Author Archives: Steve Bryson PhD

A team of scientists in Iowa have created a super minigene  — a small gene fragment used as a tool to study genetic manipulation — that recapitulates essential features of the natural SMN1 and SMN2 genes linked to spinal muscular atrophy (SMA) and its severity. One of the most…

  Despite concerns about long-term efficacy and safety, gene therapy was the first choice treatment for most parents of children with spinal muscular atrophy (SMA), whether diagnosed via newborn genetic screening or symptoms, according to a new survey study. However, the amount and type of information parents received upon…

The start of a newborn screening (NBS) program for spinal muscular atrophy (SMA), allowing early treatment for infants found to have the disease, added to healthy years of life for patients in Belgium, according to a real-world analysis of its cost-effectiveness. “Spinal muscular atrophy newborn screening coupled with early…

Blood levels of troponin-I, a marker for heart muscle damage, are best measured before and after gene therapy in each newborn with spinal muscular atrophy (SMA), a new study concluded. Although elevated troponin-I has been associated with SMA gene therapy, levels above the reference values generated from adults…

Modified surgery to correct a severe abnormal curvature of the spine in people with spinal muscular atrophy (SMA) allowed for reliable access to the spinal canal for Spinraza (nusinersen) injections, a small study shows. Spinraza, guided by ultrasound, was successfully administered through a small hole created in the…

Consistent access to disease-modifying therapies (DMTs) is a major concern for parent caregivers of children with spinal muscular atrophy (SMA) in Canada, a study reported. Barriers to such treatments, as described by caregivers, included variable regulatory approvals across different Canadian provinces, high costs, and insufficient healthcare infrastructure. “Our…

A newer assessment method known as dEMB, for decomposition electromyography — which uses artificial intelligence (AI) tools to measure nerve and muscle function — strongly correlated with measures of physical function and was able to distinguish people with spinal muscular atrophy (SMA) who were able to walk from those…

Disease-modifying therapies (DMTs) may slow the progression of an abnormal curvature of the spine in people with spinal muscular atrophy (SMA) type 2, a study reported. For those patients treated early, especially ones with no or minimal scoliosis, these findings were particularly significant, according to “Early treatment of…

After a year of treatment with oral Evrysdi (risdiplam), 80% of babies with pre-symptomatic spinal muscular atrophy (SMA) were able to sit without support for at least five seconds. The findings met the primary outcome measure of RAINBOWFISH, a Phase 2 clinical trial (NCT03779334) evaluating the therapy…

Elevated levels of neutralizing antibodies against AAV9, which can reduce the efficacy of the gene therapy Zolgensma (onasemnogene abeparvovec), were uncommon in infants and young children with spinal muscular atrophy (SMA), a study found. It also showed that anti-AAV9 antibody levels, highest in early infancy, declined over…