Marisa Wexler, MS,  senior science writer—

Marisa holds a Master of Science in cellular and molecular pathology from the University of Pittsburgh, where she studied novel genetic drivers of ovarian cancer. Her areas of expertise include cancer biology, immunology, and genetics, and she has worked as a science writing and communications intern for the Genetics Society of America.

Articles by Marisa Wexler

Many MS Patients Report Mistreatment by Caregivers

More than half of people with multiple sclerosis (MS) who require an informal caregiver have experienced abuse or mistreatment by that caregiver, according to a study conducted in California. The study, “Validity and Reliability of the Scale to Report Emotional Stress Signs–Multiple Sclerosis (STRESS-MS) in Assessing…

Metformin Seen to Aid Cognition, Brain Biology in MS Rat Model

Treatment with the diabetes medication metformin was seen to lessen cognitive impairment, improve coordination, and normalize neuronal activity in a rat model of multiple sclerosis (MS). The study reporting these findings, “Evaluation of the effects of metformin as adenosine monophosphate-activated protein kinase activator on spatial learning and…

Signaling Protein Seen to Help Promote Myelin-making Cells

A signaling protein called fractalkine helps to regulate the development of oligodendrocytes, cells of the nervous system responsible for making myelin — the protecting coating of nerve cell fibers that is damaged and lost in multiple sclerosis (MS). This finding was in the study, “Fractalkine signaling regulates…

Gray Matter in Hippocampus Can Help Distinguish Between Two MS Types

Subtle changes in structure in the hippocampus — a region of the brain involved in processing memories — can differentiate between relapsing-remitting and primary progressive multiple sclerosis, according to a new study. The study, “Unraveling the MRI-Based Microstructural Signatures Behind Primary Progressive and Relapsing–Remitting Multiple Sclerosis Phenotypes,”…

Gilenya Started Earlier in RRMS Disease Course in Recent Years

People with relapsing-remitting multiple sclerosis (RRMS) have switched to treatment with Gilenya (fingolimod) at an earlier stage in their disease in recent years, compared to individuals who switched to the treatment around the time it became available, a new study indicates. The findings suggest “an increased experience in…

Anti-CD20 Antibodies Reduce Myelin Loss in MS Rats

Treatment with anti-CD20 antibodies reduced the loss of myelin and improved the survival of neurons in a rat model of multiple sclerosis (MS), a new study reports. The findings imply that B-cells — the immune cells that are killed by anti-CD20 antibodies — play a central role in the…

Trials of IMU-838 in RRMS, Progressive MS Start Later This Year

The U.S. Food and Drug Administration has cleared Immunic Therapeutics to initiate two clinical trials of its investigational medication IMU-838 (vidofludimus calcium) in people with relapsing-remitting multiple sclerosis (RRMS), as well as a separate trial for people with progressive types of MS. The RRMS clinical trial program, expected…

Early Use of High-efficacy DMTs Favor Lesser Disability Over Time

Long-term disability outcomes tend to be better in people with relapsing-remitting multiple sclerosis (RRMS) who are treated early on with highly effective therapies, a study based on patient registry data indicates. The study, “Long-term disability trajectories in relapsing multiple sclerosis patients treated with early intensive or…

MS Symptoms Often Apparent Years Before Diagnosis

Many people with multiple sclerosis (MS) start experiencing symptoms of the disease several years before being diagnosed, a new study suggests. While it has long been known that people with MS tend to seek medical attention more frequently in the years before diagnosis than those without the disease, there…

Long-term Kesimpta Use Not Seen in Trial to Depress Antibody Levels

Long-term use of Kesimpta (ofatumumab) among people with multiple sclerosis (MS) did not substantially lower their antibody levels, allowing them to retain an ability to fight infections, new data from a Phase 3 clinical trial indicate. “These long-term results continue to support Kesimpta as a high-efficacy, first-choice treatment with…

