Diffuse large B-cell lymphoma

New research suggests there are 4 different “locks” that keep the CARD11 protein in check.

Researchers say these locks, also known as “repressive elements,” work together to prevent unwarranted CARD11 signaling.

But mutations in CARD11 can perturb or bypass the action of the repressive elements, which leads to a level of hyperactive CARD11 signaling that supports lymphoma growth.

Joel Pomerantz, PhD, of the Johns Hopkins University School of Medicine in Baltimore, Maryland, and his colleagues reported these findings in 2 articles published in The Journal of Biological Chemistry.^1,2

The researchers noted that mutated CARD11 proteins are sometimes found in patients with lymphoma, particularly diffuse large B-cell lymphoma. But none of the mutations exist in the “lock region” of CARD11, known as the autoinhibitory domain.

To find out why, the team conducted experiments with T cells. They first genetically deleted CARD11’s autoinhibitory domain so that the protein was always “on” and signaling.

Then, to figure out which region of the autoinhibitory domain accounted for its function, the researchers systematically deleted 6 different segments of it one at a time, rather than deleting the whole thing.

They expected most of the deletions to keep CARD11 inactive and 1 or 2 to “unlock” it. However, none of the deletions unlocked it, which suggested there was more than 1 repressive element within the autoinhibitory domain.

To see if that was the case and to find out how many repressive elements there might be, the researchers deleted the full autoinhibitory domain again, then added back small regions of it.

In this way, they pieced together the presence of 4 different biochemical regions, or repressive elements, that are each capable of locking CARD11 on their own.

“Having 4 redundant repressive elements seems to explain why patients with lymphoma don’t have mutations in CARD11’s autoinhibitory domain,” Dr Pomerantz said. “A mutation in any one of the repressive elements would only unlock 1 of the 4 locks, keeping CARD11’s signaling under the control of the other 3.”

So where do the lymphoma-associated mutations occur, and how do they circumvent CARD11’s quadruple locks? Clinical data show that the mutations occur in 3 other regions of CARD11—the CARD, LATCH, and coiled-coil regions.

Dr Pomerantz and his colleagues conducted biochemical tests on T cells and found that those 3 regions clasp the autoinhibitory domain to keep CARD11’s activity on lockdown. This makes sense, Dr Pomerantz said, because CARD11 uses those same regions to connect with other signaling proteins to send its message.

“When they are interacting with the autoinhibitory domain, they can’t be interacting with other proteins,” he said.

According to Dr Pomerantz, single mutations in the CARD, LATCH, or coiled-coil regions appear to be sufficient to disable the 4 repressive elements. And the ultimate goal is to advance the development of therapies that rein in hyperactive CARD11 in patients with lymphoma.

“If we can understand how CARD11 is normally kept off, we might be able to mimic that with a drug,” he said. “We also hope to shed light on how different mutations in CARD11 affect its function and a patient’s prognosis.”

1. Cooperative Control of Caspase Recruitment Domain-Containing Protein 11 (CARD11) Signaling by an Unusual Array of Redundant Repressive Elements

2. Intramolecular Interactions and Regulation of Cofactor Binding by the Four Repressive Elements in the Caspase Recruitment Domain-Containing Protein 11 (CARD11) Inhibitory Domain

Diffuse large B-cell lymphoma

New research suggests there are 4 different “locks” that keep the CARD11 protein in check.

Researchers say these locks, also known as “repressive elements,” work together to prevent unwarranted CARD11 signaling.

But mutations in CARD11 can perturb or bypass the action of the repressive elements, which leads to a level of hyperactive CARD11 signaling that supports lymphoma growth.

Joel Pomerantz, PhD, of the Johns Hopkins University School of Medicine in Baltimore, Maryland, and his colleagues reported these findings in 2 articles published in The Journal of Biological Chemistry.^1,2

The researchers noted that mutated CARD11 proteins are sometimes found in patients with lymphoma, particularly diffuse large B-cell lymphoma. But none of the mutations exist in the “lock region” of CARD11, known as the autoinhibitory domain.

To find out why, the team conducted experiments with T cells. They first genetically deleted CARD11’s autoinhibitory domain so that the protein was always “on” and signaling.

Then, to figure out which region of the autoinhibitory domain accounted for its function, the researchers systematically deleted 6 different segments of it one at a time, rather than deleting the whole thing.

They expected most of the deletions to keep CARD11 inactive and 1 or 2 to “unlock” it. However, none of the deletions unlocked it, which suggested there was more than 1 repressive element within the autoinhibitory domain.

To see if that was the case and to find out how many repressive elements there might be, the researchers deleted the full autoinhibitory domain again, then added back small regions of it.

In this way, they pieced together the presence of 4 different biochemical regions, or repressive elements, that are each capable of locking CARD11 on their own.

“Having 4 redundant repressive elements seems to explain why patients with lymphoma don’t have mutations in CARD11’s autoinhibitory domain,” Dr Pomerantz said. “A mutation in any one of the repressive elements would only unlock 1 of the 4 locks, keeping CARD11’s signaling under the control of the other 3.”

So where do the lymphoma-associated mutations occur, and how do they circumvent CARD11’s quadruple locks? Clinical data show that the mutations occur in 3 other regions of CARD11—the CARD, LATCH, and coiled-coil regions.

Dr Pomerantz and his colleagues conducted biochemical tests on T cells and found that those 3 regions clasp the autoinhibitory domain to keep CARD11’s activity on lockdown. This makes sense, Dr Pomerantz said, because CARD11 uses those same regions to connect with other signaling proteins to send its message.

“When they are interacting with the autoinhibitory domain, they can’t be interacting with other proteins,” he said.

According to Dr Pomerantz, single mutations in the CARD, LATCH, or coiled-coil regions appear to be sufficient to disable the 4 repressive elements. And the ultimate goal is to advance the development of therapies that rein in hyperactive CARD11 in patients with lymphoma.

“If we can understand how CARD11 is normally kept off, we might be able to mimic that with a drug,” he said. “We also hope to shed light on how different mutations in CARD11 affect its function and a patient’s prognosis.”

1. Cooperative Control of Caspase Recruitment Domain-Containing Protein 11 (CARD11) Signaling by an Unusual Array of Redundant Repressive Elements

2. Intramolecular Interactions and Regulation of Cofactor Binding by the Four Repressive Elements in the Caspase Recruitment Domain-Containing Protein 11 (CARD11) Inhibitory Domain

Diffuse large B-cell lymphoma

New research suggests there are 4 different “locks” that keep the CARD11 protein in check.

Researchers say these locks, also known as “repressive elements,” work together to prevent unwarranted CARD11 signaling.

But mutations in CARD11 can perturb or bypass the action of the repressive elements, which leads to a level of hyperactive CARD11 signaling that supports lymphoma growth.

Joel Pomerantz, PhD, of the Johns Hopkins University School of Medicine in Baltimore, Maryland, and his colleagues reported these findings in 2 articles published in The Journal of Biological Chemistry.^1,2

The researchers noted that mutated CARD11 proteins are sometimes found in patients with lymphoma, particularly diffuse large B-cell lymphoma. But none of the mutations exist in the “lock region” of CARD11, known as the autoinhibitory domain.

To find out why, the team conducted experiments with T cells. They first genetically deleted CARD11’s autoinhibitory domain so that the protein was always “on” and signaling.

Then, to figure out which region of the autoinhibitory domain accounted for its function, the researchers systematically deleted 6 different segments of it one at a time, rather than deleting the whole thing.

They expected most of the deletions to keep CARD11 inactive and 1 or 2 to “unlock” it. However, none of the deletions unlocked it, which suggested there was more than 1 repressive element within the autoinhibitory domain.

To see if that was the case and to find out how many repressive elements there might be, the researchers deleted the full autoinhibitory domain again, then added back small regions of it.

In this way, they pieced together the presence of 4 different biochemical regions, or repressive elements, that are each capable of locking CARD11 on their own.

“Having 4 redundant repressive elements seems to explain why patients with lymphoma don’t have mutations in CARD11’s autoinhibitory domain,” Dr Pomerantz said. “A mutation in any one of the repressive elements would only unlock 1 of the 4 locks, keeping CARD11’s signaling under the control of the other 3.”

So where do the lymphoma-associated mutations occur, and how do they circumvent CARD11’s quadruple locks? Clinical data show that the mutations occur in 3 other regions of CARD11—the CARD, LATCH, and coiled-coil regions.

Dr Pomerantz and his colleagues conducted biochemical tests on T cells and found that those 3 regions clasp the autoinhibitory domain to keep CARD11’s activity on lockdown. This makes sense, Dr Pomerantz said, because CARD11 uses those same regions to connect with other signaling proteins to send its message.

“When they are interacting with the autoinhibitory domain, they can’t be interacting with other proteins,” he said.

According to Dr Pomerantz, single mutations in the CARD, LATCH, or coiled-coil regions appear to be sufficient to disable the 4 repressive elements. And the ultimate goal is to advance the development of therapies that rein in hyperactive CARD11 in patients with lymphoma.

“If we can understand how CARD11 is normally kept off, we might be able to mimic that with a drug,” he said. “We also hope to shed light on how different mutations in CARD11 affect its function and a patient’s prognosis.”

