Dermatology

For some patients with atopic dermatitis, disease activity may increase into mid-adulthood, and this subtype of AD may be linked with poorer physical and mental health, giving reason to observe patients beyond the pediatric stage, according to a cohort study of more than 30,000 patients.

Early-life environmental factors, such as tobacco smoke exposure, were not reliable predictors of increasing AD into mid-adulthood, suggesting that a patient’s contemporaneous environment may impact disease course throughout life, reported lead author Katrina Abuabara, MD, associate professor of dermatology at the University of California, San Francisco, and colleagues.

“There is a lack of studies that prospectively examine the course of atopic eczema beyond adolescence/early adulthood, and a more comprehensive understanding of disease activity across the life span is needed,” the investigators wrote in JAMA Dermatology. “Data on long-term disease course may offer insight into mechanisms for disease onset and persistence, are important when counseling patients, and would establish baseline trajectories for future studies of whether new treatments can modify disease course and development of comorbidities.”

The present study included 30,905 patients from two population-based birth cohorts: the 1958 National Childhood Development Study (NCDS) and the 1970 British Cohort Study (BCS70). Follow-up data were collected between 1958 and 2016 via nine waves of standardized questionnaires, and subtypes of atopic eczema patterns were identified “based on parent-reported or self-reported atopic eczema period prevalence.”

This measure “was previously shown to coincide with standardized clinical examinations among children in the NCDS, and a similar questionnaire demonstrated high sensitivity and specificity for physician-diagnosed atopic eczema in U.S. populations,” the investigators noted.

Latent class analysis identified four disease subtypes based on probability of reporting prevalent AD into midlife: low (88%-91%), decreasing (4%), increasing (2%-6%), and persistently high (2%-3%) probability.

Next, the investigators looked for associations between these subtypes and established early-life risk factors, such as history of breastfeeding and childhood smoke exposure. None of the childhood environmental factors differentiated between high versus decreasing disease in adulthood, or increasing versus decreasing disease in adulthood. In contrast, female sex predicted the high versus decreasing adult subtype (odds ratio, 1.99; 95% confidence interval, 1.66-2.38), and the increasing versus decreasing adult subtype (OR, 1.99; 95% CI, 1.69-2.35).

These findings suggest that “disease trajectory is modifiable and may be influenced by environmental factors throughout life,” the investigators wrote.

Further analysis uncovered associations between adult AD subtypes and other health outcomes. For example, compared with adults in the low probability group, those in the high probability group were significantly more likely to report rhinitis (OR, 2.70; 95% CI, 2.24-3.26) and asthma (OR, 3.45; 95% CI, 2.82-4.21). Adults with the increasing subtype also had elevated rates of asthma and rhinitis, along with worse self-reported mental health at age 42 (OR, 1.45; 95% CI, 1.23-1.72) and poor general health at age 46/50 (OR, 1.29; 95% CI, 1.09-1.53).

“When extending the window of observation beyond childhood, clear subtypes of atopic eczema based on patterns of disease activity emerged,” the investigators concluded. “In particular, a newly identified subtype with increasing probability of activity in adulthood warrants additional attention given associations with poor self-reported physical and mental health in midlife.”

Commenting on these results, Robert Sidbury, MD, professor of dermatology at the University of Washington, Seattle, said that this is an “important study” because it adds to our understanding of natural disease course over time.

This knowledge, as a pediatric dermatologist, will help Dr. Sidbury answer one of the most common questions he hears from parents: When is it going to stop?

“Trying to put a little bit more evidence-based heft behind the answer ... is really important,” he said in an interview.

Based on available data, up to 10% of children with AD may have disease activity into adulthood, according to Dr. Sidbury, who is also chief of dermatology at Seattle Children’s Hospital.

“I would hazard to guess that most of those adults who have atopic dermatitis – at least the ones who had it in childhood – were told that they would grow out of it,” he said. “And so I think awareness is important – that [resolution with age] does not always happen.”

The findings also support the possibility that AD is a systemic disease, and that underlying immune dysregulation may be linked with serious health consequences later in life, Dr. Sidbury said, noting that “the stakes get higher and higher when you start speculating in that way.”

According to Dr. Sidbury, the reported link between childhood AD and poor midlife health raises questions about how modifiable the disease course may be, particularly in response to earlier intervention with emerging AD medications, which “seem to be much more effective and potent.”

“Will the advent of these medications and their adoption and use in treatment perhaps have a significant impact, not just on the prevention of atopic dermatitis itself, but maybe other comorbidities?” he asked.

For the time being, this question remains unanswered.

The study was funded by the National Institute of Arthritis and Musculoskeletal and Skin Diseases and the Wellcome Trust. Dr. Abuabara received grants from the National Institutes of Health during the study, as well as personal fees from Target RWE and Pfizer outside of this study. One author reported receiving NIH grants during the study, another reported receiving grants from the Wellcome Trust and the Innovative Medicine Initiative Horizon 2020 (BIOMAP project) during the study; there were no other disclosures. Dr. Sidbury disclosed relationships with Galderma, Regeneron, and Pfizer.
 

For some patients with atopic dermatitis, disease activity may increase into mid-adulthood, and this subtype of AD may be linked with poorer physical and mental health, giving reason to observe patients beyond the pediatric stage, according to a cohort study of more than 30,000 patients.

Early-life environmental factors, such as tobacco smoke exposure, were not reliable predictors of increasing AD into mid-adulthood, suggesting that a patient’s contemporaneous environment may impact disease course throughout life, reported lead author Katrina Abuabara, MD, associate professor of dermatology at the University of California, San Francisco, and colleagues.

“There is a lack of studies that prospectively examine the course of atopic eczema beyond adolescence/early adulthood, and a more comprehensive understanding of disease activity across the life span is needed,” the investigators wrote in JAMA Dermatology. “Data on long-term disease course may offer insight into mechanisms for disease onset and persistence, are important when counseling patients, and would establish baseline trajectories for future studies of whether new treatments can modify disease course and development of comorbidities.”

The present study included 30,905 patients from two population-based birth cohorts: the 1958 National Childhood Development Study (NCDS) and the 1970 British Cohort Study (BCS70). Follow-up data were collected between 1958 and 2016 via nine waves of standardized questionnaires, and subtypes of atopic eczema patterns were identified “based on parent-reported or self-reported atopic eczema period prevalence.”

This measure “was previously shown to coincide with standardized clinical examinations among children in the NCDS, and a similar questionnaire demonstrated high sensitivity and specificity for physician-diagnosed atopic eczema in U.S. populations,” the investigators noted.

Latent class analysis identified four disease subtypes based on probability of reporting prevalent AD into midlife: low (88%-91%), decreasing (4%), increasing (2%-6%), and persistently high (2%-3%) probability.

Next, the investigators looked for associations between these subtypes and established early-life risk factors, such as history of breastfeeding and childhood smoke exposure. None of the childhood environmental factors differentiated between high versus decreasing disease in adulthood, or increasing versus decreasing disease in adulthood. In contrast, female sex predicted the high versus decreasing adult subtype (odds ratio, 1.99; 95% confidence interval, 1.66-2.38), and the increasing versus decreasing adult subtype (OR, 1.99; 95% CI, 1.69-2.35).

These findings suggest that “disease trajectory is modifiable and may be influenced by environmental factors throughout life,” the investigators wrote.

Further analysis uncovered associations between adult AD subtypes and other health outcomes. For example, compared with adults in the low probability group, those in the high probability group were significantly more likely to report rhinitis (OR, 2.70; 95% CI, 2.24-3.26) and asthma (OR, 3.45; 95% CI, 2.82-4.21). Adults with the increasing subtype also had elevated rates of asthma and rhinitis, along with worse self-reported mental health at age 42 (OR, 1.45; 95% CI, 1.23-1.72) and poor general health at age 46/50 (OR, 1.29; 95% CI, 1.09-1.53).

“When extending the window of observation beyond childhood, clear subtypes of atopic eczema based on patterns of disease activity emerged,” the investigators concluded. “In particular, a newly identified subtype with increasing probability of activity in adulthood warrants additional attention given associations with poor self-reported physical and mental health in midlife.”

Commenting on these results, Robert Sidbury, MD, professor of dermatology at the University of Washington, Seattle, said that this is an “important study” because it adds to our understanding of natural disease course over time.

This knowledge, as a pediatric dermatologist, will help Dr. Sidbury answer one of the most common questions he hears from parents: When is it going to stop?

“Trying to put a little bit more evidence-based heft behind the answer ... is really important,” he said in an interview.

Based on available data, up to 10% of children with AD may have disease activity into adulthood, according to Dr. Sidbury, who is also chief of dermatology at Seattle Children’s Hospital.

“I would hazard to guess that most of those adults who have atopic dermatitis – at least the ones who had it in childhood – were told that they would grow out of it,” he said. “And so I think awareness is important – that [resolution with age] does not always happen.”

The findings also support the possibility that AD is a systemic disease, and that underlying immune dysregulation may be linked with serious health consequences later in life, Dr. Sidbury said, noting that “the stakes get higher and higher when you start speculating in that way.”

According to Dr. Sidbury, the reported link between childhood AD and poor midlife health raises questions about how modifiable the disease course may be, particularly in response to earlier intervention with emerging AD medications, which “seem to be much more effective and potent.”

“Will the advent of these medications and their adoption and use in treatment perhaps have a significant impact, not just on the prevention of atopic dermatitis itself, but maybe other comorbidities?” he asked.

For the time being, this question remains unanswered.

The study was funded by the National Institute of Arthritis and Musculoskeletal and Skin Diseases and the Wellcome Trust. Dr. Abuabara received grants from the National Institutes of Health during the study, as well as personal fees from Target RWE and Pfizer outside of this study. One author reported receiving NIH grants during the study, another reported receiving grants from the Wellcome Trust and the Innovative Medicine Initiative Horizon 2020 (BIOMAP project) during the study; there were no other disclosures. Dr. Sidbury disclosed relationships with Galderma, Regeneron, and Pfizer.
 

For some patients with atopic dermatitis, disease activity may increase into mid-adulthood, and this subtype of AD may be linked with poorer physical and mental health, giving reason to observe patients beyond the pediatric stage, according to a cohort study of more than 30,000 patients.

Early-life environmental factors, such as tobacco smoke exposure, were not reliable predictors of increasing AD into mid-adulthood, suggesting that a patient’s contemporaneous environment may impact disease course throughout life, reported lead author Katrina Abuabara, MD, associate professor of dermatology at the University of California, San Francisco, and colleagues.

“There is a lack of studies that prospectively examine the course of atopic eczema beyond adolescence/early adulthood, and a more comprehensive understanding of disease activity across the life span is needed,” the investigators wrote in JAMA Dermatology. “Data on long-term disease course may offer insight into mechanisms for disease onset and persistence, are important when counseling patients, and would establish baseline trajectories for future studies of whether new treatments can modify disease course and development of comorbidities.”

The present study included 30,905 patients from two population-based birth cohorts: the 1958 National Childhood Development Study (NCDS) and the 1970 British Cohort Study (BCS70). Follow-up data were collected between 1958 and 2016 via nine waves of standardized questionnaires, and subtypes of atopic eczema patterns were identified “based on parent-reported or self-reported atopic eczema period prevalence.”

This measure “was previously shown to coincide with standardized clinical examinations among children in the NCDS, and a similar questionnaire demonstrated high sensitivity and specificity for physician-diagnosed atopic eczema in U.S. populations,” the investigators noted.

Latent class analysis identified four disease subtypes based on probability of reporting prevalent AD into midlife: low (88%-91%), decreasing (4%), increasing (2%-6%), and persistently high (2%-3%) probability.

Next, the investigators looked for associations between these subtypes and established early-life risk factors, such as history of breastfeeding and childhood smoke exposure. None of the childhood environmental factors differentiated between high versus decreasing disease in adulthood, or increasing versus decreasing disease in adulthood. In contrast, female sex predicted the high versus decreasing adult subtype (odds ratio, 1.99; 95% confidence interval, 1.66-2.38), and the increasing versus decreasing adult subtype (OR, 1.99; 95% CI, 1.69-2.35).

These findings suggest that “disease trajectory is modifiable and may be influenced by environmental factors throughout life,” the investigators wrote.

Further analysis uncovered associations between adult AD subtypes and other health outcomes. For example, compared with adults in the low probability group, those in the high probability group were significantly more likely to report rhinitis (OR, 2.70; 95% CI, 2.24-3.26) and asthma (OR, 3.45; 95% CI, 2.82-4.21). Adults with the increasing subtype also had elevated rates of asthma and rhinitis, along with worse self-reported mental health at age 42 (OR, 1.45; 95% CI, 1.23-1.72) and poor general health at age 46/50 (OR, 1.29; 95% CI, 1.09-1.53).

“When extending the window of observation beyond childhood, clear subtypes of atopic eczema based on patterns of disease activity emerged,” the investigators concluded. “In particular, a newly identified subtype with increasing probability of activity in adulthood warrants additional attention given associations with poor self-reported physical and mental health in midlife.”

Commenting on these results, Robert Sidbury, MD, professor of dermatology at the University of Washington, Seattle, said that this is an “important study” because it adds to our understanding of natural disease course over time.

This knowledge, as a pediatric dermatologist, will help Dr. Sidbury answer one of the most common questions he hears from parents: When is it going to stop?

“Trying to put a little bit more evidence-based heft behind the answer ... is really important,” he said in an interview.

Based on available data, up to 10% of children with AD may have disease activity into adulthood, according to Dr. Sidbury, who is also chief of dermatology at Seattle Children’s Hospital.

“I would hazard to guess that most of those adults who have atopic dermatitis – at least the ones who had it in childhood – were told that they would grow out of it,” he said. “And so I think awareness is important – that [resolution with age] does not always happen.”

The findings also support the possibility that AD is a systemic disease, and that underlying immune dysregulation may be linked with serious health consequences later in life, Dr. Sidbury said, noting that “the stakes get higher and higher when you start speculating in that way.”

According to Dr. Sidbury, the reported link between childhood AD and poor midlife health raises questions about how modifiable the disease course may be, particularly in response to earlier intervention with emerging AD medications, which “seem to be much more effective and potent.”

“Will the advent of these medications and their adoption and use in treatment perhaps have a significant impact, not just on the prevention of atopic dermatitis itself, but maybe other comorbidities?” he asked.

For the time being, this question remains unanswered.

The study was funded by the National Institute of Arthritis and Musculoskeletal and Skin Diseases and the Wellcome Trust. Dr. Abuabara received grants from the National Institutes of Health during the study, as well as personal fees from Target RWE and Pfizer outside of this study. One author reported receiving NIH grants during the study, another reported receiving grants from the Wellcome Trust and the Innovative Medicine Initiative Horizon 2020 (BIOMAP project) during the study; there were no other disclosures. Dr. Sidbury disclosed relationships with Galderma, Regeneron, and Pfizer.
 

