Disease-Modifying Treatments for Myasthenia Gravis

This study is designed to address the evidence gaps in a real-world setting and help patients with MG choose treatments that are best suited to them. It is a prospective, multicenter observational cohort study of comparative effectiveness of MG treatments, with a patient-centered primary outcome measure, to guide clinicians, patients and payers regarding the choice of treatment options for this chronic and serious disease. Primary: To compare the effectiveness of azathioprine (AZT) and mycophenolate mofetil (MMF). Secondary: To compare the outcomes in patients receiving an adequate dose and duration of AZT or MMF over the 2-3 year study period, vs. patients not receiving adequate doses and duration of these agents