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Delivers a new, working SMN1 gene. Scarlette lives with SMA and hasn’t received ITVISMA. She was compensated for her time.

Designed to treat the genetic root cause of SMA. Designed to work continuously to increase the amount of SMN protein

ITVISMA is a gene replacement therapy for people with spinal muscular atrophy (SMA). It delivers a new, working survival motor neuron 1 (SMN1) gene to replace the function of the missing or nonworking SMN1 gene in the body with only one dose.

Here’s how:

The new, working SMN1 gene is placed inside a delivery vehicle called a vector.

Icon of truck carrying an SMN1 gene

This vector delivers the new, working gene to motor neuron cells, enabling continuous production of survival motor neuron (SMN) protein.

Icon of gear with arrows circling it

By delivering this new, working gene, ITVISMA can stop the progressive loss of motor neurons, which are essential to muscle function.

Icon of a muscle

ITVISMA replaces the function of the SMN1 gene and is designed to continuously produce this essential protein.

ITVISMA is not a cure and can't reverse the damage that SMA has already caused to motor neurons.

Get to know the safety profile of this one-time treatment.