Emergency physician describes how to prepare for disasters

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SAN DIEGO – “Working at the top of your license,” focusing only on those tasks that cannot be performed by anyone else but you, is a key strategy when handling mass casualties, according to Dr. Toree McGowan, an emergency physician who works in a critical care facility in rural Oregon.

Vidyard Video

In our video interview at the annual meeting of the American College of Emergency Physicians, she outlined key strategies for obtaining resources and delegating care when managing mass casualties from disasters.

Dr. McGowan of the St. Charles Medical Group, Culver, Ore., said that, although she is the only physician at her rural critical care center about 70% of the time, she has established plans in place for obtaining additional staff and resources in the event of disasters. During her time in the military, she was among a team that implemented a disaster plan after a toxic chemical release at a nearby factory. The response was effective because the threat had been anticipated and a plan was in place. To develop the skills and strategies she describes in this interview, Dr. McGowan recommends free training that is available from the nonprofit National Disaster Life Support Foundation.
 

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SAN DIEGO – “Working at the top of your license,” focusing only on those tasks that cannot be performed by anyone else but you, is a key strategy when handling mass casualties, according to Dr. Toree McGowan, an emergency physician who works in a critical care facility in rural Oregon.

Vidyard Video

In our video interview at the annual meeting of the American College of Emergency Physicians, she outlined key strategies for obtaining resources and delegating care when managing mass casualties from disasters.

Dr. McGowan of the St. Charles Medical Group, Culver, Ore., said that, although she is the only physician at her rural critical care center about 70% of the time, she has established plans in place for obtaining additional staff and resources in the event of disasters. During her time in the military, she was among a team that implemented a disaster plan after a toxic chemical release at a nearby factory. The response was effective because the threat had been anticipated and a plan was in place. To develop the skills and strategies she describes in this interview, Dr. McGowan recommends free training that is available from the nonprofit National Disaster Life Support Foundation.
 

 

SAN DIEGO – “Working at the top of your license,” focusing only on those tasks that cannot be performed by anyone else but you, is a key strategy when handling mass casualties, according to Dr. Toree McGowan, an emergency physician who works in a critical care facility in rural Oregon.

Vidyard Video

In our video interview at the annual meeting of the American College of Emergency Physicians, she outlined key strategies for obtaining resources and delegating care when managing mass casualties from disasters.

Dr. McGowan of the St. Charles Medical Group, Culver, Ore., said that, although she is the only physician at her rural critical care center about 70% of the time, she has established plans in place for obtaining additional staff and resources in the event of disasters. During her time in the military, she was among a team that implemented a disaster plan after a toxic chemical release at a nearby factory. The response was effective because the threat had been anticipated and a plan was in place. To develop the skills and strategies she describes in this interview, Dr. McGowan recommends free training that is available from the nonprofit National Disaster Life Support Foundation.
 

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Cognitive and Behavioral Problems Increase With ALS Disease Stage

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Data raise the question of whether cognitive and behavioral change should be included in ALS diagnostic criteria.

Cognitive deficits and behavioral symptoms that are specific to amyotrophic lateral sclerosis (ALS) occur more frequently as the disease progresses, according to research published online ahead of print September 12 in Neurology. Few patients are free of neuropsychologic impairment when they reach the final stage of the disease. It might be appropriate to include cognitive and behavioral change in the diagnostic criteria and future staging systems for ALS, said the authors.

In 2013, Elamin et al suggested that cognitive change in ALS may be associated with indirect measures of disease progression, such as total score on the ALS Functional Rating Scale-Revised. Christopher Crockford, PhD, a researcher at the University of Edinburgh, and colleagues sought to determine whether the cognitive and behavioral symptoms in ALS were more prevalent at more advanced stages of disease.

Christopher Crockford, PhD

The Role of Letter Fluency Impairment

They conducted a multicenter, cross-sectional, observational study that included 161 patients from Edinburgh, Dublin, and London with possible, probable, or definite ALS, according to revised El Escorial diagnostic criteria. The researchers also recruited 80 healthy, matched controls. Through interviews, Dr. Crockford and colleagues elicited demographic and clinical data. They measured participants’ clinical staging with the King’s Clinical Staging System and neuropsychologic status with the Edinburgh Cognitive and Behavioral ALS Screen (ECAS).

The investigators did not observe significant differences between the patient and control groups in background variables. Approximately 67% of patients with ALS were male, compared with 60% of controls. Mean age at testing was approximately 61 in both groups. Among patients with ALS, 40 were in Stage 1, 45 were in Stage 2, 22 were in Stage 3, and 54 were in Stage 4.

Compared with controls, patients with ALS had significantly worse cognitive performance on all domains of the ECAS except visuospatial functioning. Dr. Crockford’s group found a significant cross-sectional effect across disease stages for ALS-specific functions (eg, executive, language, and letter fluency) and ECAS total score. They did not find a similar effect for ALS-nonspecific functions (eg, memory and visuospatial). In addition, rates of ALS-specific impairment and behavioral change increased with increasing disease stage.

Letter fluency impairment may explain the relationship between cognitive function and disease stage, said the authors. They observed higher rates of all behavioral problems in later King’s stages. Bulbar signs were significantly related to ALS-specific scores, ECAS total score, and behavioral scores. Site of onset was not related to these scores, however.

Intervention programs to alleviate the effect of patients’ neuropsychologic impairment on caregivers may be appropriate, said the authors. “Furthermore, clinicians should be cognizant of current neuropsychologic status when prescribing life-prolonging interventions to patients and implement support structures for those with a neuropsychologic impairment,” they added.

Informing Patients and Caregivers

Although Dr. Crockford and colleagues focused on the behavioral and cognitive effects of ALS, the disease may affect mental health as well, said Paul Wicks, PhD, Vice President of Innovation at PatientsLikeMe in Cambridge, Massachusetts, and Steven M. Albert, PhD, Professor and Chair of Behavioral and Community Health Sciences at the University of Pittsburgh, in an accompanying editorial. The data show that the rates of major depression and depressed mood increase with increasing disease stage.

 

 

Drs. Wicks and Albert cited a survey in which 90% of patients and caregivers reported that their doctors had not told them that cognitive or psychologic symptoms can arise in ALS. “In our experience, colleagues report keeping the information from patients in order to spare them further distress,” they said. Yet most respondents to this survey reported that they would have liked to have been informed about these symptoms.

“Educating patients and caregivers that cognitive change is a part of ALS should be no different from similar discussions to be had in multiple sclerosis, Parkinson disease, and a range of other conditions,” said Drs. Wicks and Albert. “Keeping the truth from patients and caregivers is not protective; it is paternalistic, and it is time to stop. Only by facing up to the hard truth that one of the most dreaded conditions in medicine is even worse than we previously acknowledged can we take stock, marshal our resources, and make renewed plans to defeat our common enemy.”

Suggested Reading

Crockford C, Newton J, Lonergan K, et al. ALS-specific cognitive and behavior changes associated with advancing disease stage in ALS. Neurology. 2018 Sep 12 [Epub ahead of print].

Wicks P, Albert SM. It’s time to stop saying “the mind is unaffected” in ALS. Neurology. 2018 Sep 12 [Epub ahead of print].

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Data raise the question of whether cognitive and behavioral change should be included in ALS diagnostic criteria.

Data raise the question of whether cognitive and behavioral change should be included in ALS diagnostic criteria.

Cognitive deficits and behavioral symptoms that are specific to amyotrophic lateral sclerosis (ALS) occur more frequently as the disease progresses, according to research published online ahead of print September 12 in Neurology. Few patients are free of neuropsychologic impairment when they reach the final stage of the disease. It might be appropriate to include cognitive and behavioral change in the diagnostic criteria and future staging systems for ALS, said the authors.

In 2013, Elamin et al suggested that cognitive change in ALS may be associated with indirect measures of disease progression, such as total score on the ALS Functional Rating Scale-Revised. Christopher Crockford, PhD, a researcher at the University of Edinburgh, and colleagues sought to determine whether the cognitive and behavioral symptoms in ALS were more prevalent at more advanced stages of disease.

Christopher Crockford, PhD

The Role of Letter Fluency Impairment

They conducted a multicenter, cross-sectional, observational study that included 161 patients from Edinburgh, Dublin, and London with possible, probable, or definite ALS, according to revised El Escorial diagnostic criteria. The researchers also recruited 80 healthy, matched controls. Through interviews, Dr. Crockford and colleagues elicited demographic and clinical data. They measured participants’ clinical staging with the King’s Clinical Staging System and neuropsychologic status with the Edinburgh Cognitive and Behavioral ALS Screen (ECAS).

The investigators did not observe significant differences between the patient and control groups in background variables. Approximately 67% of patients with ALS were male, compared with 60% of controls. Mean age at testing was approximately 61 in both groups. Among patients with ALS, 40 were in Stage 1, 45 were in Stage 2, 22 were in Stage 3, and 54 were in Stage 4.

Compared with controls, patients with ALS had significantly worse cognitive performance on all domains of the ECAS except visuospatial functioning. Dr. Crockford’s group found a significant cross-sectional effect across disease stages for ALS-specific functions (eg, executive, language, and letter fluency) and ECAS total score. They did not find a similar effect for ALS-nonspecific functions (eg, memory and visuospatial). In addition, rates of ALS-specific impairment and behavioral change increased with increasing disease stage.

Letter fluency impairment may explain the relationship between cognitive function and disease stage, said the authors. They observed higher rates of all behavioral problems in later King’s stages. Bulbar signs were significantly related to ALS-specific scores, ECAS total score, and behavioral scores. Site of onset was not related to these scores, however.

Intervention programs to alleviate the effect of patients’ neuropsychologic impairment on caregivers may be appropriate, said the authors. “Furthermore, clinicians should be cognizant of current neuropsychologic status when prescribing life-prolonging interventions to patients and implement support structures for those with a neuropsychologic impairment,” they added.

Informing Patients and Caregivers

Although Dr. Crockford and colleagues focused on the behavioral and cognitive effects of ALS, the disease may affect mental health as well, said Paul Wicks, PhD, Vice President of Innovation at PatientsLikeMe in Cambridge, Massachusetts, and Steven M. Albert, PhD, Professor and Chair of Behavioral and Community Health Sciences at the University of Pittsburgh, in an accompanying editorial. The data show that the rates of major depression and depressed mood increase with increasing disease stage.