1. Cooperative Control of Caspase Recruitment Domain-Containing Protein 11 (CARD11) Signaling by an Unusual Array of Redundant Repressive Elements

2. Intramolecular Interactions and Regulation of Cofactor Binding by the Four Repressive Elements in the Caspase Recruitment Domain-Containing Protein 11 (CARD11) Inhibitory Domain

HSCT preparation

Photo by Chad McNeeley

Results from the 2014 Transplant Activity Survey suggest the use of hematopoietic stem cell transplant (HSCT) is still on the rise in Europe.

The European Society for Blood and Marrow Transplantation (EBMT) introduced this survey in 1990 to assess the use of HSCT in Europe.

Every year, all EBMT members and affiliated teams report their number of transplant patients by indication, donor type, and stem cell source.

Results from the 2014 survey revealed that 40,829 HSCTs were conducted in 36,469 patients at 656 centers in 47 countries. Fifty-seven percent of these transplants were autologous (n=20,704), and 43% were allogeneic (n=15,765).

When compared to data from the 2013 survey, the total number of transplants increased by 4.1%—4.5% for allogeneic HSCT and 3.8% for autologous HSCT.

The greatest increases in allogeneic HSCT occurred in Romania, Russia, Turkey, Croatia, Lithuania, and Serbia. And the greatest increases for autologous HSCT occurred in Romania, Serbia, Russia, Turkey, and Iran.

The most common indication for HSCT in 2014 was lymphoid neoplasias (57%, n=20,802), followed by leukemias (33%, n=11,853), non-malignant disorders (6%, n=2203), and solid tumors (4%, n=1458).

Compared to data from 2013, there was an increase in allogeneic HSCT for a few indications. There was a 13% increase in allogeneic HSCT for acute myeloid leukemia in first complete remission, a 14% increase for myeloproliferative neoplasms, and a 12% increase for severe aplastic anemia.

For autologous HSCT, there was a 21% decrease for chronic lymphocytic leukemia, a 5% increase for myeloma, a 44% increase for amyloidosis, an 8% increase for Hodgkin lymphoma, and a 40% increase for autoimmune diseases.

For more details, see the full report in Bone Marrow Transplantation.

HSCT preparation

Photo by Chad McNeeley

Results from the 2014 Transplant Activity Survey suggest the use of hematopoietic stem cell transplant (HSCT) is still on the rise in Europe.

The European Society for Blood and Marrow Transplantation (EBMT) introduced this survey in 1990 to assess the use of HSCT in Europe.

Every year, all EBMT members and affiliated teams report their number of transplant patients by indication, donor type, and stem cell source.

Results from the 2014 survey revealed that 40,829 HSCTs were conducted in 36,469 patients at 656 centers in 47 countries. Fifty-seven percent of these transplants were autologous (n=20,704), and 43% were allogeneic (n=15,765).

When compared to data from the 2013 survey, the total number of transplants increased by 4.1%—4.5% for allogeneic HSCT and 3.8% for autologous HSCT.

The greatest increases in allogeneic HSCT occurred in Romania, Russia, Turkey, Croatia, Lithuania, and Serbia. And the greatest increases for autologous HSCT occurred in Romania, Serbia, Russia, Turkey, and Iran.

The most common indication for HSCT in 2014 was lymphoid neoplasias (57%, n=20,802), followed by leukemias (33%, n=11,853), non-malignant disorders (6%, n=2203), and solid tumors (4%, n=1458).

Compared to data from 2013, there was an increase in allogeneic HSCT for a few indications. There was a 13% increase in allogeneic HSCT for acute myeloid leukemia in first complete remission, a 14% increase for myeloproliferative neoplasms, and a 12% increase for severe aplastic anemia.

For autologous HSCT, there was a 21% decrease for chronic lymphocytic leukemia, a 5% increase for myeloma, a 44% increase for amyloidosis, an 8% increase for Hodgkin lymphoma, and a 40% increase for autoimmune diseases.

For more details, see the full report in Bone Marrow Transplantation.

HSCT preparation

Photo by Chad McNeeley

Results from the 2014 Transplant Activity Survey suggest the use of hematopoietic stem cell transplant (HSCT) is still on the rise in Europe.

The European Society for Blood and Marrow Transplantation (EBMT) introduced this survey in 1990 to assess the use of HSCT in Europe.

Every year, all EBMT members and affiliated teams report their number of transplant patients by indication, donor type, and stem cell source.

Results from the 2014 survey revealed that 40,829 HSCTs were conducted in 36,469 patients at 656 centers in 47 countries. Fifty-seven percent of these transplants were autologous (n=20,704), and 43% were allogeneic (n=15,765).

When compared to data from the 2013 survey, the total number of transplants increased by 4.1%—4.5% for allogeneic HSCT and 3.8% for autologous HSCT.

The greatest increases in allogeneic HSCT occurred in Romania, Russia, Turkey, Croatia, Lithuania, and Serbia. And the greatest increases for autologous HSCT occurred in Romania, Serbia, Russia, Turkey, and Iran.

The most common indication for HSCT in 2014 was lymphoid neoplasias (57%, n=20,802), followed by leukemias (33%, n=11,853), non-malignant disorders (6%, n=2203), and solid tumors (4%, n=1458).

Compared to data from 2013, there was an increase in allogeneic HSCT for a few indications. There was a 13% increase in allogeneic HSCT for acute myeloid leukemia in first complete remission, a 14% increase for myeloproliferative neoplasms, and a 12% increase for severe aplastic anemia.

For autologous HSCT, there was a 21% decrease for chronic lymphocytic leukemia, a 5% increase for myeloma, a 44% increase for amyloidosis, an 8% increase for Hodgkin lymphoma, and a 40% increase for autoimmune diseases.

For more details, see the full report in Bone Marrow Transplantation.

Patient consults pharmacist

Photo by Rhoda Baer

A new study suggests that older adults in the US may be using potentially deadly combinations of prescription drugs, over-the-counter medications, and dietary supplements.

Investigators observed a significant increase in the proportion of adults ages 62 to 85 who were at risk of major drug-drug interactions—from 8% in 2005-2006 to 15% in 2010-2011.

Most of the combinations consisted of preventative cardiovascular medications such as antiplatelet drugs, statins, and omega-3 fish oil supplements.

Dima Mazen Qato, PharmD, of the University of Illinois at Chicago, and her colleagues reported these results in JAMA Internal Medicine.

The investigators examined changes in medication use in a nationally representative sample of adults between the ages of 62 and 85. The team conducted in-home interviews to accurately identify medications. They interviewed 2351 subjects in 2005-2006 and 2206 subjects in 2010-2011.

The results showed a significant increase in the proportion of subjects taking at least 1 prescription medication—from 84.1% in 2005-2006 to 87.7% in 2010-2011 (P=0.003).

The proportion of subjects taking at least 5 prescription medications rose significantly as well—from 30.6% to 35.8% (P=0.02).

The investigators said factors that may account for these increases include the implementation of Medicare Part D, changes in treatment guidelines, and the increased availability of generics for many commonly used drugs.

As an example, use of the statin simvastatin (Zocor)—which became available as a generic in 2006—rose from 10.3% in 2005-2006 to 22.5% in 2010-2011.

The use of over-the-counter medications declined from 44.4% in 2005-2006 to 37.9% in 2010-2011 (P<0.001), while the use of dietary supplements increased from 51.8% to 63.7% (P<0.001).

Drug-drug interactions

The investigators identified 15 potentially life-threatening combinations of the most commonly used medications and supplements in the study.

They found that 15.1% of subjects were at risk for a potential major drug-drug interaction in 2010-2011, compared with an estimated 8.4% in 2005-2006 (P<0.001).

Dr Qato noted that more than half of the potential interactions involved a nonprescription medication or dietary supplement.

Preventative cardiovascular medications such as statins (particularly, simvastatin), antiplatelet drugs (such as clopidogrel and aspirin), and supplements (specifically, omega-3 fish oil) accounted for the vast majority of these combinations.

“Many older patients seeking to improve their cardiovascular health are also regularly using interacting drug combinations that may worsen cardiovascular risk,” Dr Qato said.

“For example, the use of clopidogrel in combination with the proton-pump inhibitor omeprazole, aspirin, or naproxen—all over-the-counter medications—is associated with an increased risk of heart attacks, bleeding complications, or death. However, about 1.8%—or 1 million—older adults regularly use clopidogrel in interacting combinations.”

Dr Qato added that healthcare professionals should consider the adverse effects of commonly used prescription and nonprescription medication combinations when treating older adults and counsel patients about the risks.

“Improving safety in the use of interacting medication combinations has the potential to reduce preventable, potentially fatal, adverse drug events,” she said.

Patient consults pharmacist

Photo by Rhoda Baer

A new study suggests that older adults in the US may be using potentially deadly combinations of prescription drugs, over-the-counter medications, and dietary supplements.

Investigators observed a significant increase in the proportion of adults ages 62 to 85 who were at risk of major drug-drug interactions—from 8% in 2005-2006 to 15% in 2010-2011.

Most of the combinations consisted of preventative cardiovascular medications such as antiplatelet drugs, statins, and omega-3 fish oil supplements.

