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Although various clinical, MRI, and patient-specific factors may guide the choice of disease-modifying therapy (DMT) for multiple sclerosis (MS), the treatment selection process is not precision medicine, said Mark Freedman, MD, MSc, in a presentation at ACTRIMS Forum 2019, the meeting held by the Americas Committee for Treatment and Research in Multiple Sclerosis. “Right now, we are probably dealing with more of an imprecise medicine,” said Dr. Freedman.

Dr. Mark Freedman, professor of neurology at the University of Ottawa, director of the Multiple Sclerosis Research Unit at Ottawa Hospital, and senior scientist at the Ottawa Hospital Research Institute
Dr. Mark Freedman

Information such as a patient’s ability to recover from relapses may indicate MS severity or the likelihood of disease progression, but selecting a therapy remains “an art of medicine,” said Dr. Freedman, professor of neurology at the University of Ottawa, director of the multiple sclerosis research unit at Ottawa Hospital, and senior scientist at the Ottawa Hospital Research Institute.

When prescribing a DMT, neurologists tend to consider three key elements: the disease, the treatment, and patient expectations. “Focus on these three aspects,” Dr. Freedman said.

It is no longer sufficient for neurologists to diagnose MS, hand the patient a drug, and “expect that things are going to go the way you want them to go,” he said.

Immunomodulating, anti–cell trafficking, or cell-depleting therapy?

Genetics, sex, types of relapses, recovery from relapses, response to therapy, MRI burden, and other biomarkers such as oligoclonal bands and neurofilaments may indicate which patients have severe disease and should receive aggressive treatment.

Determining the phase of the disease is a crucial first step “that is going to drive your choice of therapy,” he said.

Dr. Freedman likened the development of progressive MS to approaching the edge of a cliff. If patients appear to be nearing the progressive phase, “then your choice of therapy has to be an aggressive one – one that will hopefully hold them back from falling,” he said. In the earlier phases of MS, on the other hand, “you are looking at a long-term treatment that should probably be safe and still able to contain the disease,” such as an immunomodulator. If a patient is “about to fall off, you may want to go for temporary use of an antitrafficker to control things, and then eventually deplete the cells that are going to be causing the patient to fall off the cliff.”

Prognostic factors

Disease activity over time, and whether the disease is progressing faster or slower than would be expected, may be important prognostic factors. A patient’s sex also may be a factor because women tend to have more attacks and to have their attacks at a younger age, Dr. Freedman said.

The types of relapses and a patient’s ability to recover from them may provide important information. “Some attacks are quite mild. Others tend to build up disease,” Dr. Freedman said. “Some people are better healers than others. We have all seen people who have been quadriplegic in an ICU on a ventilator walk out of the hospital without even a numb toe. And other people who have a little bit of weakness in one leg seem to never be able to recover from that. Exactly what drives repair is still not clear.” Most patients do recover, however, “and the inability to recover early on is a bad omen,” Dr. Freedman said.

When researchers examined the relationship between functional components of the Expanded Disability Status Scale (EDSS) and disability progression, “not surprisingly ... pyramidal and spinal cord and cerebellar [functioning] are more associated with earlier progression” (Neuroepidemiology. 2015;44[1]:16-23).

A study by Lublin et al. found that patients with MS whose attacks left them with residual deficits had more EDSS accumulation over time (Neurology. 2003 Dec 9;61[11]:1528-32.).

 

 

Response to immunomodulators

“The inability to control the disease with an immunomodulator is a bad sign,” Dr. Freedman said. He pointed to data from a trial of teriflunomide that included patients who had had suboptimal responses to first-line therapy as well as patients who were treatment naive (Mult Scler. 2018 Apr;24[4]:535-9.). Some of the patients who had received prior MS therapy were randomized to placebo, which “is not something that would happen today,” he said.

“If you just focus on the [patients who received placebo] and look at the rate of attack in patients who had no prior DMT, at least one prior DMT, or two or more prior DMTs, the attack rates are much higher in those individuals who tried and failed first-line therapies,” Dr. Freedman said. These patients also had more EDSS progression. “The majority of people do respond [to first-line treatment], but those who do not you need to worry about a little bit more than those who do respond.”