ANSWER

The correct answer is that new hairs growing in to replace those lost from alopecia areata tend to be white (choice “b”). They usually regain their normal color, eventually.

DISCUSSION

Alopecia areata is an autoimmune phenomenon implying an increased tendency to develop other autoimmune diseases (eg, vitiligo [choice “a”], which can appear initially in the scalp).

This case turned out to be simple but had the potential to be far more serious. The biopsy of the dark patch showed benign seborrheic keratosis, but it was possible that another section could have demonstrated features of melanoma (choice “c”). When present, melanoma can occasionally trigger an immune response that destroys pigment cells in hair follicles, causing the hairs to lose their pigment. This is why the entire dark patch was later excised. Fortunately, the pathology report ruled out melanoma.

While it has been reported that stress can cause hair to turn gray (choice “d”), there were better (and more accurate) explanations for this patient’s presentation.

This case, though fairly straightforward, serves as a reminder that it is our job as clinicians to connect the dots to rule out worst-case scenarios.

Outcome

This patient’s hair all grew back, regaining its normal color, without any treatment.

ANSWER

The correct answer is that new hairs growing in to replace those lost from alopecia areata tend to be white (choice “b”). They usually regain their normal color, eventually.

DISCUSSION

Alopecia areata is an autoimmune phenomenon implying an increased tendency to develop other autoimmune diseases (eg, vitiligo [choice “a”], which can appear initially in the scalp).

This case turned out to be simple but had the potential to be far more serious. The biopsy of the dark patch showed benign seborrheic keratosis, but it was possible that another section could have demonstrated features of melanoma (choice “c”). When present, melanoma can occasionally trigger an immune response that destroys pigment cells in hair follicles, causing the hairs to lose their pigment. This is why the entire dark patch was later excised. Fortunately, the pathology report ruled out melanoma.

While it has been reported that stress can cause hair to turn gray (choice “d”), there were better (and more accurate) explanations for this patient’s presentation.

This case, though fairly straightforward, serves as a reminder that it is our job as clinicians to connect the dots to rule out worst-case scenarios.

Outcome

This patient’s hair all grew back, regaining its normal color, without any treatment.

ANSWER

The correct answer is that new hairs growing in to replace those lost from alopecia areata tend to be white (choice “b”). They usually regain their normal color, eventually.

DISCUSSION

Alopecia areata is an autoimmune phenomenon implying an increased tendency to develop other autoimmune diseases (eg, vitiligo [choice “a”], which can appear initially in the scalp).

This case turned out to be simple but had the potential to be far more serious. The biopsy of the dark patch showed benign seborrheic keratosis, but it was possible that another section could have demonstrated features of melanoma (choice “c”). When present, melanoma can occasionally trigger an immune response that destroys pigment cells in hair follicles, causing the hairs to lose their pigment. This is why the entire dark patch was later excised. Fortunately, the pathology report ruled out melanoma.

While it has been reported that stress can cause hair to turn gray (choice “d”), there were better (and more accurate) explanations for this patient’s presentation.

This case, though fairly straightforward, serves as a reminder that it is our job as clinicians to connect the dots to rule out worst-case scenarios.

Outcome

This patient’s hair all grew back, regaining its normal color, without any treatment.

Consumer advocacy group Public Citizen filed a lawsuit on Sept. 8 on behalf of the Post-Finasteride Syndrome Foundation (PFSF) against the Food and Drug Administration for the agency’s failure to act on a petition submitted by the foundation 4 years ago.

The September 2017 petition requested that the FDA take the popular hair-loss drug (1 mg finasteride, Propecia) off the market because of evidence of serious risk of patient injury, including depression and suicidal ideation. 

As an alternative, PFSF requested that the FDA require the drug’s manufacturers revise the safety information on the labeling and add boxed warnings to disclose the potential for side effects, another of which is erectile dysfunction.

Public Citizen points to a recent analysis of the VigiBase global database, which tracks adverse effects from global pharmacovigilance agencies, lists 356 reports of suicidality and 2,926 reports of psychological adverse events in finasteride users. Yet, 4 years after submitting the petition, the FDA has neither granted nor denied it.

The lawsuit claims that FDA has acted unlawfully in failing to act on PFSF’s petition, and further cites “88 cases of completed suicide associated with finasteride use” per data from the VigiBase database.

“On the same day that PFSF submitted the petition, FDA’s docket management division acknowledged receipt and assigned the petition a docket number,” Michael Kirkpatrick, the Public Citizen attorney serving as lead counsel for PFSF, told this news organization.

Yet, to date, “there has been no substantive response to the petition. The lawsuit filed today seeks to force FDA to issue a decision on PFSF’s petition,” Mr. Kirkpatrick said.

“The FDA needs to act in a timely way to protect the public from the risks associated with use of Propecia. The FDA’s failure to act exposes consumers to potentially life-threatening harm,” he added in a statement.

The complaint filed today by Public Citizen in the U.S. District Court for the District of Columbia is available online. 

This news organization reached out to the FDA for comment but did not receive a response by press time.
 

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

Consumer advocacy group Public Citizen filed a lawsuit on Sept. 8 on behalf of the Post-Finasteride Syndrome Foundation (PFSF) against the Food and Drug Administration for the agency’s failure to act on a petition submitted by the foundation 4 years ago.

The September 2017 petition requested that the FDA take the popular hair-loss drug (1 mg finasteride, Propecia) off the market because of evidence of serious risk of patient injury, including depression and suicidal ideation. 

As an alternative, PFSF requested that the FDA require the drug’s manufacturers revise the safety information on the labeling and add boxed warnings to disclose the potential for side effects, another of which is erectile dysfunction.

Public Citizen points to a recent analysis of the VigiBase global database, which tracks adverse effects from global pharmacovigilance agencies, lists 356 reports of suicidality and 2,926 reports of psychological adverse events in finasteride users. Yet, 4 years after submitting the petition, the FDA has neither granted nor denied it.

The lawsuit claims that FDA has acted unlawfully in failing to act on PFSF’s petition, and further cites “88 cases of completed suicide associated with finasteride use” per data from the VigiBase database.

“On the same day that PFSF submitted the petition, FDA’s docket management division acknowledged receipt and assigned the petition a docket number,” Michael Kirkpatrick, the Public Citizen attorney serving as lead counsel for PFSF, told this news organization.

Yet, to date, “there has been no substantive response to the petition. The lawsuit filed today seeks to force FDA to issue a decision on PFSF’s petition,” Mr. Kirkpatrick said.

“The FDA needs to act in a timely way to protect the public from the risks associated with use of Propecia. The FDA’s failure to act exposes consumers to potentially life-threatening harm,” he added in a statement.

The complaint filed today by Public Citizen in the U.S. District Court for the District of Columbia is available online. 

This news organization reached out to the FDA for comment but did not receive a response by press time.
 

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

Consumer advocacy group Public Citizen filed a lawsuit on Sept. 8 on behalf of the Post-Finasteride Syndrome Foundation (PFSF) against the Food and Drug Administration for the agency’s failure to act on a petition submitted by the foundation 4 years ago.

The September 2017 petition requested that the FDA take the popular hair-loss drug (1 mg finasteride, Propecia) off the market because of evidence of serious risk of patient injury, including depression and suicidal ideation. 

As an alternative, PFSF requested that the FDA require the drug’s manufacturers revise the safety information on the labeling and add boxed warnings to disclose the potential for side effects, another of which is erectile dysfunction.

Public Citizen points to a recent analysis of the VigiBase global database, which tracks adverse effects from global pharmacovigilance agencies, lists 356 reports of suicidality and 2,926 reports of psychological adverse events in finasteride users. Yet, 4 years after submitting the petition, the FDA has neither granted nor denied it.

The lawsuit claims that FDA has acted unlawfully in failing to act on PFSF’s petition, and further cites “88 cases of completed suicide associated with finasteride use” per data from the VigiBase database.

“On the same day that PFSF submitted the petition, FDA’s docket management division acknowledged receipt and assigned the petition a docket number,” Michael Kirkpatrick, the Public Citizen attorney serving as lead counsel for PFSF, told this news organization.

Yet, to date, “there has been no substantive response to the petition. The lawsuit filed today seeks to force FDA to issue a decision on PFSF’s petition,” Mr. Kirkpatrick said.

“The FDA needs to act in a timely way to protect the public from the risks associated with use of Propecia. The FDA’s failure to act exposes consumers to potentially life-threatening harm,” he added in a statement.

The complaint filed today by Public Citizen in the U.S. District Court for the District of Columbia is available online. 

This news organization reached out to the FDA for comment but did not receive a response by press time.
 

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

This was a vigorous response to the 5-FU treatment and was actually within the range of expected outcomes for a patient with a heavy burden of AKs. The erythema and superficial skin flaking spared areas unaffected by pre-cancers.

AKs manifest as rough, pink to brown macules or papules on sun-damaged skin and represent a precancerous change in keratinocytes that can lead to invasive squamous cell carcinoma. For this reason, AKs are often treated when they are observed. When targeting an entire “field” of AKs, a gold standard therapy is topical 5-FU. Prescribing 5-FU is safe and effective, but requires patient education, therapy customization, and anticipatory guidance.

Compared with other field treatments (eg, photodynamic therapy, topical diclofenac, imiquimod), 5-FU is the most successful and cost effective; it is first-line therapy and has the longest track record.^1,2 5-FU represses DNA synthesis. It’s helpful to describe 5-FU to patients as “fake DNA” that targets precancerous cells that are dividing rapidly. But a word of caution: Patients should be advised, in advance, to avoid significant sun exposure while using 5-FU, as the drug will lose its targeted effect and cause more generalized skin damage.

Physicians can modulate the severity of the response to 5-FU by decreasing the frequency or length of therapy by using a weaker (and more expensive) once daily 0.5% long-acting formulation. Additionally, to improve comfort, low-potency topical steroids such as hydrocortisone ointment 0.5% to 2.5% can be applied after completion of therapy to speed up the healing process. These adjustments improve tolerance of therapy, but the precise effect on efficacy is unknown.

Because of the degree of redness and erythema that developed in this patient, treatment was stopped a week early. There was also concern about possible bacterial involvement in the heavy skin sloughing, so the patient was given topical mupirocin ointment to apply TID for 7 days. Her skin cleared after 3 weeks and all previous AKs were clinically eliminated.

‌

Text courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).

This was a vigorous response to the 5-FU treatment and was actually within the range of expected outcomes for a patient with a heavy burden of AKs. The erythema and superficial skin flaking spared areas unaffected by pre-cancers.

AKs manifest as rough, pink to brown macules or papules on sun-damaged skin and represent a precancerous change in keratinocytes that can lead to invasive squamous cell carcinoma. For this reason, AKs are often treated when they are observed. When targeting an entire “field” of AKs, a gold standard therapy is topical 5-FU. Prescribing 5-FU is safe and effective, but requires patient education, therapy customization, and anticipatory guidance.

Compared with other field treatments (eg, photodynamic therapy, topical diclofenac, imiquimod), 5-FU is the most successful and cost effective; it is first-line therapy and has the longest track record.^1,2 5-FU represses DNA synthesis. It’s helpful to describe 5-FU to patients as “fake DNA” that targets precancerous cells that are dividing rapidly. But a word of caution: Patients should be advised, in advance, to avoid significant sun exposure while using 5-FU, as the drug will lose its targeted effect and cause more generalized skin damage.

Physicians can modulate the severity of the response to 5-FU by decreasing the frequency or length of therapy by using a weaker (and more expensive) once daily 0.5% long-acting formulation. Additionally, to improve comfort, low-potency topical steroids such as hydrocortisone ointment 0.5% to 2.5% can be applied after completion of therapy to speed up the healing process. These adjustments improve tolerance of therapy, but the precise effect on efficacy is unknown.

Because of the degree of redness and erythema that developed in this patient, treatment was stopped a week early. There was also concern about possible bacterial involvement in the heavy skin sloughing, so the patient was given topical mupirocin ointment to apply TID for 7 days. Her skin cleared after 3 weeks and all previous AKs were clinically eliminated.

‌

Text courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).

This was a vigorous response to the 5-FU treatment and was actually within the range of expected outcomes for a patient with a heavy burden of AKs. The erythema and superficial skin flaking spared areas unaffected by pre-cancers.

AKs manifest as rough, pink to brown macules or papules on sun-damaged skin and represent a precancerous change in keratinocytes that can lead to invasive squamous cell carcinoma. For this reason, AKs are often treated when they are observed. When targeting an entire “field” of AKs, a gold standard therapy is topical 5-FU. Prescribing 5-FU is safe and effective, but requires patient education, therapy customization, and anticipatory guidance.

Compared with other field treatments (eg, photodynamic therapy, topical diclofenac, imiquimod), 5-FU is the most successful and cost effective; it is first-line therapy and has the longest track record.^1,2 5-FU represses DNA synthesis. It’s helpful to describe 5-FU to patients as “fake DNA” that targets precancerous cells that are dividing rapidly. But a word of caution: Patients should be advised, in advance, to avoid significant sun exposure while using 5-FU, as the drug will lose its targeted effect and cause more generalized skin damage.

Physicians can modulate the severity of the response to 5-FU by decreasing the frequency or length of therapy by using a weaker (and more expensive) once daily 0.5% long-acting formulation. Additionally, to improve comfort, low-potency topical steroids such as hydrocortisone ointment 0.5% to 2.5% can be applied after completion of therapy to speed up the healing process. These adjustments improve tolerance of therapy, but the precise effect on efficacy is unknown.

Because of the degree of redness and erythema that developed in this patient, treatment was stopped a week early. There was also concern about possible bacterial involvement in the heavy skin sloughing, so the patient was given topical mupirocin ointment to apply TID for 7 days. Her skin cleared after 3 weeks and all previous AKs were clinically eliminated.

‌

Text courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).

Children with severe atopic dermatitis (AD) are about twice as likely to develop depression and internalizing behavior as those without this condition, according to a newly published cohort study of more than 11,000 children between the ages of 3 and 18 years.

Along with previous studies that have also linked AD to depression and other mental health issues in children, these data highlight the need for “clinical awareness of the psychosocial needs of children and adolescents with AD,” reported a multicenter team of investigators from the University of California, San Francisco, the University of Pennsylvania, and the London School of Hygiene and Tropical Medicine.

Unlike some previous studies, in this study, published online in JAMA Dermatology on Sept. 1, children were evaluated longitudinally, rather than at a single point in time, with a mean follow-up of 10 years. For those with active AD, compared with children without AD, the odds ratio for depression overall in any child with AD relative to those without AD was not significant after adjustment for variables such socioeconomic factors.

However, among children with severe AD, the risk was more than twofold greater even after adjustment (adjusted OR, 2.38; 95% confidence interval, 1.21- 4.72), reported the investigators, led by senior author Katrina Abuabara, MD, associate professor of dermatology and epidemiology at UCSF.
 

