On February 26, 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 odronextamab in relapsed/refractory (R/R) follicular lymphoma (FL) after two or more lines of systemic therapy (Press release, Regeneron, FEB 26, 2025, View Source [SID1234650637]). The target action date for the FDA decision is July 30, 2025 .
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Acceptance of the BLA resubmission follows the achievement of an FDA-mandated enrollment target for the Phase 3 confirmatory trial in R/R FL ( OLYMPIA -1). This was the sole approvability issue identified by the FDA in the complete response letter associated with the previous submission. The BLA resubmission is supported by data from the Phase 1 and pivotal Phase 2 trials (ELM-1 and ELM-2), which demonstrated an overall response rate of 80% (n=103), with 74% (n=95) achieving a complete response. Serious adverse events occurred in 67% of patients; those occurring in ≥10% of patients included cytokine release syndrome, COVID-19 and pneumonia.
Odronextamab is approved as Ordspono in the European Union for the treatment of R/R FL or diffuse large B-cell lymphoma (DLBCL) after two or more lines of systemic therapy although its safety and efficacy have not been fully evaluated by any other regulatory authority. For complete product information, please see the Summary of Product Characteristics that can be found on www.ema.europa.eu.
About FL
FL is one of the most common subtypes of B-cell non-Hodgkin lymphoma (B-NHL). While FL is a slow-growing subtype, it is an incurable disease, and most patients will relapse after initial treatment. It is estimated that approximately 122,000 FL cases are diagnosed globally every year with more than 13,600 FL cases anticipated in the U.S. in 2025.
About the Odronextamab Clinical Development Program
Odronextamab is a CD20xCD3 bispecific antibody designed to bridge CD20 on cancer cells with CD3-expressing T cells to facilitate local T-cell activation and cancer-cell killing.
ELM-1 is an ongoing, open-label, multicenter Phase 1 trial to investigate the safety and tolerability of odronextamab in patients with CD20+ B-cell malignancies previously treated with CD20-directed antibody therapy.
ELM-2 is an ongoing, open-label, multicenter Phase 2 trial investigating odronextamab across five independent disease-specific cohorts, including DLBCL, FL, mantle cell lymphoma, marginal zone lymphoma and other subtypes of B-NHL. The primary endpoint is objective response rate according to the Lugano Classification as assessed by independent review committee, and secondary endpoints include complete response, progression-free survival, overall survival and duration of response. The pivotal results in FL were published in the Annals of Oncology.
Odronextamab is being investigated in a broad clinical development program exploring its use as a monotherapy as well as in combination regimens in several types of B-NHLs in earlier lines of therapy. In FL, odronextamab is being evaluated as a monotherapy against rituximab plus standard-of-care chemotherapies in a Phase 3 confirmatory trial ( OLYMPIA -1) and in combination with chemotherapy against rituximab plus standard-of-care chemotherapies in a separate Phase 3 trial ( OLYMPIA -2). For more information on Regeneron’s clinical trials in blood cancer, visit the clinical trials website or contact via [email protected] or +1 844-734-6643.