Transitioning immunotherapy in neuromyelitis optica spectrum disorder - when and how to switch.

Clinical experience and retrospective studies of real-world outcomes and complications associated with therapy, as well as therapy transitions, will help inform practice patterns moving forward. Strategies for transitioning between immunotherapies should consider the pharmacokinetics and the onset of clinical efficacy for each drug. Despite all the currently approved preventative immunotherapies, there are limited treatment options for those suffering from significant disability after their initial attack, and remyelination therapies are an important area for future research.