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Arvinas Presents Preclinical Data Supporting Mechanistic Synergies and Enhanced Antitumor Activity with the Combination of ARV-393 and Glofitamab at the 2025 American Society of Hematology Annual Meeting and Exposition
– Data support initiation of a combination cohort in the ongoing Phase 1 clinical trial to evaluate ARV-393 plus glofitamab as a chemotherapy-free combination
About this update from Arvinas, Inc.
[{"type":"text","content":"– Data support initiation of a combination cohort in the ongoing Phase 1 clinical trial to evaluate ARV-393 plus glofitamab as a chemotherapy-free combination approach in diffuse large B-cell lymphoma (DLBCL); initiation expected in 2026 – NEW HAVEN, Conn., Dec. 06, 2025 (GLOBE NEWSWIRE) -- Arvinas, Inc. (Nasdaq: ARVN), a clinical-stage biotechnology company creating a new class of drugs based on targeted protein degradation, today announced preclinical data for ARV-393, a PROTAC BCL6 degrader, in combination with glofitamab, a CD20×CD3 bispecific antibody, presented in a poster at the 67th American Society of Hematology (ASH®) Annual Meeting and Exposition, held December 6–9, 2025, in Orlando, Florida. In a humanized high-grade B-cell lymphoma (HGBCL) cell line–derived xenograft (CDX) model, the combination of ARV-393 and glofitamab resulted in significantly enhanced tumor growth inhibition (TGI) and increased rates of tumor regression compared with either agent alone. These preclinical data suggest mechanistic synergies between BCL6 degradation with ARV-393 and T-cell engagement. “Despite advances in treatment options, many patients with diffuse large B-cell lymphoma continue to face limited options once standard therapies fail. By pursuing a chemotherapy-free combination approach, we aim to address this significant unmet need and potentially offer patients a more targeted, better-tolerated therapeutic alternative,” said Noah Berkowitz, M.D., Ph.D., Chief Medical Officer, Arvinas. “The initiation of our Phase 1 combination clinical trial, planned for 2026, represents an important step toward defining the potential of ARV-393 in the treatment of this aggressive form of lymphoma.” Key highlights from the poster presentation include: In a humanized HGBCL CDX model ARV-393 (3 mg/kg) combined with glofitamab (0.15 mg/kg) achieved 81% TGI with concomitant dosing and 91% TGI with sequential dosing (ARV-393 followed by glofitamab), versus 38% for single-agent ARV-393 and 36% for glofitamab alone.At a higher ARV-393 dose (6 mg/kg) combined with glofitamab (0.15 mg/kg), an increase in tumor regressions was observed with concomitant (10/10 mice) and sequential dosing (7/8 mice) vs single-agent ARV-393 (5/11 mice) or glofitamab (0/11 mice).RNA sequencing and biomarker analyses revealed that ARV-393 upregulated CD20 expression and genes th...