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Arvinas Presents Preclinical Data for PROTAC BCL6 Degrader, ARV-393, at the European Hematology Association 2025 Congress
– ARV-393 demonstrated significant single-agent activity in models of nodal T-follicular helper cell lymphoma, angioimmunoblastic-type (also known as AITL)
About this update from Arvinas, Inc.
[{"type":"text","content":"– ARV-393 demonstrated significant single-agent activity in models of nodal T-follicular helper cell lymphoma, angioimmunoblastic-type (also known as AITL) and transformed follicular lymphoma – – In combination with small molecule inhibitors, ARV-393 demonstrated enhanced tumor growth inhibition, including tumor regressions, in models of aggressive diffuse large B-cell lymphoma (DLBCL) – NEW HAVEN, Conn., June 13, 2025 (GLOBE NEWSWIRE) -- Arvinas, Inc. (Nasdaq: ARVN), a clinical-stage biotechnology company working to develop a new class of drugs based on targeted protein degradation, today presented data from preclinical studies of ARV-393, the company’s investigational PROteolysis TArgeting Chimera (PROTAC) B-cell lymphoma 6 protein (BCL6) degrader. BCL6 is a transcriptional repressor protein and a known driver of B-cell lymphomas. ARV-393 demonstrated significant single-agent activity in a patient derived xenograft (PDX) model of nodal T-follicular helper cell lymphoma, angioimmunoblastic-type (nTFHL-AI also known as AITL) and PDX models of transformed follicular lymphoma (tFL). In combination with oral small molecule inhibitors (SMIs), ARV-393 demonstrated enhanced antitumor activity, including tumor regressions, in cell line-derived xenograft (CDX) models of high-grade B-cell lymphoma (HGBCL) and aggressive diffuse large B-cell lymphoma (DLBCL). The results from these preclinical studies were shared at the European Hematology Association (EHA) 2025 Congress in Milan, Italy. Key findings from the preclinical studies included: Single-agent ARV-393 significantly reduced tumor burden in peripheral blood, bone marrow and spleen in a systemic PDX model of nTFHL-AI derived from a patient who relapsed post chemotherapy. This is potentially the first preclinical evidence of anti-tumor activity with an efficacious BCL6-targeted small-molecule degrader in a human nTFHL-AI model.ARV-393 monotherapy treatment resulted in robust (≥95%) tumor growth inhibition (TGI) in two PDX models of tFL.ARV-393 in combination with 5 classes of SMIs targeting potentially cooperative oncogenic drivers (tazemetostat, palbociclib, everolimus, acalabrutinib, or venetoclax) demonstrated increased TGI in CDX models of HGBCL and aggressive DLBCL compared with the respective monotherapy treatments. Tumor regressions were observed when ARV-393 was combined with ...