Association of Disease-Modifying Treatment and Anti-CD20 Infusion Timing With Humoral Response to 2 SARS-CoV-2 Vaccines in Patients With Multiple Sclerosis

Studies have shown the messenger RNA (mRNA) vaccine against SARS-CoV-2 is safe in multiple sclerosis (MS), but the humoral response to the vaccine was markedly reduced in patients treated with fingolimod and ocrelizumab. We aimed to replicate these findings, test other disease-modifying treatments (DMTs), and investigate whether delaying anti-CD20 infusions can potentiate IgG production following vaccination.