MRI lesions and brain reserve

MRI activity over time tends to predict disease progression, and lesion location is important. One cohort study found that the likelihood of developing secondary progressive MS was lower among patients who did not develop new spinal cord or brainstem lesions in the first three years of the disease, compared with those who did.

In addition, patients who presented with more lesions were more likely to reach an EDSS score 3 or 6 over 10 years (Brain. 2008 Mar;131[Pt 3]:808-17.).

Brain reserve also may be important. Among 52 treatment-naive Serbian adults with MS, Sumowski et al. found that maximal lifetime brain growth as estimated with intracranial volume was associated with risk of disability progression over 5 years (Neurology. 2016 May 24;86[21]:2006-9.). “Those who had a greater reserve had a much lower risk of disease progression,” Dr. Freedman said. The results suggest that patients with more brain reserve may be better able to sustain damage as the disease progresses and they age, he said.

Comorbidities

In the past, neurologists may have left it up to general practitioners “to sort out the rest of the patient’s health,” Dr. Freedman said. “But we now recognize that having certain comorbidities already puts a higher burden onto the disease. And those patients who have more comorbidities ... are going to do worse. But not only are they going to do worse ... it turns out that patients who have more comorbidities are going to have less of a response to your various therapies.” Vascular comorbidities, in particular, may affect treatment response (Neurology. 2017 Nov 28;89[22]:2222-9.).

If hypertension or diabetes clinics can help control those conditions in patients with MS, “it will help us a lot in getting what we are expecting from the [MS] medications,” Dr. Freedman said.

Adherence, expectations, and symptomatic treatment

Ultimately, selecting an MS therapy is a decision that doctors share with their patients. “You’re going to have a discussion with them,” he said. “You can see what fits their lifestyle.” For example, a world traveler might not be a good candidate for a drug that requires regular monitoring. A patient’s risk averseness also may influence treatment choice.

 

 

If you involve patients in the selection process, it may improve medication adherence. In addition, patients need to understand what you aim to accomplish with a DMT, said Dr. Freedman. “That may sound like a trivial thing. But how many times has the patient come in and said, ‘The drug is not working. ... My eye is not better’” when that was not the goal of treatment to begin with. Let patients know that symptomatic treatments may address problems apart from MS DMT. This personalized but imprecise approach to treatment is “probably the best we can do for now,” Dr. Freedman said.

Dr. Freedman has received a research grant from Genzyme and is on the company’s speakers bureau. He has received honoraria and consulting fees from various pharmaceutical companies and serves on companies’ advisory boards.

SOURCE: Freedman MS. ACTRIMS Forum 2019, Session 2.

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Although various clinical, MRI, and patient-specific factors may guide the choice of disease-modifying therapy (DMT) for multiple sclerosis (MS), the treatment selection process is not precision medicine, said Mark Freedman, MD, MSc, in a presentation at ACTRIMS Forum 2019, the meeting held by the Americas Committee for Treatment and Research in Multiple Sclerosis. “Right now, we are probably dealing with more of an imprecise medicine,” said Dr. Freedman.

Dr. Mark Freedman, professor of neurology at the University of Ottawa, director of the Multiple Sclerosis Research Unit at Ottawa Hospital, and senior scientist at the Ottawa Hospital Research Institute
Dr. Mark Freedman

Information such as a patient’s ability to recover from relapses may indicate MS severity or the likelihood of disease progression, but selecting a therapy remains “an art of medicine,” said Dr. Freedman, professor of neurology at the University of Ottawa, director of the multiple sclerosis research unit at Ottawa Hospital, and senior scientist at the Ottawa Hospital Research Institute.

When prescribing a DMT, neurologists tend to consider three key elements: the disease, the treatment, and patient expectations. “Focus on these three aspects,” Dr. Freedman said.

It is no longer sufficient for neurologists to diagnose MS, hand the patient a drug, and “expect that things are going to go the way you want them to go,” he said.

Immunomodulating, anti–cell trafficking, or cell-depleting therapy?