Dima Mazen Qato, PharmD, of the University of Illinois at Chicago, and her colleagues reported these results in JAMA Internal Medicine.

The investigators examined changes in medication use in a nationally representative sample of adults between the ages of 62 and 85. The team conducted in-home interviews to accurately identify medications. They interviewed 2351 subjects in 2005-2006 and 2206 subjects in 2010-2011.

The results showed a significant increase in the proportion of subjects taking at least 1 prescription medication—from 84.1% in 2005-2006 to 87.7% in 2010-2011 (P=0.003).

The proportion of subjects taking at least 5 prescription medications rose significantly as well—from 30.6% to 35.8% (P=0.02).

The investigators said factors that may account for these increases include the implementation of Medicare Part D, changes in treatment guidelines, and the increased availability of generics for many commonly used drugs.

As an example, use of the statin simvastatin (Zocor)—which became available as a generic in 2006—rose from 10.3% in 2005-2006 to 22.5% in 2010-2011.

The use of over-the-counter medications declined from 44.4% in 2005-2006 to 37.9% in 2010-2011 (P<0.001), while the use of dietary supplements increased from 51.8% to 63.7% (P<0.001).

Drug-drug interactions

The investigators identified 15 potentially life-threatening combinations of the most commonly used medications and supplements in the study.

They found that 15.1% of subjects were at risk for a potential major drug-drug interaction in 2010-2011, compared with an estimated 8.4% in 2005-2006 (P<0.001).

Dr Qato noted that more than half of the potential interactions involved a nonprescription medication or dietary supplement.

Preventative cardiovascular medications such as statins (particularly, simvastatin), antiplatelet drugs (such as clopidogrel and aspirin), and supplements (specifically, omega-3 fish oil) accounted for the vast majority of these combinations.

“Many older patients seeking to improve their cardiovascular health are also regularly using interacting drug combinations that may worsen cardiovascular risk,” Dr Qato said.

“For example, the use of clopidogrel in combination with the proton-pump inhibitor omeprazole, aspirin, or naproxen—all over-the-counter medications—is associated with an increased risk of heart attacks, bleeding complications, or death. However, about 1.8%—or 1 million—older adults regularly use clopidogrel in interacting combinations.”

Dr Qato added that healthcare professionals should consider the adverse effects of commonly used prescription and nonprescription medication combinations when treating older adults and counsel patients about the risks.

“Improving safety in the use of interacting medication combinations has the potential to reduce preventable, potentially fatal, adverse drug events,” she said.

Patient consults pharmacist

Photo by Rhoda Baer

A new study suggests that older adults in the US may be using potentially deadly combinations of prescription drugs, over-the-counter medications, and dietary supplements.

Investigators observed a significant increase in the proportion of adults ages 62 to 85 who were at risk of major drug-drug interactions—from 8% in 2005-2006 to 15% in 2010-2011.

Most of the combinations consisted of preventative cardiovascular medications such as antiplatelet drugs, statins, and omega-3 fish oil supplements.

Dima Mazen Qato, PharmD, of the University of Illinois at Chicago, and her colleagues reported these results in JAMA Internal Medicine.

The investigators examined changes in medication use in a nationally representative sample of adults between the ages of 62 and 85. The team conducted in-home interviews to accurately identify medications. They interviewed 2351 subjects in 2005-2006 and 2206 subjects in 2010-2011.

The results showed a significant increase in the proportion of subjects taking at least 1 prescription medication—from 84.1% in 2005-2006 to 87.7% in 2010-2011 (P=0.003).

The proportion of subjects taking at least 5 prescription medications rose significantly as well—from 30.6% to 35.8% (P=0.02).

The investigators said factors that may account for these increases include the implementation of Medicare Part D, changes in treatment guidelines, and the increased availability of generics for many commonly used drugs.

As an example, use of the statin simvastatin (Zocor)—which became available as a generic in 2006—rose from 10.3% in 2005-2006 to 22.5% in 2010-2011.

The use of over-the-counter medications declined from 44.4% in 2005-2006 to 37.9% in 2010-2011 (P<0.001), while the use of dietary supplements increased from 51.8% to 63.7% (P<0.001).

Drug-drug interactions

The investigators identified 15 potentially life-threatening combinations of the most commonly used medications and supplements in the study.

They found that 15.1% of subjects were at risk for a potential major drug-drug interaction in 2010-2011, compared with an estimated 8.4% in 2005-2006 (P<0.001).

Dr Qato noted that more than half of the potential interactions involved a nonprescription medication or dietary supplement.

Preventative cardiovascular medications such as statins (particularly, simvastatin), antiplatelet drugs (such as clopidogrel and aspirin), and supplements (specifically, omega-3 fish oil) accounted for the vast majority of these combinations.

“Many older patients seeking to improve their cardiovascular health are also regularly using interacting drug combinations that may worsen cardiovascular risk,” Dr Qato said.

“For example, the use of clopidogrel in combination with the proton-pump inhibitor omeprazole, aspirin, or naproxen—all over-the-counter medications—is associated with an increased risk of heart attacks, bleeding complications, or death. However, about 1.8%—or 1 million—older adults regularly use clopidogrel in interacting combinations.”

Dr Qato added that healthcare professionals should consider the adverse effects of commonly used prescription and nonprescription medication combinations when treating older adults and counsel patients about the risks.

“Improving safety in the use of interacting medication combinations has the potential to reduce preventable, potentially fatal, adverse drug events,” she said.

Lab mouse

Preclinical data suggest that blocking the Rho-associated coiled-coil kinase 2 (ROCK2) signaling pathway with the ROCK2 inhibitor KD025 can ameliorate chronic graft-versus-host disease (cGVHD).

Previous studies have shown that IL-21 and IL-17, 2 pro-inflammatory cytokines regulated by the ROCK2 signaling pathway, play a key role in cGVHD pathogenesis.

In the new study, targeted ROCK2 inhibition with KD025 had a therapeutic effect on cGVHD cytokines and signaling pathways involved in the pathogenesis of cGVHD.

Bruce R. Blazar, MD, of the University of Minnesota in Minneapolis, and his colleagues reported these findings in Blood.

The research was supported by Kadmon Corporation, LLC, the company developing KD025, as well as other sources.

The researchers found that KD025 reversed the clinical and immunological symptoms of cGVHD in 2 murine models: a full major histocompatibility complex (MHC)-mismatch model of multi-organ system cGVHD with bronchiolitis obliterans syndrome and a minor MHC-mismatch model of sclerodermatous GVHD.

Mice treated with KD025 showed improvements in pulmonary function and had a significant decrease in cGVHD pathology in the lung, liver, and spleen, when compared to vehicle-treated animals.

In addition, KD025 treatment did not affect the graft-versus-leukemia effect or immune response to viral pathogens.

In both animal models, KD025 treatment downregulated phosphorylation of STAT3, a pro-inflammatory signaling pathway that plays a key role in the development of cGVHD.

In human cells, KD025 inhibited the production of IL-21, IL-17, and IFN-γ. The drug also decreased STAT3 activity.

In both murine and human cells, KD025 downregulated STAT3 phosphorylation and simultaneously upregulated STAT5 phosphorylation, thereby reducing cGVHD progression.

“These data demonstrate that ROCK2 inhibition decreases cGVHD manifestation in murine and human models, which correlates with a demonstrated effect on molecular signaling pathways responsible for cGVHD pathogenesis,” Dr Blazar said.

Based on these results, Kadmon is planning to initiate a phase 2 study of KD025 for the treatment of cGVHD in mid-2016. The drug has already been tested in phase 1 studies of healthy volunteers.

Lab mouse

Preclinical data suggest that blocking the Rho-associated coiled-coil kinase 2 (ROCK2) signaling pathway with the ROCK2 inhibitor KD025 can ameliorate chronic graft-versus-host disease (cGVHD).

Previous studies have shown that IL-21 and IL-17, 2 pro-inflammatory cytokines regulated by the ROCK2 signaling pathway, play a key role in cGVHD pathogenesis.

In the new study, targeted ROCK2 inhibition with KD025 had a therapeutic effect on cGVHD cytokines and signaling pathways involved in the pathogenesis of cGVHD.

Bruce R. Blazar, MD, of the University of Minnesota in Minneapolis, and his colleagues reported these findings in Blood.

The research was supported by Kadmon Corporation, LLC, the company developing KD025, as well as other sources.

The researchers found that KD025 reversed the clinical and immunological symptoms of cGVHD in 2 murine models: a full major histocompatibility complex (MHC)-mismatch model of multi-organ system cGVHD with bronchiolitis obliterans syndrome and a minor MHC-mismatch model of sclerodermatous GVHD.

Mice treated with KD025 showed improvements in pulmonary function and had a significant decrease in cGVHD pathology in the lung, liver, and spleen, when compared to vehicle-treated animals.

In addition, KD025 treatment did not affect the graft-versus-leukemia effect or immune response to viral pathogens.

In both animal models, KD025 treatment downregulated phosphorylation of STAT3, a pro-inflammatory signaling pathway that plays a key role in the development of cGVHD.

In human cells, KD025 inhibited the production of IL-21, IL-17, and IFN-γ. The drug also decreased STAT3 activity.