Internalizing symptoms seen with mild to severe AD

Internalizing behavior, which is closely linked to depression and describes a spectrum of inward-focusing activities, such as social withdrawal, was significantly more common in children with any degree of AD relative to those without AD: After adjustment, the risk climbed from a 29% increased risk in those with mild AD (aOR, 1.29; 95% CI, 1.06-1.57) to a more than 80% increased risk in children with moderate AD (aOR, 1.84; 95% CI, 1.40-2.41) and in children with severe AD (aOR, 1.90; 95% CI, 1.14-3.16).

In the study, depression was measured with the Short Moods and Feelings Questionnaire (SMFQ). Parental response to the Emotional Symptoms subscale of the Strength and Difficulties Questionnaire (SDQ) was used to measure internalizing behaviors.

The data were drawn from the Avon Longitudinal Study for Parents and Children (ALSPAC), a cohort that enrolled pregnant women in a defined area in southwest England and then followed children born from these pregnancies. Of the 14,062 children enrolled in ALSPAC, data from 11,181 children were available for this study.

In a previous meta-analysis of studies that have documented a link between AD and adverse effects on mood and mental health, an impact was identified in both children and adults. In children, AD was associated with a 27% increase in risk of depression (OR, 1.27; 95% CI, 1.12 -1.45). In adults, the risk was more than doubled (OR, 2.19; 95% CI, 1.87-2.57). The same meta-analysis found that the risk of suicidal ideation among adolescents and adults with AD was increased more than fourfold (OR, 4.32; 95% CI, 1.93-9.66).

In the ALSPAC data, the investigators were unable to find compelling evidence that sleep disturbances or concomitant asthma contributed to the increased risk of depression, which is a mechanism proposed by past investigators.

In an interview, Dr. Abuabara said that these and other data provide the basis for encouraging clinical awareness of the psychological needs of children with AD, but she suggested there is a gap in understanding what this means clinically. “We need more data on how dermatologists can effectively screen and manage these patients before we try to set expectations for clinical practice,” she said.

In addition, these data along with previously published studies suggest that change in mental health outcomes should be included in the evaluation of new therapies, according to Dr. Abuabara. She noted that there are several tools for evaluating mental health in children that might be appropriate, each with their own advantages and disadvantages.

“Ideally, recommendations would be issued through a group consensus process with patients, clinicians, researchers, and industry representatives working together as has been done for other outcomes through the Harmonizing Measures for Eczema (HOME) group,” Dr. Abuabara said.

 

Mental health assessments recommended

Others who have looked at the relationship between AD and depression have also recommended adding mental health outcomes to an assessment of efficacy for AD therapies.

Jonathan I. Silverberg, MD, PhD, MPH, associate professor of dermatology, George Washington University, Washington, is one such investigator. He is already monitoring depression systematically with the Hospital Anxiety and Depression Scale (HADS).

“HADS has been validated in AD and provides very important information about the emotional burden of AD,” explained Dr. Silverberg, whose most recent article on this topic appeared earlier this year. In that study, the relationship between AD and depression was found to be more pronounced in White children from families with lower incomes.

“Just a few hours ago, one of my patients thanked me for asking about their mental health and recognizing the holistic effects of AD,” Dr. Silverberg said.

The recent study based on ALSPAC data add to the evidence that AD, particularly severe AD, produces deleterious effects on mental health in children, and Dr. Silverberg believes clinicians should be acting on this evidence.

“I strongly encourage clinicians to routinely assess mental health. It will elevate the quality of care they provide, and their patients will appreciate them more for it,” he said.

Dr. Abuabara and another author report receiving research funding from Pfizer to their universities for unrelated work; there were no other disclosures. Dr. Silverberg reports financial relationships with more than 15 pharmaceutical companies.

Commentary by Lawrence F. Eichenfield, MD

More severe atopic dermatitis (AD) carries with it significant mental health concerns in children, as well as adults. Multiple studies have shown significantly higher rates of depression, anxiety, and “internalizing behaviors” (discussed as social withdrawal and other inward-focused activities) as well as attention-deficit/hyperactivity disorder. The study by Dr. Abuabara and colleagues is important as it followed children over time (an average of 10 years) and adjusted the data for socioeconomic factors, showing a rate of depression in children with severe AD twice that of those without. It appears that we are in the midst of a mental health crisis in children and teens, with markedly higher rates of pediatric and adolescent depression and anxiety, certainly influenced by COVID-19 societal changes. As the literature has developed on depression and AD, we have appreciated the importance of addressing this as part of our assessment of the disease effect on the individual and family, and it is one factor we consider in selections of systemic vs. topical therapies.  

Dr. Eichenfield is chief of pediatric and adolescent dermatology at Rady Children's Hospital-San Diego. He is vice chair of the department of dermatology and professor of dermatology and pediatrics at the University of California, San Diego. He disclosed that he has served as an investigator and/or consultant to AbbVie, Lilly, Pfizer, Regeneron, Sanofi-Genzyme, and Verrica.

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

This article was updated 6/18/22.

Children with severe atopic dermatitis (AD) are about twice as likely to develop depression and internalizing behavior as those without this condition, according to a newly published cohort study of more than 11,000 children between the ages of 3 and 18 years.

Along with previous studies that have also linked AD to depression and other mental health issues in children, these data highlight the need for “clinical awareness of the psychosocial needs of children and adolescents with AD,” reported a multicenter team of investigators from the University of California, San Francisco, the University of Pennsylvania, and the London School of Hygiene and Tropical Medicine.

Unlike some previous studies, in this study, published online in JAMA Dermatology on Sept. 1, children were evaluated longitudinally, rather than at a single point in time, with a mean follow-up of 10 years. For those with active AD, compared with children without AD, the odds ratio for depression overall in any child with AD relative to those without AD was not significant after adjustment for variables such socioeconomic factors.

However, among children with severe AD, the risk was more than twofold greater even after adjustment (adjusted OR, 2.38; 95% confidence interval, 1.21- 4.72), reported the investigators, led by senior author Katrina Abuabara, MD, associate professor of dermatology and epidemiology at UCSF.
 

Internalizing symptoms seen with mild to severe AD

Internalizing behavior, which is closely linked to depression and describes a spectrum of inward-focusing activities, such as social withdrawal, was significantly more common in children with any degree of AD relative to those without AD: After adjustment, the risk climbed from a 29% increased risk in those with mild AD (aOR, 1.29; 95% CI, 1.06-1.57) to a more than 80% increased risk in children with moderate AD (aOR, 1.84; 95% CI, 1.40-2.41) and in children with severe AD (aOR, 1.90; 95% CI, 1.14-3.16).

In the study, depression was measured with the Short Moods and Feelings Questionnaire (SMFQ). Parental response to the Emotional Symptoms subscale of the Strength and Difficulties Questionnaire (SDQ) was used to measure internalizing behaviors.

The data were drawn from the Avon Longitudinal Study for Parents and Children (ALSPAC), a cohort that enrolled pregnant women in a defined area in southwest England and then followed children born from these pregnancies. Of the 14,062 children enrolled in ALSPAC, data from 11,181 children were available for this study.

In a previous meta-analysis of studies that have documented a link between AD and adverse effects on mood and mental health, an impact was identified in both children and adults. In children, AD was associated with a 27% increase in risk of depression (OR, 1.27; 95% CI, 1.12 -1.45). In adults, the risk was more than doubled (OR, 2.19; 95% CI, 1.87-2.57). The same meta-analysis found that the risk of suicidal ideation among adolescents and adults with AD was increased more than fourfold (OR, 4.32; 95% CI, 1.93-9.66).

In the ALSPAC data, the investigators were unable to find compelling evidence that sleep disturbances or concomitant asthma contributed to the increased risk of depression, which is a mechanism proposed by past investigators.

In an interview, Dr. Abuabara said that these and other data provide the basis for encouraging clinical awareness of the psychological needs of children with AD, but she suggested there is a gap in understanding what this means clinically. “We need more data on how dermatologists can effectively screen and manage these patients before we try to set expectations for clinical practice,” she said.

In addition, these data along with previously published studies suggest that change in mental health outcomes should be included in the evaluation of new therapies, according to Dr. Abuabara. She noted that there are several tools for evaluating mental health in children that might be appropriate, each with their own advantages and disadvantages.

“Ideally, recommendations would be issued through a group consensus process with patients, clinicians, researchers, and industry representatives working together as has been done for other outcomes through the Harmonizing Measures for Eczema (HOME) group,” Dr. Abuabara said.

 

Mental health assessments recommended

Others who have looked at the relationship between AD and depression have also recommended adding mental health outcomes to an assessment of efficacy for AD therapies.

Jonathan I. Silverberg, MD, PhD, MPH, associate professor of dermatology, George Washington University, Washington, is one such investigator. He is already monitoring depression systematically with the Hospital Anxiety and Depression Scale (HADS).

“HADS has been validated in AD and provides very important information about the emotional burden of AD,” explained Dr. Silverberg, whose most recent article on this topic appeared earlier this year. In that study, the relationship between AD and depression was found to be more pronounced in White children from families with lower incomes.

“Just a few hours ago, one of my patients thanked me for asking about their mental health and recognizing the holistic effects of AD,” Dr. Silverberg said.

The recent study based on ALSPAC data add to the evidence that AD, particularly severe AD, produces deleterious effects on mental health in children, and Dr. Silverberg believes clinicians should be acting on this evidence.

“I strongly encourage clinicians to routinely assess mental health. It will elevate the quality of care they provide, and their patients will appreciate them more for it,” he said.

Dr. Abuabara and another author report receiving research funding from Pfizer to their universities for unrelated work; there were no other disclosures. Dr. Silverberg reports financial relationships with more than 15 pharmaceutical companies.

Commentary by Lawrence F. Eichenfield, MD

More severe atopic dermatitis (AD) carries with it significant mental health concerns in children, as well as adults. Multiple studies have shown significantly higher rates of depression, anxiety, and “internalizing behaviors” (discussed as social withdrawal and other inward-focused activities) as well as attention-deficit/hyperactivity disorder. The study by Dr. Abuabara and colleagues is important as it followed children over time (an average of 10 years) and adjusted the data for socioeconomic factors, showing a rate of depression in children with severe AD twice that of those without. It appears that we are in the midst of a mental health crisis in children and teens, with markedly higher rates of pediatric and adolescent depression and anxiety, certainly influenced by COVID-19 societal changes. As the literature has developed on depression and AD, we have appreciated the importance of addressing this as part of our assessment of the disease effect on the individual and family, and it is one factor we consider in selections of systemic vs. topical therapies.  

Dr. Eichenfield is chief of pediatric and adolescent dermatology at Rady Children's Hospital-San Diego. He is vice chair of the department of dermatology and professor of dermatology and pediatrics at the University of California, San Diego. He disclosed that he has served as an investigator and/or consultant to AbbVie, Lilly, Pfizer, Regeneron, Sanofi-Genzyme, and Verrica.

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

This article was updated 6/18/22.

Children with severe atopic dermatitis (AD) are about twice as likely to develop depression and internalizing behavior as those without this condition, according to a newly published cohort study of more than 11,000 children between the ages of 3 and 18 years.

Along with previous studies that have also linked AD to depression and other mental health issues in children, these data highlight the need for “clinical awareness of the psychosocial needs of children and adolescents with AD,” reported a multicenter team of investigators from the University of California, San Francisco, the University of Pennsylvania, and the London School of Hygiene and Tropical Medicine.

Unlike some previous studies, in this study, published online in JAMA Dermatology on Sept. 1, children were evaluated longitudinally, rather than at a single point in time, with a mean follow-up of 10 years. For those with active AD, compared with children without AD, the odds ratio for depression overall in any child with AD relative to those without AD was not significant after adjustment for variables such socioeconomic factors.

However, among children with severe AD, the risk was more than twofold greater even after adjustment (adjusted OR, 2.38; 95% confidence interval, 1.21- 4.72), reported the investigators, led by senior author Katrina Abuabara, MD, associate professor of dermatology and epidemiology at UCSF.
 

Internalizing symptoms seen with mild to severe AD

Internalizing behavior, which is closely linked to depression and describes a spectrum of inward-focusing activities, such as social withdrawal, was significantly more common in children with any degree of AD relative to those without AD: After adjustment, the risk climbed from a 29% increased risk in those with mild AD (aOR, 1.29; 95% CI, 1.06-1.57) to a more than 80% increased risk in children with moderate AD (aOR, 1.84; 95% CI, 1.40-2.41) and in children with severe AD (aOR, 1.90; 95% CI, 1.14-3.16).

In the study, depression was measured with the Short Moods and Feelings Questionnaire (SMFQ). Parental response to the Emotional Symptoms subscale of the Strength and Difficulties Questionnaire (SDQ) was used to measure internalizing behaviors.

The data were drawn from the Avon Longitudinal Study for Parents and Children (ALSPAC), a cohort that enrolled pregnant women in a defined area in southwest England and then followed children born from these pregnancies. Of the 14,062 children enrolled in ALSPAC, data from 11,181 children were available for this study.

In a previous meta-analysis of studies that have documented a link between AD and adverse effects on mood and mental health, an impact was identified in both children and adults. In children, AD was associated with a 27% increase in risk of depression (OR, 1.27; 95% CI, 1.12 -1.45). In adults, the risk was more than doubled (OR, 2.19; 95% CI, 1.87-2.57). The same meta-analysis found that the risk of suicidal ideation among adolescents and adults with AD was increased more than fourfold (OR, 4.32; 95% CI, 1.93-9.66).

In the ALSPAC data, the investigators were unable to find compelling evidence that sleep disturbances or concomitant asthma contributed to the increased risk of depression, which is a mechanism proposed by past investigators.

In an interview, Dr. Abuabara said that these and other data provide the basis for encouraging clinical awareness of the psychological needs of children with AD, but she suggested there is a gap in understanding what this means clinically. “We need more data on how dermatologists can effectively screen and manage these patients before we try to set expectations for clinical practice,” she said.

In addition, these data along with previously published studies suggest that change in mental health outcomes should be included in the evaluation of new therapies, according to Dr. Abuabara. She noted that there are several tools for evaluating mental health in children that might be appropriate, each with their own advantages and disadvantages.

“Ideally, recommendations would be issued through a group consensus process with patients, clinicians, researchers, and industry representatives working together as has been done for other outcomes through the Harmonizing Measures for Eczema (HOME) group,” Dr. Abuabara said.

 

Mental health assessments recommended

Others who have looked at the relationship between AD and depression have also recommended adding mental health outcomes to an assessment of efficacy for AD therapies.

Jonathan I. Silverberg, MD, PhD, MPH, associate professor of dermatology, George Washington University, Washington, is one such investigator. He is already monitoring depression systematically with the Hospital Anxiety and Depression Scale (HADS).

