John Brandsema, MD, is a pediatric neurologist at Children's Hospital of Philadelphia
Describing SMA Progression Over Time
May 15th 2025Panelists discuss how spinal muscular atrophy (SMA) progresses over time, affecting motor function differently in older patients vs infants, with experts noting the shift from traditional classification (types 1 to 4) to functional categories (nonsitters, sitters, walkers).