoarthritis, total hip replacement (THR) alleviates hip pain and improves function much more effectively than a resistance training program supervised by a physiotherapist, according to the results of a randomized controlled clinical trial. 

In the PROHIP study, the mean increases in Oxford Hip Scores from baseline to 6 months were 15.9 points for THR and 4.5 points for resistance training. The 11.4-point difference in scores was both statistically and clinically significant, the study’s investigators reported in The New England Journal of Medicine. 

“Our results are clear: Surgery is superior to exercise in patients who have hip osteoarthritis and indication for surgery, and now we have finally proven that with the highest level of evidence,” corresponding author Thomas Frydendal, PT, PhD, MSc, told this news organization.

Frydendal, who was involved in the study while working on his PhD at University Hospital of Southern Denmark – Lillebaelt Hospital, Vejle, Denmark, the primary center for the trial, is now a postdoctoral researcher at the Department of Clinical Medicine, Aarhus University, and Department of Orthopedic Surgery, Aarhus University Hospital.

“We believe that our findings are pretty robust,” Frydendal added. “I think if someone in the world conducts a trial similar to ours, they will find fairly close or consistent findings, no matter what type of exercise they choose.”

Charlotte Dahl, Lillebaelt Hospital–University Hospital of Southern Denmark, Vejle Hospital

The PROHIP Study

THR is routinely recommended for the management of severe hip osteoarthritis, but since there are no clinical trial data on the effectiveness of this procedure as compared with first-line treatment such as resistance training, the PROHIP study was conceived. 

The trial was conducted at four Danish orthopedic centers and designed as a superiority study, the hypothesis being that THR would be better at alleviating self-reported hip pain and improving hip function than resistance training. 

Of a possible 1474 individuals with a clinical suspicion of hip osteoarthritis, 791 were deemed eligible for inclusion in the trial. Inclusion criteria were being aged 50 years or older and having an indication for THR based on the presence of hip pain and clinical and radiographic findings.

However, the majority (86%) declined to enter the study, with almost half (43%) deciding to have a THR and enroll in a parallel observational cohort. This meant that only 110 (14%) individuals agreed to participate and underwent randomization, which does limit the study’s generalizability, the PROHIP investigators acknowledged. 
 

Design and Study Population

The change in Oxford Hip Score from baseline to 6 months was selected as the primary outcome measure based on the findings of a prior qualitative study. This 12-item, patient-reported outcome measure gives a score ranging from 0 to 48, with higher scores indicating less hip pain and better hip function. The estimated minimal clinically important difference is a change of 5 points. 

After a baseline assessment, 53 of 109 individuals were randomly assigned to undergo THR and 56 to participate in the resistance training program. Overall, the mean age of participants was 67.6 years, and half were women. The average duration of hip pain was a median of 1.7 years. 

The median time to receipt of the allocated treatment was 2.8 months in the THR group and 0.5 months in the resistance training group. 

Those allocated to the THR group also underwent a “fast track” program that involved patient education, pain management, and early mobilization. 

The resistance training group received 12 weeks of exercise supervised by a physiotherapist and then offered 12 weeks of additional exercise conducted on their own. The physiotherapist-supervised exercise sessions were held twice weekly and lasted for 1 hour. These started with a 10-minute warm-up on a stationary bike, followed by a standard set of resistance-based exercises that included a leg press, hip extension, hip flexion, and hip abduction. 
 

‘Reassuring’ Results

In a comment, consultant orthopedic surgeon Antony Palmer, MA, BMBCh, DPhil, said: “It’s reassuring that patients with advanced symptomatic osteoarthritis do well with hip replacements.”

THR does of course come with the potential risk for complications, but “the rate of these is what you’d expect for that procedure,” Palmer said, who works for the Nuffield Orthopaedic Centre, Oxford University Hospital NHS Foundation Trust, and is a senior clinical research fellow at Oxford University in England.

Dr. Palmer

Resistance Training Role 

A notable finding was that, at 6 months, five (9%) people assigned to the THR arm had not undergone surgery, and 12 (21%) people in the resistance training group had undergone a THR.

This could suggest two things, Palmer suggested in the interview. The first is that there could be a small proportion of people assigned to THR who may not need the operation and do well with exercise therapy. And, conversely, there may be those who would do well having the surgery without first going through the intermediate stage of physical therapy. 

It’s a suggestion that “maybe we’ve got to refine that a bit better and identify the patients that really do benefit from physiotherapy and who might not need hip replacement as a result,” Palmer said.

Or in other words, “should all patients undergo a program of physiotherapy before considering surgery?” he added.
 

Authors’ View

The PROHIP investigators conclude: “These results support current recommendations for the management of hip osteoarthritis and may be used to inform and guide shared decision making in clinical practice.”

Moreover, the results “do not oppose the use of resistance training as initial treatment,” says the authors. 

Frydendal highlighted in his interview that nearly three out of four of the patients reported not to have undertaken any type of supervised exercise before entry into the study, which is a first-line, guideline-recommended option.

“If a patient tells me, ‘I haven’t done any exercise previously,’ I’d recommend starting with completing a 6- to 12-week exercise program that is tailored to your individual needs and evaluate your symptoms afterward,” he said. 

“But we should refer the patient if our first-line treatment does not offer any improvements in the patient’s symptoms, as surgery with total hip replacement is clearly a really good treatment option,” Frydendal said.

The study was funded by the Danish Rheumatism Association, among other independent bodies. Frydendal and Palmer reported no relevant financial relationships. 
 

A version of this article first appeared on Medscape.com.

For people with severe symptomatic hip osteoarthritis, total hip replacement (THR) alleviates hip pain and improves function much more effectively than a resistance training program supervised by a physiotherapist, according to the results of a randomized controlled clinical trial. 

In the PROHIP study, the mean increases in Oxford Hip Scores from baseline to 6 months were 15.9 points for THR and 4.5 points for resistance training. The 11.4-point difference in scores was both statistically and clinically significant, the study’s investigators reported in The New England Journal of Medicine. 

“Our results are clear: Surgery is superior to exercise in patients who have hip osteoarthritis and indication for surgery, and now we have finally proven that with the highest level of evidence,” corresponding author Thomas Frydendal, PT, PhD, MSc, told this news organization.

Frydendal, who was involved in the study while working on his PhD at University Hospital of Southern Denmark – Lillebaelt Hospital, Vejle, Denmark, the primary center for the trial, is now a postdoctoral researcher at the Department of Clinical Medicine, Aarhus University, and Department of Orthopedic Surgery, Aarhus University Hospital.

“We believe that our findings are pretty robust,” Frydendal added. “I think if someone in the world conducts a trial similar to ours, they will find fairly close or consistent findings, no matter what type of exercise they choose.”

Charlotte Dahl, Lillebaelt Hospital–University Hospital of Southern Denmark, Vejle Hospital

The PROHIP Study

THR is routinely recommended for the management of severe hip osteoarthritis, but since there are no clinical trial data on the effectiveness of this procedure as compared with first-line treatment such as resistance training, the PROHIP study was conceived. 

The trial was conducted at four Danish orthopedic centers and designed as a superiority study, the hypothesis being that THR would be better at alleviating self-reported hip pain and improving hip function than resistance training. 

Of a possible 1474 individuals with a clinical suspicion of hip osteoarthritis, 791 were deemed eligible for inclusion in the trial. Inclusion criteria were being aged 50 years or older and having an indication for THR based on the presence of hip pain and clinical and radiographic findings.

However, the majority (86%) declined to enter the study, with almost half (43%) deciding to have a THR and enroll in a parallel observational cohort. This meant that only 110 (14%) individuals agreed to participate and underwent randomization, which does limit the study’s generalizability, the PROHIP investigators acknowledged. 
 

