Long-Term Safety & Efficacy of Apitegromab in Patients With SMA Who Completed Previous Trials of Apitegromab

NCT05626855 · Status: ACTIVE_NOT_RECRUITING · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 238

Last updated 2025-05-25

No results posted yet for this study

Summary

The ONYX study is an Open-Label, Multicenter, Extension study that will evaluate the long-term safety and efficacy of Apitegromab in Patients with Type 2 and Type 3 SMA who have completed TOPAZ or SAPPHIRE.

Conditions

Interventions

DRUG

Apitegromab

Apitegromab (SRK-015) is an investigational, fully human immunoglobulin G4 monoclonal antibody that specifically binds to human proforms (i.e., inactive precursor forms) of myostatin, pro- and latent- myostatin, with high affinity, inhibiting activation of myostatin, a negative regulator of muscle growth and strength.

Sponsors & Collaborators

  • Scholar Rock, Inc.

    lead INDUSTRY

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
2 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2023-04-17
Primary Completion
2026-11-01
Completion
2029-05-02
FDA Drug
Yes

Countries

  • United States
  • Belgium
  • France
  • Germany
  • Italy
  • Netherlands
  • Poland
  • Spain
  • United Kingdom

Study Locations

More Related Trials

Entities

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05626855 on ClinicalTrials.gov