Salanersen shines in early spinal muscular atrophy research

26 June 2025

Biogen’s (Nasdaq: BIIB) salanersen has shown promise in slowing neuronal damage and opening new motor milestones, according to interim findings from a Phase I study.

The investigational antisense oligonucleotide for spinal muscular atrophy (SMA) is being developed in collaboration with Ionis Pharmaceuticals (Nasdaq: IONS).

The once‑a‑year treatment demonstrated signs of substantial slowing of neurodegeneration, as measured by neurofilament light‑chain levels. Exploratory outcomes in treated children pointed to meaningful gains in motor function and acquisition of World Health Organization milestones over 12 months.

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