Design and Study Population

The change in Oxford Hip Score from baseline to 6 months was selected as the primary outcome measure based on the findings of a prior qualitative study. This 12-item, patient-reported outcome measure gives a score ranging from 0 to 48, with higher scores indicating less hip pain and better hip function. The estimated minimal clinically important difference is a change of 5 points. 

After a baseline assessment, 53 of 109 individuals were randomly assigned to undergo THR and 56 to participate in the resistance training program. Overall, the mean age of participants was 67.6 years, and half were women. The average duration of hip pain was a median of 1.7 years. 

The median time to receipt of the allocated treatment was 2.8 months in the THR group and 0.5 months in the resistance training group. 

Those allocated to the THR group also underwent a “fast track” program that involved patient education, pain management, and early mobilization. 

The resistance training group received 12 weeks of exercise supervised by a physiotherapist and then offered 12 weeks of additional exercise conducted on their own. The physiotherapist-supervised exercise sessions were held twice weekly and lasted for 1 hour. These started with a 10-minute warm-up on a stationary bike, followed by a standard set of resistance-based exercises that included a leg press, hip extension, hip flexion, and hip abduction. 
 

‘Reassuring’ Results

In a comment, consultant orthopedic surgeon Antony Palmer, MA, BMBCh, DPhil, said: “It’s reassuring that patients with advanced symptomatic osteoarthritis do well with hip replacements.”

THR does of course come with the potential risk for complications, but “the rate of these is what you’d expect for that procedure,” Palmer said, who works for the Nuffield Orthopaedic Centre, Oxford University Hospital NHS Foundation Trust, and is a senior clinical research fellow at Oxford University in England.

Dr. Palmer

Resistance Training Role 

A notable finding was that, at 6 months, five (9%) people assigned to the THR arm had not undergone surgery, and 12 (21%) people in the resistance training group had undergone a THR.

This could suggest two things, Palmer suggested in the interview. The first is that there could be a small proportion of people assigned to THR who may not need the operation and do well with exercise therapy. And, conversely, there may be those who would do well having the surgery without first going through the intermediate stage of physical therapy. 

It’s a suggestion that “maybe we’ve got to refine that a bit better and identify the patients that really do benefit from physiotherapy and who might not need hip replacement as a result,” Palmer said.

Or in other words, “should all patients undergo a program of physiotherapy before considering surgery?” he added.
 

Authors’ View

The PROHIP investigators conclude: “These results support current recommendations for the management of hip osteoarthritis and may be used to inform and guide shared decision making in clinical practice.”

Moreover, the results “do not oppose the use of resistance training as initial treatment,” says the authors. 

Frydendal highlighted in his interview that nearly three out of four of the patients reported not to have undertaken any type of supervised exercise before entry into the study, which is a first-line, guideline-recommended option.

“If a patient tells me, ‘I haven’t done any exercise previously,’ I’d recommend starting with completing a 6- to 12-week exercise program that is tailored to your individual needs and evaluate your symptoms afterward,” he said. 

“But we should refer the patient if our first-line treatment does not offer any improvements in the patient’s symptoms, as surgery with total hip replacement is clearly a really good treatment option,” Frydendal said.

The study was funded by the Danish Rheumatism Association, among other independent bodies. Frydendal and Palmer reported no relevant financial relationships. 
 

A version of this article first appeared on Medscape.com.

For people with severe symptomatic hip osteoarthritis, total hip replacement (THR) alleviates hip pain and improves function much more effectively than a resistance training program supervised by a physiotherapist, according to the results of a randomized controlled clinical trial. 

In the PROHIP study, the mean increases in Oxford Hip Scores from baseline to 6 months were 15.9 points for THR and 4.5 points for resistance training. The 11.4-point difference in scores was both statistically and clinically significant, the study’s investigators reported in The New England Journal of Medicine. 

“Our results are clear: Surgery is superior to exercise in patients who have hip osteoarthritis and indication for surgery, and now we have finally proven that with the highest level of evidence,” corresponding author Thomas Frydendal, PT, PhD, MSc, told this news organization.

Frydendal, who was involved in the study while working on his PhD at University Hospital of Southern Denmark – Lillebaelt Hospital, Vejle, Denmark, the primary center for the trial, is now a postdoctoral researcher at the Department of Clinical Medicine, Aarhus University, and Department of Orthopedic Surgery, Aarhus University Hospital.

“We believe that our findings are pretty robust,” Frydendal added. “I think if someone in the world conducts a trial similar to ours, they will find fairly close or consistent findings, no matter what type of exercise they choose.”

Charlotte Dahl, Lillebaelt Hospital–University Hospital of Southern Denmark, Vejle Hospital

The PROHIP Study

THR is routinely recommended for the management of severe hip osteoarthritis, but since there are no clinical trial data on the effectiveness of this procedure as compared with first-line treatment such as resistance training, the PROHIP study was conceived. 

The trial was conducted at four Danish orthopedic centers and designed as a superiority study, the hypothesis being that THR would be better at alleviating self-reported hip pain and improving hip function than resistance training. 

Of a possible 1474 individuals with a clinical suspicion of hip osteoarthritis, 791 were deemed eligible for inclusion in the trial. Inclusion criteria were being aged 50 years or older and having an indication for THR based on the presence of hip pain and clinical and radiographic findings.

However, the majority (86%) declined to enter the study, with almost half (43%) deciding to have a THR and enroll in a parallel observational cohort. This meant that only 110 (14%) individuals agreed to participate and underwent randomization, which does limit the study’s generalizability, the PROHIP investigators acknowledged. 
 

Design and Study Population

The change in Oxford Hip Score from baseline to 6 months was selected as the primary outcome measure based on the findings of a prior qualitative study. This 12-item, patient-reported outcome measure gives a score ranging from 0 to 48, with higher scores indicating less hip pain and better hip function. The estimated minimal clinically important difference is a change of 5 points. 

After a baseline assessment, 53 of 109 individuals were randomly assigned to undergo THR and 56 to participate in the resistance training program. Overall, the mean age of participants was 67.6 years, and half were women. The average duration of hip pain was a median of 1.7 years. 

The median time to receipt of the allocated treatment was 2.8 months in the THR group and 0.5 months in the resistance training group. 

Those allocated to the THR group also underwent a “fast track” program that involved patient education, pain management, and early mobilization. 

The resistance training group received 12 weeks of exercise supervised by a physiotherapist and then offered 12 weeks of additional exercise conducted on their own. The physiotherapist-supervised exercise sessions were held twice weekly and lasted for 1 hour. These started with a 10-minute warm-up on a stationary bike, followed by a standard set of resistance-based exercises that included a leg press, hip extension, hip flexion, and hip abduction. 
 

‘Reassuring’ Results

In a comment, consultant orthopedic surgeon Antony Palmer, MA, BMBCh, DPhil, said: “It’s reassuring that patients with advanced symptomatic osteoarthritis do well with hip replacements.”

THR does of course come with the potential risk for complications, but “the rate of these is what you’d expect for that procedure,” Palmer said, who works for the Nuffield Orthopaedic Centre, Oxford University Hospital NHS Foundation Trust, and is a senior clinical research fellow at Oxford University in England.

Dr. Palmer

Resistance Training Role 

A notable finding was that, at 6 months, five (9%) people assigned to the THR arm had not undergone surgery, and 12 (21%) people in the resistance training group had undergone a THR.

This could suggest two things, Palmer suggested in the interview. The first is that there could be a small proportion of people assigned to THR who may not need the operation and do well with exercise therapy. And, conversely, there may be those who would do well having the surgery without first going through the intermediate stage of physical therapy. 

It’s a suggestion that “maybe we’ve got to refine that a bit better and identify the patients that really do benefit from physiotherapy and who might not need hip replacement as a result,” Palmer said.