“HADS has been validated in AD and provides very important information about the emotional burden of AD,” explained Dr. Silverberg, whose most recent article on this topic appeared earlier this year. In that study, the relationship between AD and depression was found to be more pronounced in White children from families with lower incomes.

“Just a few hours ago, one of my patients thanked me for asking about their mental health and recognizing the holistic effects of AD,” Dr. Silverberg said.

The recent study based on ALSPAC data add to the evidence that AD, particularly severe AD, produces deleterious effects on mental health in children, and Dr. Silverberg believes clinicians should be acting on this evidence.

“I strongly encourage clinicians to routinely assess mental health. It will elevate the quality of care they provide, and their patients will appreciate them more for it,” he said.

Dr. Abuabara and another author report receiving research funding from Pfizer to their universities for unrelated work; there were no other disclosures. Dr. Silverberg reports financial relationships with more than 15 pharmaceutical companies.

Commentary by Lawrence F. Eichenfield, MD

More severe atopic dermatitis (AD) carries with it significant mental health concerns in children, as well as adults. Multiple studies have shown significantly higher rates of depression, anxiety, and “internalizing behaviors” (discussed as social withdrawal and other inward-focused activities) as well as attention-deficit/hyperactivity disorder. The study by Dr. Abuabara and colleagues is important as it followed children over time (an average of 10 years) and adjusted the data for socioeconomic factors, showing a rate of depression in children with severe AD twice that of those without. It appears that we are in the midst of a mental health crisis in children and teens, with markedly higher rates of pediatric and adolescent depression and anxiety, certainly influenced by COVID-19 societal changes. As the literature has developed on depression and AD, we have appreciated the importance of addressing this as part of our assessment of the disease effect on the individual and family, and it is one factor we consider in selections of systemic vs. topical therapies.  

Dr. Eichenfield is chief of pediatric and adolescent dermatology at Rady Children's Hospital-San Diego. He is vice chair of the department of dermatology and professor of dermatology and pediatrics at the University of California, San Diego. He disclosed that he has served as an investigator and/or consultant to AbbVie, Lilly, Pfizer, Regeneron, Sanofi-Genzyme, and Verrica.

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

This article was updated 6/18/22.

With more than 300 genetic skin disorders involving more than 1,000 genes and hundreds of genetic tests available on the market, it can be daunting for health care providers and families of pediatric patients to navigate the landscape.

“Testing options range from targeted variant testing and single-gene testing to exome and genome sequencing,” Gabriele Richard, MD, said at the annual meeting of the Society for Pediatric Dermatology. “It is not always easy to determine which testing is right.”

Increasingly, clinical genomic tests, including exome and genome sequencing, are used for patients with complex phenotypes, and possibly multiple disorders, who might have no diagnosis despite extensive prior testing, said Dr. Richard, medical director at Gaithersburg, Md.–based GeneDx., a molecular diagnostic laboratory that performs comprehensive testing for rare genetic disorders. These tests are also being used more for first-line testing in critically ill patients in the neonatal and pediatric intensive care units, and “have heralded a whole new era of gene and disease discovery,” she added.

Targeted variant testing is used for known familial variants, to test family members for carrier status and segregation, and to make a prenatal diagnosis, she said. Single-gene testing is available for most genes and has its place for conditions that can be clinically well-recognized, such as ichthyosis vulgaris, Darier disease, or Papillon-Lefèvre syndrome.

Specific tests for identifying gene deletions or duplications are exon-level microarrays, multiplex ligation-dependent probe amplification (MLPA), and chromosomal microarray analysis. “The latter has been successful in identifying diseases causing chromosomal abnormalities in over 10% of cases overall,” Dr. Richard said. An example of a skin disorder is X-linked ichthyosis caused by a deletion of the steroid sulfatase locus in more than 95% of affected males, she said.

“However, the current staple of molecular diagnostic testing is multigene next-generation sequencing (NGS) panels, which allow you to interrogate two to hundreds of genes concurrently, including sequencing and deletion duplication testing.” These tests are the most cost effective, she said, and are available for almost any genodermatosis or group of disorders with overlapping phenotypes, such as albinism or ichthyosis, epidermolysis bullosa and skin fragility, ectodermal dysplasia, or porphyria. According to Dr. Richard, the diagnostic outcomes of NGS panels mainly depend on test indication, panel size and gene curation, age of onset, and prevailing inheritance pattern of disorders.

Her recommended criteria for distinguishing the myriad of available NGS panels include checking gene content, technical sensitivity of sequencing and deletion/duplication analysis, quality of variant interpretation and reporting, turn-around time, and available familial follow-up testing. “If a family might consider future prenatal diagnosis, choose the lab that performs prenatal and diagnostic testing,” Dr. Richard said. “Equally important are client services such as ease of ordering, insurance coverage, and the ability to determine out-of-pocket cost to patients.”

Resources that enable consumers to compare panel content, methodology, turnaround time, and other parameters include the Genetic Testing Registry (GTR) operated by the National Center for Biotechnology Information, and Concert Genetics, a genetic testing company. The National Society of Genetic Counselors also offers a searchable database for finding a genetic counselor.

Exome sequencing includes the coding sequences of about 20,000 genes and has an average depth of 50 to about 150 reads. “It is a phenotype-driven test where only select variants are being reported fitting the phenotype,” Dr. Richard said. “The outcome of exome and genome sequencing much depends on optimization of bioinformatic pipelines and tools.” Besides small sequence variants, exome sequencing is able to identify a variety of different types of disease-causing variants, such as gene copy number variants seen in about 6% of positive cases, mosaicism, regions of homozygosity, uniparental disomy, and other unusual events and is cost effective.

Whole-genome sequencing, meanwhile, includes the entire genome, particularly noncoding regions, and has an average depth of more than 30 reads. “It’s based on single-molecule sequencing, has longer reads and more uniform coverage, compared to exome sequencing,” she said. “Higher cost, variant interpretation, and lack of coverage by payers are still presenting challenges for genome sequencing.” Genome sequencing can be done in a day or less.

According to diagnostic outcomes based on 280,000 individuals including 125,000 probands from GeneDx data, a definitive diagnosis was made in 26% of probands, of which 2.8% had more than one diagnostic finding and 1.8% had actionable secondary findings. In addition, 7% of the variants were found in candidate genes; 31% of probands had variants of uncertain significance, while 36% tested negative. “Nevertheless, the diagnostic yield of exome sequencing depends on the phenotype and cohort studied,” Dr. Richard continued.

At her company, she said, the highest positive rate is for multiple congenital anomalies (34%), skeletal system abnormalities (30%), and nervous system abnormalities (29%). Trio testing – the concurrent analysis of both biological parents and proband for all genes – “is a critical factor for success,” she added. “It not only improves the variant calling because we have three times the data and increases test sensitivity, it also provides more certain results, determines inheritance and allows for detection of parental mosaicism.”

According to Dr. Richard, trio testing has a one-third higher diagnostic rate than sequencing of the proband alone. Citing a published prospective study that compiled data from eight different exome- and genome-sequencing studies in critically ill neonates and children, trio testing made it possible to make a genetic diagnosis in up to 58% of children.

Whole-genome sequencing is estimated to have a 5%-10% higher diagnostic rate than exome sequencing. “However, we are still a ways away from using it as a routine diagnostic test for all test indications,” Dr. Richard said. “Automation, special bioinformatics algorithms and databases, and combination of genome sequencing with mRNA sequencing are being explored and built to further improve the diagnostic yield.”

Dr. Richard had no disclosures other than being an employee of GeneDx.

dbrunk@mdedge.com

With more than 300 genetic skin disorders involving more than 1,000 genes and hundreds of genetic tests available on the market, it can be daunting for health care providers and families of pediatric patients to navigate the landscape.

“Testing options range from targeted variant testing and single-gene testing to exome and genome sequencing,” Gabriele Richard, MD, said at the annual meeting of the Society for Pediatric Dermatology. “It is not always easy to determine which testing is right.”

Increasingly, clinical genomic tests, including exome and genome sequencing, are used for patients with complex phenotypes, and possibly multiple disorders, who might have no diagnosis despite extensive prior testing, said Dr. Richard, medical director at Gaithersburg, Md.–based GeneDx., a molecular diagnostic laboratory that performs comprehensive testing for rare genetic disorders. These tests are also being used more for first-line testing in critically ill patients in the neonatal and pediatric intensive care units, and “have heralded a whole new era of gene and disease discovery,” she added.

Targeted variant testing is used for known familial variants, to test family members for carrier status and segregation, and to make a prenatal diagnosis, she said. Single-gene testing is available for most genes and has its place for conditions that can be clinically well-recognized, such as ichthyosis vulgaris, Darier disease, or Papillon-Lefèvre syndrome.

Specific tests for identifying gene deletions or duplications are exon-level microarrays, multiplex ligation-dependent probe amplification (MLPA), and chromosomal microarray analysis. “The latter has been successful in identifying diseases causing chromosomal abnormalities in over 10% of cases overall,” Dr. Richard said. An example of a skin disorder is X-linked ichthyosis caused by a deletion of the steroid sulfatase locus in more than 95% of affected males, she said.

“However, the current staple of molecular diagnostic testing is multigene next-generation sequencing (NGS) panels, which allow you to interrogate two to hundreds of genes concurrently, including sequencing and deletion duplication testing.” These tests are the most cost effective, she said, and are available for almost any genodermatosis or group of disorders with overlapping phenotypes, such as albinism or ichthyosis, epidermolysis bullosa and skin fragility, ectodermal dysplasia, or porphyria. According to Dr. Richard, the diagnostic outcomes of NGS panels mainly depend on test indication, panel size and gene curation, age of onset, and prevailing inheritance pattern of disorders.

Her recommended criteria for distinguishing the myriad of available NGS panels include checking gene content, technical sensitivity of sequencing and deletion/duplication analysis, quality of variant interpretation and reporting, turn-around time, and available familial follow-up testing. “If a family might consider future prenatal diagnosis, choose the lab that performs prenatal and diagnostic testing,” Dr. Richard said. “Equally important are client services such as ease of ordering, insurance coverage, and the ability to determine out-of-pocket cost to patients.”

Resources that enable consumers to compare panel content, methodology, turnaround time, and other parameters include the Genetic Testing Registry (GTR) operated by the National Center for Biotechnology Information, and Concert Genetics, a genetic testing company. The National Society of Genetic Counselors also offers a searchable database for finding a genetic counselor.

Exome sequencing includes the coding sequences of about 20,000 genes and has an average depth of 50 to about 150 reads. “It is a phenotype-driven test where only select variants are being reported fitting the phenotype,” Dr. Richard said. “The outcome of exome and genome sequencing much depends on optimization of bioinformatic pipelines and tools.” Besides small sequence variants, exome sequencing is able to identify a variety of different types of disease-causing variants, such as gene copy number variants seen in about 6% of positive cases, mosaicism, regions of homozygosity, uniparental disomy, and other unusual events and is cost effective.

Whole-genome sequencing, meanwhile, includes the entire genome, particularly noncoding regions, and has an average depth of more than 30 reads. “It’s based on single-molecule sequencing, has longer reads and more uniform coverage, compared to exome sequencing,” she said. “Higher cost, variant interpretation, and lack of coverage by payers are still presenting challenges for genome sequencing.” Genome sequencing can be done in a day or less.

According to diagnostic outcomes based on 280,000 individuals including 125,000 probands from GeneDx data, a definitive diagnosis was made in 26% of probands, of which 2.8% had more than one diagnostic finding and 1.8% had actionable secondary findings. In addition, 7% of the variants were found in candidate genes; 31% of probands had variants of uncertain significance, while 36% tested negative. “Nevertheless, the diagnostic yield of exome sequencing depends on the phenotype and cohort studied,” Dr. Richard continued.

At her company, she said, the highest positive rate is for multiple congenital anomalies (34%), skeletal system abnormalities (30%), and nervous system abnormalities (29%). Trio testing – the concurrent analysis of both biological parents and proband for all genes – “is a critical factor for success,” she added. “It not only improves the variant calling because we have three times the data and increases test sensitivity, it also provides more certain results, determines inheritance and allows for detection of parental mosaicism.”

According to Dr. Richard, trio testing has a one-third higher diagnostic rate than sequencing of the proband alone. Citing a published prospective study that compiled data from eight different exome- and genome-sequencing studies in critically ill neonates and children, trio testing made it possible to make a genetic diagnosis in up to 58% of children.

Whole-genome sequencing is estimated to have a 5%-10% higher diagnostic rate than exome sequencing. “However, we are still a ways away from using it as a routine diagnostic test for all test indications,” Dr. Richard said. “Automation, special bioinformatics algorithms and databases, and combination of genome sequencing with mRNA sequencing are being explored and built to further improve the diagnostic yield.”

Dr. Richard had no disclosures other than being an employee of GeneDx.

dbrunk@mdedge.com

With more than 300 genetic skin disorders involving more than 1,000 genes and hundreds of genetic tests available on the market, it can be daunting for health care providers and families of pediatric patients to navigate the landscape.

“Testing options range from targeted variant testing and single-gene testing to exome and genome sequencing,” Gabriele Richard, MD, said at the annual meeting of the Society for Pediatric Dermatology. “It is not always easy to determine which testing is right.”

Increasingly, clinical genomic tests, including exome and genome sequencing, are used for patients with complex phenotypes, and possibly multiple disorders, who might have no diagnosis despite extensive prior testing, said Dr. Richard, medical director at Gaithersburg, Md.–based GeneDx., a molecular diagnostic laboratory that performs comprehensive testing for rare genetic disorders. These tests are also being used more for first-line testing in critically ill patients in the neonatal and pediatric intensive care units, and “have heralded a whole new era of gene and disease discovery,” she added.

Targeted variant testing is used for known familial variants, to test family members for carrier status and segregation, and to make a prenatal diagnosis, she said. Single-gene testing is available for most genes and has its place for conditions that can be clinically well-recognized, such as ichthyosis vulgaris, Darier disease, or Papillon-Lefèvre syndrome.

Specific tests for identifying gene deletions or duplications are exon-level microarrays, multiplex ligation-dependent probe amplification (MLPA), and chromosomal microarray analysis. “The latter has been successful in identifying diseases causing chromosomal abnormalities in over 10% of cases overall,” Dr. Richard said. An example of a skin disorder is X-linked ichthyosis caused by a deletion of the steroid sulfatase locus in more than 95% of affected males, she said.

“However, the current staple of molecular diagnostic testing is multigene next-generation sequencing (NGS) panels, which allow you to interrogate two to hundreds of genes concurrently, including sequencing and deletion duplication testing.” These tests are the most cost effective, she said, and are available for almost any genodermatosis or group of disorders with overlapping phenotypes, such as albinism or ichthyosis, epidermolysis bullosa and skin fragility, ectodermal dysplasia, or porphyria. According to Dr. Richard, the diagnostic outcomes of NGS panels mainly depend on test indication, panel size and gene curation, age of onset, and prevailing inheritance pattern of disorders.