 

 

Drs. Wicks and Albert cited a survey in which 90% of patients and caregivers reported that their doctors had not told them that cognitive or psychologic symptoms can arise in ALS. “In our experience, colleagues report keeping the information from patients in order to spare them further distress,” they said. Yet most respondents to this survey reported that they would have liked to have been informed about these symptoms.

“Educating patients and caregivers that cognitive change is a part of ALS should be no different from similar discussions to be had in multiple sclerosis, Parkinson disease, and a range of other conditions,” said Drs. Wicks and Albert. “Keeping the truth from patients and caregivers is not protective; it is paternalistic, and it is time to stop. Only by facing up to the hard truth that one of the most dreaded conditions in medicine is even worse than we previously acknowledged can we take stock, marshal our resources, and make renewed plans to defeat our common enemy.”

Suggested Reading

Crockford C, Newton J, Lonergan K, et al. ALS-specific cognitive and behavior changes associated with advancing disease stage in ALS. Neurology. 2018 Sep 12 [Epub ahead of print].

Wicks P, Albert SM. It’s time to stop saying “the mind is unaffected” in ALS. Neurology. 2018 Sep 12 [Epub ahead of print].

Cognitive deficits and behavioral symptoms that are specific to amyotrophic lateral sclerosis (ALS) occur more frequently as the disease progresses, according to research published online ahead of print September 12 in Neurology. Few patients are free of neuropsychologic impairment when they reach the final stage of the disease. It might be appropriate to include cognitive and behavioral change in the diagnostic criteria and future staging systems for ALS, said the authors.

In 2013, Elamin et al suggested that cognitive change in ALS may be associated with indirect measures of disease progression, such as total score on the ALS Functional Rating Scale-Revised. Christopher Crockford, PhD, a researcher at the University of Edinburgh, and colleagues sought to determine whether the cognitive and behavioral symptoms in ALS were more prevalent at more advanced stages of disease.

Christopher Crockford, PhD

The Role of Letter Fluency Impairment

They conducted a multicenter, cross-sectional, observational study that included 161 patients from Edinburgh, Dublin, and London with possible, probable, or definite ALS, according to revised El Escorial diagnostic criteria. The researchers also recruited 80 healthy, matched controls. Through interviews, Dr. Crockford and colleagues elicited demographic and clinical data. They measured participants’ clinical staging with the King’s Clinical Staging System and neuropsychologic status with the Edinburgh Cognitive and Behavioral ALS Screen (ECAS).

The investigators did not observe significant differences between the patient and control groups in background variables. Approximately 67% of patients with ALS were male, compared with 60% of controls. Mean age at testing was approximately 61 in both groups. Among patients with ALS, 40 were in Stage 1, 45 were in Stage 2, 22 were in Stage 3, and 54 were in Stage 4.

Compared with controls, patients with ALS had significantly worse cognitive performance on all domains of the ECAS except visuospatial functioning. Dr. Crockford’s group found a significant cross-sectional effect across disease stages for ALS-specific functions (eg, executive, language, and letter fluency) and ECAS total score. They did not find a similar effect for ALS-nonspecific functions (eg, memory and visuospatial). In addition, rates of ALS-specific impairment and behavioral change increased with increasing disease stage.

Letter fluency impairment may explain the relationship between cognitive function and disease stage, said the authors. They observed higher rates of all behavioral problems in later King’s stages. Bulbar signs were significantly related to ALS-specific scores, ECAS total score, and behavioral scores. Site of onset was not related to these scores, however.

Intervention programs to alleviate the effect of patients’ neuropsychologic impairment on caregivers may be appropriate, said the authors. “Furthermore, clinicians should be cognizant of current neuropsychologic status when prescribing life-prolonging interventions to patients and implement support structures for those with a neuropsychologic impairment,” they added.

Informing Patients and Caregivers

Although Dr. Crockford and colleagues focused on the behavioral and cognitive effects of ALS, the disease may affect mental health as well, said Paul Wicks, PhD, Vice President of Innovation at PatientsLikeMe in Cambridge, Massachusetts, and Steven M. Albert, PhD, Professor and Chair of Behavioral and Community Health Sciences at the University of Pittsburgh, in an accompanying editorial. The data show that the rates of major depression and depressed mood increase with increasing disease stage.

 

 

Drs. Wicks and Albert cited a survey in which 90% of patients and caregivers reported that their doctors had not told them that cognitive or psychologic symptoms can arise in ALS. “In our experience, colleagues report keeping the information from patients in order to spare them further distress,” they said. Yet most respondents to this survey reported that they would have liked to have been informed about these symptoms.

“Educating patients and caregivers that cognitive change is a part of ALS should be no different from similar discussions to be had in multiple sclerosis, Parkinson disease, and a range of other conditions,” said Drs. Wicks and Albert. “Keeping the truth from patients and caregivers is not protective; it is paternalistic, and it is time to stop. Only by facing up to the hard truth that one of the most dreaded conditions in medicine is even worse than we previously acknowledged can we take stock, marshal our resources, and make renewed plans to defeat our common enemy.”

Suggested Reading

Crockford C, Newton J, Lonergan K, et al. ALS-specific cognitive and behavior changes associated with advancing disease stage in ALS. Neurology. 2018 Sep 12 [Epub ahead of print].

Wicks P, Albert SM. It’s time to stop saying “the mind is unaffected” in ALS. Neurology. 2018 Sep 12 [Epub ahead of print].

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FDA approves Sympazan for Lennox-Gastaut syndrome

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The Food and Drug Administration has approved Sympazan (clobazam) oral film for adjunctive treatment of Lennox-Gastaut syndrome (LGS) in patients aged 2 years and older, according to a release from its developer. Final approval came after the orphan drug designation period for the previously marketed formulation, Onfi, came to an end in October.

LGS is a severe form of epilepsy; it can present with multiple types of seizures, as well as intellectual disabilities. Patients with LGS can have difficulty swallowing tablets or large volumes of oral suspension – which was previously the only way clobazam was delivered – because of physical limitations or behavioral or compliance issues. According to the press release from Aquestive Therapeutics, the Sympazan oral film might be able to get around those difficulties and reduce care burdens, especially with patients who are resistant to or even combative about treatment.

The approval is based on multiple pharmacokinetic studies that altogether showed that the oral film is bioequivalent to clobazam tablets and has a similar safety profile.

In a phase 3 study of 238 patients with LGS, clobazam tablets were shown to reduce drop seizures (those that involved falls) by 41% at low doses and by 68% at high doses versus a reduction of 12% seen with placebo (P less than .05 for all doses vs. placebo).

There is a risk of profound sedation when clobazam is used alongside benzodiazepines; there is also a risk of sedation and somnolence if it is used concomitantly with alcohol or other CNS depressants. Other risks associated with clobazam include suicidal ideation and behavior, serious dermatologic reactions, and physical and psychological dependence. The most common adverse reactions included constipation, pyrexia, lethargy, and drooling.

Full prescribing information can be found on the FDA website.

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The Food and Drug Administration has approved Sympazan (clobazam) oral film for adjunctive treatment of Lennox-Gastaut syndrome (LGS) in patients aged 2 years and older, according to a release from its developer. Final approval came after the orphan drug designation period for the previously marketed formulation, Onfi, came to an end in October.

LGS is a severe form of epilepsy; it can present with multiple types of seizures, as well as intellectual disabilities. Patients with LGS can have difficulty swallowing tablets or large volumes of oral suspension – which was previously the only way clobazam was delivered – because of physical limitations or behavioral or compliance issues. According to the press release from Aquestive Therapeutics, the Sympazan oral film might be able to get around those difficulties and reduce care burdens, especially with patients who are resistant to or even combative about treatment.

The approval is based on multiple pharmacokinetic studies that altogether showed that the oral film is bioequivalent to clobazam tablets and has a similar safety profile.

In a phase 3 study of 238 patients with LGS, clobazam tablets were shown to reduce drop seizures (those that involved falls) by 41% at low doses and by 68% at high doses versus a reduction of 12% seen with placebo (P less than .05 for all doses vs. placebo).

There is a risk of profound sedation when clobazam is used alongside benzodiazepines; there is also a risk of sedation and somnolence if it is used concomitantly with alcohol or other CNS depressants. Other risks associated with clobazam include suicidal ideation and behavior, serious dermatologic reactions, and physical and psychological dependence. The most common adverse reactions included constipation, pyrexia, lethargy, and drooling.

Full prescribing information can be found on the FDA website.



The Food and Drug Administration has approved Sympazan (clobazam) oral film for adjunctive treatment of Lennox-Gastaut syndrome (LGS) in patients aged 2 years and older, according to a release from its developer. Final approval came after the orphan drug designation period for the previously marketed formulation, Onfi, came to an end in October.

LGS is a severe form of epilepsy; it can present with multiple types of seizures, as well as intellectual disabilities. Patients with LGS can have difficulty swallowing tablets or large volumes of oral suspension – which was previously the only way clobazam was delivered – because of physical limitations or behavioral or compliance issues. According to the press release from Aquestive Therapeutics, the Sympazan oral film might be able to get around those difficulties and reduce care burdens, especially with patients who are resistant to or even combative about treatment.

The approval is based on multiple pharmacokinetic studies that altogether showed that the oral film is bioequivalent to clobazam tablets and has a similar safety profile.

In a phase 3 study of 238 patients with LGS, clobazam tablets were shown to reduce drop seizures (those that involved falls) by 41% at low doses and by 68% at high doses versus a reduction of 12% seen with placebo (P less than .05 for all doses vs. placebo).

There is a risk of profound sedation when clobazam is used alongside benzodiazepines; there is also a risk of sedation and somnolence if it is used concomitantly with alcohol or other CNS depressants. Other risks associated with clobazam include suicidal ideation and behavior, serious dermatologic reactions, and physical and psychological dependence. The most common adverse reactions included constipation, pyrexia, lethargy, and drooling.

Full prescribing information can be found on the FDA website.

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Predicting Disability Following Clinically Isolated Syndrome

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Modifiable risk factors modulate the potential for disability.