Or in other words, “should all patients undergo a program of physiotherapy before considering surgery?” he added.
 

Authors’ View

The PROHIP investigators conclude: “These results support current recommendations for the management of hip osteoarthritis and may be used to inform and guide shared decision making in clinical practice.”

Moreover, the results “do not oppose the use of resistance training as initial treatment,” says the authors. 

Frydendal highlighted in his interview that nearly three out of four of the patients reported not to have undertaken any type of supervised exercise before entry into the study, which is a first-line, guideline-recommended option.

“If a patient tells me, ‘I haven’t done any exercise previously,’ I’d recommend starting with completing a 6- to 12-week exercise program that is tailored to your individual needs and evaluate your symptoms afterward,” he said. 

“But we should refer the patient if our first-line treatment does not offer any improvements in the patient’s symptoms, as surgery with total hip replacement is clearly a really good treatment option,” Frydendal said.

The study was funded by the Danish Rheumatism Association, among other independent bodies. Frydendal and Palmer reported no relevant financial relationships. 
 

A version of this article first appeared on Medscape.com.

TOPLINE:

The extended-release fluticasone propionate injection (EP-104IAR) significantly reduces knee osteoarthritis (OA) pain over 12 weeks, compared with a vehicle control, with no serious treatment-related adverse events.

METHODOLOGY:

• EP-104IAR utilizes a novel diffusion-based extended-release technology to optimize the action of fluticasone propionate.
• The researchers conducted a phase 2 trial at 12 research sites in Denmark, Poland, and the Czech Republic to assess the clinical efficacy, pharmacokinetics, and safety of EP-104IAR in 318 participants (58% women; 99% White) with a diagnosis of primary knee OA.
• Eligible patients, with a score of at least 4 out of 10 on the Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain rating scale, were randomly assigned to receive either 25 mg EP-104IAR (n = 163; mean age, 64 years) or a vehicle control (n = 155; mean age, 63.2 years).
• The primary outcome was the between-group difference in the change in the WOMAC pain score from baseline to week 12.

TAKEAWAY:

• The reduction in WOMAC pain scores from baseline to week 12 was significantly higher with EP-104IAR than with a vehicle control (between-group difference, −0.66; P = .0044), with the difference maintained through week 14.
• The treatment resulted in a significant improvement in WOMAC function scores (P = .014) and the area under the curve for changes in the WOMAC pain score (P < .0001) over 12 weeks.
• Treatment-emergent adverse events were noted in 9% of participants in the EP-104IAR group and 7% of participants in the vehicle control group. No serious treatment-related adverse events or discontinuations related to EP-104IAR were reported.
• Fluticasone propionate levels were maintained at around 66% to 33% of peak values between weeks 2 and 24 at near-constant levels. The effects on glucose and cortisol levels were minimal and transient.

IN PRACTICE:

“The results of this trial show that EP-104IAR has the potential for clinically meaningful benefit in reducing knee osteoarthritis pain, addressing a substantial unmet medical need,” the authors wrote. “Additionally, the stable delivery of fluticasone propionate over an extended period with fewer systemic and local side effects than other corticosteroid treatments for knee osteoarthritis support the possibility of bilateral and repeat dosing.”

SOURCE:

The study was led by Amanda Malone, PhD, Eupraxia Pharmaceuticals, Victoria, British Columbia, Canada. It was published online in The Lancet Rheumatology.

LIMITATIONS:

The study’s generalizability may be limited because of the predominantly White participant population. The success of masking was not evaluated, and the treatment was administered by an unmasked injector. Efficacy outcomes were patient-reported, with no objective measurement of knee function.

DISCLOSURES:

This study was supported by Eupraxia Pharmaceuticals. Some authors disclosed their employment with Eupraxia Pharmaceuticals or with companies contracted by Eupraxia Pharmaceuticals for clinical research and trial and data management. One author reported serving as a consultant or participating in a speakers’ bureau. Another reported being on the board of directors for Eupraxia Pharmaceuticals and receiving royalties from a medical technology company.

This article was created using several editorial tools, including artificial intelligence, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE:

The extended-release fluticasone propionate injection (EP-104IAR) significantly reduces knee osteoarthritis (OA) pain over 12 weeks, compared with a vehicle control, with no serious treatment-related adverse events.

METHODOLOGY:

• EP-104IAR utilizes a novel diffusion-based extended-release technology to optimize the action of fluticasone propionate.
• The researchers conducted a phase 2 trial at 12 research sites in Denmark, Poland, and the Czech Republic to assess the clinical efficacy, pharmacokinetics, and safety of EP-104IAR in 318 participants (58% women; 99% White) with a diagnosis of primary knee OA.
• Eligible patients, with a score of at least 4 out of 10 on the Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain rating scale, were randomly assigned to receive either 25 mg EP-104IAR (n = 163; mean age, 64 years) or a vehicle control (n = 155; mean age, 63.2 years).
• The primary outcome was the between-group difference in the change in the WOMAC pain score from baseline to week 12.

TAKEAWAY:

• The reduction in WOMAC pain scores from baseline to week 12 was significantly higher with EP-104IAR than with a vehicle control (between-group difference, −0.66; P = .0044), with the difference maintained through week 14.
• The treatment resulted in a significant improvement in WOMAC function scores (P = .014) and the area under the curve for changes in the WOMAC pain score (P < .0001) over 12 weeks.
• Treatment-emergent adverse events were noted in 9% of participants in the EP-104IAR group and 7% of participants in the vehicle control group. No serious treatment-related adverse events or discontinuations related to EP-104IAR were reported.
• Fluticasone propionate levels were maintained at around 66% to 33% of peak values between weeks 2 and 24 at near-constant levels. The effects on glucose and cortisol levels were minimal and transient.

IN PRACTICE:

“The results of this trial show that EP-104IAR has the potential for clinically meaningful benefit in reducing knee osteoarthritis pain, addressing a substantial unmet medical need,” the authors wrote. “Additionally, the stable delivery of fluticasone propionate over an extended period with fewer systemic and local side effects than other corticosteroid treatments for knee osteoarthritis support the possibility of bilateral and repeat dosing.”

SOURCE:

The study was led by Amanda Malone, PhD, Eupraxia Pharmaceuticals, Victoria, British Columbia, Canada. It was published online in The Lancet Rheumatology.

LIMITATIONS:

The study’s generalizability may be limited because of the predominantly White participant population. The success of masking was not evaluated, and the treatment was administered by an unmasked injector. Efficacy outcomes were patient-reported, with no objective measurement of knee function.

DISCLOSURES:

This study was supported by Eupraxia Pharmaceuticals. Some authors disclosed their employment with Eupraxia Pharmaceuticals or with companies contracted by Eupraxia Pharmaceuticals for clinical research and trial and data management. One author reported serving as a consultant or participating in a speakers’ bureau. Another reported being on the board of directors for Eupraxia Pharmaceuticals and receiving royalties from a medical technology company.

This article was created using several editorial tools, including artificial intelligence, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE:

The extended-release fluticasone propionate injection (EP-104IAR) significantly reduces knee osteoarthritis (OA) pain over 12 weeks, compared with a vehicle control, with no serious treatment-related adverse events.

METHODOLOGY:

• EP-104IAR utilizes a novel diffusion-based extended-release technology to optimize the action of fluticasone propionate.
• The researchers conducted a phase 2 trial at 12 research sites in Denmark, Poland, and the Czech Republic to assess the clinical efficacy, pharmacokinetics, and safety of EP-104IAR in 318 participants (58% women; 99% White) with a diagnosis of primary knee OA.
• Eligible patients, with a score of at least 4 out of 10 on the Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain rating scale, were randomly assigned to receive either 25 mg EP-104IAR (n = 163; mean age, 64 years) or a vehicle control (n = 155; mean age, 63.2 years).
• The primary outcome was the between-group difference in the change in the WOMAC pain score from baseline to week 12.

