Roche says risdiplam viable in spinal muscular atrophy preliminary Kumar Jeetendra | April 28, 2020 Roche Holding AG’s risdiplam showed significant improvement in survival and motor milestones in a clinical trial for infants with type 1 spinal muscular atrophy (SMA), the Swiss drugmaker said on Tuesday. The Firefish part 2 study met its primary endpoint by demonstrating a significant increase in motor milestones in infants aged 1-7 months after 12 …