BERLIN—Smoking and low vitamin D levels are key modifiable prognostic factors that show a significant interaction with risk of Expanded Disability Status Scale (EDSS) progression in patients with clinically isolated syndrome (CIS), according to a study presented at ECTRIMS 2018. This finding suggests potential preventive strategies for avoiding disability, said Susana Otero-Romero, MD, PhD, an epidemiologist at the Multiple Sclerosis Center of Catalonia (CEMCAT) at University Hospital Vall d’Hebron in Barcelona, and her research colleagues.

A dynamic model for predicting long-term prognosis incorporating age, sex, topography of CIS, oligoclonal bands, and number of T2 lesions was designed by Dr. Otero-Romero and colleagues. They then sought to include modifiable environmental factors such as vitamin D and cotinine serum levels (as a surrogate for smoking status) to their modeling strategy for predicting long-term prognosis.

From 1995 to 2016, the researchers prospectively recruited 1,088 patients with CIS for clinical assessment and brain MRI follow-up. Baseline hazard for EDSS 3.0 was calculated after fitting several parametric models (Weibull, generalized gamma) for a linear combination of baseline domains, including: age, sex, topography, oligoclonal bands, and baseline T2 lesions. A recursive partitioning regression tree (RPART) method was used to stratify patients in risk groups according to their predicted median time to EDSS 3.0. This prognostic model was further updated by adding vitamin D deficiency (n = 472; cutoff, 8 ng/mL), smoking (n = 435; cotinine cutoff, 14 ng/mL), and their interactions with risk groups. Harrell C statistic was used to evaluate the performance of these models.

The predictive model is based on 1,062 patients with more than one year of follow-up. After fitting several models, a final Weibull (proportional hazard) model was selected. RPART allowed patients to be stratified in three groups: low risk (n = 442; hazard ratio [HR], 1.0 reference), medium risk (n = 561; HR, 3.0), and high risk (n = 51; HR, 9.6) with a Harrell C of 0.65. An interaction was observed for vitamin D deficiency and risk group. Vitamin D deficiency increased the risk for EDSS progression. Patients with vitamin D deficiency with low risk moved to the medium-risk group, and patients with medium risk moved to the high-risk group. In patients with high risk at baseline, the impact of vitamin D deficiency was minor. Overall Harrell C increased from 0.65 to 0.69.

A similar interaction was observed for smoking and risk group. High cotinine levels increased the risk for EDSS progression. Patients with low risk moved to the medium-risk group, and patients with medium risk moved to the high-risk group. For the high-risk group, adding smoking status raised hazard ratios from 13.8 to 64.2. Harrell C improved from 0.68 to 0.73.

This study was financed with grants from the Spanish Ministry of Economy and Competitiveness, the Fondo de Investigación Sanitaria, and the Instituto de Salud Carlos III. It also was supported by a grant from Genzyme.

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Modifiable risk factors modulate the potential for disability.

Modifiable risk factors modulate the potential for disability.

BERLIN—Smoking and low vitamin D levels are key modifiable prognostic factors that show a significant interaction with risk of Expanded Disability Status Scale (EDSS) progression in patients with clinically isolated syndrome (CIS), according to a study presented at ECTRIMS 2018. This finding suggests potential preventive strategies for avoiding disability, said Susana Otero-Romero, MD, PhD, an epidemiologist at the Multiple Sclerosis Center of Catalonia (CEMCAT) at University Hospital Vall d’Hebron in Barcelona, and her research colleagues.

A dynamic model for predicting long-term prognosis incorporating age, sex, topography of CIS, oligoclonal bands, and number of T2 lesions was designed by Dr. Otero-Romero and colleagues. They then sought to include modifiable environmental factors such as vitamin D and cotinine serum levels (as a surrogate for smoking status) to their modeling strategy for predicting long-term prognosis.

From 1995 to 2016, the researchers prospectively recruited 1,088 patients with CIS for clinical assessment and brain MRI follow-up. Baseline hazard for EDSS 3.0 was calculated after fitting several parametric models (Weibull, generalized gamma) for a linear combination of baseline domains, including: age, sex, topography, oligoclonal bands, and baseline T2 lesions. A recursive partitioning regression tree (RPART) method was used to stratify patients in risk groups according to their predicted median time to EDSS 3.0. This prognostic model was further updated by adding vitamin D deficiency (n = 472; cutoff, 8 ng/mL), smoking (n = 435; cotinine cutoff, 14 ng/mL), and their interactions with risk groups. Harrell C statistic was used to evaluate the performance of these models.

The predictive model is based on 1,062 patients with more than one year of follow-up. After fitting several models, a final Weibull (proportional hazard) model was selected. RPART allowed patients to be stratified in three groups: low risk (n = 442; hazard ratio [HR], 1.0 reference), medium risk (n = 561; HR, 3.0), and high risk (n = 51; HR, 9.6) with a Harrell C of 0.65. An interaction was observed for vitamin D deficiency and risk group. Vitamin D deficiency increased the risk for EDSS progression. Patients with vitamin D deficiency with low risk moved to the medium-risk group, and patients with medium risk moved to the high-risk group. In patients with high risk at baseline, the impact of vitamin D deficiency was minor. Overall Harrell C increased from 0.65 to 0.69.

A similar interaction was observed for smoking and risk group. High cotinine levels increased the risk for EDSS progression. Patients with low risk moved to the medium-risk group, and patients with medium risk moved to the high-risk group. For the high-risk group, adding smoking status raised hazard ratios from 13.8 to 64.2. Harrell C improved from 0.68 to 0.73.

This study was financed with grants from the Spanish Ministry of Economy and Competitiveness, the Fondo de Investigación Sanitaria, and the Instituto de Salud Carlos III. It also was supported by a grant from Genzyme.

BERLIN—Smoking and low vitamin D levels are key modifiable prognostic factors that show a significant interaction with risk of Expanded Disability Status Scale (EDSS) progression in patients with clinically isolated syndrome (CIS), according to a study presented at ECTRIMS 2018. This finding suggests potential preventive strategies for avoiding disability, said Susana Otero-Romero, MD, PhD, an epidemiologist at the Multiple Sclerosis Center of Catalonia (CEMCAT) at University Hospital Vall d’Hebron in Barcelona, and her research colleagues.

A dynamic model for predicting long-term prognosis incorporating age, sex, topography of CIS, oligoclonal bands, and number of T2 lesions was designed by Dr. Otero-Romero and colleagues. They then sought to include modifiable environmental factors such as vitamin D and cotinine serum levels (as a surrogate for smoking status) to their modeling strategy for predicting long-term prognosis.

From 1995 to 2016, the researchers prospectively recruited 1,088 patients with CIS for clinical assessment and brain MRI follow-up. Baseline hazard for EDSS 3.0 was calculated after fitting several parametric models (Weibull, generalized gamma) for a linear combination of baseline domains, including: age, sex, topography, oligoclonal bands, and baseline T2 lesions. A recursive partitioning regression tree (RPART) method was used to stratify patients in risk groups according to their predicted median time to EDSS 3.0. This prognostic model was further updated by adding vitamin D deficiency (n = 472; cutoff, 8 ng/mL), smoking (n = 435; cotinine cutoff, 14 ng/mL), and their interactions with risk groups. Harrell C statistic was used to evaluate the performance of these models.

The predictive model is based on 1,062 patients with more than one year of follow-up. After fitting several models, a final Weibull (proportional hazard) model was selected. RPART allowed patients to be stratified in three groups: low risk (n = 442; hazard ratio [HR], 1.0 reference), medium risk (n = 561; HR, 3.0), and high risk (n = 51; HR, 9.6) with a Harrell C of 0.65. An interaction was observed for vitamin D deficiency and risk group. Vitamin D deficiency increased the risk for EDSS progression. Patients with vitamin D deficiency with low risk moved to the medium-risk group, and patients with medium risk moved to the high-risk group. In patients with high risk at baseline, the impact of vitamin D deficiency was minor. Overall Harrell C increased from 0.65 to 0.69.

A similar interaction was observed for smoking and risk group. High cotinine levels increased the risk for EDSS progression. Patients with low risk moved to the medium-risk group, and patients with medium risk moved to the high-risk group. For the high-risk group, adding smoking status raised hazard ratios from 13.8 to 64.2. Harrell C improved from 0.68 to 0.73.

This study was financed with grants from the Spanish Ministry of Economy and Competitiveness, the Fondo de Investigación Sanitaria, and the Instituto de Salud Carlos III. It also was supported by a grant from Genzyme.

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Sandoz halts pursuit of U.S. approval for rituximab biosimilar

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Sandoz has decided not to pursue U.S. approval for its rituximab product (GP2013), a proposed biosimilar of Rituxan.

Sandoz, a division of Novartis, was seeking Food and Drug Administration approval of GP2013 for all the same indications as the reference product – B-cell non-Hodgkin lymphoma, chronic lymphocytic leukemia, rheumatoid arthritis, granulomatosis with polyangiitis, microscopic polyangiitis, and pemphigus vulgaris.

GP2013 already is approved in the European Union and elsewhere.

The FDA had accepted the biologics license application (BLA) for GP2013 in September 2017. In May 2018, the agency issued a complete response letter saying it could not approve GP2013. The agency also requested additional information to complement the BLA submission.

At the time of the complete response letter, Sandoz said it was still committed to bringing GP2013 to the U.S. market.



“We appreciate the important conversations with the FDA, which have provided specific requirements for our potential U.S. biosimilar rituximab but believe the patient and marketplace needs in the U.S. will be satisfied before we can generate the data required,” Stefan Hendriks, global head of biopharmaceuticals at Sandoz, said in a statement.

“We are disappointed to have to make this decision and stand behind the safety, efficacy, and quality of our medicine, which met the stringent criteria for approval in the European Union, Switzerland, Japan, New Zealand, and Australia.”

The BLA for GP2013 was supported, in part, by results from the ASSIST-FL trial, in which researchers compared GP2013 with the reference product (Lancet Haematol. 2017 Aug;4[8]:e350-61).

The phase 3 trial included adults with previously untreated, advanced-stage follicular lymphoma. Patients received eight cycles of cyclophosphamide, vincristine, and prednisone with either GP2013 or reference rituximab. Responders then received GP2013 or rituximab monotherapy as maintenance for up to 2 years.