TAKEAWAY:

• The reduction in WOMAC pain scores from baseline to week 12 was significantly higher with EP-104IAR than with a vehicle control (between-group difference, −0.66; P = .0044), with the difference maintained through week 14.
• The treatment resulted in a significant improvement in WOMAC function scores (P = .014) and the area under the curve for changes in the WOMAC pain score (P < .0001) over 12 weeks.
• Treatment-emergent adverse events were noted in 9% of participants in the EP-104IAR group and 7% of participants in the vehicle control group. No serious treatment-related adverse events or discontinuations related to EP-104IAR were reported.
• Fluticasone propionate levels were maintained at around 66% to 33% of peak values between weeks 2 and 24 at near-constant levels. The effects on glucose and cortisol levels were minimal and transient.

IN PRACTICE:

“The results of this trial show that EP-104IAR has the potential for clinically meaningful benefit in reducing knee osteoarthritis pain, addressing a substantial unmet medical need,” the authors wrote. “Additionally, the stable delivery of fluticasone propionate over an extended period with fewer systemic and local side effects than other corticosteroid treatments for knee osteoarthritis support the possibility of bilateral and repeat dosing.”

SOURCE:

The study was led by Amanda Malone, PhD, Eupraxia Pharmaceuticals, Victoria, British Columbia, Canada. It was published online in The Lancet Rheumatology.

LIMITATIONS:

The study’s generalizability may be limited because of the predominantly White participant population. The success of masking was not evaluated, and the treatment was administered by an unmasked injector. Efficacy outcomes were patient-reported, with no objective measurement of knee function.

DISCLOSURES:

This study was supported by Eupraxia Pharmaceuticals. Some authors disclosed their employment with Eupraxia Pharmaceuticals or with companies contracted by Eupraxia Pharmaceuticals for clinical research and trial and data management. One author reported serving as a consultant or participating in a speakers’ bureau. Another reported being on the board of directors for Eupraxia Pharmaceuticals and receiving royalties from a medical technology company.

This article was created using several editorial tools, including artificial intelligence, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

Therapeutic drug monitoring (TDM) — the practice of using laboratory testing to measure blood levels of drugs — has garnered growing interest among rheumatologists in managing patients on disease-modifying antirheumatic drugs (DMARDs), but that hasn’t exactly translated to widespread practice.

While TDM has made some inroads with patients taking monoclonal antibodies, specifically infliximab, its uptake has encountered a number of headwinds, not the least of which is a lack of evidence and clinical guidelines, uneven access and standards of assays, and even an uncertainty about how to interpret laboratory results.

“In some fields, such as neurology, TDM is accepted for antiepileptics,” Michelle Petri, MD, MPH, director of the Johns Hopkins Lupus Center, Baltimore, told Medscape Medical News. “In rheumatology, though, TDM is underutilized and not adequately championed by the American College of Rheumatology.”

Johns Hopkins University

Duke University

Reactive vs Proactive TDM

Among the few trials that examined TDM in rheumatology patients are the NOR-DRUM A and B trials in Norway. Marthe Brun, MD, PhD, a rheumatologist at the Center for Treatment of Rheumatic and Musculoskeletal Diseases at Diakonhjemmet Hospital in Oslo, Norway, and a coauthor of the NOR-DRUM trials, told Medscape Medical News that the trials found an overall benefit to TDM during infliximab maintenance therapy. The trials included not only patients with inflammatory arthritis (rheumatoid arthritis, psoriatic arthritis, and spondyloarthritis) but also patients with inflammatory bowel disease and psoriasis, Brun said.

Nicolas Tourrenc

Brun explained that two types of TDM exist: Reactive and proactive. “Reactive TDM is when you use it to find the reason for a patient having a flare or disease worsening,” she told Medscape Medical News. “Proactive TDM would be regular testing to keep a patient within a therapeutic range to avoid flare because of low drug concentrations.”

Gastroenterologists are more inclined than rheumatologists and dermatologists to use reactive TDM, she said. “There have been no recommendations regarding proactive TDM because of the lack of data.”

In Europe, Wallace noted that European Alliance of Associations for Rheumatology (EULAR) recommendations consider the use of TDM in specific clinical scenarios, such as when treatment fails or to evaluate immunogenicity of a reaction, but they are limited. The American College of Rheumatology (ACR) does not have any recommendations for the use of TDM.

Based on the NOR-DRUM trials, rheumatologists in Norway have published their own guidelines for TDM for infliximab in rheumatologic disease, but they are in Norwegian and have not yet been taken up by EULAR, Brun noted. Publication of those recommendations in English is pending, she said.

“But for other subcutaneously administered TNF inhibitors, there’s a lack of data,” Brun added.
 

The State of the Evidence

NOR-DRUM A did not support the use of proactive TDM in the 30-week induction period as a way to improve disease remission in patients with chronic immune-mediated inflammatory disease. NOR-DRUM B, which evaluated TDM over a year, found the approach was more likely to lead to sustained disease control for that period.

Brun’s group recently published an analysis of the trials. “We did not find an overall effect during the initial phase of the treatment, the first 30 weeks,” she told Medscape Medical News.

“Then we looked at subgroups, and we found that the patients that developed antidrug antibodies [ADAs] had an effect, and ADA are associated with poorer outcomes as well as infusion reactions for patients treated with infliximab.

“So, it’s probably a benefit to be able to detect these ADA early before the patient experiences a disease flare or infusion reaction,” Brun added. “It facilitates for the clinician to take action to, for example, increase the dosing or switch therapy.”

However, the quality of the data supporting TDM in rheumatology is limited, Balevic said. “There’s very good observational data, but we have very few clinical trials that actually leverage TDM,” he said.

NOR-DRUM is the exception, he said. “Ideally, we need more of these dose-optimization trials to help guide clinical practice,” he said. But it stands alone.

Wallace noted several take-home messages from the NOR-DRUM trials, namely that using TDM to prevent ADA may be more effective during the maintenance phase of treatment than the induction phase. However, he said, the evidence is still emerging.

“It’s reasonable to say that we’re at an early stage of the evidence,” he said. “If you look at the large trials that have been done in rheumatology, they’ve combined patients with many different types of conditions, and a lot of our recommendations in rheumatology are disease-specific — in rheumatoid arthritis, in vasculitis. There’s a lack of data in specific diseases to guide or examine what the role of TDM might be.”

In the meantime, no fewer than four clinical trials evaluating TDM with tumor necrosis factor (TNF) inhibitors in rheumatologic diseases are ongoing or have completed but not yet released results, according to Wallace. Three Adalimumab Drug Optimization in Rheumatoid Arthritis trials are underway: The first is evaluating drug tapering vs disease activity score; the second is testing low or usual drug concentration; and the third is studying switches to etanercept or a non-TNF inhibitor drug (abatacept, rituximab, tocilizumab, or sarilumab) in patients failing treatment. Another trial called Tocilizumab Drug Levels to Optimized Treatment in RA is randomizing patients with high drug levels to dose maintenance or dose reduction. All four trials are sponsored by the Reade Rheumatology Research Institute, Amsterdam, the Netherlands.

Until clearer answers emerge from clinical trials, a number of barriers to and questions about the potential for TDM in rheumatology persist.
 

Barriers to Wider Use of TDM

“The biggest barrier with TDM is simply just a lack of what to do with the data,” Balevic said. “The clinician needs clear-cut guidance on what to do with the drug level. So, in other words, what is the target concentration for the drug? And if that target is not the goal, how should that dose be adjusted?”