Her recommended criteria for distinguishing the myriad of available NGS panels include checking gene content, technical sensitivity of sequencing and deletion/duplication analysis, quality of variant interpretation and reporting, turn-around time, and available familial follow-up testing. “If a family might consider future prenatal diagnosis, choose the lab that performs prenatal and diagnostic testing,” Dr. Richard said. “Equally important are client services such as ease of ordering, insurance coverage, and the ability to determine out-of-pocket cost to patients.”

Resources that enable consumers to compare panel content, methodology, turnaround time, and other parameters include the Genetic Testing Registry (GTR) operated by the National Center for Biotechnology Information, and Concert Genetics, a genetic testing company. The National Society of Genetic Counselors also offers a searchable database for finding a genetic counselor.

Exome sequencing includes the coding sequences of about 20,000 genes and has an average depth of 50 to about 150 reads. “It is a phenotype-driven test where only select variants are being reported fitting the phenotype,” Dr. Richard said. “The outcome of exome and genome sequencing much depends on optimization of bioinformatic pipelines and tools.” Besides small sequence variants, exome sequencing is able to identify a variety of different types of disease-causing variants, such as gene copy number variants seen in about 6% of positive cases, mosaicism, regions of homozygosity, uniparental disomy, and other unusual events and is cost effective.

Whole-genome sequencing, meanwhile, includes the entire genome, particularly noncoding regions, and has an average depth of more than 30 reads. “It’s based on single-molecule sequencing, has longer reads and more uniform coverage, compared to exome sequencing,” she said. “Higher cost, variant interpretation, and lack of coverage by payers are still presenting challenges for genome sequencing.” Genome sequencing can be done in a day or less.

According to diagnostic outcomes based on 280,000 individuals including 125,000 probands from GeneDx data, a definitive diagnosis was made in 26% of probands, of which 2.8% had more than one diagnostic finding and 1.8% had actionable secondary findings. In addition, 7% of the variants were found in candidate genes; 31% of probands had variants of uncertain significance, while 36% tested negative. “Nevertheless, the diagnostic yield of exome sequencing depends on the phenotype and cohort studied,” Dr. Richard continued.

At her company, she said, the highest positive rate is for multiple congenital anomalies (34%), skeletal system abnormalities (30%), and nervous system abnormalities (29%). Trio testing – the concurrent analysis of both biological parents and proband for all genes – “is a critical factor for success,” she added. “It not only improves the variant calling because we have three times the data and increases test sensitivity, it also provides more certain results, determines inheritance and allows for detection of parental mosaicism.”

According to Dr. Richard, trio testing has a one-third higher diagnostic rate than sequencing of the proband alone. Citing a published prospective study that compiled data from eight different exome- and genome-sequencing studies in critically ill neonates and children, trio testing made it possible to make a genetic diagnosis in up to 58% of children.

Whole-genome sequencing is estimated to have a 5%-10% higher diagnostic rate than exome sequencing. “However, we are still a ways away from using it as a routine diagnostic test for all test indications,” Dr. Richard said. “Automation, special bioinformatics algorithms and databases, and combination of genome sequencing with mRNA sequencing are being explored and built to further improve the diagnostic yield.”

Dr. Richard had no disclosures other than being an employee of GeneDx.

dbrunk@mdedge.com

When Denise M. Adams, MD, began her career as a pediatric oncologist 25 years ago, there were many interventions for vascular anomalies, but most were surgery based and medical options were limited.

“The medicines we had were believed to be antiangiogenic and they were used not only for tumors but for all sorts of malformations,” Dr. Adams, a pediatric hematologist-oncologist at Children’s Hospital of Philadelphia, recalled during the annual meeting of the Society for Pediatric Dermatology. “I didn’t understand how so many different phenotypes could respond to the same medicine. Not all of them did, but some did have some response.”

She also grew frustrated by the lack of clinical trials and collaborative research groups involving patients with vascular anomalies. “I called this the chicken soup of medical management,” she said. “As we got more involved in vascular anomalies, the power of one patient or that power of a few patients led us in a direction for improved medical management. Or knowledge was gained by one patient who failed all noted medical management and led us into a direction repurposing a drug that actually wound up working.”

Propranolol, for example, became a key medicine for the treatment of vascular anomalies when it was found to improve hemangiomas in children who were given the drug for other reasons. “From this observation a key prospective study was performed and this beta-blocker became FDA approved for the treatment of complicated hemangiomas,” said Dr. Adams, who directs the hospital’s Comprehensive Vascular Anomalies Program. “That was how a bedside observation let to bench intervention, and how presently we are investigating bench interventions related to the mechanism of propranolol therapy.”

Then there is the story of the mammalian target of rapamycin (mTOR) inhibitor sirolimus. In her previous role as medical director of the Hemangioma and Vascular Malformation Center at Cincinnati Children’s Hospital, Dr. Adams and colleagues cared for an infant who presented with a Kaposiform hemangioendothelioma (KHE). “At that time, she was given our standard of practice for the treatment, but our standard of practice was not good enough,” she said.

While other options were being discussed for this patient, “we had been doing some collaborative work with pathology and nephrology on the PIKC3A pathway, because we knew that germline mutations of TEK were involved in this pathway, and we knew that 50% of patients with PTEN mutations had vascular anomalies. So, we hypothesized that this pathway was involved in vascular anomalies.”

They also had earlier success using mTOR inhibition for tuberous sclerosis patients with angiomyolipomas and patients with neurofibromatosis. “We needed a medicine that could be given orally because we did not think this patient was going to do well, so we started her on sirolimus,” Dr. Adams said. “She had a great response. This was followed by a phase 2 study, which proved efficacy and led to discovery of biomarkers.” This is where the angiopoietin-2 story started, she said, noting that this biomarker is now used “to differentiate KLA [Kaposiform lymphangiomatosis] from KHE and KLAs and KHE from other disorders.”

This bedside work helped researchers to better understand the mechanism of action in other disorders, such as observing somatic mutations in PIK3CA in patients with CLOVES syndrome. “This meant that we could now correlate the phenotype to the genotype, and it opened up targeted therapy with developmental therapeutics that were already in use for oncology,” Dr. Adams said. “We know we had mTOR inhibition with sirolimus and everolimus. We now have an AKT inhibitor, a PIK3CA inhibitor, and we now have another side of the pathway which deals with RASopathies, and some other medicines that we can use.”

Miransertib, a potent PAN-AKT inhibitor initially used for breast cancer, is currently being evaluated in open-label, phase 1 and 2 trials in patients with PIK3CA-related overgrowth spectrum (PROS) and Proteus syndrome. The dose used in a pilot study is about one-sixth of the dose used for oncology patients, Dr. Adams said.

She and her colleagues used miransertib to treat a 3-year-old with CLOVES syndrome who had lipomatous infiltration of the abdomen and retroperitoneum with failure to thrive. “He was not eating and was G-tube dependent,” she recalled. “After a month of therapy, he started eating and had improvement in his quality of life,” although despite this improvement volumetric MRI remained unchanged.

Advances in bench to bedside approaches are also under way. Hakon Hakonarson, MD, PhD, the founding director of the Center for Applied Genomics at CHOP, has discovered several genes with in vitro testing and zebra fish modeling, which has been followed by testing medicines on patients.

One such patient, according to Dr. Adams, had a severe central conducting lymphatic anomaly, with a pericardial effusion and significant dysfunction of the central conducting system. The patient was found to have an ARAF mutation, which induces ERK activation. “ERK is downstream of MEK, so the question was whether a MEK inhibitor, trametinib, could be used to treat this patient,” she said. “Trametinib was first used in tissue culture, then used in a zebra fish model and it showed some positive results. Then it was taken to the patient, who had improvement of pulmonary function, remodeling of the lymphatic system, and decrease in the size of his legs.”

Other antiangiogenic agents being used for the treatment of vascular anomalies include bevacizumab, which is being used in hereditary hemorrhagic telangiectasia, and thalidomide for HHT and arteriovenous malformations. For more information, Dr. Adams recommended a comprehensive review of vascular anomalies, related genes, and treatments that was published in Circulation Research.

The goal of future drug therapies is to support normal growth, “so we don’t need a maximum tolerated dose,” Dr. Adams said. “We need to be very careful of short-term and long-term side effects.”

Going forward, she said that she would like to see more natural history studies of vascular anomalies, improved outcome measures for clinical trials, adaptive study design, preclinical testing, animal model studies, universal availability of genomic testing, improvement of NIH funding, research collaboration nationally and internationally, and industry support.

Dr. Adams disclosed that she is a consultant to Venthera and Novartis.

dbrunk@mdedge.com

When Denise M. Adams, MD, began her career as a pediatric oncologist 25 years ago, there were many interventions for vascular anomalies, but most were surgery based and medical options were limited.

“The medicines we had were believed to be antiangiogenic and they were used not only for tumors but for all sorts of malformations,” Dr. Adams, a pediatric hematologist-oncologist at Children’s Hospital of Philadelphia, recalled during the annual meeting of the Society for Pediatric Dermatology. “I didn’t understand how so many different phenotypes could respond to the same medicine. Not all of them did, but some did have some response.”

She also grew frustrated by the lack of clinical trials and collaborative research groups involving patients with vascular anomalies. “I called this the chicken soup of medical management,” she said. “As we got more involved in vascular anomalies, the power of one patient or that power of a few patients led us in a direction for improved medical management. Or knowledge was gained by one patient who failed all noted medical management and led us into a direction repurposing a drug that actually wound up working.”

Propranolol, for example, became a key medicine for the treatment of vascular anomalies when it was found to improve hemangiomas in children who were given the drug for other reasons. “From this observation a key prospective study was performed and this beta-blocker became FDA approved for the treatment of complicated hemangiomas,” said Dr. Adams, who directs the hospital’s Comprehensive Vascular Anomalies Program. “That was how a bedside observation let to bench intervention, and how presently we are investigating bench interventions related to the mechanism of propranolol therapy.”

Then there is the story of the mammalian target of rapamycin (mTOR) inhibitor sirolimus. In her previous role as medical director of the Hemangioma and Vascular Malformation Center at Cincinnati Children’s Hospital, Dr. Adams and colleagues cared for an infant who presented with a Kaposiform hemangioendothelioma (KHE). “At that time, she was given our standard of practice for the treatment, but our standard of practice was not good enough,” she said.

While other options were being discussed for this patient, “we had been doing some collaborative work with pathology and nephrology on the PIKC3A pathway, because we knew that germline mutations of TEK were involved in this pathway, and we knew that 50% of patients with PTEN mutations had vascular anomalies. So, we hypothesized that this pathway was involved in vascular anomalies.”

They also had earlier success using mTOR inhibition for tuberous sclerosis patients with angiomyolipomas and patients with neurofibromatosis. “We needed a medicine that could be given orally because we did not think this patient was going to do well, so we started her on sirolimus,” Dr. Adams said. “She had a great response. This was followed by a phase 2 study, which proved efficacy and led to discovery of biomarkers.” This is where the angiopoietin-2 story started, she said, noting that this biomarker is now used “to differentiate KLA [Kaposiform lymphangiomatosis] from KHE and KLAs and KHE from other disorders.”

This bedside work helped researchers to better understand the mechanism of action in other disorders, such as observing somatic mutations in PIK3CA in patients with CLOVES syndrome. “This meant that we could now correlate the phenotype to the genotype, and it opened up targeted therapy with developmental therapeutics that were already in use for oncology,” Dr. Adams said. “We know we had mTOR inhibition with sirolimus and everolimus. We now have an AKT inhibitor, a PIK3CA inhibitor, and we now have another side of the pathway which deals with RASopathies, and some other medicines that we can use.”

Miransertib, a potent PAN-AKT inhibitor initially used for breast cancer, is currently being evaluated in open-label, phase 1 and 2 trials in patients with PIK3CA-related overgrowth spectrum (PROS) and Proteus syndrome. The dose used in a pilot study is about one-sixth of the dose used for oncology patients, Dr. Adams said.

She and her colleagues used miransertib to treat a 3-year-old with CLOVES syndrome who had lipomatous infiltration of the abdomen and retroperitoneum with failure to thrive. “He was not eating and was G-tube dependent,” she recalled. “After a month of therapy, he started eating and had improvement in his quality of life,” although despite this improvement volumetric MRI remained unchanged.

Advances in bench to bedside approaches are also under way. Hakon Hakonarson, MD, PhD, the founding director of the Center for Applied Genomics at CHOP, has discovered several genes with in vitro testing and zebra fish modeling, which has been followed by testing medicines on patients.

One such patient, according to Dr. Adams, had a severe central conducting lymphatic anomaly, with a pericardial effusion and significant dysfunction of the central conducting system. The patient was found to have an ARAF mutation, which induces ERK activation. “ERK is downstream of MEK, so the question was whether a MEK inhibitor, trametinib, could be used to treat this patient,” she said. “Trametinib was first used in tissue culture, then used in a zebra fish model and it showed some positive results. Then it was taken to the patient, who had improvement of pulmonary function, remodeling of the lymphatic system, and decrease in the size of his legs.”

Other antiangiogenic agents being used for the treatment of vascular anomalies include bevacizumab, which is being used in hereditary hemorrhagic telangiectasia, and thalidomide for HHT and arteriovenous malformations. For more information, Dr. Adams recommended a comprehensive review of vascular anomalies, related genes, and treatments that was published in Circulation Research.

The goal of future drug therapies is to support normal growth, “so we don’t need a maximum tolerated dose,” Dr. Adams said. “We need to be very careful of short-term and long-term side effects.”

Going forward, she said that she would like to see more natural history studies of vascular anomalies, improved outcome measures for clinical trials, adaptive study design, preclinical testing, animal model studies, universal availability of genomic testing, improvement of NIH funding, research collaboration nationally and internationally, and industry support.

Dr. Adams disclosed that she is a consultant to Venthera and Novartis.

dbrunk@mdedge.com

When Denise M. Adams, MD, began her career as a pediatric oncologist 25 years ago, there were many interventions for vascular anomalies, but most were surgery based and medical options were limited.

“The medicines we had were believed to be antiangiogenic and they were used not only for tumors but for all sorts of malformations,” Dr. Adams, a pediatric hematologist-oncologist at Children’s Hospital of Philadelphia, recalled during the annual meeting of the Society for Pediatric Dermatology. “I didn’t understand how so many different phenotypes could respond to the same medicine. Not all of them did, but some did have some response.”

She also grew frustrated by the lack of clinical trials and collaborative research groups involving patients with vascular anomalies. “I called this the chicken soup of medical management,” she said. “As we got more involved in vascular anomalies, the power of one patient or that power of a few patients led us in a direction for improved medical management. Or knowledge was gained by one patient who failed all noted medical management and led us into a direction repurposing a drug that actually wound up working.”