At a median follow-up of 11.6 months, the overall response rate was 87% in the GP2013 arm and 88% in the rituximab arm.

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Sandoz has decided not to pursue U.S. approval for its rituximab product (GP2013), a proposed biosimilar of Rituxan.

Sandoz, a division of Novartis, was seeking Food and Drug Administration approval of GP2013 for all the same indications as the reference product – B-cell non-Hodgkin lymphoma, chronic lymphocytic leukemia, rheumatoid arthritis, granulomatosis with polyangiitis, microscopic polyangiitis, and pemphigus vulgaris.

GP2013 already is approved in the European Union and elsewhere.

The FDA had accepted the biologics license application (BLA) for GP2013 in September 2017. In May 2018, the agency issued a complete response letter saying it could not approve GP2013. The agency also requested additional information to complement the BLA submission.

At the time of the complete response letter, Sandoz said it was still committed to bringing GP2013 to the U.S. market.



“We appreciate the important conversations with the FDA, which have provided specific requirements for our potential U.S. biosimilar rituximab but believe the patient and marketplace needs in the U.S. will be satisfied before we can generate the data required,” Stefan Hendriks, global head of biopharmaceuticals at Sandoz, said in a statement.

“We are disappointed to have to make this decision and stand behind the safety, efficacy, and quality of our medicine, which met the stringent criteria for approval in the European Union, Switzerland, Japan, New Zealand, and Australia.”

The BLA for GP2013 was supported, in part, by results from the ASSIST-FL trial, in which researchers compared GP2013 with the reference product (Lancet Haematol. 2017 Aug;4[8]:e350-61).

The phase 3 trial included adults with previously untreated, advanced-stage follicular lymphoma. Patients received eight cycles of cyclophosphamide, vincristine, and prednisone with either GP2013 or reference rituximab. Responders then received GP2013 or rituximab monotherapy as maintenance for up to 2 years.

At a median follow-up of 11.6 months, the overall response rate was 87% in the GP2013 arm and 88% in the rituximab arm.

Sandoz has decided not to pursue U.S. approval for its rituximab product (GP2013), a proposed biosimilar of Rituxan.

Sandoz, a division of Novartis, was seeking Food and Drug Administration approval of GP2013 for all the same indications as the reference product – B-cell non-Hodgkin lymphoma, chronic lymphocytic leukemia, rheumatoid arthritis, granulomatosis with polyangiitis, microscopic polyangiitis, and pemphigus vulgaris.

GP2013 already is approved in the European Union and elsewhere.

The FDA had accepted the biologics license application (BLA) for GP2013 in September 2017. In May 2018, the agency issued a complete response letter saying it could not approve GP2013. The agency also requested additional information to complement the BLA submission.

At the time of the complete response letter, Sandoz said it was still committed to bringing GP2013 to the U.S. market.



“We appreciate the important conversations with the FDA, which have provided specific requirements for our potential U.S. biosimilar rituximab but believe the patient and marketplace needs in the U.S. will be satisfied before we can generate the data required,” Stefan Hendriks, global head of biopharmaceuticals at Sandoz, said in a statement.

“We are disappointed to have to make this decision and stand behind the safety, efficacy, and quality of our medicine, which met the stringent criteria for approval in the European Union, Switzerland, Japan, New Zealand, and Australia.”

The BLA for GP2013 was supported, in part, by results from the ASSIST-FL trial, in which researchers compared GP2013 with the reference product (Lancet Haematol. 2017 Aug;4[8]:e350-61).

The phase 3 trial included adults with previously untreated, advanced-stage follicular lymphoma. Patients received eight cycles of cyclophosphamide, vincristine, and prednisone with either GP2013 or reference rituximab. Responders then received GP2013 or rituximab monotherapy as maintenance for up to 2 years.

At a median follow-up of 11.6 months, the overall response rate was 87% in the GP2013 arm and 88% in the rituximab arm.

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Long-Term Follow-Up of Ocrelizumab-Treated Patient With Relapsing MS

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Five-year follow-up data show low levels of disability progression.

BERLIN—Switching from interferon beta-1a to ocrelizumab after two years at the start of the OPERA I and OPERA II open-label extension period was associated with a rapid reduction in annualized release rate, according to a report presented at ECTRIMS 2018. “Both patients who continued treatment with ocrelizumab as well as those who were switched from interferon beta-1a to ocrelizumab maintained their robust reduction in annualized relapse rate through the three-year follow-up of the open-label extension period,” said lead author Stephen L. Hauser, MD, Director of the UCSF Weill Institute for Neurosciences, University of California, San Francisco, and colleagues.

Stephen L. Hauser, MD

“After five years of follow-up, the proportion of patients with disability progression was lower in patients who initiated ocrelizumab treatment earlier, compared with patients who received initial interferon treatment before switching to ocrelizumab, showing that patients who initiated ocrelizumab two years earlier accrued significant and sustained reductions in disability progression compared with patients switching from interferon therapy.”

The efficacy and safety of ocrelizumab in relapsing multiple sclerosis (MS) were demonstrated in the 96-week double-blind control period of OPERA I and OPERA II, and results for the two-year follow-up of the pooled OPERA I and OPERA II open-label extension period have previously been reported. For this study, Dr. Hauser and colleagues sought to assess the efficacy of switching to or maintaining ocrelizumab therapy on clinical measures of disease activity and progression after three years of follow-up in the open-label extension period of the OPERA I and OPERA II phase III trials in relapsing MS.

At the start of the open-label extension period, patients continued ocrelizumab therapy or were switched from interferon beta-1a to ocrelizumab. The researchers analyzed adjusted annualized relapse rate (ARR), time to onset of 24-week confirmed disability progression, and change in adjusted mean Expanded Disability Status Scale (EDSS) score from baseline.

Overall, 88.6% of patients who entered the open-label extension completed year three of follow-up. Among patients who switched therapy, annualized release rate decreased from 0.20 in the year preswitch to 0.10, 0.08, and 0.07 at years one, two, and three postswitch. Those patients who continued on ocrelizumab maintained a low annualized relapse rate through the year prior to the open-label extension and the three years of the open-label extension period (0.13, 0.11, 0.08, and 0.07). In addition, those patients who continued on ocrelizumab versus those who switched therapy had lower proportions of patients with 24-week confirmed disability progression in the year preswitch and years one, two, and three of the open-label extension period (7.7%/12.0%, 10.1%/15.6%, 13.9%/18.1%, and 16.1%/21.3%).

This study was sponsored by F. Hoffmann-La Roche, and writing and editorial assistance was provided by Articulate Science, UK.

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Five-year follow-up data show low levels of disability progression.

Five-year follow-up data show low levels of disability progression.

BERLIN—Switching from interferon beta-1a to ocrelizumab after two years at the start of the OPERA I and OPERA II open-label extension period was associated with a rapid reduction in annualized release rate, according to a report presented at ECTRIMS 2018. “Both patients who continued treatment with ocrelizumab as well as those who were switched from interferon beta-1a to ocrelizumab maintained their robust reduction in annualized relapse rate through the three-year follow-up of the open-label extension period,” said lead author Stephen L. Hauser, MD, Director of the UCSF Weill Institute for Neurosciences, University of California, San Francisco, and colleagues.

Stephen L. Hauser, MD

“After five years of follow-up, the proportion of patients with disability progression was lower in patients who initiated ocrelizumab treatment earlier, compared with patients who received initial interferon treatment before switching to ocrelizumab, showing that patients who initiated ocrelizumab two years earlier accrued significant and sustained reductions in disability progression compared with patients switching from interferon therapy.”

The efficacy and safety of ocrelizumab in relapsing multiple sclerosis (MS) were demonstrated in the 96-week double-blind control period of OPERA I and OPERA II, and results for the two-year follow-up of the pooled OPERA I and OPERA II open-label extension period have previously been reported. For this study, Dr. Hauser and colleagues sought to assess the efficacy of switching to or maintaining ocrelizumab therapy on clinical measures of disease activity and progression after three years of follow-up in the open-label extension period of the OPERA I and OPERA II phase III trials in relapsing MS.

At the start of the open-label extension period, patients continued ocrelizumab therapy or were switched from interferon beta-1a to ocrelizumab. The researchers analyzed adjusted annualized relapse rate (ARR), time to onset of 24-week confirmed disability progression, and change in adjusted mean Expanded Disability Status Scale (EDSS) score from baseline.

Overall, 88.6% of patients who entered the open-label extension completed year three of follow-up. Among patients who switched therapy, annualized release rate decreased from 0.20 in the year preswitch to 0.10, 0.08, and 0.07 at years one, two, and three postswitch. Those patients who continued on ocrelizumab maintained a low annualized relapse rate through the year prior to the open-label extension and the three years of the open-label extension period (0.13, 0.11, 0.08, and 0.07). In addition, those patients who continued on ocrelizumab versus those who switched therapy had lower proportions of patients with 24-week confirmed disability progression in the year preswitch and years one, two, and three of the open-label extension period (7.7%/12.0%, 10.1%/15.6%, 13.9%/18.1%, and 16.1%/21.3%).

This study was sponsored by F. Hoffmann-La Roche, and writing and editorial assistance was provided by Articulate Science, UK.

BERLIN—Switching from interferon beta-1a to ocrelizumab after two years at the start of the OPERA I and OPERA II open-label extension period was associated with a rapid reduction in annualized release rate, according to a report presented at ECTRIMS 2018. “Both patients who continued treatment with ocrelizumab as well as those who were switched from interferon beta-1a to ocrelizumab maintained their robust reduction in annualized relapse rate through the three-year follow-up of the open-label extension period,” said lead author Stephen L. Hauser, MD, Director of the UCSF Weill Institute for Neurosciences, University of California, San Francisco, and colleagues.

Stephen L. Hauser, MD

“After five years of follow-up, the proportion of patients with disability progression was lower in patients who initiated ocrelizumab treatment earlier, compared with patients who received initial interferon treatment before switching to ocrelizumab, showing that patients who initiated ocrelizumab two years earlier accrued significant and sustained reductions in disability progression compared with patients switching from interferon therapy.”