The optimal drug levels, particularly for the older conventional synthetic DMARDs, simply have not been validated by clinical trials, he said.

“Different studies may report different target drug levels, and this could be due to different underlying population, or a different matrix — a measure of whole blood vs plasma — or even the timing of the sample,” he said. Balevic led a pharmacokinetic study earlier this year that proposed an algorithm for determining the number of missed hydroxychloroquine doses.

“This really goes back to the clinician needing to draw on a lot of pharmacology training to interpret the literature,” Balevic added.

That gets to the need for more education among rheumatologists, as Brun pointed out. “The physician needs to be educated about therapeutic ranges, when to assess concentrations of drug antibodies, and how to react to the results,” Brun said.

Which ADAs to identify is also problematic. “For antidrug antibodies, it’s especially challenging because there are so many assay formats in use, and it’s a bit complicated to analyze these antidrug antibodies,” Brun said. “There’s no consensus on what calibrators to use, and there’s no standardization of how to report the results, so you can’t really compare results from different assays. You need to know what your laboratory is using and how to interpret results from that particular assay, so that’s a challenge.”

Variability in drug tolerance also exists across assays, Wallace noted. “One of the challenges that have come up in the discussion of therapeutic drug monitoring is understanding what the target level is,” he said. “Defining what the target level might be for a specific condition is not something that’s well understood.”

Breaking down the science, he noted that an ADA can bind to a monoclonal antibody, forming an immune complex that avoids detection. Drug-sensitive assays may detect high concentrations of ADAs but miss low or moderate concentrations. Drug-tolerant assays may be more likely to detect low concentrations at ADAs, but the clinical significance is unclear.
 

Cost and Patient Trust as Barriers

“The costs vary a lot from assay to assay,” Brun said. “Some commercial assays can be really expensive.” In Norway, a dedicated lab with its own in-house assays helps to keep costs down, she said.

But that’s not the case in the United States, where insurance coverage can be a question mark, Shivani Garg, MD, a rheumatologist at the University of Wisconsin (UW)-Madison and director of the UW-Madison Health Lupus and Lupus Nephritis Clinics, told Medscape Medical News. “A lot of insurances are covering therapeutic drug monitoring, but for the high-deductible plans, there should be a way to offer these important tests to patients at a lower cost or figure out a way for coverage for those patients so that they can show that there are benefits of therapeutic drug monitoring without being sent a really big bill,” she said.

UW Health

Who May Benefit Most From TDM?

In the NOR-DRUM trials, patients at risk of developing ADA early on, before a disease flare or infusion reaction, seemed to benefit most from TDM. But who are those patients?

“We looked at risk factors for developing antidrug antibodies, and we found that patients with high disease activity when starting treatment, smokers, and patients with rheumatoid arthritis had a higher risk than other patients, as did patients who are not using concomitant immunosuppressive therapy,” Brun said.

“During treatment, we also found that low serum drug levels and drug holidays above 11 weeks were also risk factors,” she added.

The NOR-DRUM researchers also evaluated genetic risk factors and found that patients with the HLA-DQ2 gene variant were also at increased risk of developing ADA.

While NOR-DRUM evaluated only infliximab, some of its lessons may be applied to other DMARDs, Brun said. “We think that for other subcutaneously administered TNF inhibitors, you would probably see the same effect of proactive TDM, but we currently do not have data on that,” she said. A study similar to the NOR-DRUM design will evaluate this in Norway, Brun added.

She explained why the findings with infliximab may extend to adalimumab, which may be the second most immunogenic TNF inhibitor after infliximab. “The administration is different; it’s administered more often than infliximab; that would also make the results more uncertain to generalize to the other treatments, but I would guess there are also benefits of using TDM in other treatments.”
 

Potential Risks for TDM

Wallace has noted that TDM, with the current state of evidence, carries a number of potential risks. “The potential risks might be that you unnecessarily discontinue a medication because you detected an antibody, or the level seems low and you’re not able to get it higher, but the patient is otherwise doing fine,” he said. “You might end up increasing doses of the medicine that would put the patient at potentially increased risk of infection, as well as obviously more costs.”

That would also lead to more utilization of resources and costs, he said. “Some of those reasons are why there has been hesitation with therapeutic drug monitoring,” Wallace added.

A number of questions also surround the use of biosimilars and ADA levels, Wallace said. While a review of clinical trials found no meaningful differences in terms of immunogenicity between biosimilars and reference products, it did note discrepancies in how the agents were evaluated.
 

What DMARDs Are Most Suitable for TDM?

Petri said TDM would be useful for monitoring patients on mycophenolate mofetil. “A trough level can at least tell us if a patient is taking it,” she said. “Tacrolimus, used for lupus nephritis, has well-accepted peak and trough trends due to widespread use in transplant.”

Drugs with a wide variability in pharmacokinetics may also be suitable for TDM, Balevic said. That would include hydroxychloroquine, azathioprine, mycophenolate, or even cyclophosphamide. Drugs that have a narrow therapeutic index, such as tacrolimus, cyclosporine, or again, cyclophosphamide, might also be amenable to TDM, he said.
 

Why Do TDM?

“The two main reasons why somebody would go on to detect drug levels: The first may be to assess medication adherence, and this applies virtually to any drug that rheumatologists use; the second reason is to optimize dozing, either for efficacy purposes or to prevent toxicity,” Balevic said.

“When it comes to optimizing dosing, you should really think about TDM as one tool in our toolbelt,” he said.

Dose is “just a surrogate,” he said. “When we prescribe a drug, what truly matters is the amount of active unbound drug at the site of action. That’s what’s responsible for a drug’s pharmacologic effect.”

However, the same dose, or even the same weight-based dose, does not necessarily mean similar patients will achieve the same amount of exposure to the drug, but TDM can help determine that, he said.
 

What’s Next

Studies into the use of TDM in rheumatology are ongoing. Brun said her group is currently conducting a cost-effective analysis from the NOR-DRUM trials.

“There’s going to be more studies coming out in the next few years, looking at what impact the use of therapeutic drug monitoring might have on outcomes,” Wallace said.

“As we accumulate more and more evidence, we might see organizations like ACR and EULAR start to weigh in more on whether or not therapeutic drug monitoring can or should be used.”

Petri, Brun, and Garg had no relevant disclosures. Wallace disclosed financial relationships with Amgen, Alexion, BioCryst, Boehringer Ingelheim, Bristol Myers Squibb, Medpace, Novartis, Sanofi, Viela Bio, Visterra, Xencor, and Zenas. Balevic disclosed relationships with the National Institutes of Health, the Childhood Arthritis and Rheumatology Research Alliance, and UCB.
 

A version of this article appeared on Medscape.com.

Therapeutic drug monitoring (TDM) — the practice of using laboratory testing to measure blood levels of drugs — has garnered growing interest among rheumatologists in managing patients on disease-modifying antirheumatic drugs (DMARDs), but that hasn’t exactly translated to widespread practice.

While TDM has made some inroads with patients taking monoclonal antibodies, specifically infliximab, its uptake has encountered a number of headwinds, not the least of which is a lack of evidence and clinical guidelines, uneven access and standards of assays, and even an uncertainty about how to interpret laboratory results.

“In some fields, such as neurology, TDM is accepted for antiepileptics,” Michelle Petri, MD, MPH, director of the Johns Hopkins Lupus Center, Baltimore, told Medscape Medical News. “In rheumatology, though, TDM is underutilized and not adequately championed by the American College of Rheumatology.”

