Onasemnogene Abeparvovec

Drug

Also known as: Zolgensma

Drug Profile

Onasemnogene abeparvovec is an AAV vector-based SMN1 gene replacement therapy used in spinal muscular atrophy treatment. In the U.S., FDA approved the intrathecal formulation onasemnogene abeparvovec-brve (Itvisma) in November 2025 for patients aged 2 years and older with confirmed SMN1 mutation. FDA also notes the active ingredient is identical to intravenous Zolgensma formulation used in younger pediatric SMA populations.

Drug Class
Adeno-associated virus (AAV) vector-based gene therapy
Approval Status
FDA approved (ITVISMA approval on November 24, 2025)
Mechanism of Action
Single-dose CNS-directed gene replacement that restores SMN protein production by targeting the genetic root cause of SMA
Brand Names
  • ITVISMA
  • Zolgensma
Indications
  • \Spinal muscular atrophy in adult and pediatric patients 2 years of age and older with confirmed SMN1 mutation (intrathecal onasemnogene abeparvovec-brve/ITVISMA)\
  • \SMA in pediatric patients less than 2 years of age with bi-allelic SMN1 mutations (intravenous onasemnogene abeparvovec-xioi/Zolgensma)\

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NCT ID Title Status Phase
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