The efficacy and safety of ocrelizumab in relapsing multiple sclerosis (MS) were demonstrated in the 96-week double-blind control period of OPERA I and OPERA II, and results for the two-year follow-up of the pooled OPERA I and OPERA II open-label extension period have previously been reported. For this study, Dr. Hauser and colleagues sought to assess the efficacy of switching to or maintaining ocrelizumab therapy on clinical measures of disease activity and progression after three years of follow-up in the open-label extension period of the OPERA I and OPERA II phase III trials in relapsing MS.

At the start of the open-label extension period, patients continued ocrelizumab therapy or were switched from interferon beta-1a to ocrelizumab. The researchers analyzed adjusted annualized relapse rate (ARR), time to onset of 24-week confirmed disability progression, and change in adjusted mean Expanded Disability Status Scale (EDSS) score from baseline.

Overall, 88.6% of patients who entered the open-label extension completed year three of follow-up. Among patients who switched therapy, annualized release rate decreased from 0.20 in the year preswitch to 0.10, 0.08, and 0.07 at years one, two, and three postswitch. Those patients who continued on ocrelizumab maintained a low annualized relapse rate through the year prior to the open-label extension and the three years of the open-label extension period (0.13, 0.11, 0.08, and 0.07). In addition, those patients who continued on ocrelizumab versus those who switched therapy had lower proportions of patients with 24-week confirmed disability progression in the year preswitch and years one, two, and three of the open-label extension period (7.7%/12.0%, 10.1%/15.6%, 13.9%/18.1%, and 16.1%/21.3%).

This study was sponsored by F. Hoffmann-La Roche, and writing and editorial assistance was provided by Articulate Science, UK.

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Ongoing Neuronal Loss Is Greater in Secondary Progressive MS Than Primary Progressive MS

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Serum levels of neurofilament light chain may be a prognostic biomarker of brain atrophy.

BERLIN—Levels of neurofilament light chain (NfL) indicate that patients with secondary progressive multiple sclerosis (MS) have more ongoing neuronal loss than patients with primary progressive MS of comparable age, both in the presence and in absence of gadolinium enhancing lesions, according to research presented at ECTRIMS 2018. In secondary progressive MS and primary progressive MS, NfL may serve as a prognostic marker of brain atrophy, said the investigators.

NfL is considered a blood biomarker for monitoring neuronal damage, disease activity, and treatment response in MS. Most studies of blood NfL have focused on patients with relapsing-remitting MS, and little is known about blood NfL levels in patients with progressive MS.

Jens Kuhle, MD, PhD


Jens Kuhle, MD, PhD, Head of the MS Center at University Hospital Basel in Switzerland, and colleagues, compared baseline blood NfL levels and assessed the prognostic potential of NfL for brain atrophy in patients with primary progressive MS and secondary progressive MS in placebo-controlled phase III trials of fingolimod (ie, INFORMS) and siponimod (ie, EXPAND).

The researchers retrospectively analyzed blood NfL levels in 1,452 patients with secondary progressive MS (mean age, 48.2; Expanded Disability Status Scale [EDSS], 5.4) and 378 patients with primary progressive MS (mean age, 48.7; EDSS, 4.6). They quantified NfL levels at baseline using single molecule array technology and grouped them into the categories of low (< 30 pg/mL), medium (30–60 pg/mL), and high (> 60 pg/mL). High and low baseline NfL categories were compared using Chi-square and Wilcoxon rank sum tests. Dr. Kuhle and colleagues examined the association of baseline NfL levels with MRI parameters by Spearman rank correlation (gadolinium enhancing lesion count, T2 lesion volume) and the Jonckheere Terpstra test (brain volume change).

NfL levels at baseline were higher in patients with secondary progressive MS than in patients with primary progressive MS (32.1 pg/mL vs 22.0 pg/mL). A similar trend was observed when patients of the same age were compared. Patients with secondary progressive MS had higher NfL levels than those with primary progressive MS.

Similarly, patients with no gadolinium enhancing lesions at baseline had NfL levels of 29.2 pg/mL and 21.0 pg/mL in secondary progressive MS and primary progressive MS, respectively, while patients with gadolinium enhancing lesions had NfL levels of 45.0 pg/mL in secondary progressive MS and 34.0 pg/mL in primary progressive MS. The gadolinium enhancing lesion count and T2 lesion volume at baseline correlated best with baseline NfL. In secondary progressive MS and primary progressive MS, high NfL at baseline was associated with higher percentage of brain volume loss at Month 12 (high NfL vs low NfL: −0.8% vs −0.2% in secondary progressive MS and −0.8% vs −0.4% in primary progressive MS) and at Month 24 (−1.5% vs −0.5% in secondary progressive MS and −1.9% vs −0.8% in primary progressive MS).

The study was funded by Novartis Pharma.
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Serum levels of neurofilament light chain may be a prognostic biomarker of brain atrophy.

Serum levels of neurofilament light chain may be a prognostic biomarker of brain atrophy.

BERLIN—Levels of neurofilament light chain (NfL) indicate that patients with secondary progressive multiple sclerosis (MS) have more ongoing neuronal loss than patients with primary progressive MS of comparable age, both in the presence and in absence of gadolinium enhancing lesions, according to research presented at ECTRIMS 2018. In secondary progressive MS and primary progressive MS, NfL may serve as a prognostic marker of brain atrophy, said the investigators.

NfL is considered a blood biomarker for monitoring neuronal damage, disease activity, and treatment response in MS. Most studies of blood NfL have focused on patients with relapsing-remitting MS, and little is known about blood NfL levels in patients with progressive MS.

Jens Kuhle, MD, PhD


Jens Kuhle, MD, PhD, Head of the MS Center at University Hospital Basel in Switzerland, and colleagues, compared baseline blood NfL levels and assessed the prognostic potential of NfL for brain atrophy in patients with primary progressive MS and secondary progressive MS in placebo-controlled phase III trials of fingolimod (ie, INFORMS) and siponimod (ie, EXPAND).

The researchers retrospectively analyzed blood NfL levels in 1,452 patients with secondary progressive MS (mean age, 48.2; Expanded Disability Status Scale [EDSS], 5.4) and 378 patients with primary progressive MS (mean age, 48.7; EDSS, 4.6). They quantified NfL levels at baseline using single molecule array technology and grouped them into the categories of low (< 30 pg/mL), medium (30–60 pg/mL), and high (> 60 pg/mL). High and low baseline NfL categories were compared using Chi-square and Wilcoxon rank sum tests. Dr. Kuhle and colleagues examined the association of baseline NfL levels with MRI parameters by Spearman rank correlation (gadolinium enhancing lesion count, T2 lesion volume) and the Jonckheere Terpstra test (brain volume change).

NfL levels at baseline were higher in patients with secondary progressive MS than in patients with primary progressive MS (32.1 pg/mL vs 22.0 pg/mL). A similar trend was observed when patients of the same age were compared. Patients with secondary progressive MS had higher NfL levels than those with primary progressive MS.

Similarly, patients with no gadolinium enhancing lesions at baseline had NfL levels of 29.2 pg/mL and 21.0 pg/mL in secondary progressive MS and primary progressive MS, respectively, while patients with gadolinium enhancing lesions had NfL levels of 45.0 pg/mL in secondary progressive MS and 34.0 pg/mL in primary progressive MS. The gadolinium enhancing lesion count and T2 lesion volume at baseline correlated best with baseline NfL. In secondary progressive MS and primary progressive MS, high NfL at baseline was associated with higher percentage of brain volume loss at Month 12 (high NfL vs low NfL: −0.8% vs −0.2% in secondary progressive MS and −0.8% vs −0.4% in primary progressive MS) and at Month 24 (−1.5% vs −0.5% in secondary progressive MS and −1.9% vs −0.8% in primary progressive MS).

The study was funded by Novartis Pharma.

BERLIN—Levels of neurofilament light chain (NfL) indicate that patients with secondary progressive multiple sclerosis (MS) have more ongoing neuronal loss than patients with primary progressive MS of comparable age, both in the presence and in absence of gadolinium enhancing lesions, according to research presented at ECTRIMS 2018. In secondary progressive MS and primary progressive MS, NfL may serve as a prognostic marker of brain atrophy, said the investigators.

NfL is considered a blood biomarker for monitoring neuronal damage, disease activity, and treatment response in MS. Most studies of blood NfL have focused on patients with relapsing-remitting MS, and little is known about blood NfL levels in patients with progressive MS.

Jens Kuhle, MD, PhD


Jens Kuhle, MD, PhD, Head of the MS Center at University Hospital Basel in Switzerland, and colleagues, compared baseline blood NfL levels and assessed the prognostic potential of NfL for brain atrophy in patients with primary progressive MS and secondary progressive MS in placebo-controlled phase III trials of fingolimod (ie, INFORMS) and siponimod (ie, EXPAND).

The researchers retrospectively analyzed blood NfL levels in 1,452 patients with secondary progressive MS (mean age, 48.2; Expanded Disability Status Scale [EDSS], 5.4) and 378 patients with primary progressive MS (mean age, 48.7; EDSS, 4.6). They quantified NfL levels at baseline using single molecule array technology and grouped them into the categories of low (< 30 pg/mL), medium (30–60 pg/mL), and high (> 60 pg/mL). High and low baseline NfL categories were compared using Chi-square and Wilcoxon rank sum tests. Dr. Kuhle and colleagues examined the association of baseline NfL levels with MRI parameters by Spearman rank correlation (gadolinium enhancing lesion count, T2 lesion volume) and the Jonckheere Terpstra test (brain volume change).

NfL levels at baseline were higher in patients with secondary progressive MS than in patients with primary progressive MS (32.1 pg/mL vs 22.0 pg/mL). A similar trend was observed when patients of the same age were compared. Patients with secondary progressive MS had higher NfL levels than those with primary progressive MS.

Similarly, patients with no gadolinium enhancing lesions at baseline had NfL levels of 29.2 pg/mL and 21.0 pg/mL in secondary progressive MS and primary progressive MS, respectively, while patients with gadolinium enhancing lesions had NfL levels of 45.0 pg/mL in secondary progressive MS and 34.0 pg/mL in primary progressive MS. The gadolinium enhancing lesion count and T2 lesion volume at baseline correlated best with baseline NfL. In secondary progressive MS and primary progressive MS, high NfL at baseline was associated with higher percentage of brain volume loss at Month 12 (high NfL vs low NfL: −0.8% vs −0.2% in secondary progressive MS and −0.8% vs −0.4% in primary progressive MS) and at Month 24 (−1.5% vs −0.5% in secondary progressive MS and −1.9% vs −0.8% in primary progressive MS).

