Study to Assess the Efficacy and Safety of IMVT-1402 in Participants With Mild to Severe Generalized Myasthenia Gravis

Who May Qualify: - Participants with the ability to understand the requirements of the trial, provide written willing to sign a consent form, and comply with the trial protocol procedures. - Have mild to severe gMG by Myasthenia Gravis Foundation of America (MGFA) classification of Class II, III, or IVa at the Screening Visit - Have an MG activities of daily living (MG-ADL) score of ≥ 6 at the Screening Visit and Baseline Visit (Day 1) Additional inclusion criteria are defined in the protocol. Who Should NOT Join This Trial: - Have experienced myasthenic crisis within 12 weeks prior to the Screening Visit. - Have had a thymectomy performed \< 6 months prior to the Screening Visit or have a planned thymectomy during the study - Have any active or untreated malignant thymoma Additional exclusion criteria are defined in the protocol. Always talk to your doctor about whether this trial is right for you.