Johns Hopkins University

Duke University

Reactive vs Proactive TDM

Among the few trials that examined TDM in rheumatology patients are the NOR-DRUM A and B trials in Norway. Marthe Brun, MD, PhD, a rheumatologist at the Center for Treatment of Rheumatic and Musculoskeletal Diseases at Diakonhjemmet Hospital in Oslo, Norway, and a coauthor of the NOR-DRUM trials, told Medscape Medical News that the trials found an overall benefit to TDM during infliximab maintenance therapy. The trials included not only patients with inflammatory arthritis (rheumatoid arthritis, psoriatic arthritis, and spondyloarthritis) but also patients with inflammatory bowel disease and psoriasis, Brun said.

Nicolas Tourrenc

Brun explained that two types of TDM exist: Reactive and proactive. “Reactive TDM is when you use it to find the reason for a patient having a flare or disease worsening,” she told Medscape Medical News. “Proactive TDM would be regular testing to keep a patient within a therapeutic range to avoid flare because of low drug concentrations.”

Gastroenterologists are more inclined than rheumatologists and dermatologists to use reactive TDM, she said. “There have been no recommendations regarding proactive TDM because of the lack of data.”

In Europe, Wallace noted that European Alliance of Associations for Rheumatology (EULAR) recommendations consider the use of TDM in specific clinical scenarios, such as when treatment fails or to evaluate immunogenicity of a reaction, but they are limited. The American College of Rheumatology (ACR) does not have any recommendations for the use of TDM.

Based on the NOR-DRUM trials, rheumatologists in Norway have published their own guidelines for TDM for infliximab in rheumatologic disease, but they are in Norwegian and have not yet been taken up by EULAR, Brun noted. Publication of those recommendations in English is pending, she said.

“But for other subcutaneously administered TNF inhibitors, there’s a lack of data,” Brun added.
 

The State of the Evidence

NOR-DRUM A did not support the use of proactive TDM in the 30-week induction period as a way to improve disease remission in patients with chronic immune-mediated inflammatory disease. NOR-DRUM B, which evaluated TDM over a year, found the approach was more likely to lead to sustained disease control for that period.

Brun’s group recently published an analysis of the trials. “We did not find an overall effect during the initial phase of the treatment, the first 30 weeks,” she told Medscape Medical News.

“Then we looked at subgroups, and we found that the patients that developed antidrug antibodies [ADAs] had an effect, and ADA are associated with poorer outcomes as well as infusion reactions for patients treated with infliximab.

“So, it’s probably a benefit to be able to detect these ADA early before the patient experiences a disease flare or infusion reaction,” Brun added. “It facilitates for the clinician to take action to, for example, increase the dosing or switch therapy.”

However, the quality of the data supporting TDM in rheumatology is limited, Balevic said. “There’s very good observational data, but we have very few clinical trials that actually leverage TDM,” he said.

NOR-DRUM is the exception, he said. “Ideally, we need more of these dose-optimization trials to help guide clinical practice,” he said. But it stands alone.

Wallace noted several take-home messages from the NOR-DRUM trials, namely that using TDM to prevent ADA may be more effective during the maintenance phase of treatment than the induction phase. However, he said, the evidence is still emerging.

“It’s reasonable to say that we’re at an early stage of the evidence,” he said. “If you look at the large trials that have been done in rheumatology, they’ve combined patients with many different types of conditions, and a lot of our recommendations in rheumatology are disease-specific — in rheumatoid arthritis, in vasculitis. There’s a lack of data in specific diseases to guide or examine what the role of TDM might be.”

In the meantime, no fewer than four clinical trials evaluating TDM with tumor necrosis factor (TNF) inhibitors in rheumatologic diseases are ongoing or have completed but not yet released results, according to Wallace. Three Adalimumab Drug Optimization in Rheumatoid Arthritis trials are underway: The first is evaluating drug tapering vs disease activity score; the second is testing low or usual drug concentration; and the third is studying switches to etanercept or a non-TNF inhibitor drug (abatacept, rituximab, tocilizumab, or sarilumab) in patients failing treatment. Another trial called Tocilizumab Drug Levels to Optimized Treatment in RA is randomizing patients with high drug levels to dose maintenance or dose reduction. All four trials are sponsored by the Reade Rheumatology Research Institute, Amsterdam, the Netherlands.

Until clearer answers emerge from clinical trials, a number of barriers to and questions about the potential for TDM in rheumatology persist.
 

Barriers to Wider Use of TDM

“The biggest barrier with TDM is simply just a lack of what to do with the data,” Balevic said. “The clinician needs clear-cut guidance on what to do with the drug level. So, in other words, what is the target concentration for the drug? And if that target is not the goal, how should that dose be adjusted?”

The optimal drug levels, particularly for the older conventional synthetic DMARDs, simply have not been validated by clinical trials, he said.

“Different studies may report different target drug levels, and this could be due to different underlying population, or a different matrix — a measure of whole blood vs plasma — or even the timing of the sample,” he said. Balevic led a pharmacokinetic study earlier this year that proposed an algorithm for determining the number of missed hydroxychloroquine doses.

“This really goes back to the clinician needing to draw on a lot of pharmacology training to interpret the literature,” Balevic added.

That gets to the need for more education among rheumatologists, as Brun pointed out. “The physician needs to be educated about therapeutic ranges, when to assess concentrations of drug antibodies, and how to react to the results,” Brun said.

Which ADAs to identify is also problematic. “For antidrug antibodies, it’s especially challenging because there are so many assay formats in use, and it’s a bit complicated to analyze these antidrug antibodies,” Brun said. “There’s no consensus on what calibrators to use, and there’s no standardization of how to report the results, so you can’t really compare results from different assays. You need to know what your laboratory is using and how to interpret results from that particular assay, so that’s a challenge.”

Variability in drug tolerance also exists across assays, Wallace noted. “One of the challenges that have come up in the discussion of therapeutic drug monitoring is understanding what the target level is,” he said. “Defining what the target level might be for a specific condition is not something that’s well understood.”

Breaking down the science, he noted that an ADA can bind to a monoclonal antibody, forming an immune complex that avoids detection. Drug-sensitive assays may detect high concentrations of ADAs but miss low or moderate concentrations. Drug-tolerant assays may be more likely to detect low concentrations at ADAs, but the clinical significance is unclear.
 

Cost and Patient Trust as Barriers

“The costs vary a lot from assay to assay,” Brun said. “Some commercial assays can be really expensive.” In Norway, a dedicated lab with its own in-house assays helps to keep costs down, she said.

But that’s not the case in the United States, where insurance coverage can be a question mark, Shivani Garg, MD, a rheumatologist at the University of Wisconsin (UW)-Madison and director of the UW-Madison Health Lupus and Lupus Nephritis Clinics, told Medscape Medical News. “A lot of insurances are covering therapeutic drug monitoring, but for the high-deductible plans, there should be a way to offer these important tests to patients at a lower cost or figure out a way for coverage for those patients so that they can show that there are benefits of therapeutic drug monitoring without being sent a really big bill,” she said.

UW Health

Who May Benefit Most From TDM?

In the NOR-DRUM trials, patients at risk of developing ADA early on, before a disease flare or infusion reaction, seemed to benefit most from TDM. But who are those patients?

“We looked at risk factors for developing antidrug antibodies, and we found that patients with high disease activity when starting treatment, smokers, and patients with rheumatoid arthritis had a higher risk than other patients, as did patients who are not using concomitant immunosuppressive therapy,” Brun said.

“During treatment, we also found that low serum drug levels and drug holidays above 11 weeks were also risk factors,” she added.

The NOR-DRUM researchers also evaluated genetic risk factors and found that patients with the HLA-DQ2 gene variant were also at increased risk of developing ADA.

While NOR-DRUM evaluated only infliximab, some of its lessons may be applied to other DMARDs, Brun said. “We think that for other subcutaneously administered TNF inhibitors, you would probably see the same effect of proactive TDM, but we currently do not have data on that,” she said. A study similar to the NOR-DRUM design will evaluate this in Norway, Brun added.

