NCT05861999

Brief Summary

This is an open-label, single-arm, multicenter clinical study to evaluate the effectiveness and safety of risdiplam administered in pediatric participants with SMA and 2 SMN2 copies who previously received onasemnogene abeparvovec and experience a plateau or decline in function. Participants to be enrolled are children \<2 years of age genetically diagnosed with SMA.

Trial Health

83
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
28

participants targeted

Target at below P25 for phase_4

Timeline
35mo left

Started Aug 2024

Longer than P75 for phase_4

Geographic Reach
6 countries

19 active sites

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress37%
Aug 2024Mar 2029

First Submitted

Initial submission to the registry

May 8, 2023

Completed
9 days until next milestone

First Posted

Study publicly available on registry

May 17, 2023

Completed
1.2 years until next milestone

Study Start

First participant enrolled

August 14, 2024

Completed
3.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 31, 2028

Expected
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

March 31, 2029

Last Updated

April 13, 2026

Status Verified

April 1, 2026

Enrollment Period

3.6 years

First QC Date

May 8, 2023

Last Update Submit

April 10, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change from Baseline in the Raw Score of Bayley Scales of Infant and Toddler Development - Third Edition (BSID-III) Gross Motor Score at 72 Weeks of Risdiplam Treatment

    The BSID-III is a standardized assessment commonly used to evaluate developmental functioning of infants and young children between 1 month and 42 months of age. The gross motor scale measures the movement of the limbs and torso. Items assess static positioning (e.g., sitting, standing); dynamic movement, including locomotion and coordination; balance; and motor planning. The gross motor scale consists of 72 items scored at 0 (unable to perform) or 1 (criteria for item achieved). A higher raw score indicates improvement.

    Baseline, Week 72

Secondary Outcomes (3)

  • Percentage of Participants With Adverse Events

    Up to 120 weeks

  • Percentage of Participants With Serious Adverse Events

    Up to 120 weeks

  • Percentage of Participants With Treatment Discontinuation Due to Adverse Events

    Up to 120 weeks

Other Outcomes (11)

  • Change from Baseline in Bulbar/Swallowing Function Assessment as Measured by the Oral and Swallowing Abilities Tool (OrSAT) at 72 Weeks of Risdiplam Treatment and Over Time

    From baseline up to Week 120

  • Change in Swallowing Function Assessment as Measured by the Pediatric Functional Oral Intake Scale (p-FOIS) Over Time

    From baseline up to Week 120

  • Change from Baseline in the Raw Score of BSID-III Gross Motor Score Over Time Under Risdiplam Treatment

    From baseline up to Week 120

  • +8 more other outcomes

Study Arms (1)

Risdiplam

EXPERIMENTAL

Participants will receive risdiplam orally once daily for 72 weeks (Treatment Period). The Treatment Period will be followed by a 1-year Treatment Extension Period for a total study duration of 120 weeks (approximately 2.5 years) for each participant enrolled.

Drug: Risdiplam

Interventions

Participants will receive risdiplam orally at the currently approved dose. The dose should be adapted for weight and age.

Also known as: RO7034067
Risdiplam

Eligibility Criteria

Age3 Months - 24 Months
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17)

You may qualify if:

  • \<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 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.
  • In the opinion of the investigator, has demonstrated a plateau or decline in function post-gene therapy (with a duration of 26 weeks or less) documented by 2 individual time points in the functions as follows: swallowing AND one additional function/ability (respiratory, motor function, other) per appropriate expectation.

You may not qualify if:

  • 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
  • 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.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (19)

University of Arkansas for Medical Sciences

Little Rock, Arkansas, 72103, United States

RECRUITING

Valley Children's Hospital

Madera, California, 93636, United States

RECRUITING

Stanford Univ Medical Center

Palo Alto, California, 94304, United States

RECRUITING

Children's Hospital of Colorado

Aurora, Colorado, 80045, United States

RECRUITING

University of Florida Pediatrics

Gainesville, Florida, 32610, United States

RECRUITING

Children's Healthcare of Atlanta Center for Advanced Pediatrics

Atlanta, Georgia, 30329-2309, United States

RECRUITING

Helen DeVos Children's Hospital at Spectrum Health

Grand Rapids, Michigan, 49503, United States

RECRUITING

Children'S Hospital of Philadelphia

Philadelphia, Pennsylvania, 19104, United States

RECRUITING

University of Texas Southwestern Medical Center

Dallas, Texas, 75390, United States

RECRUITING

Children's Hospital of the King's Daughter

Norfolk, Virginia, 23510, United States

RECRUITING

Charité - Universitätsmedizin Berlin SPZ Abteilung Neuropaediatrie

Berlin, 13353, Germany

RECRUITING

UKGM Standort Gießen

Giessen, 35392, Germany

RECRUITING

Soroka Medical Center

Beersheba, 8410101, Israel

RECRUITING

Schneider Children's Medical Center of Israel

Petah Tikva, 4920235, Israel

RECRUITING

Sourasky MC, Dana-Dwek Children's Hospital

Tel Aviv, 6423906, Israel

RECRUITING

Uniwersyteckie Centrum Kliniczne

Gdansk, 80-952, Poland

RECRUITING

Instytut Pomnik Centrum Zdrowia Dziecka

Warsaw, 04-730, Poland

RECRUITING

Sidra Medicine

Al Rayyan, Qatar

RECRUITING

Great Ormond Street Hospital For Children

London, WC1N 3JH, United Kingdom

RECRUITING

MeSH Terms

Conditions

Muscular Atrophy, Spinal

Interventions

Risdiplam

Condition Hierarchy (Ancestors)

Spinal Cord DiseasesCentral Nervous System DiseasesNervous System DiseasesMotor Neuron DiseaseNeurodegenerative DiseasesNeuromuscular Diseases

Study Officials

  • Clinical Trials

    Hoffmann-La Roche

    STUDY DIRECTOR

Central Study Contacts

Reference Study ID Number: BN44621 https://forpatients.roche.com/

CONTACT

Study Design

Study Type
interventional
Phase
phase 4
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 8, 2023

First Posted

May 17, 2023

Study Start

August 14, 2024

Primary Completion (Estimated)

March 31, 2028

Study Completion (Estimated)

March 31, 2029

Last Updated

April 13, 2026

Record last verified: 2026-04

Data Sharing

IPD Sharing
Will not share

This clinical trial evaluates treatment of a rare genetic disease in a small cohort of participants. No data is planned to be shared in order to protect and maintain participant privacy/confidentiality.

Locations