The study was funded by Novartis Pharma.
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Vitamin D Augments Glucocorticoid Efficacy

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The vitamin enhances steroid efficacy via inhibition of mTORc1.

BERLIN—Vitamin D increases the therapeutic effects of glucocorticoids via an mTORc1–dependent upregulation of the glucocorticoid receptor, according to a report at ECTRIMS 2018. “These data suggest that efficacy of glucocorticoids in the treatment of multiple sclerosis (MS) relapses could be improved by mTORc1 inhibition,” said lead author Maud Bagnoud, a doctoral candidate from the Department for Biomedical Research at the University of Bern in Switzerland, and colleagues.

Glucocorticoids are the mainstay in the treatment of acute MS relapses. Still, disability increases in more than 40% of patients. Ms. Bagnoud and colleagues investigated the potential of vitamin D to enhance steroid efficacy for MS relapse therapy and the mechanisms involved.

The researchers analyzed vitamin D levels using an immunoassay in patients with stable MS (n = 56), patients with relapsing glucocorticoid-responsive MS (n = 30), and patients with relapsing glucocorticoid-resistant MS (n = 24). Gene expression of human T cells (microarrays, n = 112) were correlated with 25(OH)D3 levels. Glucocorticoid receptor protein was measured using ELISA. T cell apoptosis was analyzed by FACS. Myelin oligodendrocyte glycoprotein (MOG35-55) experimental autoimmune encephalomyelitis (EAE) was performed in wild type and knockout mice with T cell specific deficiency for glucocorticoid receptor/mTORc1. The investigators analyzed the relevance of the JNK-pathway in human T cells using a competitive JNK-inhibitor (SP600125).

Patients with glucocorticoid-resistant MS had a decreased vitamin D serum level, compared with patients with glucocorticoid-responsive MS or stable MS. This decreased level of vitamin D was associated with reduced expression of the glucocorticoid receptor in T cells. In vitro, vitamin D increased the concentration of glucocorticoid receptor protein in T cells in a dose-dependent manner. Focusing on T cells donated from patients with MS during glucocorticoid-resistant relapse, this glucocorticoid receptor upregulation by vitamin D increased T cell apoptosis by approximately 10%, if treated with vitamin D and glucocorticoids, compared with glucocorticoid monotherapy. Combination therapy ameliorated EAE disease course more efficiently than monotherapies did. This effect was dependent on the presence of the glucocorticoid receptor in T cells.

On a molecular level, vitamin D inhibited mTORc1 signal transduction in murine T cells in vitro. Furthermore, hypovitaminosis D was associated with reduced expression of the archetype mTORc1 inhibitor tuberous sclerosis complex 1 in human T cells. The upregulation of the glucocorticoid receptor by vitamin D as well as the functional vitamin D/glucocorticoid synergism observed in vitro and in vivo were absent in mice with mTORc1-deficient T cells. Pharmacologic inhibition of mTORc1 by everolimus augmented the effects of glucocorticoid treatment in wild type mice during EAE even more potently than vitamin D co-administration did.

No significant changes of proliferation or apoptosis by JNK-inhibition and MP co-incubation were observed in human T cells.

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The vitamin enhances steroid efficacy via inhibition of mTORc1.

The vitamin enhances steroid efficacy via inhibition of mTORc1.

BERLIN—Vitamin D increases the therapeutic effects of glucocorticoids via an mTORc1–dependent upregulation of the glucocorticoid receptor, according to a report at ECTRIMS 2018. “These data suggest that efficacy of glucocorticoids in the treatment of multiple sclerosis (MS) relapses could be improved by mTORc1 inhibition,” said lead author Maud Bagnoud, a doctoral candidate from the Department for Biomedical Research at the University of Bern in Switzerland, and colleagues.

Glucocorticoids are the mainstay in the treatment of acute MS relapses. Still, disability increases in more than 40% of patients. Ms. Bagnoud and colleagues investigated the potential of vitamin D to enhance steroid efficacy for MS relapse therapy and the mechanisms involved.

The researchers analyzed vitamin D levels using an immunoassay in patients with stable MS (n = 56), patients with relapsing glucocorticoid-responsive MS (n = 30), and patients with relapsing glucocorticoid-resistant MS (n = 24). Gene expression of human T cells (microarrays, n = 112) were correlated with 25(OH)D3 levels. Glucocorticoid receptor protein was measured using ELISA. T cell apoptosis was analyzed by FACS. Myelin oligodendrocyte glycoprotein (MOG35-55) experimental autoimmune encephalomyelitis (EAE) was performed in wild type and knockout mice with T cell specific deficiency for glucocorticoid receptor/mTORc1. The investigators analyzed the relevance of the JNK-pathway in human T cells using a competitive JNK-inhibitor (SP600125).

Patients with glucocorticoid-resistant MS had a decreased vitamin D serum level, compared with patients with glucocorticoid-responsive MS or stable MS. This decreased level of vitamin D was associated with reduced expression of the glucocorticoid receptor in T cells. In vitro, vitamin D increased the concentration of glucocorticoid receptor protein in T cells in a dose-dependent manner. Focusing on T cells donated from patients with MS during glucocorticoid-resistant relapse, this glucocorticoid receptor upregulation by vitamin D increased T cell apoptosis by approximately 10%, if treated with vitamin D and glucocorticoids, compared with glucocorticoid monotherapy. Combination therapy ameliorated EAE disease course more efficiently than monotherapies did. This effect was dependent on the presence of the glucocorticoid receptor in T cells.

On a molecular level, vitamin D inhibited mTORc1 signal transduction in murine T cells in vitro. Furthermore, hypovitaminosis D was associated with reduced expression of the archetype mTORc1 inhibitor tuberous sclerosis complex 1 in human T cells. The upregulation of the glucocorticoid receptor by vitamin D as well as the functional vitamin D/glucocorticoid synergism observed in vitro and in vivo were absent in mice with mTORc1-deficient T cells. Pharmacologic inhibition of mTORc1 by everolimus augmented the effects of glucocorticoid treatment in wild type mice during EAE even more potently than vitamin D co-administration did.

No significant changes of proliferation or apoptosis by JNK-inhibition and MP co-incubation were observed in human T cells.

BERLIN—Vitamin D increases the therapeutic effects of glucocorticoids via an mTORc1–dependent upregulation of the glucocorticoid receptor, according to a report at ECTRIMS 2018. “These data suggest that efficacy of glucocorticoids in the treatment of multiple sclerosis (MS) relapses could be improved by mTORc1 inhibition,” said lead author Maud Bagnoud, a doctoral candidate from the Department for Biomedical Research at the University of Bern in Switzerland, and colleagues.

Glucocorticoids are the mainstay in the treatment of acute MS relapses. Still, disability increases in more than 40% of patients. Ms. Bagnoud and colleagues investigated the potential of vitamin D to enhance steroid efficacy for MS relapse therapy and the mechanisms involved.

The researchers analyzed vitamin D levels using an immunoassay in patients with stable MS (n = 56), patients with relapsing glucocorticoid-responsive MS (n = 30), and patients with relapsing glucocorticoid-resistant MS (n = 24). Gene expression of human T cells (microarrays, n = 112) were correlated with 25(OH)D3 levels. Glucocorticoid receptor protein was measured using ELISA. T cell apoptosis was analyzed by FACS. Myelin oligodendrocyte glycoprotein (MOG35-55) experimental autoimmune encephalomyelitis (EAE) was performed in wild type and knockout mice with T cell specific deficiency for glucocorticoid receptor/mTORc1. The investigators analyzed the relevance of the JNK-pathway in human T cells using a competitive JNK-inhibitor (SP600125).

Patients with glucocorticoid-resistant MS had a decreased vitamin D serum level, compared with patients with glucocorticoid-responsive MS or stable MS. This decreased level of vitamin D was associated with reduced expression of the glucocorticoid receptor in T cells. In vitro, vitamin D increased the concentration of glucocorticoid receptor protein in T cells in a dose-dependent manner. Focusing on T cells donated from patients with MS during glucocorticoid-resistant relapse, this glucocorticoid receptor upregulation by vitamin D increased T cell apoptosis by approximately 10%, if treated with vitamin D and glucocorticoids, compared with glucocorticoid monotherapy. Combination therapy ameliorated EAE disease course more efficiently than monotherapies did. This effect was dependent on the presence of the glucocorticoid receptor in T cells.

On a molecular level, vitamin D inhibited mTORc1 signal transduction in murine T cells in vitro. Furthermore, hypovitaminosis D was associated with reduced expression of the archetype mTORc1 inhibitor tuberous sclerosis complex 1 in human T cells. The upregulation of the glucocorticoid receptor by vitamin D as well as the functional vitamin D/glucocorticoid synergism observed in vitro and in vivo were absent in mice with mTORc1-deficient T cells. Pharmacologic inhibition of mTORc1 by everolimus augmented the effects of glucocorticoid treatment in wild type mice during EAE even more potently than vitamin D co-administration did.

No significant changes of proliferation or apoptosis by JNK-inhibition and MP co-incubation were observed in human T cells.

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What Are the Characteristics of Children With Poststroke Headache?

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Researchers characterize poststroke headache in a pediatric population.

CHICAGO—Among children with pediatric stroke, older age at stroke onset, unilateral infarct location, and stroke etiologies of arterio­pathy and chronic illness are associated with the development of poststroke headache, according to a retrospective study presented at the 47th Annual Meeting of the Child Neurology Society.

Poststroke headache is a common morbidity among patients with pediatric stroke, said Ana B. Chelse, MD, of Ann & Robert H. Lurie Children’s Hospital and Northwestern University Feinberg School of Medicine in Chicago, and colleagues. In addition, poststroke headache in children may increase health care utilization, including neuroimaging and hospital admission, the investigators said.

Research indicates that about 20% of children with stroke have headache one year after the stroke, but data about poststroke headache in children are limited.