In both murine and human cells, KD025 downregulated STAT3 phosphorylation and simultaneously upregulated STAT5 phosphorylation, thereby reducing cGVHD progression.

“These data demonstrate that ROCK2 inhibition decreases cGVHD manifestation in murine and human models, which correlates with a demonstrated effect on molecular signaling pathways responsible for cGVHD pathogenesis,” Dr Blazar said.

Based on these results, Kadmon is planning to initiate a phase 2 study of KD025 for the treatment of cGVHD in mid-2016. The drug has already been tested in phase 1 studies of healthy volunteers.

Lab mouse

Preclinical data suggest that blocking the Rho-associated coiled-coil kinase 2 (ROCK2) signaling pathway with the ROCK2 inhibitor KD025 can ameliorate chronic graft-versus-host disease (cGVHD).

Previous studies have shown that IL-21 and IL-17, 2 pro-inflammatory cytokines regulated by the ROCK2 signaling pathway, play a key role in cGVHD pathogenesis.

In the new study, targeted ROCK2 inhibition with KD025 had a therapeutic effect on cGVHD cytokines and signaling pathways involved in the pathogenesis of cGVHD.

Bruce R. Blazar, MD, of the University of Minnesota in Minneapolis, and his colleagues reported these findings in Blood.

The research was supported by Kadmon Corporation, LLC, the company developing KD025, as well as other sources.

The researchers found that KD025 reversed the clinical and immunological symptoms of cGVHD in 2 murine models: a full major histocompatibility complex (MHC)-mismatch model of multi-organ system cGVHD with bronchiolitis obliterans syndrome and a minor MHC-mismatch model of sclerodermatous GVHD.

Mice treated with KD025 showed improvements in pulmonary function and had a significant decrease in cGVHD pathology in the lung, liver, and spleen, when compared to vehicle-treated animals.

In addition, KD025 treatment did not affect the graft-versus-leukemia effect or immune response to viral pathogens.

In both animal models, KD025 treatment downregulated phosphorylation of STAT3, a pro-inflammatory signaling pathway that plays a key role in the development of cGVHD.

In human cells, KD025 inhibited the production of IL-21, IL-17, and IFN-γ. The drug also decreased STAT3 activity.

In both murine and human cells, KD025 downregulated STAT3 phosphorylation and simultaneously upregulated STAT5 phosphorylation, thereby reducing cGVHD progression.

“These data demonstrate that ROCK2 inhibition decreases cGVHD manifestation in murine and human models, which correlates with a demonstrated effect on molecular signaling pathways responsible for cGVHD pathogenesis,” Dr Blazar said.

Based on these results, Kadmon is planning to initiate a phase 2 study of KD025 for the treatment of cGVHD in mid-2016. The drug has already been tested in phase 1 studies of healthy volunteers.

Ixekizumab is approved to treat moderate to severe plaque psoriasis in adults, according to an announcement from the Food and Drug Administration.

“Today’s approval provides patients suffering from plaque psoriasis with another important treatment option to help relieve the skin irritation and discomfort from the condition,” Dr. Julie Beitz, director of the FDA’s Office of Drug Evaluation III, said in a statement .

Ixekizumab is an IgG4 monoclonal antibody that selectively binds with interleukin 17A (IL-17A) cytokines, inhibiting interaction with the IL-17 receptor. It is approved for patients who are candidates for systemic therapy, phototherapy, or a combination of both.

Courtesy Wikimedia Commons/FitzColinGerald/Creative Commons License

The safety and efficacy of ixekizumab were established in three randomized, placebo-controlled clinical trials with a total of 3,866 participants with plaque psoriasis who were candidates for systemic therapy or phototherapy. Patients treated with ixekizumab achieved greater clinical response than did those who received placebo.

The therapy was approved with a medication guide to inform patients that they may have a greater risk of an infection, or an allergic or autoimmune condition, according to the FDA announcement. The agency advised that physicians should monitor patient for serious allergic reactions and development or worsening of inflammatory bowel disease.

The most common adverse events seen in clinical trials of ixekizumab were upper respiratory infections, injection site reactions, and tinea.

Ixekizumab will be marketed as Taltz by Eli Lilly and Company.

dfulton@frontlinemedcom.com

On Twitter @denisefulton

Ixekizumab is approved to treat moderate to severe plaque psoriasis in adults, according to an announcement from the Food and Drug Administration.

“Today’s approval provides patients suffering from plaque psoriasis with another important treatment option to help relieve the skin irritation and discomfort from the condition,” Dr. Julie Beitz, director of the FDA’s Office of Drug Evaluation III, said in a statement .

Ixekizumab is an IgG4 monoclonal antibody that selectively binds with interleukin 17A (IL-17A) cytokines, inhibiting interaction with the IL-17 receptor. It is approved for patients who are candidates for systemic therapy, phototherapy, or a combination of both.

Courtesy Wikimedia Commons/FitzColinGerald/Creative Commons License

The safety and efficacy of ixekizumab were established in three randomized, placebo-controlled clinical trials with a total of 3,866 participants with plaque psoriasis who were candidates for systemic therapy or phototherapy. Patients treated with ixekizumab achieved greater clinical response than did those who received placebo.

The therapy was approved with a medication guide to inform patients that they may have a greater risk of an infection, or an allergic or autoimmune condition, according to the FDA announcement. The agency advised that physicians should monitor patient for serious allergic reactions and development or worsening of inflammatory bowel disease.

The most common adverse events seen in clinical trials of ixekizumab were upper respiratory infections, injection site reactions, and tinea.

Ixekizumab will be marketed as Taltz by Eli Lilly and Company.

dfulton@frontlinemedcom.com

On Twitter @denisefulton

Ixekizumab is approved to treat moderate to severe plaque psoriasis in adults, according to an announcement from the Food and Drug Administration.

“Today’s approval provides patients suffering from plaque psoriasis with another important treatment option to help relieve the skin irritation and discomfort from the condition,” Dr. Julie Beitz, director of the FDA’s Office of Drug Evaluation III, said in a statement .

Ixekizumab is an IgG4 monoclonal antibody that selectively binds with interleukin 17A (IL-17A) cytokines, inhibiting interaction with the IL-17 receptor. It is approved for patients who are candidates for systemic therapy, phototherapy, or a combination of both.

Courtesy Wikimedia Commons/FitzColinGerald/Creative Commons License

The safety and efficacy of ixekizumab were established in three randomized, placebo-controlled clinical trials with a total of 3,866 participants with plaque psoriasis who were candidates for systemic therapy or phototherapy. Patients treated with ixekizumab achieved greater clinical response than did those who received placebo.

The therapy was approved with a medication guide to inform patients that they may have a greater risk of an infection, or an allergic or autoimmune condition, according to the FDA announcement. The agency advised that physicians should monitor patient for serious allergic reactions and development or worsening of inflammatory bowel disease.

The most common adverse events seen in clinical trials of ixekizumab were upper respiratory infections, injection site reactions, and tinea.

Ixekizumab will be marketed as Taltz by Eli Lilly and Company.

dfulton@frontlinemedcom.com

On Twitter @denisefulton

Rheumatologists already are voicing concerns regarding a new proposal to test adjustments to how drugs administered in a physician’s office are paid for.

That proposal, published March 11 in the Federal Register, would test a change to the current reimbursement of average sales price plus 6% for Part B drugs with a lower add-on percentage of 2.5% plus $16.50.

In a fact sheet highlighting the proposals, the Centers for Medicare & Medicaid Services said the change to a lower percentage plus a flat fee “will cover the cost of any drug paid under Medicare Part B.”

However, there are already questions about that.

“While this may seem the way in which CMS will control costs, they fail to recognize the cost to facilities in obtaining approval for these treatments, receiving and storing, and ultimately safely administering these therapies in an environment that provides the best outcomes for patients,” Dr. Norman B. Gaylis, a rheumatologist in private practice in Aventura, Fla., said.

In fact, Dr. Gaylis adds that the focus on lowering drug expenses in the Part B space could have the unintended consequence of raising these expenses because it will force a change of venue.

“It has become so prohibitive that ultimately many patients will be referred to more expensive, less efficient outpatient facilities with, in fact, an increase in overall costs,” he said.

More than 300 provider and patient groups covering a range of specialties and including the American College of Rheumatology, the Coalition of State Rheumatology Organizations, and a number of state rheumatology organizations, are calling on Congress to ask CMS to withdraw the proposal.

In a March 17 letter to the majority and minority leaders in both chambers, the group is challenging the CMS assertion in the proposed rule that the current 6% add-on “may encourage the use of more expensive drugs because the 6% add-on generates more revenues for more expensive drugs.”

“This assumption fails to take into account the fact that providers’ prescribing decisions depend on a variety of factors, including clinical characteristics and the complex needs of the Medicare population,” the letter states. “Most importantly, there is no evidence indicating that the payment changes contemplated by the model will improve quality of care, and may adversely impact those patients that lose access to their most appropriate treatments.”

CMS offered two other pricing models that would be tested: indications-based pricing and reference pricing. The former would set payment rates based on the clinical effectiveness of a drug, while the latter would test the impact of setting a benchmark price for a group of drugs in a similar therapeutic class. Related to that is a proposal that CMS enter into voluntary risk-sharing agreements with drug manufacturers to link outcomes with price adjustments.

