Regeneron(US:REGN) Globenewswireยท2025-05-22 21:00Core Insights - Regeneron Pharmaceuticals announced initial results from the Phase 1b LINKER-MM2 trial evaluating linvoseltamab in combination with proteasome inhibitors for relapsed/refractory multiple myeloma, showing high response rates [1][2] Summary by Sections Trial Overview - The LINKER-MM2 trial is a Phase 1b, open-label study assessing linvoseltamab combined with carfilzomib or bortezomib in patients with relapsed/refractory multiple myeloma who have progressed after at least two lines of therapy [9][11] Efficacy Results - In the carfilzomib cohort, 90% objective response rate (ORR) was observed with 76% achieving complete response (CR) after a median follow-up of 15 months [3] - In the bortezomib cohort, an 85% ORR was reported with 50% achieving CR after a median follow-up of 9 months [4] Safety Profile - Common treatment-emergent adverse events (TEAEs) in the carfilzomib cohort included neutropenia (65%), cytokine release syndrome (CRS; 61%), and infections (91%) [3] - In the bortezomib cohort, the most common TEAEs were CRS (58%), neutropenia (54%), and infections (75%) [5] Future Directions - A registrational, randomized Phase 3 trial is planned to investigate the combination of linvoseltamab and carfilzomib against standard-of-care treatments [3] - The FDA is reviewing the Biologics License Application for linvoseltamab in the U.S., with a target action date of July 10, 2025 [7] Market Context - Multiple myeloma is the second most common blood cancer, with over 187,000 new cases diagnosed globally each year [8] - Despite treatment advances, multiple myeloma remains incurable, necessitating ongoing research and development of new therapies [8]