News

SMA prevalence at birth lower than thought, US study says

The prevalence of spinal muscular atrophy (SMA) at birth in the U.S. is lower than the historic global SMA birth prevalence estimate, according to data from newborn screening programs from 30 U.S. states. The findings were published as a research letter, “Newborn Screening and Birth Prevalence for Spinal…

Inflammatory signaling molecules may predict response to Spinraza

In people with spinal muscular atrophy (SMA) treated with Spinraza (nusinersen), levels of pro-inflammatory signaling molecules tend to decrease while levels of anti-inflammatory signaling molecules tend to increase in the months after starting treatment, a study has found. Findings also suggested that changes in certain inflammation-regulating molecules may…

Study finds DNA contamination persists in SMA newborn screening

DNA contamination from sample processing remains a major problem in spinal muscular atrophy (SMA) newborn screening, a study reported. Researchers proposed analytic cut-off values to clearly separate samples testing positive for SMA from negative samples. Data also showed that adding a freezing step before DNA extraction led to significantly…

Spinraza treatment improves motor function in nonambulatory SMA

Treatment with Spinraza (nusinersen) improved motor function in children, adolescents, and adults with spinal muscle atrophy (SMA) who were unable to walk without assistance, according to a four-year real-world analysis. Moreover, nine of the 12 patients who underwent continuous evaluations while on Spinraza over the four years achieved…