On February 11, 2025 Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN) reported that the U.S. Food and Drug Administration (FDA) has accepted for review the resubmission of the Biologics License Application (BLA) for linvoseltamab for the treatment of adult patients with relapsed/refractory (R/R) multiple myeloma (MM) who have received at least four prior lines of therapy or those who received three prior lines of therapy and are refractory to the last line of therapy (Press release, Regeneron, FEB 11, 2025, View Source [SID1234650174]). The target action date for the FDA decision is July 10, 2025.
Schedule your 30 min Free 1stOncology Demo!
Discover why more than 1,500 members use 1stOncology™ to excel in:
Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing
Schedule Your 30 min Free Demo!
Acceptance of the BLA resubmission follows the resolution of third-party fill/finish manufacturing issues, which was the sole approvability issue identified by the FDA in the previous submission. The BLA is supported by data from the pivotal LINKER-MM1 trial investigating linvoseltamab in R/R MM, and linvoseltamab is also under review by the European Medicines Agency (EMA) for the same patient population.
Linvoseltamab is investigational and has not been approved by any regulatory authority.
About Multiple Myeloma
As the second most common blood cancer, there are over 187,000 new cases of MM diagnosed globally every year, with more than 36,000 diagnosed and 12,000 deaths anticipated in the U.S. in 2025. In the U.S., there are approximately 8,000 people who have MM that has progressed after three lines of therapy, and 4,000 whose disease has progressed after four or more therapies. The disease is characterized by the proliferation of cancerous plasma cells (MM cells) that crowd out healthy blood cells in the bone marrow, infiltrate other tissues and cause potentially life-threatening organ injury. Despite treatment advances, MM is not curable and while current treatments are able to slow progression of the cancer, most patients will ultimately experience cancer progression and require additional therapies.
About the Linvoseltamab Clinical Development Program
Linvoseltamab is an investigational BCMAxCD3 bispecific antibody designed to bridge B-cell maturation antigen (BCMA) on MM cells with CD3-expressing T cells to facilitate T-cell activation and cancer-cell killing.
The ongoing, open-label, multicenter Phase 1/2 dose-escalation and dose-expansion LINKER-MM1 trial is investigating linvoseltamab in 282 enrolled patients with relapsed/refractory MM. The Phase 1 dose-escalation portion of the trial – which is now complete – primarily assessed safety, tolerability and dose-limiting toxicities across nine dose levels of linvoseltamab and explored different administration regimens. The ongoing Phase 2 dose expansion portion is assessing the safety and anti-tumor activity of linvoseltamab, with the primary endpoint of objective response rate. Key secondary endpoints include duration of response, progression-free survival, rate of minimum residual disease negative status and overall survival.
Eligibility in the Phase 2 portion requires patients to have received at least three prior lines of therapy or have triple-class refractory MM. Linvoseltamab is administered with an initial step-up dosing regimen followed by the full 200 mg dose administered weekly. At week 16, all patients transition to every two-week dosing. A response-adapted regimen further enables patients to shift to every four-week dosing if they achieve a very good partial response or better and have completed at least 24 weeks of therapy. The regimen requires a total of two 24-hour hospitalizations for safety monitoring.
Linvoseltamab is being investigated in a broad clinical development program exploring its use as a monotherapy as well as in combination regimens across different lines of therapy in MM, including earlier lines of treatment, as well as plasma cell precursor disorders. They include evaluating linvoseltamab in a Phase 1b trial (LINKER-MM2) in combination with other cancer treatments in R/R MM as well as a Phase 3 confirmatory trial (LINKER-MM3) as a monotherapy in R/R MM. For more information on Regeneron’s clinical trials in blood cancer, visit the clinical trials website, or contact via [email protected] or 844-734-6643.