A wide variety of practices concerning alternative methods of repeated intrathecal injection of nusinersen in SMA

American researchers conducted a meta-analysis of implantable devices designed to facilitate the intrathecal administration of nusinersen, one of three innovative therapies commonly used for SMA:

  • the authors searched various medical literature databases using the PRISMA methodology,
  • eight studies involving a total of 74 patients with SMA were selected,
  • the various devices were always used off-label and were very diverse, both in terms of the method of implantation and the anatomical region considered,
  • adverse effects were common (up to 27%) and required repeat surgery in nine patients.

This study reveals a lack of consensus on the indications for these devices, which could hinder their widespread use.

 

Surgical success of subcutaneous systems for intrathecal nusinersen delivery in spinal muscular atrophy: A systematic review and meta-analysis. Lu VM, Vazquez S, Roach CS, Niazi TN. Clin Neurol Neurosurg. 2025 Oct.