Assessing the levels of methylation — small chemical tags on specific DNA regions — in the FXN gene may help identify Friedreich’s ataxia (FA) carriers showing no disease symptoms, a study suggests. Making such a diagnosis is often “fraught with technical difficulties,” according to researchers, who sought “a reliable…
Abnormalities in the light-sensing cells of the eyes are detectable in carriers of Friedreich’s ataxia (FA), but do not appear to affect parts of the pathways that are essential for vision so carriers do not experience visual impairment. That’s according to a study, “Retinal and Visual…
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…
Researchers have developed and characterized mouse models of Friedreich’s ataxia (FA) carrying a rare disease-causing mutation, a study reports. The rare FXN gene mutation, dubbed G130V, is found in some FA patients alongside the common gene expansion defects seen in most cases. These patients experience less severe symptoms and…
Among people with Friedreich’s ataxia, thinner layers of nerve cells at the retina — the light-sensing cells located at the back of the eye — are associated with more severe disease and lower frataxin protein levels, a study reported. Results suggest that measuring the thickness of these retinal nerves…
Nerve and heart muscle cells derived from a man with Friedreich’s ataxia (FA) showed differences in the activity of multiple genes, a study reported. In nerve cells, deficiency in the frataxin protein, the underlying cause of FA, influenced genes related to energy-producing glucose metabolism, or glycolysis. In heart…
Prime Medicine’s gene-editing technology — called Prime Editing — successfully corrected the genetic deficits associated with Friedreich’s ataxia (FA) and restored nerve cell projections in preclinical studies using patient cells, the company has announced. The company also announced positive updates from a number of its 18 other developmental programs…
Researchers have developed statistical models to help predict the progression of Friedreich’s ataxia using data such as age at disease onset and genetic information. Although the models are not yet accurate enough to be employed in clinical use, the researchers said this is a first step toward individualized medicine…
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…
The investigational therapy DT-216 safely worked to more than double the activity of the FXN gene — involved in energy production in cells — in people with Friedreich’s ataxia (FA). That’s according to new data from a single-ascending dose (SAD) Phase 1 clinical trial, which showed the treatment candidate was…
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