A Study to Evaluate How Apitegromab Works in Subjects Who Are Less Than 2 Years Old and Have Spinal Muscular Atrophy

This double-blind, Phase 2, multiple-dose study will be conducted to evaluate the PK/PD, efficacy, safety, and tolerability of apitegromab in subjects \<2 years old with 5q autosomal recessive SMA who have delayed motor milestones for their age attributed to SMA at the discretion of the Investigator or a Children's Hospital of Philadelphia Infant Test of Neuromuscular Disorders (CHOP-INTEND) score \<55.

NCT Number	NCT07047144
Lead Sponsor	Scholar Rock, Inc.
Conditions	Spinal Muscular Atrophy, SMA, Spinal Muscular Atrophy Type 2, Spinal Muscular Atrophy Type 3, Neuromuscular Manifestations, Anti-myostatin
Enrollment	52 participants
Start Date	2025-09-15
Primary Completion	2028-11 (estimated)
Study Completion	2029-03 (estimated)
Updated on ClinicalTrials.gov	2026-05-01