Genetics, sex, types of relapses, recovery from relapses, response to therapy, MRI burden, and other biomarkers such as oligoclonal bands and neurofilaments may indicate which patients have severe disease and should receive aggressive treatment.

Determining the phase of the disease is a crucial first step “that is going to drive your choice of therapy,” he said.

Dr. Freedman likened the development of progressive MS to approaching the edge of a cliff. If patients appear to be nearing the progressive phase, “then your choice of therapy has to be an aggressive one – one that will hopefully hold them back from falling,” he said. In the earlier phases of MS, on the other hand, “you are looking at a long-term treatment that should probably be safe and still able to contain the disease,” such as an immunomodulator. If a patient is “about to fall off, you may want to go for temporary use of an antitrafficker to control things, and then eventually deplete the cells that are going to be causing the patient to fall off the cliff.”

Prognostic factors

Disease activity over time, and whether the disease is progressing faster or slower than would be expected, may be important prognostic factors. A patient’s sex also may be a factor because women tend to have more attacks and to have their attacks at a younger age, Dr. Freedman said.

The types of relapses and a patient’s ability to recover from them may provide important information. “Some attacks are quite mild. Others tend to build up disease,” Dr. Freedman said. “Some people are better healers than others. We have all seen people who have been quadriplegic in an ICU on a ventilator walk out of the hospital without even a numb toe. And other people who have a little bit of weakness in one leg seem to never be able to recover from that. Exactly what drives repair is still not clear.” Most patients do recover, however, “and the inability to recover early on is a bad omen,” Dr. Freedman said.

When researchers examined the relationship between functional components of the Expanded Disability Status Scale (EDSS) and disability progression, “not surprisingly ... pyramidal and spinal cord and cerebellar [functioning] are more associated with earlier progression” (Neuroepidemiology. 2015;44[1]:16-23).

A study by Lublin et al. found that patients with MS whose attacks left them with residual deficits had more EDSS accumulation over time (Neurology. 2003 Dec 9;61[11]:1528-32.).

 

 

Response to immunomodulators

“The inability to control the disease with an immunomodulator is a bad sign,” Dr. Freedman said. He pointed to data from a trial of teriflunomide that included patients who had had suboptimal responses to first-line therapy as well as patients who were treatment naive (Mult Scler. 2018 Apr;24[4]:535-9.). Some of the patients who had received prior MS therapy were randomized to placebo, which “is not something that would happen today,” he said.

“If you just focus on the [patients who received placebo] and look at the rate of attack in patients who had no prior DMT, at least one prior DMT, or two or more prior DMTs, the attack rates are much higher in those individuals who tried and failed first-line therapies,” Dr. Freedman said. These patients also had more EDSS progression. “The majority of people do respond [to first-line treatment], but those who do not you need to worry about a little bit more than those who do respond.”

MRI lesions and brain reserve

MRI activity over time tends to predict disease progression, and lesion location is important. One cohort study found that the likelihood of developing secondary progressive MS was lower among patients who did not develop new spinal cord or brainstem lesions in the first three years of the disease, compared with those who did.

In addition, patients who presented with more lesions were more likely to reach an EDSS score 3 or 6 over 10 years (Brain. 2008 Mar;131[Pt 3]:808-17.).

Brain reserve also may be important. Among 52 treatment-naive Serbian adults with MS, Sumowski et al. found that maximal lifetime brain growth as estimated with intracranial volume was associated with risk of disability progression over 5 years (Neurology. 2016 May 24;86[21]:2006-9.). “Those who had a greater reserve had a much lower risk of disease progression,” Dr. Freedman said. The results suggest that patients with more brain reserve may be better able to sustain damage as the disease progresses and they age, he said.

Comorbidities

In the past, neurologists may have left it up to general practitioners “to sort out the rest of the patient’s health,” Dr. Freedman said. “But we now recognize that having certain comorbidities already puts a higher burden onto the disease. And those patients who have more comorbidities ... are going to do worse. But not only are they going to do worse ... it turns out that patients who have more comorbidities are going to have less of a response to your various therapies.” Vascular comorbidities, in particular, may affect treatment response (Neurology. 2017 Nov 28;89[22]:2222-9.).