Dr. Gaylis suggested that CMS is going after the wrong party if cost containment is the ultimate goal here and should be focusing its efforts on the prices of the drugs themselves rather than how much they spend on physician reimbursement.

“Ironically, the major expense, i.e., the cost of drugs themselves, continues to spiral in the absence of any legitimate mechanism between CMS and pharma to contract prices that could save health care billions of dollars,” he said. “Ultimately, in my opinion, the solution rests in creating a fair and equal price for facilities administering these therapies and creating a pass-through where the drugs are not part of the physician’s risk, cost, or benefit and all payers, including CMS, can negotiate drug costs directly with the manufacturer.”

As part of the proposed rule, CMS also is considering creating feedback and decision-support tools to help, such as offering best practices for prescribing certain medications or providing feedback on prescribing patterns relative to local, regional, and national trends.

On the patient side, CMS is proposing to eliminate any patient cost sharing for office-administered drugs.

Comments on the proposals are due May 9.

gtwachtman@frontlinemedcom.com

Rheumatologists already are voicing concerns regarding a new proposal to test adjustments to how drugs administered in a physician’s office are paid for.

That proposal, published March 11 in the Federal Register, would test a change to the current reimbursement of average sales price plus 6% for Part B drugs with a lower add-on percentage of 2.5% plus $16.50.

In a fact sheet highlighting the proposals, the Centers for Medicare & Medicaid Services said the change to a lower percentage plus a flat fee “will cover the cost of any drug paid under Medicare Part B.”

However, there are already questions about that.

“While this may seem the way in which CMS will control costs, they fail to recognize the cost to facilities in obtaining approval for these treatments, receiving and storing, and ultimately safely administering these therapies in an environment that provides the best outcomes for patients,” Dr. Norman B. Gaylis, a rheumatologist in private practice in Aventura, Fla., said.

In fact, Dr. Gaylis adds that the focus on lowering drug expenses in the Part B space could have the unintended consequence of raising these expenses because it will force a change of venue.

“It has become so prohibitive that ultimately many patients will be referred to more expensive, less efficient outpatient facilities with, in fact, an increase in overall costs,” he said.

More than 300 provider and patient groups covering a range of specialties and including the American College of Rheumatology, the Coalition of State Rheumatology Organizations, and a number of state rheumatology organizations, are calling on Congress to ask CMS to withdraw the proposal.

In a March 17 letter to the majority and minority leaders in both chambers, the group is challenging the CMS assertion in the proposed rule that the current 6% add-on “may encourage the use of more expensive drugs because the 6% add-on generates more revenues for more expensive drugs.”

“This assumption fails to take into account the fact that providers’ prescribing decisions depend on a variety of factors, including clinical characteristics and the complex needs of the Medicare population,” the letter states. “Most importantly, there is no evidence indicating that the payment changes contemplated by the model will improve quality of care, and may adversely impact those patients that lose access to their most appropriate treatments.”

CMS offered two other pricing models that would be tested: indications-based pricing and reference pricing. The former would set payment rates based on the clinical effectiveness of a drug, while the latter would test the impact of setting a benchmark price for a group of drugs in a similar therapeutic class. Related to that is a proposal that CMS enter into voluntary risk-sharing agreements with drug manufacturers to link outcomes with price adjustments.

Dr. Gaylis suggested that CMS is going after the wrong party if cost containment is the ultimate goal here and should be focusing its efforts on the prices of the drugs themselves rather than how much they spend on physician reimbursement.

“Ironically, the major expense, i.e., the cost of drugs themselves, continues to spiral in the absence of any legitimate mechanism between CMS and pharma to contract prices that could save health care billions of dollars,” he said. “Ultimately, in my opinion, the solution rests in creating a fair and equal price for facilities administering these therapies and creating a pass-through where the drugs are not part of the physician’s risk, cost, or benefit and all payers, including CMS, can negotiate drug costs directly with the manufacturer.”

As part of the proposed rule, CMS also is considering creating feedback and decision-support tools to help, such as offering best practices for prescribing certain medications or providing feedback on prescribing patterns relative to local, regional, and national trends.

On the patient side, CMS is proposing to eliminate any patient cost sharing for office-administered drugs.

Comments on the proposals are due May 9.

gtwachtman@frontlinemedcom.com

Rheumatologists already are voicing concerns regarding a new proposal to test adjustments to how drugs administered in a physician’s office are paid for.

That proposal, published March 11 in the Federal Register, would test a change to the current reimbursement of average sales price plus 6% for Part B drugs with a lower add-on percentage of 2.5% plus $16.50.

In a fact sheet highlighting the proposals, the Centers for Medicare & Medicaid Services said the change to a lower percentage plus a flat fee “will cover the cost of any drug paid under Medicare Part B.”

However, there are already questions about that.

“While this may seem the way in which CMS will control costs, they fail to recognize the cost to facilities in obtaining approval for these treatments, receiving and storing, and ultimately safely administering these therapies in an environment that provides the best outcomes for patients,” Dr. Norman B. Gaylis, a rheumatologist in private practice in Aventura, Fla., said.

In fact, Dr. Gaylis adds that the focus on lowering drug expenses in the Part B space could have the unintended consequence of raising these expenses because it will force a change of venue.

“It has become so prohibitive that ultimately many patients will be referred to more expensive, less efficient outpatient facilities with, in fact, an increase in overall costs,” he said.

More than 300 provider and patient groups covering a range of specialties and including the American College of Rheumatology, the Coalition of State Rheumatology Organizations, and a number of state rheumatology organizations, are calling on Congress to ask CMS to withdraw the proposal.

In a March 17 letter to the majority and minority leaders in both chambers, the group is challenging the CMS assertion in the proposed rule that the current 6% add-on “may encourage the use of more expensive drugs because the 6% add-on generates more revenues for more expensive drugs.”

“This assumption fails to take into account the fact that providers’ prescribing decisions depend on a variety of factors, including clinical characteristics and the complex needs of the Medicare population,” the letter states. “Most importantly, there is no evidence indicating that the payment changes contemplated by the model will improve quality of care, and may adversely impact those patients that lose access to their most appropriate treatments.”

CMS offered two other pricing models that would be tested: indications-based pricing and reference pricing. The former would set payment rates based on the clinical effectiveness of a drug, while the latter would test the impact of setting a benchmark price for a group of drugs in a similar therapeutic class. Related to that is a proposal that CMS enter into voluntary risk-sharing agreements with drug manufacturers to link outcomes with price adjustments.

Dr. Gaylis suggested that CMS is going after the wrong party if cost containment is the ultimate goal here and should be focusing its efforts on the prices of the drugs themselves rather than how much they spend on physician reimbursement.

“Ironically, the major expense, i.e., the cost of drugs themselves, continues to spiral in the absence of any legitimate mechanism between CMS and pharma to contract prices that could save health care billions of dollars,” he said. “Ultimately, in my opinion, the solution rests in creating a fair and equal price for facilities administering these therapies and creating a pass-through where the drugs are not part of the physician’s risk, cost, or benefit and all payers, including CMS, can negotiate drug costs directly with the manufacturer.”

As part of the proposed rule, CMS also is considering creating feedback and decision-support tools to help, such as offering best practices for prescribing certain medications or providing feedback on prescribing patterns relative to local, regional, and national trends.

On the patient side, CMS is proposing to eliminate any patient cost sharing for office-administered drugs.

Comments on the proposals are due May 9.

gtwachtman@frontlinemedcom.com

Although psoriasis was once at the forefront of therapeutic advancements in dermatology, atopic dermatitis (AD) is now taking center stage with several new treatments in the pipeline. Dr. Emma Guttman-Yassky provides an overview of the future of AD treatment, which includes new topical and systemic agents that currently are moving forward in advanced clinical trials or are close to registration. She also discusses strategies for improving disease management in AD patients, noting that prevention and education of both patients and their caregivers are key to effective treatment.

Although psoriasis was once at the forefront of therapeutic advancements in dermatology, atopic dermatitis (AD) is now taking center stage with several new treatments in the pipeline. Dr. Emma Guttman-Yassky provides an overview of the future of AD treatment, which includes new topical and systemic agents that currently are moving forward in advanced clinical trials or are close to registration. She also discusses strategies for improving disease management in AD patients, noting that prevention and education of both patients and their caregivers are key to effective treatment.

Although psoriasis was once at the forefront of therapeutic advancements in dermatology, atopic dermatitis (AD) is now taking center stage with several new treatments in the pipeline. Dr. Emma Guttman-Yassky provides an overview of the future of AD treatment, which includes new topical and systemic agents that currently are moving forward in advanced clinical trials or are close to registration. She also discusses strategies for improving disease management in AD patients, noting that prevention and education of both patients and their caregivers are key to effective treatment.

A clinical risk score may help identify which children and adolescents with recent head injury are at risk for persistent postconcussion symptoms, according to an investigation published March 8 in JAMA.

Approximately one-third of pediatric patients with concussion have ongoing somatic, cognitive, psychological, or behavioral symptoms at 28 days. At present, neurologists have no tools to help predict which patients will be affected in this way. The 5P (Preventing Postconcussive Problems in Pediatrics) study was performed to develop and validate a clinical risk score for this purpose, said Roger Zemek, MD, a scientist at Children’s Hospital of Eastern Ontario Research Institute in Ottawa, Canada, and his associates.

