Phase 2 trial concludes in favour of subcutaneous administration of immunoglobulins in myasthenia gravis

The background treatment of myasthenia gravis (MG) requires, in some cases, the administration of polyvalent immunoglobulins. US clinicians report the results of a multicentre phase 2 trial comparing the efficacy and safety of subcutaneous versus conventional intravenous immunoglobulin:

  • 23 patients with myasthenia with autoantibodies to the acetylcholine receptor participated in the study,
  • the trial was conducted over a three-month period, with symptom stability judged by a quantitative MG score,
  • the authors recommend adjusting the effective dose of immunoglobulin by an additional 20% to achieve comparable efficacy.

With the same efficacy and tolerance, subcutaneous administration seems to be a promising avenue for immunoglobulin treatment, at least in myasthenia.

 

Phase 2 trial in acetylcholine receptor antibody-positive myasthenia gravis of transition from intravenous to subcutaneous immunoglobulin: The MGSCIg study. Pasnoor M, Bril V, Levine T et al. Eur J Neurol. 2023 Feb 13.