A Phase 2, Randomized, Double-blind, Multicenter, Placebo-controlled Study to Evaluate the Efficacy and Safety of Maintenance Ublituximab Treatment Following Induction With Efgartigimod Administration in Adults With Myasthenia Gravis

Inclusion Criteria: 1. Documentation of MG diagnosis. 2. Eligible for treatment with efgartigimod per effective local product label, confirmed by serological testing at screening. 3. MG-ADL score at the time of screening more than or equal to (≥) 6 and less than or equal to (≤) 10 with more than (\>) 50 percent (%) of this score attributed to non-ocular items, or an MG-ADL score ≥ 11. Exclusion Criteria: 1. Active chronic (or stable but treated with immune therapy) disease of the immune system other than MG (e.g., rheumatoid arthritis, scleroderma, Sjögren's syndrome, Crohn's disease, ulcer…