To assess the prevalence of novel headache after pediatric stroke, the characteristics of patients with poststroke headache, and the association between poststroke headache and stroke recurrence, Dr. Chelse and colleagues conducted a single-center, retrospective study of children 30 days to 18 years old with stroke. The researchers used an internal database to identify patients with a radiographically confirmed stroke at Lurie Children’s Hospital between January 1, 2008, and December 31, 2016.

Patients with ischemic stroke with secondary hemorrhage were included in the study, but patients with primary intracerebral hemorrhage were not. The researchers obtained patients’ demographic characteristics, infarct location, headache history, emergency department visits, neuroimaging, hospital admissions, and headache treatment from medical records. They defined stroke recurrence as an acute neurologic deficit with evidence of new radiologically confirmed ischemia.

The investigators analyzed the data using chi-squared and Fisher’s exact tests. They also performed exploratory multiple logistic regression analyses that included predictors deemed significant in univariate analyses.

Of 183 patients, 45 (24.5%) had poststroke headache. Headache developed at an average of 11.7 months after stroke. In multiple logistic regression analysis, older age and unilateral infarct location were associated with poststroke headache, as were stroke etiologies of arteriopathy (odds ratio [OR], 7.28) or chronic illness (OR, 1.90). Twenty-one patients (11.4%) had a recurrent stroke during the study period. Poststroke headache was associated with stroke recurrence in a univariate analysis, but the association did not reach statistical significance after multiple logistic regression. This association is “uncertain but potentially important,” Dr. Chelse and colleagues said.

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Researchers characterize poststroke headache in a pediatric population.

Researchers characterize poststroke headache in a pediatric population.

CHICAGO—Among children with pediatric stroke, older age at stroke onset, unilateral infarct location, and stroke etiologies of arterio­pathy and chronic illness are associated with the development of poststroke headache, according to a retrospective study presented at the 47th Annual Meeting of the Child Neurology Society.

Poststroke headache is a common morbidity among patients with pediatric stroke, said Ana B. Chelse, MD, of Ann & Robert H. Lurie Children’s Hospital and Northwestern University Feinberg School of Medicine in Chicago, and colleagues. In addition, poststroke headache in children may increase health care utilization, including neuroimaging and hospital admission, the investigators said.

Research indicates that about 20% of children with stroke have headache one year after the stroke, but data about poststroke headache in children are limited.

To assess the prevalence of novel headache after pediatric stroke, the characteristics of patients with poststroke headache, and the association between poststroke headache and stroke recurrence, Dr. Chelse and colleagues conducted a single-center, retrospective study of children 30 days to 18 years old with stroke. The researchers used an internal database to identify patients with a radiographically confirmed stroke at Lurie Children’s Hospital between January 1, 2008, and December 31, 2016.

Patients with ischemic stroke with secondary hemorrhage were included in the study, but patients with primary intracerebral hemorrhage were not. The researchers obtained patients’ demographic characteristics, infarct location, headache history, emergency department visits, neuroimaging, hospital admissions, and headache treatment from medical records. They defined stroke recurrence as an acute neurologic deficit with evidence of new radiologically confirmed ischemia.

The investigators analyzed the data using chi-squared and Fisher’s exact tests. They also performed exploratory multiple logistic regression analyses that included predictors deemed significant in univariate analyses.

Of 183 patients, 45 (24.5%) had poststroke headache. Headache developed at an average of 11.7 months after stroke. In multiple logistic regression analysis, older age and unilateral infarct location were associated with poststroke headache, as were stroke etiologies of arteriopathy (odds ratio [OR], 7.28) or chronic illness (OR, 1.90). Twenty-one patients (11.4%) had a recurrent stroke during the study period. Poststroke headache was associated with stroke recurrence in a univariate analysis, but the association did not reach statistical significance after multiple logistic regression. This association is “uncertain but potentially important,” Dr. Chelse and colleagues said.

CHICAGO—Among children with pediatric stroke, older age at stroke onset, unilateral infarct location, and stroke etiologies of arterio­pathy and chronic illness are associated with the development of poststroke headache, according to a retrospective study presented at the 47th Annual Meeting of the Child Neurology Society.

Poststroke headache is a common morbidity among patients with pediatric stroke, said Ana B. Chelse, MD, of Ann & Robert H. Lurie Children’s Hospital and Northwestern University Feinberg School of Medicine in Chicago, and colleagues. In addition, poststroke headache in children may increase health care utilization, including neuroimaging and hospital admission, the investigators said.

Research indicates that about 20% of children with stroke have headache one year after the stroke, but data about poststroke headache in children are limited.

To assess the prevalence of novel headache after pediatric stroke, the characteristics of patients with poststroke headache, and the association between poststroke headache and stroke recurrence, Dr. Chelse and colleagues conducted a single-center, retrospective study of children 30 days to 18 years old with stroke. The researchers used an internal database to identify patients with a radiographically confirmed stroke at Lurie Children’s Hospital between January 1, 2008, and December 31, 2016.

Patients with ischemic stroke with secondary hemorrhage were included in the study, but patients with primary intracerebral hemorrhage were not. The researchers obtained patients’ demographic characteristics, infarct location, headache history, emergency department visits, neuroimaging, hospital admissions, and headache treatment from medical records. They defined stroke recurrence as an acute neurologic deficit with evidence of new radiologically confirmed ischemia.

The investigators analyzed the data using chi-squared and Fisher’s exact tests. They also performed exploratory multiple logistic regression analyses that included predictors deemed significant in univariate analyses.

Of 183 patients, 45 (24.5%) had poststroke headache. Headache developed at an average of 11.7 months after stroke. In multiple logistic regression analysis, older age and unilateral infarct location were associated with poststroke headache, as were stroke etiologies of arteriopathy (odds ratio [OR], 7.28) or chronic illness (OR, 1.90). Twenty-one patients (11.4%) had a recurrent stroke during the study period. Poststroke headache was associated with stroke recurrence in a univariate analysis, but the association did not reach statistical significance after multiple logistic regression. This association is “uncertain but potentially important,” Dr. Chelse and colleagues said.

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ACR and EULAR draft classification criteria for IgG4-related disease

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– A joint American College of Rheumatology and European League Against Rheumatism panel has written the first-ever classification criteria for immunoglobulin G4-related disease (IgG4-RD), and the draft version of the criteria identified the disorder with 99.2% specificity and 85.5% sensitivity when compared with expert case opinions.

Dr. John H. Stone

“We’ve come a long way” to write these criteria 17 years after the first case report, and about a decade after IgG4-RD first became part of routine rheumatology practice, John H. Stone, MD, said at the annual meeting of the American College of Rheumatology. He cited one estimate that about 185,000 Americans currently have IgG4-RD.

Approval of the draft criteria by both the ACR and EULAR remains pending.

The working group assembled by the American College of Rheumatology and the European League Against Rheumatism to write the classification criteria included 89 members, and the draft document they produced combined inclusion and exclusion criteria, “the first ACR and EULAR classification criteria to include specific exclusions, to my knowledge,” said Dr. Stone professor of medicine at Harvard Medical School and director of clinical rheumatology at Massachusetts General Hospital in Boston. The exclusions reflect the many other disorders that can mimic IgG4-RD, including cancers and several rheumatologic diseases, especially granulomatosis with polyangiitis and Sjögren’s syndrome.

The writing panel used 487 case reports from 272 patients diagnosed with IgG4-RD and 215 patients diagnosed with a different, mimic disease to derive the classification criteria, and then used 908 case reports – 493 from IgG4-RD patients and 415 reports from mimic cases – to test and validate the criteria.

The first step in classifying a patient with IgG4-RD is to identify involvement of at least one organ from the list the panel compiled of 10 organs where involvement typifies the disease: pancreas, bile ducts, orbits, lacrimal glands, major salivary glands, retroperitoneum, kidney, aorta, pachymeninges, and thyroid gland (Riedel’s thyroiditis, but not Hashimoto’s disease). Patients who do not have disease involvement in at least one of these organs don’t qualify as having IgG4-RD.

The next step is to rule out patients who have at least one exclusion criterion from a list of 21 exclusions the panel cited, divided into four categories based on the test that finds each exclusion: clinical examination, serology, radiology, or pathology.

The last step is to identify enough individual classification hallmarks in the patient so that collectively they definitively identify IgG4-RD. The writing panel endorsed seven inclusion-criteria domains that each contain at least two different disease manifestations that confer points if fulfilled. To qualify for IgG4-RD classification, a patient needs to have enough manifestations to tally at least 19 points.

Fulfilling the inclusion criteria is the key step in classification, but the exclusion criteria also play a role in helping to rule the disease in or out, Dr. Stone noted. Without the exclusion criteria, the remaining classification criteria identified the 1,395 total cases and mimics studied with an increased sensitivity of 90% (compared with 85.5% when the exclusion criteria also apply), but with reduced specificity of 88.5% (compared with 99.2%). High specificity is a key aim. The criteria are supposed to give greater uniformity to patient selection for studies and ensure that enrolled patients actually have IgG4-RD. “Our goal was criteria that would prevent enrollment of patients without IgG4-RD,” he said.

Although IgG4 level is one of the seven inclusion domains and can give a patient as many as 10.8 points toward classification when the level exceeds five times the upper limit of normal, the criteria solidify the notion that “we have greatly overemphasized IgG4” in past considerations of the disease, said Dr. Stone. Elevation of IgG4 is one of several disease markers in most patients, but it’s not essential to classification and is missing in nearly a third of patients. While the cause of IgG4-RD remains unknown, it appears to involve an abnormal interaction between B cells and a CD4+ cytotoxic T lymphocyte, an understanding that has led to testing investigational therapies that target B cells including rituximab (Rituxan) and an agent called XmAb5871. “Rituximab works very well,” Dr. Stone said. The absence of a known cause is a reason why classification is so complex.



Dr. Stone also reminded his audience that IgG4-RD is an indolent disease that can produce symptoms for months or years before getting diagnosed. It often is accompanied by significant weight loss of 20 or more pounds, but without fever, and often features a dissociation between a high erythrocyte sedimentation rate but a relatively low level of C-reactive protein. “It’s astonishing how much weight patients lose,” he said.