This prospective cohort study involved patients between ages 5 and 17 (median age, 12) who presented to one of nine Canadian pediatric emergency departments within 48 hours of sustaining a concussion.

In the derivation cohort, 510 of 1,701 participants (30%) met the criteria for persistent postconcussion symptoms. The investigators assessed 47 possible predictive variables for their usefulness in predicting persistent postconcussion symptoms in this cohort. The variables were collected from demographic data, patient history, injury characteristics, physical examination, results on the Acute Concussion Evaluation Inventory and the Postconcussion Symptom Inventory, and patient and parent responses to weekly follow-up surveys during the month after the injury.

The investigators devised a clinical risk score using the following nine predictors that they found to be most accurate: age, gender, presence or absence of prior concussion, migraine history, presence or absence of current headache, sensitivity to noise, fatigue, slow responses to questions, and an abnormal tandem stance. They then selected three cutoff points to stratify the risk of persistent postconcussion symptoms: 0–3 points indicated low risk, 4–8 points indicated intermediate risk, and 9 or more points indicated high risk. Treating physicians also were asked to predict the likelihood of persistent postconcussion symptoms.

In the validation cohort, 291 of 883 participants (33%) met the criteria for persistent postconcussion symptoms. For low-risk patients, the sensitivity of the clinical risk score was 94%, the specificity was 18%, the negative predictive value was 85%, and the positive predictive value was 36%. For high-risk patients, the sensitivity of the clinical risk score was 20%, the specificity was 94%, the negative predictive value was 70%, and the positive predictive value was 60%.

In both sets of patients, the clinical risk score was significantly better than physician judgment in predicting persistent postconcussion symptoms. The clinical risk score has modest accuracy, however, at distinguishing between who will and who will not have persistent symptoms. This tool could be refined further, perhaps, by adding information regarding biomarkers, genetic susceptibility, or advanced neuroimaging, said Dr. Zemek and his associates.

—Mary Ann Moon

A clinical risk score may help identify which children and adolescents with recent head injury are at risk for persistent postconcussion symptoms, according to an investigation published March 8 in JAMA.

Approximately one-third of pediatric patients with concussion have ongoing somatic, cognitive, psychological, or behavioral symptoms at 28 days. At present, neurologists have no tools to help predict which patients will be affected in this way. The 5P (Preventing Postconcussive Problems in Pediatrics) study was performed to develop and validate a clinical risk score for this purpose, said Roger Zemek, MD, a scientist at Children’s Hospital of Eastern Ontario Research Institute in Ottawa, Canada, and his associates.

This prospective cohort study involved patients between ages 5 and 17 (median age, 12) who presented to one of nine Canadian pediatric emergency departments within 48 hours of sustaining a concussion.

In the derivation cohort, 510 of 1,701 participants (30%) met the criteria for persistent postconcussion symptoms. The investigators assessed 47 possible predictive variables for their usefulness in predicting persistent postconcussion symptoms in this cohort. The variables were collected from demographic data, patient history, injury characteristics, physical examination, results on the Acute Concussion Evaluation Inventory and the Postconcussion Symptom Inventory, and patient and parent responses to weekly follow-up surveys during the month after the injury.

The investigators devised a clinical risk score using the following nine predictors that they found to be most accurate: age, gender, presence or absence of prior concussion, migraine history, presence or absence of current headache, sensitivity to noise, fatigue, slow responses to questions, and an abnormal tandem stance. They then selected three cutoff points to stratify the risk of persistent postconcussion symptoms: 0–3 points indicated low risk, 4–8 points indicated intermediate risk, and 9 or more points indicated high risk. Treating physicians also were asked to predict the likelihood of persistent postconcussion symptoms.

In the validation cohort, 291 of 883 participants (33%) met the criteria for persistent postconcussion symptoms. For low-risk patients, the sensitivity of the clinical risk score was 94%, the specificity was 18%, the negative predictive value was 85%, and the positive predictive value was 36%. For high-risk patients, the sensitivity of the clinical risk score was 20%, the specificity was 94%, the negative predictive value was 70%, and the positive predictive value was 60%.

In both sets of patients, the clinical risk score was significantly better than physician judgment in predicting persistent postconcussion symptoms. The clinical risk score has modest accuracy, however, at distinguishing between who will and who will not have persistent symptoms. This tool could be refined further, perhaps, by adding information regarding biomarkers, genetic susceptibility, or advanced neuroimaging, said Dr. Zemek and his associates.

—Mary Ann Moon

A clinical risk score may help identify which children and adolescents with recent head injury are at risk for persistent postconcussion symptoms, according to an investigation published March 8 in JAMA.

Approximately one-third of pediatric patients with concussion have ongoing somatic, cognitive, psychological, or behavioral symptoms at 28 days. At present, neurologists have no tools to help predict which patients will be affected in this way. The 5P (Preventing Postconcussive Problems in Pediatrics) study was performed to develop and validate a clinical risk score for this purpose, said Roger Zemek, MD, a scientist at Children’s Hospital of Eastern Ontario Research Institute in Ottawa, Canada, and his associates.

This prospective cohort study involved patients between ages 5 and 17 (median age, 12) who presented to one of nine Canadian pediatric emergency departments within 48 hours of sustaining a concussion.

In the derivation cohort, 510 of 1,701 participants (30%) met the criteria for persistent postconcussion symptoms. The investigators assessed 47 possible predictive variables for their usefulness in predicting persistent postconcussion symptoms in this cohort. The variables were collected from demographic data, patient history, injury characteristics, physical examination, results on the Acute Concussion Evaluation Inventory and the Postconcussion Symptom Inventory, and patient and parent responses to weekly follow-up surveys during the month after the injury.

The investigators devised a clinical risk score using the following nine predictors that they found to be most accurate: age, gender, presence or absence of prior concussion, migraine history, presence or absence of current headache, sensitivity to noise, fatigue, slow responses to questions, and an abnormal tandem stance. They then selected three cutoff points to stratify the risk of persistent postconcussion symptoms: 0–3 points indicated low risk, 4–8 points indicated intermediate risk, and 9 or more points indicated high risk. Treating physicians also were asked to predict the likelihood of persistent postconcussion symptoms.

In the validation cohort, 291 of 883 participants (33%) met the criteria for persistent postconcussion symptoms. For low-risk patients, the sensitivity of the clinical risk score was 94%, the specificity was 18%, the negative predictive value was 85%, and the positive predictive value was 36%. For high-risk patients, the sensitivity of the clinical risk score was 20%, the specificity was 94%, the negative predictive value was 70%, and the positive predictive value was 60%.

In both sets of patients, the clinical risk score was significantly better than physician judgment in predicting persistent postconcussion symptoms. The clinical risk score has modest accuracy, however, at distinguishing between who will and who will not have persistent symptoms. This tool could be refined further, perhaps, by adding information regarding biomarkers, genetic susceptibility, or advanced neuroimaging, said Dr. Zemek and his associates.

—Mary Ann Moon

The treatment of bone sarcomas in adults is guided as much by experience as it is by medical evidence, say sarcoma experts who should know.

“[L]arge prospective clinical trials in adults with bone sarcomas are lacking. Although translation of findings in pediatric studies to adults is possible, it is not clear if findings from pediatric studies truly apply to adults,” Dr. Michael J. Wagner and his colleagues from the University of Texas MD Anderson Cancer Center in Houston said.

In a review article in the Journal of Oncology Practice, the investigators outline how they have melded lessons learned from pediatric clinical trials with clinical experience treating adults with bone sarcomas.

Adult osteosarcomas

Although the peak incidence of osteosarcoma occurs in adolescents and young adults, some studies of various chemotherapy regimens have included middle-aged adults and even some patients in their 90s, although many have excluded patients older than 30, the authors noted.

In adults, and in children and adolescents and young adults, chemotherapy and definitive surgical resection are the mainstays of treatment, with the exception of osteosarcomas of the jaw, which are generally treated with resection alone. For the past three decades, adults with high-grade osteosarcomas have been treated with chemotherapy containing doxorubicin, cisplatin, high-dose methotrexate, and ifosfamide.

“However, important differences to consider in the treatment of older patients include, but are not limited to, the increased incidence of histologic variants of osteosarcoma (including secondary osteosarcomas) and medical comorbidities that may limit tolerance of older adults to dose-intense chemotherapy,” wrote Dr. Wagner and his colleagues (J Oncol Pract. 2016 Mar. doi: 10.1200/JOP.2015.009944).

High-grade localized osteosarcoma is treated with neoadjuvant chemotherapy, followed by limb-sparing surgery and adjuvant chemotherapy.

A poor response to neoadjuvant chemotherapy, defined as tumor necrosis of less than 90% at resection, is a marker for poor prognosis.

The authors previously reported that for patients with a poor response following a regimen of doxorubicin intravenous infusion at 90 mg/m² over 96 hours plus cisplatin infused intra-arterially at 120-160 mg/m² over 2 to 24 hours, the addition of high-dose methotrexate and ifosfamide resulted in significant improvement in continuous relapse-free survival.

