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

Eye movement abnormalities may help detect, track FA progression

People with Friedreich’s ataxia often show abnormalities in their eye movements and looking for characteristic changes there may help diagnose the disease and track its progression, a review study finds. “Quantitative oculomotor [eye movement] testing in [Friedreich’s ataxia] may facilitate early diagnosis and provide value in monitoring disease…

Potential therapy ATH434 may target toxic iron buildup in cells

An experimental compound called ATH434, currently being evaluated in clinical trials for a neurological disorder called multiple system atrophy, also may have the potential to treat Friedreich’s ataxia (FA). Data specifically indicate that ATH434 could help to reduce the toxic buildup of iron in cells that is characteristic…

FA likely marked by problems making mitochondrial proteins

A deficiency of frataxin, the protein whose lack causes Friedreich’s ataxia, leads to problems with mitochondrial translation — the molecular process by which new proteins are made in the mitochondria, the so-called powerhouse of the cell responsible for energy production — according to a new study. The findings specifically…

FA community voices eagerness, expectations for gene therapy

People in the Friedreich’s ataxia (FA) community await the possibility of gene therapies for their disease, with many saying they would participate in gene therapy trials regardless of the potential for side effects or other consequences. Around half of the survey’s 137 respondents expected that such treatment — delivering…

FA treatments that target mitochondria may best help patients

Therapies that aid mitochondria, cellular organelles responsible for producing most of the energy needed by cells, may help with physical function and heart health in people with Friedreich’s ataxia (FA), according to a review of published studies. Findings appear to support the benefits of Skyclarys (omaveloxolone), the only…

Voice-based analysis may help differentiate FA from other diseases

Analyzing patients’ voices using machine learning may help to identify Friedreich’s ataxia (FA) and differentiate it from other neurological disorders, a new study shows. “The implications of this approach are substantial and provide new opportunities for healthcare, particularly for remote and rural areas where access to health providers might…

Interferon gamma helps protect cells from damage in disease model

Treatment with interferon gamma (IFN-gamma), an immune signaling molecule, helped to protect against damage in a cellular model of Friedreich’s ataxia (FA), a study reports. Although IFN-gamma failed to show clear benefits in clinical trials, these new findings “could help in the design of better therapeutic schedules and shed…

Gene abnormality in FA muscle cells is a ‘double hit’: Study

Fredrich’s ataxia (FA) impairs the regulation of hundreds of genes in muscle cells, resulting in reduced activity in those responsible for mitochondrial function and increased activity of repressor genes, a study reports. Addressing both aspects of this genetic abnormality “double hit” may be necessary to achieve the best therapeutic…

Eye movement may be a helpful measure of disease severity: Review

Objective measures of eye movement abnormalities are associated with measures of disease severity in Friedriech’s ataxia (FA) and other hereditary ataxias, a new study reports. “We have shown that characteristic oculomotor [eye movement] abnormalities can be quantified by the use of eye movement recordings in hereditary ataxias, and that…

Spinal Cord Abnormalities Correlate With Disease Severity in FA

People with Friedreich’s ataxia show marked abnormalities in the structure of the upper spinal cord, some of which are correlated with measures of disease duration and severity, a study reports. “These results provide new insights about [the development of Friedreich’s ataxia] and indicate that spinal cord MRI may be…

$4.8M Grant Supports Work Into Gene Editing Treatment for FA

A $4.8 million grant from the California Institute for Regenerative Medicine (CIRM) will support a research project hoping to move a one-time gene editing treatment for Friedreich’s ataxia closer to clinical trials. “If successful, this approach could prevent the neurologic and cardiac complications in [Friedreich’s ataxia] and address the pressing…

Smoothened Agonist May Normalize Defects in Brain Cells With FA

Astrocytes, a type of support cell in the brain, showed metabolic defects and unusual pro-inflammatory activity that likely contributes to neuronal dysfunction in a cell model of Friedreich’s ataxia (FA), according to a new study. Results also indicate that treatment with a molecule called smoothened agonist (SAG) can normalize…

