#MITIGATE subgroup analysis: Inebilizumab reduced flares & boosted remission across all #IgG4-RD subgroups. HR for flare vs PBO: 0.12-0.16 across sex/race. Similar results for all subgroups in achieving flare-free, treatment-free complete remission. @RheumNow #EULAR2025 #OP0189