At MD Anderson, adults with osteosarcoma receive preoperative chemotherapy with doxorubicin and cisplatin for three to four cycles and then undergo surgical resection. Those who have a good response go on to receive adjuvant chemotherapy with doxorubicin 75 mg/m2 and ifosfamide 10g/m2 for four cycles. Patients who have a poor response to neoadjuvant chemotherapy receive alternating courses of ifosfamide 14 g/m², high-dose methotrexate 10 to 12 g/m², and doxorubicin 75 mg/m² and ifosfamide 10 g/m² for up to 12 cycles or until intolerable adverse events.

Patients with metastatic relapsed/refractory osteosarcoma have 5-year overall survival rates ranging from 15% to 20%, the authors noted, adding that chemotherapy has “limited efficacy” in this setting.

Targeted agents, including the tyrosine kinase inhibitor sorafenib (Nexavar) and the mammalian target of rapamycin (mTOR) inhibitor everolimus (Afinitor) have been evaluated in phase II trials.

Ewing sarcoma

Evidence from clinical trials of chemotherapy regimens in Ewing sarcoma show that patients 18 and older tend to have less favorable outcomes than younger patients when treated with dose-dense regimens, the authors noted.

Their practice is to treat adults with Ewing sarcoma with upfront vincristine 2 mg on day 1, doxorubicin 75 to 90 mg/m² in a continuous 72-hour infusion, and ifosfamide 2.5 g/m² given over 3 hours daily for four doses, followed by surgery, and adjuvant chemotherapy with an ifosfamide-based regimen.

Giant cell tumors of bone

These rare osteolytic tumors are treated with surgery as the primary therapy if they are resectable. Patients with metastases (which paradoxically, are usually histologically benign) as well as those who have tumors in areas where surgery may cause unacceptable morbidities may be treated with serial embolization, denosumab (Xgeva), interferon, or pegylated interferon.

Chondrosarcoma

The so-called “conventional” sub-type of chondrosarcomas are not generally responsive to cytotoxic chemotherapy and best managed with surgery alone, the authors say. However, patients with mesenchymal chondrosarcoma are treated similarly to patients with Ewing sarcoma, and those with the dedifferentiated subtype are treated with an osteosarcoma regimens.

The authors noted that point mutations in IDH1 and IDH2 have recently been discovered in chondrosarcomas, making them potential targets for an experimental IDH-1 inhibitor.

Dr. Wagner and coauthor Dr. J. Andrew Livingston reported no relevant disclosures. Coauthors Dr. Shreyaskumar R. Patel and Dr. Robert S. Benjamin reported consulting, advisory roles, research funding, or ownership interests in various pharmaceutical companies.

The treatment of bone sarcomas in adults is guided as much by experience as it is by medical evidence, say sarcoma experts who should know.

“[L]arge prospective clinical trials in adults with bone sarcomas are lacking. Although translation of findings in pediatric studies to adults is possible, it is not clear if findings from pediatric studies truly apply to adults,” Dr. Michael J. Wagner and his colleagues from the University of Texas MD Anderson Cancer Center in Houston said.

In a review article in the Journal of Oncology Practice, the investigators outline how they have melded lessons learned from pediatric clinical trials with clinical experience treating adults with bone sarcomas.

Adult osteosarcomas

Although the peak incidence of osteosarcoma occurs in adolescents and young adults, some studies of various chemotherapy regimens have included middle-aged adults and even some patients in their 90s, although many have excluded patients older than 30, the authors noted.

In adults, and in children and adolescents and young adults, chemotherapy and definitive surgical resection are the mainstays of treatment, with the exception of osteosarcomas of the jaw, which are generally treated with resection alone. For the past three decades, adults with high-grade osteosarcomas have been treated with chemotherapy containing doxorubicin, cisplatin, high-dose methotrexate, and ifosfamide.

“However, important differences to consider in the treatment of older patients include, but are not limited to, the increased incidence of histologic variants of osteosarcoma (including secondary osteosarcomas) and medical comorbidities that may limit tolerance of older adults to dose-intense chemotherapy,” wrote Dr. Wagner and his colleagues (J Oncol Pract. 2016 Mar. doi: 10.1200/JOP.2015.009944).

High-grade localized osteosarcoma is treated with neoadjuvant chemotherapy, followed by limb-sparing surgery and adjuvant chemotherapy.

A poor response to neoadjuvant chemotherapy, defined as tumor necrosis of less than 90% at resection, is a marker for poor prognosis.

The authors previously reported that for patients with a poor response following a regimen of doxorubicin intravenous infusion at 90 mg/m² over 96 hours plus cisplatin infused intra-arterially at 120-160 mg/m² over 2 to 24 hours, the addition of high-dose methotrexate and ifosfamide resulted in significant improvement in continuous relapse-free survival.

At MD Anderson, adults with osteosarcoma receive preoperative chemotherapy with doxorubicin and cisplatin for three to four cycles and then undergo surgical resection. Those who have a good response go on to receive adjuvant chemotherapy with doxorubicin 75 mg/m2 and ifosfamide 10g/m2 for four cycles. Patients who have a poor response to neoadjuvant chemotherapy receive alternating courses of ifosfamide 14 g/m², high-dose methotrexate 10 to 12 g/m², and doxorubicin 75 mg/m² and ifosfamide 10 g/m² for up to 12 cycles or until intolerable adverse events.

Patients with metastatic relapsed/refractory osteosarcoma have 5-year overall survival rates ranging from 15% to 20%, the authors noted, adding that chemotherapy has “limited efficacy” in this setting.

Targeted agents, including the tyrosine kinase inhibitor sorafenib (Nexavar) and the mammalian target of rapamycin (mTOR) inhibitor everolimus (Afinitor) have been evaluated in phase II trials.

Ewing sarcoma

Evidence from clinical trials of chemotherapy regimens in Ewing sarcoma show that patients 18 and older tend to have less favorable outcomes than younger patients when treated with dose-dense regimens, the authors noted.

Their practice is to treat adults with Ewing sarcoma with upfront vincristine 2 mg on day 1, doxorubicin 75 to 90 mg/m² in a continuous 72-hour infusion, and ifosfamide 2.5 g/m² given over 3 hours daily for four doses, followed by surgery, and adjuvant chemotherapy with an ifosfamide-based regimen.

Giant cell tumors of bone

These rare osteolytic tumors are treated with surgery as the primary therapy if they are resectable. Patients with metastases (which paradoxically, are usually histologically benign) as well as those who have tumors in areas where surgery may cause unacceptable morbidities may be treated with serial embolization, denosumab (Xgeva), interferon, or pegylated interferon.

Chondrosarcoma

The so-called “conventional” sub-type of chondrosarcomas are not generally responsive to cytotoxic chemotherapy and best managed with surgery alone, the authors say. However, patients with mesenchymal chondrosarcoma are treated similarly to patients with Ewing sarcoma, and those with the dedifferentiated subtype are treated with an osteosarcoma regimens.

The authors noted that point mutations in IDH1 and IDH2 have recently been discovered in chondrosarcomas, making them potential targets for an experimental IDH-1 inhibitor.

Dr. Wagner and coauthor Dr. J. Andrew Livingston reported no relevant disclosures. Coauthors Dr. Shreyaskumar R. Patel and Dr. Robert S. Benjamin reported consulting, advisory roles, research funding, or ownership interests in various pharmaceutical companies.

The treatment of bone sarcomas in adults is guided as much by experience as it is by medical evidence, say sarcoma experts who should know.

“[L]arge prospective clinical trials in adults with bone sarcomas are lacking. Although translation of findings in pediatric studies to adults is possible, it is not clear if findings from pediatric studies truly apply to adults,” Dr. Michael J. Wagner and his colleagues from the University of Texas MD Anderson Cancer Center in Houston said.

In a review article in the Journal of Oncology Practice, the investigators outline how they have melded lessons learned from pediatric clinical trials with clinical experience treating adults with bone sarcomas.

Adult osteosarcomas

Although the peak incidence of osteosarcoma occurs in adolescents and young adults, some studies of various chemotherapy regimens have included middle-aged adults and even some patients in their 90s, although many have excluded patients older than 30, the authors noted.

In adults, and in children and adolescents and young adults, chemotherapy and definitive surgical resection are the mainstays of treatment, with the exception of osteosarcomas of the jaw, which are generally treated with resection alone. For the past three decades, adults with high-grade osteosarcomas have been treated with chemotherapy containing doxorubicin, cisplatin, high-dose methotrexate, and ifosfamide.

“However, important differences to consider in the treatment of older patients include, but are not limited to, the increased incidence of histologic variants of osteosarcoma (including secondary osteosarcomas) and medical comorbidities that may limit tolerance of older adults to dose-intense chemotherapy,” wrote Dr. Wagner and his colleagues (J Oncol Pract. 2016 Mar. doi: 10.1200/JOP.2015.009944).

High-grade localized osteosarcoma is treated with neoadjuvant chemotherapy, followed by limb-sparing surgery and adjuvant chemotherapy.

A poor response to neoadjuvant chemotherapy, defined as tumor necrosis of less than 90% at resection, is a marker for poor prognosis.