If hypertension or diabetes clinics can help control those conditions in patients with MS, “it will help us a lot in getting what we are expecting from the [MS] medications,” Dr. Freedman said.

Adherence, expectations, and symptomatic treatment

Ultimately, selecting an MS therapy is a decision that doctors share with their patients. “You’re going to have a discussion with them,” he said. “You can see what fits their lifestyle.” For example, a world traveler might not be a good candidate for a drug that requires regular monitoring. A patient’s risk averseness also may influence treatment choice.

 

 

If you involve patients in the selection process, it may improve medication adherence. In addition, patients need to understand what you aim to accomplish with a DMT, said Dr. Freedman. “That may sound like a trivial thing. But how many times has the patient come in and said, ‘The drug is not working. ... My eye is not better’” when that was not the goal of treatment to begin with. Let patients know that symptomatic treatments may address problems apart from MS DMT. This personalized but imprecise approach to treatment is “probably the best we can do for now,” Dr. Freedman said.

Dr. Freedman has received a research grant from Genzyme and is on the company’s speakers bureau. He has received honoraria and consulting fees from various pharmaceutical companies and serves on companies’ advisory boards.

SOURCE: Freedman MS. ACTRIMS Forum 2019, Session 2.

Although various clinical, MRI, and patient-specific factors may guide the choice of disease-modifying therapy (DMT) for multiple sclerosis (MS), the treatment selection process is not precision medicine, said Mark Freedman, MD, MSc, in a presentation at ACTRIMS Forum 2019, the meeting held by the Americas Committee for Treatment and Research in Multiple Sclerosis. “Right now, we are probably dealing with more of an imprecise medicine,” said Dr. Freedman.

Dr. Mark Freedman, professor of neurology at the University of Ottawa, director of the Multiple Sclerosis Research Unit at Ottawa Hospital, and senior scientist at the Ottawa Hospital Research Institute
Dr. Mark Freedman

Information such as a patient’s ability to recover from relapses may indicate MS severity or the likelihood of disease progression, but selecting a therapy remains “an art of medicine,” said Dr. Freedman, professor of neurology at the University of Ottawa, director of the multiple sclerosis research unit at Ottawa Hospital, and senior scientist at the Ottawa Hospital Research Institute.

When prescribing a DMT, neurologists tend to consider three key elements: the disease, the treatment, and patient expectations. “Focus on these three aspects,” Dr. Freedman said.

It is no longer sufficient for neurologists to diagnose MS, hand the patient a drug, and “expect that things are going to go the way you want them to go,” he said.

Immunomodulating, anti–cell trafficking, or cell-depleting therapy?

Genetics, sex, types of relapses, recovery from relapses, response to therapy, MRI burden, and other biomarkers such as oligoclonal bands and neurofilaments may indicate which patients have severe disease and should receive aggressive treatment.

Determining the phase of the disease is a crucial first step “that is going to drive your choice of therapy,” he said.

Dr. Freedman likened the development of progressive MS to approaching the edge of a cliff. If patients appear to be nearing the progressive phase, “then your choice of therapy has to be an aggressive one – one that will hopefully hold them back from falling,” he said. In the earlier phases of MS, on the other hand, “you are looking at a long-term treatment that should probably be safe and still able to contain the disease,” such as an immunomodulator. If a patient is “about to fall off, you may want to go for temporary use of an antitrafficker to control things, and then eventually deplete the cells that are going to be causing the patient to fall off the cliff.”

Prognostic factors

Disease activity over time, and whether the disease is progressing faster or slower than would be expected, may be important prognostic factors. A patient’s sex also may be a factor because women tend to have more attacks and to have their attacks at a younger age, Dr. Freedman said.

The types of relapses and a patient’s ability to recover from them may provide important information. “Some attacks are quite mild. Others tend to build up disease,” Dr. Freedman said. “Some people are better healers than others. We have all seen people who have been quadriplegic in an ICU on a ventilator walk out of the hospital without even a numb toe. And other people who have a little bit of weakness in one leg seem to never be able to recover from that. Exactly what drives repair is still not clear.” Most patients do recover, however, “and the inability to recover early on is a bad omen,” Dr. Freedman said.

