Summary
This trial will study the efficacy and safety of taldefgrobep alfa as an adjunctive therapy for participants who are already taking a stable dose of nusinersen or risdiplam or have a history of onasemnogene abeparvovec-xioi, compared to placebo.
Conditions
Spinal Muscular Atrophy, Neuromuscular Diseases, SMA
Recruitment Status
Active, not recruiting
Detailed Description
Myostatin is a negative regulator of muscle growth. Blocking myostatin activity has been shown to increase muscle size and function. Taldefgrobep alfa directly blocks myostatin activity and was well tolerated in other clinical studies. In combination with medications that increase the amount of SMN protein in the body, taldefgrobep alfa has the potential to further improve motor function and clinical measures for people living with SMA.
Eligibility Criteria
Key Inclusion Criteria:
Spinal Muscular Atrophy confirmed by genetic diagnosis of 5q-autosomal recessive SMA as well as SMN2 copy number
Ambulant or Non-Ambulant
Treated with an SMA disease-modifying therapy and anticipated to remain on that same treatment regimen and dose throughout the trial including nusinersen, risdiplam, and/or a history of onasemnogene abeparvovec
Key Exclusion Criteria:
Cannot have previously taken anti-myostatin therapies
Must weigh at least 15kg
Respiratory insufficiency, defined by the medical necessity for invasive or non-invasive ventilation for daytime treatment while awake (use overnight or during daytime naps is acceptable)
History of Spinal Fusion within 6 months of Screening. MAGEC rod nonsurgical adjustments are allowed during the study
Presence of an implanted shunt for the drainage of CSF or an implanted central nervous system (CNS) catheter
Intervention
Intervention Type
Intervention Name
Drug
taldefgrobep alfa
Drug
Placebo
Drug
taldefgrobep alfa
Phase
Phase 3
Gender
All
Min Age
4 Years
Max Age
21 Years
Download Date
November 7, 2023
Principal Investigator
Leslie Hayes, MD
This field has been modified from ClinicalTrials.gov to show a contact specific to Boston Children's.
Primary Contact Information
kristina.nedeljkovic@childrens.harvard.edu
This field has been modified from ClinicalTrials.gov to show a contact specific to Boston Children's.
For more information on this trial, visit clinicaltrials.gov.
Contact
For more information and to contact the study team: