Characterizing new patient types with spinal muscular atrophy treated with SMN therapies

Characterization of New Phenotypes of Patients With Spinal Muscular Atrophy Treated With SMN Restoring Therapy

Not applicable Interventional Hospices Civils de Lyon · NCT06321965

This study is trying to understand how different types of spinal muscular atrophy in children under 16 respond to new treatments that boost SMN protein levels, while also looking at their muscle strength, thinking skills, and heart health over two years.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment60 (estimated)
Ages0 Years to 16 Years
SexAll
SponsorHospices Civils de Lyon Academic / other
Locations8 sites (Bron, Rhone and 7 other locations)
Trial IDNCT06321965 on ClinicalTrials.gov

What this trial studies

This study aims to characterize new phenotypes of patients with spinal muscular atrophy (SMA) who are being treated with therapies that restore SMN protein expression, such as nusinersen, risdiplam, and onasemnogene abeparvovec. It will involve prospectively following children under 16 years old with genetically confirmed SMA for two years, evaluating their muscle function, cognitive abilities, and cardiac health. Additionally, the study will assess the relevance of various assessment tools for monitoring this population and collect data on the economic impact of SMA treatment in France.

Who should consider this trial

Good fit: Ideal candidates are children aged 0 to 15 years with genetically confirmed SMA who are receiving SMN restoring therapies.

Not a fit: Patients with other significant neurological diseases or conditions that interfere with SMA assessment may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance understanding of SMA and improve treatment strategies for affected children.

How similar studies have performed: Other studies have shown success in characterizing SMA phenotypes and evaluating treatment impacts, making this approach both relevant and timely.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Genetically confirmed infantile or juvenile spinal muscular atrophy
* Treated with a therapy that restores SMN protein expression (e.g. nusinersen, risdiplam, onasemnogene abeparvovec)
* Aged 0 to 15 years inclusive
* Informed consent signed by both parent(s)/legal guardian(s) and patient's assent
* Affiliated or beneficiary of a health insurance plan\*. \* for inclusion in France

Exclusion Criteria:

* Other condition likely to interfere significantly with ASI assessment and clearly unrelated to the disease
* Other associated neurological disease
* Current pregnancy or breast-feeding (a pregnancy test will also be performed at inclusion).

Please note that patients with a specific contraindication to MRI (i.e. metallic foreign body, claustrophobia and other reasons determined by the investigators) will be allowed to participate in the study, but MRI will not be performed.

Where this trial is running

Bron, Rhone and 7 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Spinal Muscular AtrophyNatural historySpinal Muscular atrophyRisdiplamOnasemnogene abeparvovecNusinersen
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.