She explained why the findings with infliximab may extend to adalimumab, which may be the second most immunogenic TNF inhibitor after infliximab. “The administration is different; it’s administered more often than infliximab; that would also make the results more uncertain to generalize to the other treatments, but I would guess there are also benefits of using TDM in other treatments.”
 

Potential Risks for TDM

Wallace has noted that TDM, with the current state of evidence, carries a number of potential risks. “The potential risks might be that you unnecessarily discontinue a medication because you detected an antibody, or the level seems low and you’re not able to get it higher, but the patient is otherwise doing fine,” he said. “You might end up increasing doses of the medicine that would put the patient at potentially increased risk of infection, as well as obviously more costs.”

That would also lead to more utilization of resources and costs, he said. “Some of those reasons are why there has been hesitation with therapeutic drug monitoring,” Wallace added.

A number of questions also surround the use of biosimilars and ADA levels, Wallace said. While a review of clinical trials found no meaningful differences in terms of immunogenicity between biosimilars and reference products, it did note discrepancies in how the agents were evaluated.
 

What DMARDs Are Most Suitable for TDM?

Petri said TDM would be useful for monitoring patients on mycophenolate mofetil. “A trough level can at least tell us if a patient is taking it,” she said. “Tacrolimus, used for lupus nephritis, has well-accepted peak and trough trends due to widespread use in transplant.”

Drugs with a wide variability in pharmacokinetics may also be suitable for TDM, Balevic said. That would include hydroxychloroquine, azathioprine, mycophenolate, or even cyclophosphamide. Drugs that have a narrow therapeutic index, such as tacrolimus, cyclosporine, or again, cyclophosphamide, might also be amenable to TDM, he said.
 

Why Do TDM?

“The two main reasons why somebody would go on to detect drug levels: The first may be to assess medication adherence, and this applies virtually to any drug that rheumatologists use; the second reason is to optimize dozing, either for efficacy purposes or to prevent toxicity,” Balevic said.

“When it comes to optimizing dosing, you should really think about TDM as one tool in our toolbelt,” he said.

Dose is “just a surrogate,” he said. “When we prescribe a drug, what truly matters is the amount of active unbound drug at the site of action. That’s what’s responsible for a drug’s pharmacologic effect.”

However, the same dose, or even the same weight-based dose, does not necessarily mean similar patients will achieve the same amount of exposure to the drug, but TDM can help determine that, he said.
 

What’s Next

Studies into the use of TDM in rheumatology are ongoing. Brun said her group is currently conducting a cost-effective analysis from the NOR-DRUM trials.

“There’s going to be more studies coming out in the next few years, looking at what impact the use of therapeutic drug monitoring might have on outcomes,” Wallace said.

“As we accumulate more and more evidence, we might see organizations like ACR and EULAR start to weigh in more on whether or not therapeutic drug monitoring can or should be used.”

Petri, Brun, and Garg had no relevant disclosures. Wallace disclosed financial relationships with Amgen, Alexion, BioCryst, Boehringer Ingelheim, Bristol Myers Squibb, Medpace, Novartis, Sanofi, Viela Bio, Visterra, Xencor, and Zenas. Balevic disclosed relationships with the National Institutes of Health, the Childhood Arthritis and Rheumatology Research Alliance, and UCB.
 

A version of this article appeared on Medscape.com.

Therapeutic drug monitoring (TDM) — the practice of using laboratory testing to measure blood levels of drugs — has garnered growing interest among rheumatologists in managing patients on disease-modifying antirheumatic drugs (DMARDs), but that hasn’t exactly translated to widespread practice.

While TDM has made some inroads with patients taking monoclonal antibodies, specifically infliximab, its uptake has encountered a number of headwinds, not the least of which is a lack of evidence and clinical guidelines, uneven access and standards of assays, and even an uncertainty about how to interpret laboratory results.

“In some fields, such as neurology, TDM is accepted for antiepileptics,” Michelle Petri, MD, MPH, director of the Johns Hopkins Lupus Center, Baltimore, told Medscape Medical News. “In rheumatology, though, TDM is underutilized and not adequately championed by the American College of Rheumatology.”

Johns Hopkins University

Duke University

Reactive vs Proactive TDM

Among the few trials that examined TDM in rheumatology patients are the NOR-DRUM A and B trials in Norway. Marthe Brun, MD, PhD, a rheumatologist at the Center for Treatment of Rheumatic and Musculoskeletal Diseases at Diakonhjemmet Hospital in Oslo, Norway, and a coauthor of the NOR-DRUM trials, told Medscape Medical News that the trials found an overall benefit to TDM during infliximab maintenance therapy. The trials included not only patients with inflammatory arthritis (rheumatoid arthritis, psoriatic arthritis, and spondyloarthritis) but also patients with inflammatory bowel disease and psoriasis, Brun said.

Nicolas Tourrenc

Brun explained that two types of TDM exist: Reactive and proactive. “Reactive TDM is when you use it to find the reason for a patient having a flare or disease worsening,” she told Medscape Medical News. “Proactive TDM would be regular testing to keep a patient within a therapeutic range to avoid flare because of low drug concentrations.”

Gastroenterologists are more inclined than rheumatologists and dermatologists to use reactive TDM, she said. “There have been no recommendations regarding proactive TDM because of the lack of data.”

In Europe, Wallace noted that European Alliance of Associations for Rheumatology (EULAR) recommendations consider the use of TDM in specific clinical scenarios, such as when treatment fails or to evaluate immunogenicity of a reaction, but they are limited. The American College of Rheumatology (ACR) does not have any recommendations for the use of TDM.

Based on the NOR-DRUM trials, rheumatologists in Norway have published their own guidelines for TDM for infliximab in rheumatologic disease, but they are in Norwegian and have not yet been taken up by EULAR, Brun noted. Publication of those recommendations in English is pending, she said.

“But for other subcutaneously administered TNF inhibitors, there’s a lack of data,” Brun added.
 

The State of the Evidence

NOR-DRUM A did not support the use of proactive TDM in the 30-week induction period as a way to improve disease remission in patients with chronic immune-mediated inflammatory disease. NOR-DRUM B, which evaluated TDM over a year, found the approach was more likely to lead to sustained disease control for that period.

Brun’s group recently published an analysis of the trials. “We did not find an overall effect during the initial phase of the treatment, the first 30 weeks,” she told Medscape Medical News.

“Then we looked at subgroups, and we found that the patients that developed antidrug antibodies [ADAs] had an effect, and ADA are associated with poorer outcomes as well as infusion reactions for patients treated with infliximab.

“So, it’s probably a benefit to be able to detect these ADA early before the patient experiences a disease flare or infusion reaction,” Brun added. “It facilitates for the clinician to take action to, for example, increase the dosing or switch therapy.”

However, the quality of the data supporting TDM in rheumatology is limited, Balevic said. “There’s very good observational data, but we have very few clinical trials that actually leverage TDM,” he said.

NOR-DRUM is the exception, he said. “Ideally, we need more of these dose-optimization trials to help guide clinical practice,” he said. But it stands alone.

Wallace noted several take-home messages from the NOR-DRUM trials, namely that using TDM to prevent ADA may be more effective during the maintenance phase of treatment than the induction phase. However, he said, the evidence is still emerging.

“It’s reasonable to say that we’re at an early stage of the evidence,” he said. “If you look at the large trials that have been done in rheumatology, they’ve combined patients with many different types of conditions, and a lot of our recommendations in rheumatology are disease-specific — in rheumatoid arthritis, in vasculitis. There’s a lack of data in specific diseases to guide or examine what the role of TDM might be.”

