RecruitingPhase 3Drug trialPhase 3 Extension Study to Evaluate Long-term Safety of Ianalumab in Participants With Systemic Lupus Erythematosus (SIRIUS-SLE Extension).The purpose of this study is to evaluate long-term safety and tolerability of ianalumab in participants with systemic lupus erythematosus who have previously completed the treatment period in one of the two SIRIUS-SLE core studies (CVAY736F12301 or CVAY736F12302).