The study objective is to determine the real-world safety and effectiveness of Vesemnogene lantuparvovec for the treatment of SMA.

The specific objectives are:

• To determine clinical effectiveness of Vesemnogene lantuparvovec therapy for SMA as evaluated by developmental gross motor milestone and survival.
• To describe the safety profile of Vesemnogene therapy for SMA as evaluated by adverse events reporting and laboratory tests, and monitoring of Adverse events of special interest.

This is an observational study designed to determine the real-world safety and effectiveness of Vesemnogene lantuparvovec therapy for SMA. Potential patients with genetic diagnosis of SMA will be evaluated for eligibility to undergo available gene therapies. Following the administration of Vesemnogene therapy, patient will be monitored for toxicity and response to treatment. No subjects will be withdrawn from the study, and subjects could freely drop out from the study anytime, simply by not showing up.

Inclusion Criteria:

1. Willing and able to give written informed consent for participation in the study.
2. Genetic confirmation of SMA (biallelic deletion or mutation of SMN1).
3. SMA clinical phenotype and condition, that in the opinion of the treating physician, treatment with Vesemnogene will likely be beneficial.
4. Absence of contraindications for spinal tap procedure or administration of intrathecal therapy.
5. Total AAV antibody titres < 1:20 as determined by ELISA assay.
6. Normal liver function (AST/ALT < 3XULN, Bilirubin <3.0 mg/dL).
7. Unable to access or failure to respond to currently available curative treatments for SMA.

Exclusion Criteria:

None