Nusinersen in adults with spinal muscular atrophy


  • Nusinersen is associated with improvements in motor and pulmonary function in adults with spinal muscular atrophy (SMA).

Why this matters

  • Individuals with SMA lack functional copies of SMN1, resulting in a deficiency of survival motor neuron (SMN) protein; SMN2 generates SMN protein less efficiently than SM1.

  • Nusinersen, an antisense oligonucleotide that modifies SMN2 RNA splicing and increases protein production, improved motor function and survival in childhood-onset SMA; however, it has not been trialed in adults.