The authors previously reported that for patients with a poor response following a regimen of doxorubicin intravenous infusion at 90 mg/m² over 96 hours plus cisplatin infused intra-arterially at 120-160 mg/m² over 2 to 24 hours, the addition of high-dose methotrexate and ifosfamide resulted in significant improvement in continuous relapse-free survival.

At MD Anderson, adults with osteosarcoma receive preoperative chemotherapy with doxorubicin and cisplatin for three to four cycles and then undergo surgical resection. Those who have a good response go on to receive adjuvant chemotherapy with doxorubicin 75 mg/m2 and ifosfamide 10g/m2 for four cycles. Patients who have a poor response to neoadjuvant chemotherapy receive alternating courses of ifosfamide 14 g/m², high-dose methotrexate 10 to 12 g/m², and doxorubicin 75 mg/m² and ifosfamide 10 g/m² for up to 12 cycles or until intolerable adverse events.

Patients with metastatic relapsed/refractory osteosarcoma have 5-year overall survival rates ranging from 15% to 20%, the authors noted, adding that chemotherapy has “limited efficacy” in this setting.

Targeted agents, including the tyrosine kinase inhibitor sorafenib (Nexavar) and the mammalian target of rapamycin (mTOR) inhibitor everolimus (Afinitor) have been evaluated in phase II trials.

Ewing sarcoma

Evidence from clinical trials of chemotherapy regimens in Ewing sarcoma show that patients 18 and older tend to have less favorable outcomes than younger patients when treated with dose-dense regimens, the authors noted.

Their practice is to treat adults with Ewing sarcoma with upfront vincristine 2 mg on day 1, doxorubicin 75 to 90 mg/m² in a continuous 72-hour infusion, and ifosfamide 2.5 g/m² given over 3 hours daily for four doses, followed by surgery, and adjuvant chemotherapy with an ifosfamide-based regimen.

Giant cell tumors of bone

These rare osteolytic tumors are treated with surgery as the primary therapy if they are resectable. Patients with metastases (which paradoxically, are usually histologically benign) as well as those who have tumors in areas where surgery may cause unacceptable morbidities may be treated with serial embolization, denosumab (Xgeva), interferon, or pegylated interferon.

Chondrosarcoma

The so-called “conventional” sub-type of chondrosarcomas are not generally responsive to cytotoxic chemotherapy and best managed with surgery alone, the authors say. However, patients with mesenchymal chondrosarcoma are treated similarly to patients with Ewing sarcoma, and those with the dedifferentiated subtype are treated with an osteosarcoma regimens.

The authors noted that point mutations in IDH1 and IDH2 have recently been discovered in chondrosarcomas, making them potential targets for an experimental IDH-1 inhibitor.

Dr. Wagner and coauthor Dr. J. Andrew Livingston reported no relevant disclosures. Coauthors Dr. Shreyaskumar R. Patel and Dr. Robert S. Benjamin reported consulting, advisory roles, research funding, or ownership interests in various pharmaceutical companies.

High coffee consumption decreases the odds of developing multiple sclerosis (MS), according to two case–control studies published online ahead of print March 3 in the Journal of Neurology, Neurosurgery & Psychiatry. Anna K. Hedström, MD, PhD, a postdoctoral researcher at the Karolinska Institute, Stockholm, and her associates conducted the studies.

The investigators analyzed coffee consumption among 1,620 adults with MS and 2,788 healthy controls in the Swedish Epidemiological Investigation of Multiple Sclerosis (EIMS). They also examined coffee consumption in 1,159 adults with MS and 1,172 healthy controls in the Kaiser Permanente Medical Care Plan, Northern California Region (KPNC).

In EIMS, the adjusted odds ratio (OR) for developing MS was 0.70 among participants who drank more than six cups of coffee (ie, greater than 900 mL) daily at the index year, which was defined as the year of the initial appearance of symptoms indicative of MS. The corresponding ORs for those who reported high coffee consumption at five or 10 years before the study were 0.72 and 0.71, respectively, but these results were not statistically significant.

In KPNC, those who consumed four or more cups of coffee (ie, more than 948 mL) daily were significantly less likely to develop MS than were those who never drank coffee (OR, 0.69). In addition, people who drank four or more cups of coffee daily at least five years prior to the index year had significantly reduced odds of MS (OR, 0.64).

A meta-analysis of the combined results of the two studies indicated a significant 29% reduction in the likelihood of developing MS among the people with the greatest coffee consumption (ie, greater than 900 mL daily in EIMS and greater than 948 mL in KPNC). The investigators adjusted all the analyses for many demographic and environmental risk factors for MS, including age, gender, residential area, ancestry, smoking habits, exposure to passive smoking, sun exposure habits, and BMI at age 20.

No evidence indicated any associations between increased amounts of tea or soda intake and MS.

“Further studies are required to establish if it is in fact caffeine, or if there is another molecule in coffee underlying the findings, to longitudinally assess the association between consumption of coffee and disease activity in MS, and to evaluate the mechanisms by which coffee may be acting, which could thus lead to new therapeutic targets,” the researchers concluded.

—Lori Laubach

High coffee consumption decreases the odds of developing multiple sclerosis (MS), according to two case–control studies published online ahead of print March 3 in the Journal of Neurology, Neurosurgery & Psychiatry. Anna K. Hedström, MD, PhD, a postdoctoral researcher at the Karolinska Institute, Stockholm, and her associates conducted the studies.

The investigators analyzed coffee consumption among 1,620 adults with MS and 2,788 healthy controls in the Swedish Epidemiological Investigation of Multiple Sclerosis (EIMS). They also examined coffee consumption in 1,159 adults with MS and 1,172 healthy controls in the Kaiser Permanente Medical Care Plan, Northern California Region (KPNC).

In EIMS, the adjusted odds ratio (OR) for developing MS was 0.70 among participants who drank more than six cups of coffee (ie, greater than 900 mL) daily at the index year, which was defined as the year of the initial appearance of symptoms indicative of MS. The corresponding ORs for those who reported high coffee consumption at five or 10 years before the study were 0.72 and 0.71, respectively, but these results were not statistically significant.

In KPNC, those who consumed four or more cups of coffee (ie, more than 948 mL) daily were significantly less likely to develop MS than were those who never drank coffee (OR, 0.69). In addition, people who drank four or more cups of coffee daily at least five years prior to the index year had significantly reduced odds of MS (OR, 0.64).

A meta-analysis of the combined results of the two studies indicated a significant 29% reduction in the likelihood of developing MS among the people with the greatest coffee consumption (ie, greater than 900 mL daily in EIMS and greater than 948 mL in KPNC). The investigators adjusted all the analyses for many demographic and environmental risk factors for MS, including age, gender, residential area, ancestry, smoking habits, exposure to passive smoking, sun exposure habits, and BMI at age 20.

No evidence indicated any associations between increased amounts of tea or soda intake and MS.

“Further studies are required to establish if it is in fact caffeine, or if there is another molecule in coffee underlying the findings, to longitudinally assess the association between consumption of coffee and disease activity in MS, and to evaluate the mechanisms by which coffee may be acting, which could thus lead to new therapeutic targets,” the researchers concluded.

—Lori Laubach

High coffee consumption decreases the odds of developing multiple sclerosis (MS), according to two case–control studies published online ahead of print March 3 in the Journal of Neurology, Neurosurgery & Psychiatry. Anna K. Hedström, MD, PhD, a postdoctoral researcher at the Karolinska Institute, Stockholm, and her associates conducted the studies.

The investigators analyzed coffee consumption among 1,620 adults with MS and 2,788 healthy controls in the Swedish Epidemiological Investigation of Multiple Sclerosis (EIMS). They also examined coffee consumption in 1,159 adults with MS and 1,172 healthy controls in the Kaiser Permanente Medical Care Plan, Northern California Region (KPNC).

In EIMS, the adjusted odds ratio (OR) for developing MS was 0.70 among participants who drank more than six cups of coffee (ie, greater than 900 mL) daily at the index year, which was defined as the year of the initial appearance of symptoms indicative of MS. The corresponding ORs for those who reported high coffee consumption at five or 10 years before the study were 0.72 and 0.71, respectively, but these results were not statistically significant.

In KPNC, those who consumed four or more cups of coffee (ie, more than 948 mL) daily were significantly less likely to develop MS than were those who never drank coffee (OR, 0.69). In addition, people who drank four or more cups of coffee daily at least five years prior to the index year had significantly reduced odds of MS (OR, 0.64).

A meta-analysis of the combined results of the two studies indicated a significant 29% reduction in the likelihood of developing MS among the people with the greatest coffee consumption (ie, greater than 900 mL daily in EIMS and greater than 948 mL in KPNC). The investigators adjusted all the analyses for many demographic and environmental risk factors for MS, including age, gender, residential area, ancestry, smoking habits, exposure to passive smoking, sun exposure habits, and BMI at age 20.

No evidence indicated any associations between increased amounts of tea or soda intake and MS.

“Further studies are required to establish if it is in fact caffeine, or if there is another molecule in coffee underlying the findings, to longitudinally assess the association between consumption of coffee and disease activity in MS, and to evaluate the mechanisms by which coffee may be acting, which could thus lead to new therapeutic targets,” the researchers concluded.

—Lori Laubach