Europe Awaits Proposed New Framework for Sharing Health Data

The European Commission is expected to propose a new governing framework for health data next month, called the European Health Data Space (EHDS), with the aim of connecting national health systems to facilitate secure and efficient transfer of data across systems in different European nations. The move is expected to…

US Department of Defense Opening FA Research to Grant Awards

The U.S. Department of Defense (DoD) is offering grant awards to researchers working to improve care for Friedreich’s ataxia. The DoD’s Congressionally Directed Medical Research Programs (CDMRP) is a funding organization whose goal is to further the development of new approaches to address specific areas of biomedical research as…

Researchers Make New iPSC Models of Friedreich’s Ataxia

A team of scientists at Koc University in Turkey has created three new cell models of Friedreich’s ataxia (FA) derived from patients with repeat expansions in their FXN gene. The models “will facilitate studies to understand molecular mechanisms related to FRDA [Friedreich’s ataxia] pathology [disease processes] as well as therapeutic…

rideATAXIA Dallas Cycling Event Coming Up Nov. 6

This year’s rideATAXIA Dallas, a cycling event that raises money to support research into treatments for Friedreich’s ataxia, will take place Nov. 6. The event will feature in-person rides at UNT Discovery Park in Denton, Texas. Four route options are available: three, six, 27, and 50 miles. Registration…

Plans Progress for Approval of Omaveloxolone

Reata Pharmaceuticals is planning to ask the U.S. Food and Drug Administration (FDA) to approve omaveloxolone to treat people with Friedreich’s ataxia (FA) early in 2022, following the completion of a preliminary meeting with the agency. “Omaveloxolone could be the first drug approved for the treatment of Friedreich’s…

New System May Better Measure Walking Problems

Researchers have developed a new system that might better measure walking or gait problems in people with Friedreich’s ataxia and other nerve and muscle conditions. The study describing this method was published in the journal Sensors, as “Gauging Gait Disorders with a Method Inspired by Motor Control…

FDA Puts Hold on CTI-1601 Clinical Development

The U.S. Food and Drug Administration has put a hold on the clinical development of CTI-1601, an investigational treatment for Friedreich’s ataxia (FA) that is being developed by Larimar Therapeutics. According to a press release from Larimar, the hold was put in place after Larimar notified the…

Leriglitazone Shows Benefits in Cell and Animal Models

Leriglitazone, an oral treatment candidate for Friedreich’s ataxia (FA), can increase frataxin levels and reduce neuronal degeneration in cell and animal models of the disease, a study found. Along with promising clinical findings from a Phase 2 clinical trial (NCT03917225), the results support the use of leriglitazone, and the…

4 Cutting-edge Research Projects Chosen for AIM Awards

The Friedreich’s Ataxia Research Alliance (FARA), the CureFA Foundation, and fara Australia are supporting four research projects that aim to better understand the biology underlying Friedreich’s ataxia (FA) and pave the way for future treatment approaches, FARA announced in a press release. The Award for…

IXICO Joins Consortium to Develop New Imaging Markers for FA

IXICO has entered a five-year collaboration with the Friedreich’s Ataxia Research Alliance (FARA) and joined the TRACK-FA Neuroimaging Consortium, a group of academic and industry partners that are conducting a natural history study focused on tracking brain and spinal cord changes in patients with Friedreich’s ataxia (FA).

Blood Levels of 2 Proteins Seen as Possible Measure of Heart Health

Measuring blood levels of two proteins, N-terminal pro-brain natriuretic peptide (NT-proBNP) and troponin, may provide useful information about heart health in people with Friedreich’s ataxia (FA), a study suggests. The study, “Significance of NT-proBNP and High-Sensitivity Troponin in Friedreich Ataxia,” was published in the …

Extent of Motor Difficulties May Mirror Problems in Cognitive Abilities

Poorer motor control associates with greater cognitive difficulties in people with Friedreich’s ataxia (FA), a study from Belgium suggests. Its researchers also indicate that a recently validated cognitive test, although for a separate disease, ably captures the severity of problems with higher-level thinking in these patients, and could be used in…