In the meantime, no fewer than four clinical trials evaluating TDM with tumor necrosis factor (TNF) inhibitors in rheumatologic diseases are ongoing or have completed but not yet released results, according to Wallace. Three Adalimumab Drug Optimization in Rheumatoid Arthritis trials are underway: The first is evaluating drug tapering vs disease activity score; the second is testing low or usual drug concentration; and the third is studying switches to etanercept or a non-TNF inhibitor drug (abatacept, rituximab, tocilizumab, or sarilumab) in patients failing treatment. Another trial called Tocilizumab Drug Levels to Optimized Treatment in RA is randomizing patients with high drug levels to dose maintenance or dose reduction. All four trials are sponsored by the Reade Rheumatology Research Institute, Amsterdam, the Netherlands.

Until clearer answers emerge from clinical trials, a number of barriers to and questions about the potential for TDM in rheumatology persist.
 

Barriers to Wider Use of TDM

“The biggest barrier with TDM is simply just a lack of what to do with the data,” Balevic said. “The clinician needs clear-cut guidance on what to do with the drug level. So, in other words, what is the target concentration for the drug? And if that target is not the goal, how should that dose be adjusted?”

The optimal drug levels, particularly for the older conventional synthetic DMARDs, simply have not been validated by clinical trials, he said.

“Different studies may report different target drug levels, and this could be due to different underlying population, or a different matrix — a measure of whole blood vs plasma — or even the timing of the sample,” he said. Balevic led a pharmacokinetic study earlier this year that proposed an algorithm for determining the number of missed hydroxychloroquine doses.

“This really goes back to the clinician needing to draw on a lot of pharmacology training to interpret the literature,” Balevic added.

That gets to the need for more education among rheumatologists, as Brun pointed out. “The physician needs to be educated about therapeutic ranges, when to assess concentrations of drug antibodies, and how to react to the results,” Brun said.

Which ADAs to identify is also problematic. “For antidrug antibodies, it’s especially challenging because there are so many assay formats in use, and it’s a bit complicated to analyze these antidrug antibodies,” Brun said. “There’s no consensus on what calibrators to use, and there’s no standardization of how to report the results, so you can’t really compare results from different assays. You need to know what your laboratory is using and how to interpret results from that particular assay, so that’s a challenge.”

Variability in drug tolerance also exists across assays, Wallace noted. “One of the challenges that have come up in the discussion of therapeutic drug monitoring is understanding what the target level is,” he said. “Defining what the target level might be for a specific condition is not something that’s well understood.”

Breaking down the science, he noted that an ADA can bind to a monoclonal antibody, forming an immune complex that avoids detection. Drug-sensitive assays may detect high concentrations of ADAs but miss low or moderate concentrations. Drug-tolerant assays may be more likely to detect low concentrations at ADAs, but the clinical significance is unclear.
 

Cost and Patient Trust as Barriers

“The costs vary a lot from assay to assay,” Brun said. “Some commercial assays can be really expensive.” In Norway, a dedicated lab with its own in-house assays helps to keep costs down, she said.

But that’s not the case in the United States, where insurance coverage can be a question mark, Shivani Garg, MD, a rheumatologist at the University of Wisconsin (UW)-Madison and director of the UW-Madison Health Lupus and Lupus Nephritis Clinics, told Medscape Medical News. “A lot of insurances are covering therapeutic drug monitoring, but for the high-deductible plans, there should be a way to offer these important tests to patients at a lower cost or figure out a way for coverage for those patients so that they can show that there are benefits of therapeutic drug monitoring without being sent a really big bill,” she said.

UW Health

Who May Benefit Most From TDM?

In the NOR-DRUM trials, patients at risk of developing ADA early on, before a disease flare or infusion reaction, seemed to benefit most from TDM. But who are those patients?

“We looked at risk factors for developing antidrug antibodies, and we found that patients with high disease activity when starting treatment, smokers, and patients with rheumatoid arthritis had a higher risk than other patients, as did patients who are not using concomitant immunosuppressive therapy,” Brun said.

“During treatment, we also found that low serum drug levels and drug holidays above 11 weeks were also risk factors,” she added.

The NOR-DRUM researchers also evaluated genetic risk factors and found that patients with the HLA-DQ2 gene variant were also at increased risk of developing ADA.

While NOR-DRUM evaluated only infliximab, some of its lessons may be applied to other DMARDs, Brun said. “We think that for other subcutaneously administered TNF inhibitors, you would probably see the same effect of proactive TDM, but we currently do not have data on that,” she said. A study similar to the NOR-DRUM design will evaluate this in Norway, Brun added.

She explained why the findings with infliximab may extend to adalimumab, which may be the second most immunogenic TNF inhibitor after infliximab. “The administration is different; it’s administered more often than infliximab; that would also make the results more uncertain to generalize to the other treatments, but I would guess there are also benefits of using TDM in other treatments.”
 

Potential Risks for TDM

Wallace has noted that TDM, with the current state of evidence, carries a number of potential risks. “The potential risks might be that you unnecessarily discontinue a medication because you detected an antibody, or the level seems low and you’re not able to get it higher, but the patient is otherwise doing fine,” he said. “You might end up increasing doses of the medicine that would put the patient at potentially increased risk of infection, as well as obviously more costs.”

That would also lead to more utilization of resources and costs, he said. “Some of those reasons are why there has been hesitation with therapeutic drug monitoring,” Wallace added.

A number of questions also surround the use of biosimilars and ADA levels, Wallace said. While a review of clinical trials found no meaningful differences in terms of immunogenicity between biosimilars and reference products, it did note discrepancies in how the agents were evaluated.
 

What DMARDs Are Most Suitable for TDM?

Petri said TDM would be useful for monitoring patients on mycophenolate mofetil. “A trough level can at least tell us if a patient is taking it,” she said. “Tacrolimus, used for lupus nephritis, has well-accepted peak and trough trends due to widespread use in transplant.”

Drugs with a wide variability in pharmacokinetics may also be suitable for TDM, Balevic said. That would include hydroxychloroquine, azathioprine, mycophenolate, or even cyclophosphamide. Drugs that have a narrow therapeutic index, such as tacrolimus, cyclosporine, or again, cyclophosphamide, might also be amenable to TDM, he said.
 

Why Do TDM?

“The two main reasons why somebody would go on to detect drug levels: The first may be to assess medication adherence, and this applies virtually to any drug that rheumatologists use; the second reason is to optimize dozing, either for efficacy purposes or to prevent toxicity,” Balevic said.

“When it comes to optimizing dosing, you should really think about TDM as one tool in our toolbelt,” he said.

Dose is “just a surrogate,” he said. “When we prescribe a drug, what truly matters is the amount of active unbound drug at the site of action. That’s what’s responsible for a drug’s pharmacologic effect.”

However, the same dose, or even the same weight-based dose, does not necessarily mean similar patients will achieve the same amount of exposure to the drug, but TDM can help determine that, he said.
 

What’s Next

Studies into the use of TDM in rheumatology are ongoing. Brun said her group is currently conducting a cost-effective analysis from the NOR-DRUM trials.

“There’s going to be more studies coming out in the next few years, looking at what impact the use of therapeutic drug monitoring might have on outcomes,” Wallace said.

“As we accumulate more and more evidence, we might see organizations like ACR and EULAR start to weigh in more on whether or not therapeutic drug monitoring can or should be used.”

Petri, Brun, and Garg had no relevant disclosures. Wallace disclosed financial relationships with Amgen, Alexion, BioCryst, Boehringer Ingelheim, Bristol Myers Squibb, Medpace, Novartis, Sanofi, Viela Bio, Visterra, Xencor, and Zenas. Balevic disclosed relationships with the National Institutes of Health, the Childhood Arthritis and Rheumatology Research Alliance, and UCB.
 

A version of this article appeared on Medscape.com.