๐Ÿ›๏ธ Verified NIH Record โ€ข Updated 2026-07-15

Long-term Follow-up Study of Risdiplam in Participants With Spinal Muscular Atrophy (SMA) (NCT05232929)

Long-term Follow-up Study of Patients With Spinal Muscular Atrophy Receiving Risdiplam Treatment

๐Ÿ”ต Active, Not Recruiting Phase4 ๐Ÿ’Š Investigational Drug / Biologic Sponsor: Genentech, Inc.

๐Ÿฉบ Plain-English Summary (8th-Grade Level)

A multi-center, longitudinal, prospective, non-comparative study to investigate the long-term safety and effectiveness of risdiplam, prescribed based on clinician judgment as per the Evrysdiยฎ U.S. Package Information (USPI) in adult and pediatric participants with SMA. In this study, participants will be followed for approximately 24 months from enrollment or until withdrawal of consent, loss to follow-up, or death. Participants who discontinue risdiplam may still remain in the study if they agree to continue participating in the follow-up assessments. An optional sub-study was planned to assess the feasibility, acceptability, and adherence of remote assessment of motor and bulbar functions in participants with SMA using wearable and smartphone-based biosensors. This substudy was withdrawn upon implementation of protocol version 4.

Who can join: Review the eligibility criteria below.

Location: Barrow Neurological Institute โ€” Phoenix, Arizona

๐Ÿงช Interventions in This Study

๐Ÿ“‹ "Do I Qualify?" โ€” 1-Minute Self Screener

Instant Checklist

Full eligibility criteria are available on the official NIH protocol. View the criteria โ†—

๐Ÿ“ All Participating Trial Locations (38 Sites)

Showing the first 25 of 38 sites.

  • Barrow Neurological Institute โ€” Phoenix, Arizona
  • Phoenix Children's Hospital โ€” Phoenix, Arizona
  • University of Arkansas for Medical Sciences โ€” Little Rock, Arkansas
  • Loma Linda University Health Care โ€” Loma Linda, California
  • Children's Hospital Los Angeles โ€” Los Angeles, California
  • Valley Children's Hospital โ€” Madera, California
  • University California - Irvine โ€” Orange, California
  • University of California Davis Medical Center โ€” Sacramento, California
  • University of Colorado โ€” Aurora, Colorado
  • Medstar Georgetown University Hospital โ€” Washington D.C., District of Columbia
  • Children's National Hospital โ€” Washington D.C., District of Columbia
  • Nemour's Children's Hospital, Florida โ€” Orlando, Florida
  • All Children's Research Institute, Inc. โ€” St. Petersburg, Florida
  • Advent Health Orlando โ€” Winter Park, Florida
  • Rare Disease Research, LLC โ€” Atlanta, Georgia
  • University of Kentucky Medical Center โ€” Lexington, Kentucky
  • Norton Children's Hospital โ€” Louisville, Kentucky
  • Massachusetts General Hospital โ€” Boston, Massachusetts
  • University of Michigan Pediatric Rehabilitation Center โ€” Ann Arbor, Michigan
  • Helen DeVos Children's Hospital at Spectrum Health โ€” Grand Rapids, Michigan
  • Gillette Children's Specialty Healthcare โ€” Minnetonka, Minnesota
  • Mayo Clinic โ€” Rochester, Minnesota
  • Washington University;Wash Uni. Sch. Of Med โ€” St Louis, Missouri
  • NYU Hospital for Joint Diseases โ€” New York, New York
  • Columbia University Med Center โ€” New York, New York

๐Ÿ’ฐ Cost, Insurance & Patient Rights

  • 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
  • Routine Patient Care: Under federal law (ACA ยง 2709) and many state statutes, routine care costs are covered during participation.
  • Voluntary Participation: You may withdraw at any time without affecting your standard medical care.

๐Ÿ’ก How to Participate

  1. Check the checklist above to see if you may qualify.
  2. Review the official NIH record below to find the coordinating site.
  3. Ask about the visit schedule, what is covered at no cost, and any travel support.
  4. Confirm with your own doctor before making a decision.
๐Ÿ›๏ธ View Official NIH Record โ†—