When researchers examined the relationship between functional components of the Expanded Disability Status Scale (EDSS) and disability progression, “not surprisingly ... pyramidal and spinal cord and cerebellar [functioning] are more associated with earlier progression” (Neuroepidemiology. 2015;44[1]:16-23).

A study by Lublin et al. found that patients with MS whose attacks left them with residual deficits had more EDSS accumulation over time (Neurology. 2003 Dec 9;61[11]:1528-32.).

 

 

Response to immunomodulators

“The inability to control the disease with an immunomodulator is a bad sign,” Dr. Freedman said. He pointed to data from a trial of teriflunomide that included patients who had had suboptimal responses to first-line therapy as well as patients who were treatment naive (Mult Scler. 2018 Apr;24[4]:535-9.). Some of the patients who had received prior MS therapy were randomized to placebo, which “is not something that would happen today,” he said.

“If you just focus on the [patients who received placebo] and look at the rate of attack in patients who had no prior DMT, at least one prior DMT, or two or more prior DMTs, the attack rates are much higher in those individuals who tried and failed first-line therapies,” Dr. Freedman said. These patients also had more EDSS progression. “The majority of people do respond [to first-line treatment], but those who do not you need to worry about a little bit more than those who do respond.”

MRI lesions and brain reserve

MRI activity over time tends to predict disease progression, and lesion location is important. One cohort study found that the likelihood of developing secondary progressive MS was lower among patients who did not develop new spinal cord or brainstem lesions in the first three years of the disease, compared with those who did.

In addition, patients who presented with more lesions were more likely to reach an EDSS score 3 or 6 over 10 years (Brain. 2008 Mar;131[Pt 3]:808-17.).

Brain reserve also may be important. Among 52 treatment-naive Serbian adults with MS, Sumowski et al. found that maximal lifetime brain growth as estimated with intracranial volume was associated with risk of disability progression over 5 years (Neurology. 2016 May 24;86[21]:2006-9.). “Those who had a greater reserve had a much lower risk of disease progression,” Dr. Freedman said. The results suggest that patients with more brain reserve may be better able to sustain damage as the disease progresses and they age, he said.

Comorbidities

In the past, neurologists may have left it up to general practitioners “to sort out the rest of the patient’s health,” Dr. Freedman said. “But we now recognize that having certain comorbidities already puts a higher burden onto the disease. And those patients who have more comorbidities ... are going to do worse. But not only are they going to do worse ... it turns out that patients who have more comorbidities are going to have less of a response to your various therapies.” Vascular comorbidities, in particular, may affect treatment response (Neurology. 2017 Nov 28;89[22]:2222-9.).

If hypertension or diabetes clinics can help control those conditions in patients with MS, “it will help us a lot in getting what we are expecting from the [MS] medications,” Dr. Freedman said.

Adherence, expectations, and symptomatic treatment

Ultimately, selecting an MS therapy is a decision that doctors share with their patients. “You’re going to have a discussion with them,” he said. “You can see what fits their lifestyle.” For example, a world traveler might not be a good candidate for a drug that requires regular monitoring. A patient’s risk averseness also may influence treatment choice.

 

 

If you involve patients in the selection process, it may improve medication adherence. In addition, patients need to understand what you aim to accomplish with a DMT, said Dr. Freedman. “That may sound like a trivial thing. But how many times has the patient come in and said, ‘The drug is not working. ... My eye is not better’” when that was not the goal of treatment to begin with. Let patients know that symptomatic treatments may address problems apart from MS DMT. This personalized but imprecise approach to treatment is “probably the best we can do for now,” Dr. Freedman said.

Dr. Freedman has received a research grant from Genzyme and is on the company’s speakers bureau. He has received honoraria and consulting fees from various pharmaceutical companies and serves on companies’ advisory boards.

SOURCE: Freedman MS. ACTRIMS Forum 2019, Session 2.

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