A Study Evaluating the Effectiveness and Safety of Risdiplam Administered as an Early Intervention in Pediatric Participants With Spinal Muscular Atrophy After Gene Therapy
A Phase IV Open-Label Study Evaluating the Effectiveness and Safety of Risdiplam Administered as an Early Intervention in Pediatric Patients With Spinal Muscular Atrophy After Gene Therapy
Hoffmann-La Roche
28 participants
May 30, 2024
INTERVENTIONAL
Conditions
Summary
This is an open-label, single-arm, multicenter clinical study to evaluate the effectiveness and safety of risdiplam administered as an early intervention in pediatric participants with spinal muscular atrophy (SMA) and 2 SMN2 copies who have previously received onasemnogene abeparvovec. Participants are children \< 2 years of age genetically diagnosed with SMA.
Eligibility
Inclusion Criteria7
- <2 years of age at the time of informed consent
- Confirmed diagnosis of 5q-autosomal recessive SMA, including genetic confirmation of homozygous deletion or compound heterozygosity predictive of loss of function of the Survival of Motor Neuron 1 (SMN1) gene
- Confirmed presence of two SMN2 gene copies as documented through laboratory testing
- Administration of onasemnogene abeparvovec pre-symptomatically or post-symptomatically
- Has received onasemnogene abeparvovec for SMA no less than 13 weeks, but not more than months 30 weeks, prior to enrollment
- If treated with risdiplam prior to onasemnogene abeparvovec, risdiplam treatment must not have exceeded 3 weeks and must be discontinued 1 day prior to onasemnogene abeparvovec administration
- Has, in the opinion of the investigator, not experienced clinically significant decline in function from the time of onasemnogene abeparvovec administration
Exclusion Criteria9
- Previous or current enrolment in investigational study prior to initiation of study treatment
- Any unresolved standard-of-care laboratory abnormalities per the onasemnogene abeparvovec prescribing information
- Concomitant or previous administration of an SMN2-targeting antisense oligonucleotide
- Concomitant or previous use of an anti-myostatin agent
- Participants requiring invasive ventilation or tracheostomy
- Participants requiring awake non-invasive ventilation or with awake hypoxemia (Arterial Oxygen Saturation \[SaO2\] <95%) with or without ventilator support
- Presence of feeding tube and an OrSAT score of 0
- Hospitalization for pulmonary event within the last 2 months, or any planned hospitalization at the time of screening
- Any major illness requiring hospitalization within 1 month before the screening examination or any febrile illness within 1 week prior to screening and up to first dose administration.
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Interventions
Participants will receive risdiplam orally at the currently approved dose. The dose should be adapted for weight and age.
Locations(16)
View Full Details on ClinicalTrials.gov
For the most up-to-date information, visit the official listing.
NCT05861986