Propranolol, for example, became a key medicine for the treatment of vascular anomalies when it was found to improve hemangiomas in children who were given the drug for other reasons. “From this observation a key prospective study was performed and this beta-blocker became FDA approved for the treatment of complicated hemangiomas,” said Dr. Adams, who directs the hospital’s Comprehensive Vascular Anomalies Program. “That was how a bedside observation let to bench intervention, and how presently we are investigating bench interventions related to the mechanism of propranolol therapy.”

Then there is the story of the mammalian target of rapamycin (mTOR) inhibitor sirolimus. In her previous role as medical director of the Hemangioma and Vascular Malformation Center at Cincinnati Children’s Hospital, Dr. Adams and colleagues cared for an infant who presented with a Kaposiform hemangioendothelioma (KHE). “At that time, she was given our standard of practice for the treatment, but our standard of practice was not good enough,” she said.

While other options were being discussed for this patient, “we had been doing some collaborative work with pathology and nephrology on the PIKC3A pathway, because we knew that germline mutations of TEK were involved in this pathway, and we knew that 50% of patients with PTEN mutations had vascular anomalies. So, we hypothesized that this pathway was involved in vascular anomalies.”

They also had earlier success using mTOR inhibition for tuberous sclerosis patients with angiomyolipomas and patients with neurofibromatosis. “We needed a medicine that could be given orally because we did not think this patient was going to do well, so we started her on sirolimus,” Dr. Adams said. “She had a great response. This was followed by a phase 2 study, which proved efficacy and led to discovery of biomarkers.” This is where the angiopoietin-2 story started, she said, noting that this biomarker is now used “to differentiate KLA [Kaposiform lymphangiomatosis] from KHE and KLAs and KHE from other disorders.”

This bedside work helped researchers to better understand the mechanism of action in other disorders, such as observing somatic mutations in PIK3CA in patients with CLOVES syndrome. “This meant that we could now correlate the phenotype to the genotype, and it opened up targeted therapy with developmental therapeutics that were already in use for oncology,” Dr. Adams said. “We know we had mTOR inhibition with sirolimus and everolimus. We now have an AKT inhibitor, a PIK3CA inhibitor, and we now have another side of the pathway which deals with RASopathies, and some other medicines that we can use.”

Miransertib, a potent PAN-AKT inhibitor initially used for breast cancer, is currently being evaluated in open-label, phase 1 and 2 trials in patients with PIK3CA-related overgrowth spectrum (PROS) and Proteus syndrome. The dose used in a pilot study is about one-sixth of the dose used for oncology patients, Dr. Adams said.

She and her colleagues used miransertib to treat a 3-year-old with CLOVES syndrome who had lipomatous infiltration of the abdomen and retroperitoneum with failure to thrive. “He was not eating and was G-tube dependent,” she recalled. “After a month of therapy, he started eating and had improvement in his quality of life,” although despite this improvement volumetric MRI remained unchanged.

Advances in bench to bedside approaches are also under way. Hakon Hakonarson, MD, PhD, the founding director of the Center for Applied Genomics at CHOP, has discovered several genes with in vitro testing and zebra fish modeling, which has been followed by testing medicines on patients.

One such patient, according to Dr. Adams, had a severe central conducting lymphatic anomaly, with a pericardial effusion and significant dysfunction of the central conducting system. The patient was found to have an ARAF mutation, which induces ERK activation. “ERK is downstream of MEK, so the question was whether a MEK inhibitor, trametinib, could be used to treat this patient,” she said. “Trametinib was first used in tissue culture, then used in a zebra fish model and it showed some positive results. Then it was taken to the patient, who had improvement of pulmonary function, remodeling of the lymphatic system, and decrease in the size of his legs.”

Other antiangiogenic agents being used for the treatment of vascular anomalies include bevacizumab, which is being used in hereditary hemorrhagic telangiectasia, and thalidomide for HHT and arteriovenous malformations. For more information, Dr. Adams recommended a comprehensive review of vascular anomalies, related genes, and treatments that was published in Circulation Research.

The goal of future drug therapies is to support normal growth, “so we don’t need a maximum tolerated dose,” Dr. Adams said. “We need to be very careful of short-term and long-term side effects.”

Going forward, she said that she would like to see more natural history studies of vascular anomalies, improved outcome measures for clinical trials, adaptive study design, preclinical testing, animal model studies, universal availability of genomic testing, improvement of NIH funding, research collaboration nationally and internationally, and industry support.

Dr. Adams disclosed that she is a consultant to Venthera and Novartis.

dbrunk@mdedge.com

During the annual meeting of the Society for Pediatric Dermatology, Amy S. Paller, MD, MS, marveled on the remarkable advances in the treatment of inflammatory skin disorders during the past 2 decades.

“We’ve come a long way, from disease features being red, thick, and scaly and being treated with nonspecific therapy like topical steroids, keratolytics, and tar, to understanding disease pathogenesis and finding new targeted therapies for inflammatory skin disorders in children,” said Dr. Paller, professor and chair of the department of dermatology at Northwestern University, Chicago. “There are now studies moving forward with gene correction, gene replacement, the gene product replaced, or pathway inhibition to prevent the effects of genetic change.”

Technology is leading the way in generating new therapeutic advances, she continued, beyond traditional “omics” to lipidomics, metabolomics, glycomics, and kinomics. “This has enabled us to find new genetic disorders and their causes, to look at changes in gene expression patterns, and to look at changes in protein expression patterns that give us clues as to how to move forward with better therapy,” she said. “When we’re talking about new insights into pathogenesis-based therapy, we’re talking largely about understanding the pathways that lead to either inflammation or promoting cell proliferation and abnormal differentiation.”

Treating pediatric psoriasis

Dr. Paller discussed her approach to managing patients with pediatric psoriasis, an inflammatory disorder with IL-23/Th17 skewing. “First of all, ask about itch and pain with these patients,” she advised. “Interviews have shown that 61% of children experience some itch, 39% have pain or stinging, and in the ixekizumab trials, 72% had what’s considered meaningful itch, with at least 4 out of 10 (mean intensity 5.3) on the itch numeric rating scale. Little is known about the itch associated with psoriasis and its underlying cause – unrelated to the IL-4/IL-13 pathway activation of atopic dermatitis – but it’s worth asking about. I find that itch of the scalp is especially a problem in psoriasis.”

Physicians should also ask pediatric psoriasis patients about joint pain, because about 1% of them have psoriatic arthritis, which is much less common than in adults, “but important to find and manage,” she added. Dr. Paller recommends the new R-JET rapid joint exam technique, which is accompanied by a three-question survey and body diagram that facilitates identification of true arthritis, “so you can know how quickly to refer”.

Several studies have described an increased risk of metabolic syndrome in adolescents with pediatric psoriasis and now in prepubertal children with the disease. In a recent study of 60 consecutive prepubertal children with psoriasis, 70% of whom had mild disease, 40% were overweight or obese, 53% had central obesity, 27% had high levels of the HOMA-IR (homeostasis model assessment of insulin resistance) despite generally normal levels of fasting glucose, and 30% met criteria for metabolic syndrome.

“This really struck me because our AAD [American Academy of Dermatology] guidelines did not recommend screening for type 2 diabetes in prepubertal children, even if overweight, because the risk is so small,” Dr. Paller said. “This report suggests that we may need to reconsider this recommendation in prepubertal children with psoriasis.”

Meanwhile, the number of medications approved by the Food and Drug Administration and the European Medicines Agency for children with psoriasis who are 6 years of age and above continues to expand, including tumor necrosis factor (TNF) inhibitors, interleukin (IL)-23 inhibitors, and IL-17 inhibitors. Most children can now achieve a PASI 90 within 12 weeks with the IL-23 inhibitor ustekinumab and the IL-17 inhibitors ixekizumab and secukinumab, Dr. Paller said.

In the ixekizumab trial, there are head-to-head comparison data in a European arm that involved the use of etanercept, she said. “What’s most noticeable is the significant difference in those who were able to achieve PASI 90 or above with this IL-17 inhibitor, versus etanercept,” which she added, raises the question of whether aiming for a PASI 75 is adequate, "or should we strive for PASI 90?” A pediatric psoriasis study published in 2020 found that the greatest improvement in quality of life was associated with a PASI 90 and use of systemic treatments (JAMA Dermatol. 2020;156[1]:72-8).

Looking forward, phase 3 clinical trials are underway in pediatric patients with moderate to severe psoriasis for guselkumab, tildrakizumab, risankizumab, certolizumab, bimekizumab, and brodalumab. “The cost of all of these biologics is high, however. I remind everyone that we still have methotrexate,” she said. “The risk of side effects with our low-dose methotrexate treatment for psoriasis remains low, but methotrexate doesn’t hit these [high] PASI numbers and it’s much slower in its onset than biologics.”

Dr. Paller disclosed that she is a consultant to and/or an investigator for AbbVie, Arena, Bausch, Bristol Myers Squibb, Dermavant, Eli Lilly, Incyte, Forte, LEO Pharma, LifeMax, Pfizer, RAPT Therapeutics, Regeneron, and Sanofi.

Commentary by Robert Sidbury, MD, MPH

Dr. Paller reminds us of some essential features of pediatric psoriasis:
•    It can hurt. Ask your patients if it does.
•    It can itch. Look for excoriations, especially in the scalp.
•    It is often associated with metabolic syndrome, so check relevant biometrics and labs, and consider coincident insulin resistance.
•    Our traditional clinical trial target of PASI75, or a 75% reduction in body surface area involvement, is just not good enough. Studies have shown that the most meaningful quality-of-life gains come at PASI90 or above. 
•    With our newer biologics, such as IL-12/23 blockers (for instance, ustekinumab) and IL-17 blockers (for example, ixekizumab and secukinumab), PASI90 and better is a reasonable expectation, not a pipe dream. 

Dr. Sidbury is chief of dermatology at Seattle Children's Hospital and professor, department of pediatrics, University of Washington, Seattle. He is a site principal investigator for dupilumab trials, for which the hospital has a contract with Regeneron.

This article was updated 6/16/22.

During the annual meeting of the Society for Pediatric Dermatology, Amy S. Paller, MD, MS, marveled on the remarkable advances in the treatment of inflammatory skin disorders during the past 2 decades.

“We’ve come a long way, from disease features being red, thick, and scaly and being treated with nonspecific therapy like topical steroids, keratolytics, and tar, to understanding disease pathogenesis and finding new targeted therapies for inflammatory skin disorders in children,” said Dr. Paller, professor and chair of the department of dermatology at Northwestern University, Chicago. “There are now studies moving forward with gene correction, gene replacement, the gene product replaced, or pathway inhibition to prevent the effects of genetic change.”

Technology is leading the way in generating new therapeutic advances, she continued, beyond traditional “omics” to lipidomics, metabolomics, glycomics, and kinomics. “This has enabled us to find new genetic disorders and their causes, to look at changes in gene expression patterns, and to look at changes in protein expression patterns that give us clues as to how to move forward with better therapy,” she said. “When we’re talking about new insights into pathogenesis-based therapy, we’re talking largely about understanding the pathways that lead to either inflammation or promoting cell proliferation and abnormal differentiation.”

Treating pediatric psoriasis

Dr. Paller discussed her approach to managing patients with pediatric psoriasis, an inflammatory disorder with IL-23/Th17 skewing. “First of all, ask about itch and pain with these patients,” she advised. “Interviews have shown that 61% of children experience some itch, 39% have pain or stinging, and in the ixekizumab trials, 72% had what’s considered meaningful itch, with at least 4 out of 10 (mean intensity 5.3) on the itch numeric rating scale. Little is known about the itch associated with psoriasis and its underlying cause – unrelated to the IL-4/IL-13 pathway activation of atopic dermatitis – but it’s worth asking about. I find that itch of the scalp is especially a problem in psoriasis.”

Physicians should also ask pediatric psoriasis patients about joint pain, because about 1% of them have psoriatic arthritis, which is much less common than in adults, “but important to find and manage,” she added. Dr. Paller recommends the new R-JET rapid joint exam technique, which is accompanied by a three-question survey and body diagram that facilitates identification of true arthritis, “so you can know how quickly to refer”.

Several studies have described an increased risk of metabolic syndrome in adolescents with pediatric psoriasis and now in prepubertal children with the disease. In a recent study of 60 consecutive prepubertal children with psoriasis, 70% of whom had mild disease, 40% were overweight or obese, 53% had central obesity, 27% had high levels of the HOMA-IR (homeostasis model assessment of insulin resistance) despite generally normal levels of fasting glucose, and 30% met criteria for metabolic syndrome.

“This really struck me because our AAD [American Academy of Dermatology] guidelines did not recommend screening for type 2 diabetes in prepubertal children, even if overweight, because the risk is so small,” Dr. Paller said. “This report suggests that we may need to reconsider this recommendation in prepubertal children with psoriasis.”

Meanwhile, the number of medications approved by the Food and Drug Administration and the European Medicines Agency for children with psoriasis who are 6 years of age and above continues to expand, including tumor necrosis factor (TNF) inhibitors, interleukin (IL)-23 inhibitors, and IL-17 inhibitors. Most children can now achieve a PASI 90 within 12 weeks with the IL-23 inhibitor ustekinumab and the IL-17 inhibitors ixekizumab and secukinumab, Dr. Paller said.

In the ixekizumab trial, there are head-to-head comparison data in a European arm that involved the use of etanercept, she said. “What’s most noticeable is the significant difference in those who were able to achieve PASI 90 or above with this IL-17 inhibitor, versus etanercept,” which she added, raises the question of whether aiming for a PASI 75 is adequate, "or should we strive for PASI 90?” A pediatric psoriasis study published in 2020 found that the greatest improvement in quality of life was associated with a PASI 90 and use of systemic treatments (JAMA Dermatol. 2020;156[1]:72-8).

Looking forward, phase 3 clinical trials are underway in pediatric patients with moderate to severe psoriasis for guselkumab, tildrakizumab, risankizumab, certolizumab, bimekizumab, and brodalumab. “The cost of all of these biologics is high, however. I remind everyone that we still have methotrexate,” she said. “The risk of side effects with our low-dose methotrexate treatment for psoriasis remains low, but methotrexate doesn’t hit these [high] PASI numbers and it’s much slower in its onset than biologics.”

Dr. Paller disclosed that she is a consultant to and/or an investigator for AbbVie, Arena, Bausch, Bristol Myers Squibb, Dermavant, Eli Lilly, Incyte, Forte, LEO Pharma, LifeMax, Pfizer, RAPT Therapeutics, Regeneron, and Sanofi.