Though barely more than a decade on the scene, awareness of IgG4-RD among rheumatologists has become widespread, though awareness has probably lagged among many primary care physicians, Dr. Stone said in an interview. The estimated prevalence of about 185,000 U.S. residents with IgG4-RD is probably an underestimate, he added. His group at Massachusetts General Hospital in Boston averages 3-5 patients evaluated each week as possibly having IgG4-RD, and this one group is now following more than 350 patients who have been diagnosed with the disease. “It’s probably more common than a lot of other conditions that rheumatologists treat, more common than scleroderma or ANCA-associated vasculitis,” Dr. Stone said. “The new criteria will help further raise awareness.”

Dr. Stone has been a consultant to and has received research funding from Genentech, Roche, and Xencor.

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– A joint American College of Rheumatology and European League Against Rheumatism panel has written the first-ever classification criteria for immunoglobulin G4-related disease (IgG4-RD), and the draft version of the criteria identified the disorder with 99.2% specificity and 85.5% sensitivity when compared with expert case opinions.

Dr. John H. Stone

“We’ve come a long way” to write these criteria 17 years after the first case report, and about a decade after IgG4-RD first became part of routine rheumatology practice, John H. Stone, MD, said at the annual meeting of the American College of Rheumatology. He cited one estimate that about 185,000 Americans currently have IgG4-RD.

Approval of the draft criteria by both the ACR and EULAR remains pending.

The working group assembled by the American College of Rheumatology and the European League Against Rheumatism to write the classification criteria included 89 members, and the draft document they produced combined inclusion and exclusion criteria, “the first ACR and EULAR classification criteria to include specific exclusions, to my knowledge,” said Dr. Stone professor of medicine at Harvard Medical School and director of clinical rheumatology at Massachusetts General Hospital in Boston. The exclusions reflect the many other disorders that can mimic IgG4-RD, including cancers and several rheumatologic diseases, especially granulomatosis with polyangiitis and Sjögren’s syndrome.

The writing panel used 487 case reports from 272 patients diagnosed with IgG4-RD and 215 patients diagnosed with a different, mimic disease to derive the classification criteria, and then used 908 case reports – 493 from IgG4-RD patients and 415 reports from mimic cases – to test and validate the criteria.

The first step in classifying a patient with IgG4-RD is to identify involvement of at least one organ from the list the panel compiled of 10 organs where involvement typifies the disease: pancreas, bile ducts, orbits, lacrimal glands, major salivary glands, retroperitoneum, kidney, aorta, pachymeninges, and thyroid gland (Riedel’s thyroiditis, but not Hashimoto’s disease). Patients who do not have disease involvement in at least one of these organs don’t qualify as having IgG4-RD.

The next step is to rule out patients who have at least one exclusion criterion from a list of 21 exclusions the panel cited, divided into four categories based on the test that finds each exclusion: clinical examination, serology, radiology, or pathology.

The last step is to identify enough individual classification hallmarks in the patient so that collectively they definitively identify IgG4-RD. The writing panel endorsed seven inclusion-criteria domains that each contain at least two different disease manifestations that confer points if fulfilled. To qualify for IgG4-RD classification, a patient needs to have enough manifestations to tally at least 19 points.

Fulfilling the inclusion criteria is the key step in classification, but the exclusion criteria also play a role in helping to rule the disease in or out, Dr. Stone noted. Without the exclusion criteria, the remaining classification criteria identified the 1,395 total cases and mimics studied with an increased sensitivity of 90% (compared with 85.5% when the exclusion criteria also apply), but with reduced specificity of 88.5% (compared with 99.2%). High specificity is a key aim. The criteria are supposed to give greater uniformity to patient selection for studies and ensure that enrolled patients actually have IgG4-RD. “Our goal was criteria that would prevent enrollment of patients without IgG4-RD,” he said.

Although IgG4 level is one of the seven inclusion domains and can give a patient as many as 10.8 points toward classification when the level exceeds five times the upper limit of normal, the criteria solidify the notion that “we have greatly overemphasized IgG4” in past considerations of the disease, said Dr. Stone. Elevation of IgG4 is one of several disease markers in most patients, but it’s not essential to classification and is missing in nearly a third of patients. While the cause of IgG4-RD remains unknown, it appears to involve an abnormal interaction between B cells and a CD4+ cytotoxic T lymphocyte, an understanding that has led to testing investigational therapies that target B cells including rituximab (Rituxan) and an agent called XmAb5871. “Rituximab works very well,” Dr. Stone said. The absence of a known cause is a reason why classification is so complex.



Dr. Stone also reminded his audience that IgG4-RD is an indolent disease that can produce symptoms for months or years before getting diagnosed. It often is accompanied by significant weight loss of 20 or more pounds, but without fever, and often features a dissociation between a high erythrocyte sedimentation rate but a relatively low level of C-reactive protein. “It’s astonishing how much weight patients lose,” he said.

Though barely more than a decade on the scene, awareness of IgG4-RD among rheumatologists has become widespread, though awareness has probably lagged among many primary care physicians, Dr. Stone said in an interview. The estimated prevalence of about 185,000 U.S. residents with IgG4-RD is probably an underestimate, he added. His group at Massachusetts General Hospital in Boston averages 3-5 patients evaluated each week as possibly having IgG4-RD, and this one group is now following more than 350 patients who have been diagnosed with the disease. “It’s probably more common than a lot of other conditions that rheumatologists treat, more common than scleroderma or ANCA-associated vasculitis,” Dr. Stone said. “The new criteria will help further raise awareness.”

Dr. Stone has been a consultant to and has received research funding from Genentech, Roche, and Xencor.

 

– A joint American College of Rheumatology and European League Against Rheumatism panel has written the first-ever classification criteria for immunoglobulin G4-related disease (IgG4-RD), and the draft version of the criteria identified the disorder with 99.2% specificity and 85.5% sensitivity when compared with expert case opinions.

Dr. John H. Stone

“We’ve come a long way” to write these criteria 17 years after the first case report, and about a decade after IgG4-RD first became part of routine rheumatology practice, John H. Stone, MD, said at the annual meeting of the American College of Rheumatology. He cited one estimate that about 185,000 Americans currently have IgG4-RD.

Approval of the draft criteria by both the ACR and EULAR remains pending.

The working group assembled by the American College of Rheumatology and the European League Against Rheumatism to write the classification criteria included 89 members, and the draft document they produced combined inclusion and exclusion criteria, “the first ACR and EULAR classification criteria to include specific exclusions, to my knowledge,” said Dr. Stone professor of medicine at Harvard Medical School and director of clinical rheumatology at Massachusetts General Hospital in Boston. The exclusions reflect the many other disorders that can mimic IgG4-RD, including cancers and several rheumatologic diseases, especially granulomatosis with polyangiitis and Sjögren’s syndrome.

The writing panel used 487 case reports from 272 patients diagnosed with IgG4-RD and 215 patients diagnosed with a different, mimic disease to derive the classification criteria, and then used 908 case reports – 493 from IgG4-RD patients and 415 reports from mimic cases – to test and validate the criteria.

The first step in classifying a patient with IgG4-RD is to identify involvement of at least one organ from the list the panel compiled of 10 organs where involvement typifies the disease: pancreas, bile ducts, orbits, lacrimal glands, major salivary glands, retroperitoneum, kidney, aorta, pachymeninges, and thyroid gland (Riedel’s thyroiditis, but not Hashimoto’s disease). Patients who do not have disease involvement in at least one of these organs don’t qualify as having IgG4-RD.

The next step is to rule out patients who have at least one exclusion criterion from a list of 21 exclusions the panel cited, divided into four categories based on the test that finds each exclusion: clinical examination, serology, radiology, or pathology.

The last step is to identify enough individual classification hallmarks in the patient so that collectively they definitively identify IgG4-RD. The writing panel endorsed seven inclusion-criteria domains that each contain at least two different disease manifestations that confer points if fulfilled. To qualify for IgG4-RD classification, a patient needs to have enough manifestations to tally at least 19 points.

Fulfilling the inclusion criteria is the key step in classification, but the exclusion criteria also play a role in helping to rule the disease in or out, Dr. Stone noted. Without the exclusion criteria, the remaining classification criteria identified the 1,395 total cases and mimics studied with an increased sensitivity of 90% (compared with 85.5% when the exclusion criteria also apply), but with reduced specificity of 88.5% (compared with 99.2%). High specificity is a key aim. The criteria are supposed to give greater uniformity to patient selection for studies and ensure that enrolled patients actually have IgG4-RD. “Our goal was criteria that would prevent enrollment of patients without IgG4-RD,” he said.

Although IgG4 level is one of the seven inclusion domains and can give a patient as many as 10.8 points toward classification when the level exceeds five times the upper limit of normal, the criteria solidify the notion that “we have greatly overemphasized IgG4” in past considerations of the disease, said Dr. Stone. Elevation of IgG4 is one of several disease markers in most patients, but it’s not essential to classification and is missing in nearly a third of patients. While the cause of IgG4-RD remains unknown, it appears to involve an abnormal interaction between B cells and a CD4+ cytotoxic T lymphocyte, an understanding that has led to testing investigational therapies that target B cells including rituximab (Rituxan) and an agent called XmAb5871. “Rituximab works very well,” Dr. Stone said. The absence of a known cause is a reason why classification is so complex.



Dr. Stone also reminded his audience that IgG4-RD is an indolent disease that can produce symptoms for months or years before getting diagnosed. It often is accompanied by significant weight loss of 20 or more pounds, but without fever, and often features a dissociation between a high erythrocyte sedimentation rate but a relatively low level of C-reactive protein. “It’s astonishing how much weight patients lose,” he said.

Though barely more than a decade on the scene, awareness of IgG4-RD among rheumatologists has become widespread, though awareness has probably lagged among many primary care physicians, Dr. Stone said in an interview. The estimated prevalence of about 185,000 U.S. residents with IgG4-RD is probably an underestimate, he added. His group at Massachusetts General Hospital in Boston averages 3-5 patients evaluated each week as possibly having IgG4-RD, and this one group is now following more than 350 patients who have been diagnosed with the disease. “It’s probably more common than a lot of other conditions that rheumatologists treat, more common than scleroderma or ANCA-associated vasculitis,” Dr. Stone said. “The new criteria will help further raise awareness.”

Dr. Stone has been a consultant to and has received research funding from Genentech, Roche, and Xencor.

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