Oral Aubagio Approved in EU for Children With RRMS, Ages 10-17

The European Commission (EC) has approved Aubagio (teriflunomide) for the treatment of children and adolescents, ages 10 to 17, with relapsing-remitting multiple sclerosis (RRMS). Aubagio, approved for adults with RRMS since 2013, is now the first oral therapy available as a first-line treatment for pediatric patients in the European…

Results: Ponvory Outperforms Aubagio in OPTIMUM Clinical Trial

In the OPTIMUM clinical trial, Ponvory (ponesimod) significantly outperformed Aubagio (teriflunomide) in reducing relapse rates, fatigue, and evidence of brain damage among people with relapsing multiple sclerosis (MS). Based on these results, Ponvory has now been approved in the U.S. and the European Union as a treatment…

FDA Rejects Expansion of Aubagio for Pediatric MS

The U.S. Food and Drug Administration (FDA) has rejected an application requesting the expansion of Aubagio (teriflunomide) for the treatment of children and adolescents, ages 10 to 17, with relapsing forms of multiple sclerosis (MS). “The FDA deemed the data submitted were not sufficient to obtain approval of…

Meaningful Cognitive Gains in Pediatric MS Captured Using Pencil-Paper Test

A computer-based training program that exercises distinct components of attention and working memory can improve cognition in young people with pediatric-onset multiple sclerosis (POMS), a new study indicates. Findings also support a common pencil-and-paper measure of cognition, called the Symbol Digit Modalities Test (SDMT), in detecting clinically meaningful changes…

DMTs Underutilized in Younger Patients, Study Indicates

Nearly a third of people with multiple sclerosis (MS) who are younger than 40 are not being treated with disease-modifying treatments (DMTs), even though younger individuals are expected to get the most benefit from DMTs, according to a new study. “DMTs for MS are more frequently used at…

Immersive Virtual Reality May Improve Treadmill Gait Training

Immersive virtual reality may make treadmill exercise more engaging and effective for people with multiple sclerosis (MS) or other conditions that can make walking difficult, according to new research. The findings were published in the Journal of NeuroEngineering and Rehabilitation, in the study “Immersive virtual reality…

Male Immune Cells Drive More Severe MS, Study Suggests

Due to differences in sex chromosomes, certain immune cells cause more severe disease in males than females, according to a new study in a mouse model of multiple sclerosis (MS). The findings could help to explain why biological males with MS tend to have more severe disease. The study,…

Safety of Oral DMTs for RRMS in Real-world Use Seen to Match Trial Findings

People with relapsing-remitting multiple sclerosis (RRMS) using approved oral disease-modifying therapies generally tolerate the treatments well, with real-world adverse event profiles similar to those seen in clinical trials, an analysis of U.S. data indicates. Results also suggest high adherence to these therapies — meaning patients are usually taking the therapies…

#AANAM – Exploring Mavenclad’s Effects on Immune Cells

Editor’s note: The Multiple Sclerosis News Today team is providing in-depth coverage of the 2021 Virtual AAN Annual Meeting, held April 17–22. Go here to read stories from the conference. After starting treatment with the multiple sclerosis (MS) therapy Mavenclad (cladribine), some types of immune cells are more affected…

#AANAM – Research Focuses on Measuring Therapeutic Lag

Editor’s note: The Multiple Sclerosis News Today team is providing in-depth coverage of the 2021 Virtual AAN Annual Meeting, held April 17–22. Go here to read the latest stories from the conference. A novel method to calculate how long it takes therapies for multiple sclerosis (MS) to become fully effective…

#AANAM – Early Ocrevus Treatment Helps to Protect Nervous System

Editor’s note: The Multiple Sclerosis News Today team is providing in-depth coverage of the 2021 Virtual AAN Annual Meeting, April 17–22. Go here to read the latest stories from the conference. Treating multiple sclerosis (MS) in its earlier stages with Ocrevus (ocrelizumab) can substantially lower disease activity and lessen damage…