Commentary by Robert Sidbury, MD, MPH

Dr. Paller reminds us of some essential features of pediatric psoriasis:
•    It can hurt. Ask your patients if it does.
•    It can itch. Look for excoriations, especially in the scalp.
•    It is often associated with metabolic syndrome, so check relevant biometrics and labs, and consider coincident insulin resistance.
•    Our traditional clinical trial target of PASI75, or a 75% reduction in body surface area involvement, is just not good enough. Studies have shown that the most meaningful quality-of-life gains come at PASI90 or above. 
•    With our newer biologics, such as IL-12/23 blockers (for instance, ustekinumab) and IL-17 blockers (for example, ixekizumab and secukinumab), PASI90 and better is a reasonable expectation, not a pipe dream. 

Dr. Sidbury is chief of dermatology at Seattle Children's Hospital and professor, department of pediatrics, University of Washington, Seattle. He is a site principal investigator for dupilumab trials, for which the hospital has a contract with Regeneron.

This article was updated 6/16/22.

During the annual meeting of the Society for Pediatric Dermatology, Amy S. Paller, MD, MS, marveled on the remarkable advances in the treatment of inflammatory skin disorders during the past 2 decades.

“We’ve come a long way, from disease features being red, thick, and scaly and being treated with nonspecific therapy like topical steroids, keratolytics, and tar, to understanding disease pathogenesis and finding new targeted therapies for inflammatory skin disorders in children,” said Dr. Paller, professor and chair of the department of dermatology at Northwestern University, Chicago. “There are now studies moving forward with gene correction, gene replacement, the gene product replaced, or pathway inhibition to prevent the effects of genetic change.”

Technology is leading the way in generating new therapeutic advances, she continued, beyond traditional “omics” to lipidomics, metabolomics, glycomics, and kinomics. “This has enabled us to find new genetic disorders and their causes, to look at changes in gene expression patterns, and to look at changes in protein expression patterns that give us clues as to how to move forward with better therapy,” she said. “When we’re talking about new insights into pathogenesis-based therapy, we’re talking largely about understanding the pathways that lead to either inflammation or promoting cell proliferation and abnormal differentiation.”

Treating pediatric psoriasis

Dr. Paller discussed her approach to managing patients with pediatric psoriasis, an inflammatory disorder with IL-23/Th17 skewing. “First of all, ask about itch and pain with these patients,” she advised. “Interviews have shown that 61% of children experience some itch, 39% have pain or stinging, and in the ixekizumab trials, 72% had what’s considered meaningful itch, with at least 4 out of 10 (mean intensity 5.3) on the itch numeric rating scale. Little is known about the itch associated with psoriasis and its underlying cause – unrelated to the IL-4/IL-13 pathway activation of atopic dermatitis – but it’s worth asking about. I find that itch of the scalp is especially a problem in psoriasis.”

Physicians should also ask pediatric psoriasis patients about joint pain, because about 1% of them have psoriatic arthritis, which is much less common than in adults, “but important to find and manage,” she added. Dr. Paller recommends the new R-JET rapid joint exam technique, which is accompanied by a three-question survey and body diagram that facilitates identification of true arthritis, “so you can know how quickly to refer”.

Several studies have described an increased risk of metabolic syndrome in adolescents with pediatric psoriasis and now in prepubertal children with the disease. In a recent study of 60 consecutive prepubertal children with psoriasis, 70% of whom had mild disease, 40% were overweight or obese, 53% had central obesity, 27% had high levels of the HOMA-IR (homeostasis model assessment of insulin resistance) despite generally normal levels of fasting glucose, and 30% met criteria for metabolic syndrome.

“This really struck me because our AAD [American Academy of Dermatology] guidelines did not recommend screening for type 2 diabetes in prepubertal children, even if overweight, because the risk is so small,” Dr. Paller said. “This report suggests that we may need to reconsider this recommendation in prepubertal children with psoriasis.”

Meanwhile, the number of medications approved by the Food and Drug Administration and the European Medicines Agency for children with psoriasis who are 6 years of age and above continues to expand, including tumor necrosis factor (TNF) inhibitors, interleukin (IL)-23 inhibitors, and IL-17 inhibitors. Most children can now achieve a PASI 90 within 12 weeks with the IL-23 inhibitor ustekinumab and the IL-17 inhibitors ixekizumab and secukinumab, Dr. Paller said.

In the ixekizumab trial, there are head-to-head comparison data in a European arm that involved the use of etanercept, she said. “What’s most noticeable is the significant difference in those who were able to achieve PASI 90 or above with this IL-17 inhibitor, versus etanercept,” which she added, raises the question of whether aiming for a PASI 75 is adequate, "or should we strive for PASI 90?” A pediatric psoriasis study published in 2020 found that the greatest improvement in quality of life was associated with a PASI 90 and use of systemic treatments (JAMA Dermatol. 2020;156[1]:72-8).

Looking forward, phase 3 clinical trials are underway in pediatric patients with moderate to severe psoriasis for guselkumab, tildrakizumab, risankizumab, certolizumab, bimekizumab, and brodalumab. “The cost of all of these biologics is high, however. I remind everyone that we still have methotrexate,” she said. “The risk of side effects with our low-dose methotrexate treatment for psoriasis remains low, but methotrexate doesn’t hit these [high] PASI numbers and it’s much slower in its onset than biologics.”

Dr. Paller disclosed that she is a consultant to and/or an investigator for AbbVie, Arena, Bausch, Bristol Myers Squibb, Dermavant, Eli Lilly, Incyte, Forte, LEO Pharma, LifeMax, Pfizer, RAPT Therapeutics, Regeneron, and Sanofi.

Commentary by Robert Sidbury, MD, MPH

Dr. Paller reminds us of some essential features of pediatric psoriasis:
•    It can hurt. Ask your patients if it does.
•    It can itch. Look for excoriations, especially in the scalp.
•    It is often associated with metabolic syndrome, so check relevant biometrics and labs, and consider coincident insulin resistance.
•    Our traditional clinical trial target of PASI75, or a 75% reduction in body surface area involvement, is just not good enough. Studies have shown that the most meaningful quality-of-life gains come at PASI90 or above. 
•    With our newer biologics, such as IL-12/23 blockers (for instance, ustekinumab) and IL-17 blockers (for example, ixekizumab and secukinumab), PASI90 and better is a reasonable expectation, not a pipe dream. 

Dr. Sidbury is chief of dermatology at Seattle Children's Hospital and professor, department of pediatrics, University of Washington, Seattle. He is a site principal investigator for dupilumab trials, for which the hospital has a contract with Regeneron.

This article was updated 6/16/22.

The original diagnosis in this case was correct—Lyme disease (erythema chronicum migrans)—but unfortunately, the treatment was inadequate. Initially, this patient received a single dose of doxycycline 200 mg po, which is the appropriate preventative remedy when a deer tick has been attached for at least 36 hours and treatment can be initiated within 72 hours of tick removal. However, deer ticks, especially nymphs, are very small and their presence can go unnoticed, leading patients to guess (sometimes incorrectly) at the length of time a tick has been attached.

In this case, when the patient and his wife thought about it a bit more, they indicated that the tick may have been attached for several days before they removed it and went to see the PCP. Had the PCP known the tick had been attached longer, she would have advised watchful waiting and observation for signs and symptoms of Lyme disease.

Originally described in cases from Lyme, Connecticut, Lyme disease is now endemic to the northeastern United States from Maine to Virginia, and from the upper midwest to Minnesota. Laboratory diagnosis can be made by a 2-tiered serologic screening and confirmation with an enzyme-linked assay, followed by a western blot for positive or equivocal screening tests.

In 2019, the most recent year of reported Centers for Disease Control and Prevention (CDC) surveillance data, Maine recorded the highest incidence rate of Lyme disease.¹ In 70% to 80% of cases, an expanding horizon of infection creates the characteristic targetoid pink patch centered on the site of the tick bite.²

If there is a targetoid rash present in a patient from an endemic area, the CDC recommends empiric therapy with doxycycline 100 mg po bid for 10 to 14 days.³ (Worth noting: Patches may appear rather small in diameter, as was true in this case, or may be many centimeters in size and mimic cellulitis.) Alternative regimens for early localized disease include amoxicillin 500 mg po qid for pregnant patients, and cefuroxime 500 mg bid daily for 14 days for patients who are allergic to doxycycline.

Once treatment has been initiated, it’s important to monitor patients for any worsening symptoms, including fever and weakness, as these may be an indication of treatment failure or co-occurrence of anaplasmosis, ehrlichiosis, or babesiosis. In this case, the patient was prescribed doxycycline 100 mg bid for 14 days without any further signs or symptoms.

‌

Text courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).

The original diagnosis in this case was correct—Lyme disease (erythema chronicum migrans)—but unfortunately, the treatment was inadequate. Initially, this patient received a single dose of doxycycline 200 mg po, which is the appropriate preventative remedy when a deer tick has been attached for at least 36 hours and treatment can be initiated within 72 hours of tick removal. However, deer ticks, especially nymphs, are very small and their presence can go unnoticed, leading patients to guess (sometimes incorrectly) at the length of time a tick has been attached.

In this case, when the patient and his wife thought about it a bit more, they indicated that the tick may have been attached for several days before they removed it and went to see the PCP. Had the PCP known the tick had been attached longer, she would have advised watchful waiting and observation for signs and symptoms of Lyme disease.

Originally described in cases from Lyme, Connecticut, Lyme disease is now endemic to the northeastern United States from Maine to Virginia, and from the upper midwest to Minnesota. Laboratory diagnosis can be made by a 2-tiered serologic screening and confirmation with an enzyme-linked assay, followed by a western blot for positive or equivocal screening tests.

In 2019, the most recent year of reported Centers for Disease Control and Prevention (CDC) surveillance data, Maine recorded the highest incidence rate of Lyme disease.¹ In 70% to 80% of cases, an expanding horizon of infection creates the characteristic targetoid pink patch centered on the site of the tick bite.²

If there is a targetoid rash present in a patient from an endemic area, the CDC recommends empiric therapy with doxycycline 100 mg po bid for 10 to 14 days.³ (Worth noting: Patches may appear rather small in diameter, as was true in this case, or may be many centimeters in size and mimic cellulitis.) Alternative regimens for early localized disease include amoxicillin 500 mg po qid for pregnant patients, and cefuroxime 500 mg bid daily for 14 days for patients who are allergic to doxycycline.

Once treatment has been initiated, it’s important to monitor patients for any worsening symptoms, including fever and weakness, as these may be an indication of treatment failure or co-occurrence of anaplasmosis, ehrlichiosis, or babesiosis. In this case, the patient was prescribed doxycycline 100 mg bid for 14 days without any further signs or symptoms.

‌

Text courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).

The original diagnosis in this case was correct—Lyme disease (erythema chronicum migrans)—but unfortunately, the treatment was inadequate. Initially, this patient received a single dose of doxycycline 200 mg po, which is the appropriate preventative remedy when a deer tick has been attached for at least 36 hours and treatment can be initiated within 72 hours of tick removal. However, deer ticks, especially nymphs, are very small and their presence can go unnoticed, leading patients to guess (sometimes incorrectly) at the length of time a tick has been attached.

In this case, when the patient and his wife thought about it a bit more, they indicated that the tick may have been attached for several days before they removed it and went to see the PCP. Had the PCP known the tick had been attached longer, she would have advised watchful waiting and observation for signs and symptoms of Lyme disease.

Originally described in cases from Lyme, Connecticut, Lyme disease is now endemic to the northeastern United States from Maine to Virginia, and from the upper midwest to Minnesota. Laboratory diagnosis can be made by a 2-tiered serologic screening and confirmation with an enzyme-linked assay, followed by a western blot for positive or equivocal screening tests.

In 2019, the most recent year of reported Centers for Disease Control and Prevention (CDC) surveillance data, Maine recorded the highest incidence rate of Lyme disease.¹ In 70% to 80% of cases, an expanding horizon of infection creates the characteristic targetoid pink patch centered on the site of the tick bite.²

If there is a targetoid rash present in a patient from an endemic area, the CDC recommends empiric therapy with doxycycline 100 mg po bid for 10 to 14 days.³ (Worth noting: Patches may appear rather small in diameter, as was true in this case, or may be many centimeters in size and mimic cellulitis.) Alternative regimens for early localized disease include amoxicillin 500 mg po qid for pregnant patients, and cefuroxime 500 mg bid daily for 14 days for patients who are allergic to doxycycline.

Once treatment has been initiated, it’s important to monitor patients for any worsening symptoms, including fever and weakness, as these may be an indication of treatment failure or co-occurrence of anaplasmosis, ehrlichiosis, or babesiosis. In this case, the patient was prescribed doxycycline 100 mg bid for 14 days without any further signs or symptoms.

‌

Text courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).

Receiving treatment with a biologic medication, compared with no biologic treatment, appeared to be associated with a lower risk for developing psoriatic arthritis (PsA) in patients with psoriasis.

That’s according to the results of a nested case-control study involving electronic medical record data from an Israeli health maintenance organization in Arthritis & Rheumatology. Compared with no biologic treatment, the risk for developing PsA among PsO patients was reduced by 39%.

This study shows “a statistically and clinically significant lower risk for developing PsA among patients receiving biologic medications for psoriasis treatment,” wrote Yael Shalev Rosenthal, MPH, of the Sackler Faculty of Medicine, Tel Aviv University and colleagues. “The results suggest considering treatment with biologic medications in patients [who] present with significant risk factors for PsA at an earlier stage of treatment.”

“It would be nice to believe this story, but I don’t think we can based on the evidence we’ve got so far,” commented Philip Helliwell, PhD, DM, in an interview.

Dr. Helliwell, who is professor of clinical rheumatology at the University of Leeds (England) and an Honorary Consultant Rheumatologist for the Leeds Teaching Hospitals and Bradford Teaching Hospitals NHS Trust, noted that there were several issues with the current evidence.

Aside from their often retrospective or nonrandomized nature, prior analyses, including the current one, were based on EMR data.

“There’s actually no face-to-face patient contact going on here. It’s all done on coding, and coding can be unreliable,” Dr. Helliwell said.

While the study’s findings are “in line with other studies that have looked at this, and suggest that if you get a biologic, you’re less likely to get PsA with your psoriasis, there could be lots of reasons why.”

The big problem here is confounding by indication. “You don’t get on a biologic unless you’ve got bad psoriasis,” Dr. Helliwell explained. The Israeli criteria for starting a biologic are much higher than in the United Kingdom, he added, requiring more than 50% of patients’ body surface area to be affected, or a Psoriasis Area and Severity Index score of more than 50. Moreover, people with bad psoriasis are more likely to get PsA. This, however, makes the results more impressive.

Confounding by indication is an issue with this study, agreed consultant rheumatologist Adewale Adebajo, PhD, in a separate interview. He acknowledged, however, that the study’s authors did try to account for this by limiting the timescale of their analysis to the first 10 years of biologic therapy. They also used the usual methods of propensity score matching and multivariate Cox regression analysis to hopefully iron out any differences between the two groups of patients.

