| Active, not recruiting | 3 | 188 | Europe, US | Apitegromab, SRK-015, Placebo | Scholar Rock, Inc. | Spinal Muscular Atrophy, Spinal Muscular Atrophy Type 3, Spinal Muscular Atrophy Type 2, SMA, Neuromuscular Diseases, Muscular Atrophy, Atrophy, Muscular Atrophy, Spinal, Neuromuscular Manifestations, Anti-myostatin | 10/24 | 12/24 | | |