Clinical Research Directory

Study of Safety, Tolerability and Efficacy of GB221 in Infants With Spinal Muscular Atrophy Type 1

GB221 is a gene therapy that delivers a working SMN1 gene to the motor neurons of people with spinal muscular atrophy (SMA) Type 1. This study will evaluate the safety, tolerability and efficacy of GB221 in two groups: 1. participants aged from 2 weeks to younger than 12 months presenting with symptoms of SMA Type 1 who have never received a treatment OR are receiving the drug risdiplam 2. participants aged from 2 weeks to younger than 5 months who are at risk of developing SMA Type 1 (presymptomatic) and have never received treatment OR are receiving the drug risdiplam.

Psychological Evaluation of the Parental Experience of Newborn Screening for Infantile Spinal Muscular Atrophy in the Grand Est and Nouvelle-Aquitaine Regions

The systematic inclusion of spinal muscular atrophy (SMA) in France's neonatal genetic screening (NGS) program, scheduled for September 2025, represents a major milestone in public health. While this screening enables early detection and therapeutic intervention before symptom onset, it also raises psychological and ethical challenges that remain underexplored-particularly during the highly sensitive postpartum period. Currently, data on parental experiences following a positive SMA NGS result are scarce, fragmented, and largely derived from North American studies or from metabolic screening contexts. Early publications highlight high levels of parental anxiety, dissatisfaction with the quality of result disclosure, and difficulties in processing complex medical information in a short, emotionally charged timeframe. These findings underscore the need for a deeper understanding of the subjective processes at play in this situation. The PSYSMA project is designed as an ancillary study to the DEPISMA trial. Its aim is to retrospectively explore parents' lived experiences, their psychosocial support needs, and the impact of NGS on family dynamics and the parent-child relationship. Special attention is given to cases with uncertain results (e.g., ≥4 SMN2 copies without treatment) and false negatives, which remain poorly documented but may trigger unique forms of parental anxiety or adaptation. This research is justified by two main needs: * to guide public health policy toward integrating psychological support from the earliest stages of screening, in line with French National Health Authority (HAS) recommendations; * to generate new knowledge transferable to other genetic diseases that may be included in future neonatal screening programs. The overarching goal is to retrospectively investigate the psychological experience of parents confronted with a positive or false-negative SMA NGS result, in order to analyze its subjective, emotional, and relational effects, as well as related needs for psychological support. Study objectives : * Compare parental experiences according to the nature of the result (with or without treatment indication). * Identify psychosocial support needs, including for siblings. * Assess anxiety, depression, and post-traumatic symptoms associated with NGS. * Explore the broader impact on family functioning, particularly in relation to genetic counseling and communication within the extended family.

Long-term Follow-up Study of Patients Receiving Onasemnogene Abeparvovec-xioi

This is a long-term follow-up safety and efficacy study of participants in clinical trials for spinal muscular atrophy (SMA) who were treated with onasemnogene abeparvovec-xioi. Participants will roll over from their respective previous (parent) study into this long-term study for continuous monitoring of safety as well as monitoring of continued efficacy and durability of response to onasemnogene abeparvovec-xioi treatment.

Clinical Trial to Assess the Safety and Efficacy of EXG001-307 in Patients with Spinal Muscular Atrophy Type 1

The purpose of this trial is to evaluate safety and efficacy of intravenous delivery of EXG001-307 as a treatment of spinal muscular atrophy Type 1 (SMN1).