Results of a phase I gene therapy trial in giant axon neuropathy

The dose escalation trial evaluated the effects of a single intrathecal injection of four escalating doses of scAAV9/JeT-GAN in 14 patients over the age of six with GAN-related giant axon neuropathy.

  • There were very few serious side-effects attributable to the treatment during the trial’s average follow-up of five and a half years.
  • One of the doses tested resulted in a significant slowing of muscle damage as measured by MFM-32.
  • Partial restoration of sensory response in the upper limbs was observed in six participants six to 24 months after treatment.

 

Intrathecal Gene Therapy for Giant Axonal Neuropathy. Bharucha-Goebel DX, Todd JJ, Saade D et al. N Engl J Med. 2024 Mar