Study details and results

Ms. Rosenthal and coauthors analyzed EMR data on patients with psoriasis but not PsA that were logged in the Maccabi Healthcare Services (MHS) database. The MHS is the second-largest health maintenance organization in Israel, insuring over 2 million members, the researchers said.

In all, 663 patients with psoriasis but not PsA before or at initiation of biologic treatment were included in their analysis and matched to a control group of 663 patients with psoriasis who had not received biologic treatment. Propensity score matching was used to iron out some differences in baseline characteristics that had been seen between the groups, such as older age at diagnosis, higher body mass index, and a longer time between diagnosis and treatment seen in patients treated without biologics.

After adjusting for multiple risk factors and confounders, “the control group still had a significantly higher risk for PsA, compared to the biological treatment group,” the researchers wrote. Indeed, the adjusted hazard ratio was 1.39, with a 95% confidence interval between 1.03 and 1.87.

An ‘intriguing study’

“This is a retrospective study, and it has all the faults of a retrospective study,” said Dr. Adebajo, associate medical director for research and development at Barnsley (England) NHS Foundation Trust. But “these were patients who hopefully hadn’t yet developed psoriatic arthritis, although it is difficult to exclude subclinical psoriatic arthritis.”

The ideal would of course be to look at patients prospectively, but a randomized clinical trial would be unlikely to ever be conducted, Dr. Helliwell noted. “It would be unfair to randomize people who have got bad psoriasis and need a biologic to placebo just to prove the point really,” he said. “Getting control groups in this arena is very difficult.”

That doesn’t mean that prospective evaluation is not possible. Dr. Adebajo noted that there were already cohorts of newly diagnosed patients who were being prospectively followed up and those could perhaps be used to look at the question again in the future.

“You’re then looking at the natural history, the natural outcome, and you don’t need to worry about confounding because you’re just collecting all of the information as you go along.”

The idea that biologics might slow or even prevent the onset of PsA is “an interesting and enchanting hypothesis,” Dr. Adebajo said. “The study doesn’t prove the hypothesis, but it’s an intriguing study because it doesn’t disprove the hypothesis either.

“It gives us food for thought and a basis for further studies,” as well as some “encouragement to perhaps use biologics earlier because there may be additional benefits of doing so.”

That’s still to be proven of course, as it has been reported that patients with psoriasis can develop PsA while taking biologics.

“Clinically, that’s what we see in the combined clinic. We get people referred with psoriasis [who are] already on a biologic who developed musculoskeletal problems,” Dr. Helliwell said.

“It would be nice to believe” that biologics prevent or slow PsA in patients with psoriasis, Dr. Helliwell added, but I’m not sure these data are conclusive. From this study we know nothing about the phenotype of psoriasis, which is important in the development of PsA. In addition, we know that of the 30% of people with psoriasis who develop PsA, about half of these are undiagnosed at the time of such studies. In that case, what the biologic is doing is just treating preexisting PsA. If you count those numbers up, some of the differences between the two groups seen in this study are accounted for. From registry data there is no way of checking this.”

No external funding was used for the study. One author acknowledged acting as an investigator, adviser, or consultant to several pharmaceutical companies including AbbVie, Boehringer Ingelheim, Bristol-Myers Squibb, Coherus, Dexcel Pharma, Eli Lilly, Janssen, Novartis, and Pfizer. All other authors had nothing to disclose.

Dr. Helliwell and Dr. Adebajo had no conflicts of interest.

Receiving treatment with a biologic medication, compared with no biologic treatment, appeared to be associated with a lower risk for developing psoriatic arthritis (PsA) in patients with psoriasis.

That’s according to the results of a nested case-control study involving electronic medical record data from an Israeli health maintenance organization in Arthritis & Rheumatology. Compared with no biologic treatment, the risk for developing PsA among PsO patients was reduced by 39%.

This study shows “a statistically and clinically significant lower risk for developing PsA among patients receiving biologic medications for psoriasis treatment,” wrote Yael Shalev Rosenthal, MPH, of the Sackler Faculty of Medicine, Tel Aviv University and colleagues. “The results suggest considering treatment with biologic medications in patients [who] present with significant risk factors for PsA at an earlier stage of treatment.”

“It would be nice to believe this story, but I don’t think we can based on the evidence we’ve got so far,” commented Philip Helliwell, PhD, DM, in an interview.

Dr. Helliwell, who is professor of clinical rheumatology at the University of Leeds (England) and an Honorary Consultant Rheumatologist for the Leeds Teaching Hospitals and Bradford Teaching Hospitals NHS Trust, noted that there were several issues with the current evidence.

Aside from their often retrospective or nonrandomized nature, prior analyses, including the current one, were based on EMR data.

“There’s actually no face-to-face patient contact going on here. It’s all done on coding, and coding can be unreliable,” Dr. Helliwell said.

While the study’s findings are “in line with other studies that have looked at this, and suggest that if you get a biologic, you’re less likely to get PsA with your psoriasis, there could be lots of reasons why.”

The big problem here is confounding by indication. “You don’t get on a biologic unless you’ve got bad psoriasis,” Dr. Helliwell explained. The Israeli criteria for starting a biologic are much higher than in the United Kingdom, he added, requiring more than 50% of patients’ body surface area to be affected, or a Psoriasis Area and Severity Index score of more than 50. Moreover, people with bad psoriasis are more likely to get PsA. This, however, makes the results more impressive.

Confounding by indication is an issue with this study, agreed consultant rheumatologist Adewale Adebajo, PhD, in a separate interview. He acknowledged, however, that the study’s authors did try to account for this by limiting the timescale of their analysis to the first 10 years of biologic therapy. They also used the usual methods of propensity score matching and multivariate Cox regression analysis to hopefully iron out any differences between the two groups of patients.

Study details and results

Ms. Rosenthal and coauthors analyzed EMR data on patients with psoriasis but not PsA that were logged in the Maccabi Healthcare Services (MHS) database. The MHS is the second-largest health maintenance organization in Israel, insuring over 2 million members, the researchers said.

In all, 663 patients with psoriasis but not PsA before or at initiation of biologic treatment were included in their analysis and matched to a control group of 663 patients with psoriasis who had not received biologic treatment. Propensity score matching was used to iron out some differences in baseline characteristics that had been seen between the groups, such as older age at diagnosis, higher body mass index, and a longer time between diagnosis and treatment seen in patients treated without biologics.

After adjusting for multiple risk factors and confounders, “the control group still had a significantly higher risk for PsA, compared to the biological treatment group,” the researchers wrote. Indeed, the adjusted hazard ratio was 1.39, with a 95% confidence interval between 1.03 and 1.87.

An ‘intriguing study’

“This is a retrospective study, and it has all the faults of a retrospective study,” said Dr. Adebajo, associate medical director for research and development at Barnsley (England) NHS Foundation Trust. But “these were patients who hopefully hadn’t yet developed psoriatic arthritis, although it is difficult to exclude subclinical psoriatic arthritis.”

The ideal would of course be to look at patients prospectively, but a randomized clinical trial would be unlikely to ever be conducted, Dr. Helliwell noted. “It would be unfair to randomize people who have got bad psoriasis and need a biologic to placebo just to prove the point really,” he said. “Getting control groups in this arena is very difficult.”

That doesn’t mean that prospective evaluation is not possible. Dr. Adebajo noted that there were already cohorts of newly diagnosed patients who were being prospectively followed up and those could perhaps be used to look at the question again in the future.

“You’re then looking at the natural history, the natural outcome, and you don’t need to worry about confounding because you’re just collecting all of the information as you go along.”

The idea that biologics might slow or even prevent the onset of PsA is “an interesting and enchanting hypothesis,” Dr. Adebajo said. “The study doesn’t prove the hypothesis, but it’s an intriguing study because it doesn’t disprove the hypothesis either.

“It gives us food for thought and a basis for further studies,” as well as some “encouragement to perhaps use biologics earlier because there may be additional benefits of doing so.”

That’s still to be proven of course, as it has been reported that patients with psoriasis can develop PsA while taking biologics.

“Clinically, that’s what we see in the combined clinic. We get people referred with psoriasis [who are] already on a biologic who developed musculoskeletal problems,” Dr. Helliwell said.

“It would be nice to believe” that biologics prevent or slow PsA in patients with psoriasis, Dr. Helliwell added, but I’m not sure these data are conclusive. From this study we know nothing about the phenotype of psoriasis, which is important in the development of PsA. In addition, we know that of the 30% of people with psoriasis who develop PsA, about half of these are undiagnosed at the time of such studies. In that case, what the biologic is doing is just treating preexisting PsA. If you count those numbers up, some of the differences between the two groups seen in this study are accounted for. From registry data there is no way of checking this.”

No external funding was used for the study. One author acknowledged acting as an investigator, adviser, or consultant to several pharmaceutical companies including AbbVie, Boehringer Ingelheim, Bristol-Myers Squibb, Coherus, Dexcel Pharma, Eli Lilly, Janssen, Novartis, and Pfizer. All other authors had nothing to disclose.

Dr. Helliwell and Dr. Adebajo had no conflicts of interest.

Receiving treatment with a biologic medication, compared with no biologic treatment, appeared to be associated with a lower risk for developing psoriatic arthritis (PsA) in patients with psoriasis.

That’s according to the results of a nested case-control study involving electronic medical record data from an Israeli health maintenance organization in Arthritis & Rheumatology. Compared with no biologic treatment, the risk for developing PsA among PsO patients was reduced by 39%.

This study shows “a statistically and clinically significant lower risk for developing PsA among patients receiving biologic medications for psoriasis treatment,” wrote Yael Shalev Rosenthal, MPH, of the Sackler Faculty of Medicine, Tel Aviv University and colleagues. “The results suggest considering treatment with biologic medications in patients [who] present with significant risk factors for PsA at an earlier stage of treatment.”

“It would be nice to believe this story, but I don’t think we can based on the evidence we’ve got so far,” commented Philip Helliwell, PhD, DM, in an interview.

Dr. Helliwell, who is professor of clinical rheumatology at the University of Leeds (England) and an Honorary Consultant Rheumatologist for the Leeds Teaching Hospitals and Bradford Teaching Hospitals NHS Trust, noted that there were several issues with the current evidence.

Aside from their often retrospective or nonrandomized nature, prior analyses, including the current one, were based on EMR data.

“There’s actually no face-to-face patient contact going on here. It’s all done on coding, and coding can be unreliable,” Dr. Helliwell said.

While the study’s findings are “in line with other studies that have looked at this, and suggest that if you get a biologic, you’re less likely to get PsA with your psoriasis, there could be lots of reasons why.”

The big problem here is confounding by indication. “You don’t get on a biologic unless you’ve got bad psoriasis,” Dr. Helliwell explained. The Israeli criteria for starting a biologic are much higher than in the United Kingdom, he added, requiring more than 50% of patients’ body surface area to be affected, or a Psoriasis Area and Severity Index score of more than 50. Moreover, people with bad psoriasis are more likely to get PsA. This, however, makes the results more impressive.

Confounding by indication is an issue with this study, agreed consultant rheumatologist Adewale Adebajo, PhD, in a separate interview. He acknowledged, however, that the study’s authors did try to account for this by limiting the timescale of their analysis to the first 10 years of biologic therapy. They also used the usual methods of propensity score matching and multivariate Cox regression analysis to hopefully iron out any differences between the two groups of patients.

Study details and results

Ms. Rosenthal and coauthors analyzed EMR data on patients with psoriasis but not PsA that were logged in the Maccabi Healthcare Services (MHS) database. The MHS is the second-largest health maintenance organization in Israel, insuring over 2 million members, the researchers said.

In all, 663 patients with psoriasis but not PsA before or at initiation of biologic treatment were included in their analysis and matched to a control group of 663 patients with psoriasis who had not received biologic treatment. Propensity score matching was used to iron out some differences in baseline characteristics that had been seen between the groups, such as older age at diagnosis, higher body mass index, and a longer time between diagnosis and treatment seen in patients treated without biologics.

After adjusting for multiple risk factors and confounders, “the control group still had a significantly higher risk for PsA, compared to the biological treatment group,” the researchers wrote. Indeed, the adjusted hazard ratio was 1.39, with a 95% confidence interval between 1.03 and 1.87.

An ‘intriguing study’

“This is a retrospective study, and it has all the faults of a retrospective study,” said Dr. Adebajo, associate medical director for research and development at Barnsley (England) NHS Foundation Trust. But “these were patients who hopefully hadn’t yet developed psoriatic arthritis, although it is difficult to exclude subclinical psoriatic arthritis.”

The ideal would of course be to look at patients prospectively, but a randomized clinical trial would be unlikely to ever be conducted, Dr. Helliwell noted. “It would be unfair to randomize people who have got bad psoriasis and need a biologic to placebo just to prove the point really,” he said. “Getting control groups in this arena is very difficult.”

That doesn’t mean that prospective evaluation is not possible. Dr. Adebajo noted that there were already cohorts of newly diagnosed patients who were being prospectively followed up and those could perhaps be used to look at the question again in the future.

“You’re then looking at the natural history, the natural outcome, and you don’t need to worry about confounding because you’re just collecting all of the information as you go along.”

The idea that biologics might slow or even prevent the onset of PsA is “an interesting and enchanting hypothesis,” Dr. Adebajo said. “The study doesn’t prove the hypothesis, but it’s an intriguing study because it doesn’t disprove the hypothesis either.

“It gives us food for thought and a basis for further studies,” as well as some “encouragement to perhaps use biologics earlier because there may be additional benefits of doing so.”

That’s still to be proven of course, as it has been reported that patients with psoriasis can develop PsA while taking biologics.

“Clinically, that’s what we see in the combined clinic. We get people referred with psoriasis [who are] already on a biologic who developed musculoskeletal problems,” Dr. Helliwell said.

“It would be nice to believe” that biologics prevent or slow PsA in patients with psoriasis, Dr. Helliwell added, but I’m not sure these data are conclusive. From this study we know nothing about the phenotype of psoriasis, which is important in the development of PsA. In addition, we know that of the 30% of people with psoriasis who develop PsA, about half of these are undiagnosed at the time of such studies. In that case, what the biologic is doing is just treating preexisting PsA. If you count those numbers up, some of the differences between the two groups seen in this study are accounted for. From registry data there is no way of checking this.”

No external funding was used for the study. One author acknowledged acting as an investigator, adviser, or consultant to several pharmaceutical companies including AbbVie, Boehringer Ingelheim, Bristol-Myers Squibb, Coherus, Dexcel Pharma, Eli Lilly, Janssen, Novartis, and Pfizer. All other authors had nothing to disclose.

Dr. Helliwell and Dr. Adebajo had no conflicts of interest.