Home CompaniesBoehringer Ingelheim Boehringer Ingelheim and OSE Immunotherapeutics To Present Biomarker Analyses from the Phase 1 Clinical Trial with First-in-Class SIRPα Inhibitor BI 765063 in Advanced Solid Tumors

Boehringer Ingelheim and OSE Immunotherapeutics To Present Biomarker Analyses from the Phase 1 Clinical Trial with First-in-Class SIRPα Inhibitor BI 765063 in Advanced Solid Tumors

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Boehringer Ingelheim

Summary :

OSE Immunotherapeutics (ISIN: FR0012127173; Mnemo: OSE), today announced that early biomarker analyses from the ongoing Phase 1 clinical trial with SIRPα inhibitor BI 765063 in patients with advanced solid tumors have been selected for presentation  in an in-person poster session at the American Association Cancer for Research (AACR) annual meeting to be held on April 8 – 13, 2022 in New Orleans, Louisiana.

The goal of the biomarker analyses from the Phase 1 trial with first-in-class SIRPα inhibitor BI 765063 was to characterize the impact of the product on peripheral blood immune cells (PBMCs), as well as on the tumor microenvironment.

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The early biomarker analyses of paired tumor biopsies from patients with a wide range of solid tumors and treated with BI 765063 show encouraging signs of mode-of-action related changes, both in peripheral blood and in the tumor, in particular an increase in CD8 T-cell infiltration and activation.

These new data confirm preclinical results showing that T lymphocytes initially blocked at the tumor’s margin could penetrate efficiently into the tumor when blocking SIRPα in parallel. Crossing this barrier is associated with positive modulation of macrophage expression and secretion of chemokines allowing the penetration of T lymphocytes into the heart of the tumor.

The Phase 1 clinical trial with BI 765063 is being conducted by OSE Immunotherapeutics as part of a collaboration and license agreement under which Boehringer Ingelheim obtained exclusive rights to BI 765063.

ABOUT BI 765063
BI 765063, a monoclonal antibody antagonist of the key myeloid cell checkpoint inhibitor SIRPα selectively blocks the SIRPα/CD47 interaction and thus increases the function of myeloid cells: phagocytosis of tumor cells by macrophages and presentation of tumor antigens by dendritic cells. BI 765063 is also a selective inhibitor of SIRPα that by virtue of this specificity and lack of binding and blocking of a very similar receptor called SIRPɣ, ensures that response of T lymphocytes is retained to enable T cell-mediated tumor killing.

ABOUT OSE Immunotherapeutics
OSE Immunotherapeutics is an integrated biotechnology company focused on developing and partnering therapies to control the immune system for immuno-oncology and autoimmune diseases. Its balanced first-in-class clinical and preclinical portfolio has a diversified risk profile:

Immuno-Oncology first-in-class products

  • Tedopi® (innovative combination of neoepitopes): the company’s most advanced product; positive results for Phase 3 trial (Atalante 1) in Non-Small Cell Lung Cancer patients in secondary resistance after checkpoint inhibitor failure.
    Other ongoing combination trials sponsored by cooperative clinical research groups in oncology:
    Phase 2 in pancreatic cancer (TEDOPaM), sponsor GERCOR.
    Phase 2 in ovary cancer, in combination with pembrolizumab (TEDOVA), sponsor ARCAGY-GINECO.
    Phase 2 in non-small cell lung cancer in combination with nivolumab, sponsor Italian foundation FoRT.
  • BI 765063 (OSE-172, anti-SIRPα mAb on CD47/SIRPα pathway): developed in partnership with Boehringer Ingelheim in advanced solid tumors; positive Phase 1 dose escalation results of BI 765063 in monotherapy and in combination with ezabenlimab (PD-1 antagonist); ongoing expansion Phase 1.
  • OSE-279, anti-PD1 – advanced preclinical stage.
  • BiCKI®: bispecific fusion protein platform built on the key backbone component of anti-PD1 combined with a new immunotherapy target (for example: BiCKI®-IL7, preclinical stage) to increase anti-tumor efficacy.

Immunity & Inflammation first-in-class products

  • OSE-127/S95011 (humanized monoclonal antibody antagonist of IL-7 receptor): developed in partnership with Servier; positive Phase 1 results; ongoing Phase 2 in ulcerative colitis (sponsor OSE) and ongoing Phase 2a in Sjögren’s syndrome (sponsor Servier).
  • FR104 (anti-CD28 monoclonal antibody): licensing partnership agreement with Veloxis Pharmaceuticals, Inc. in transplantation; ongoing Phase 1/2 in renal transplant (sponsored by the Nantes University Hospital); US IND obtained by Veloxis Pharmaceuticals, Inc. for a clinical trial; Phase 2 planned in an autoimmune disease indication.
  • OSE-230 (ChemR23 agonist mAb): preclinical stage therapeutic agent with the potential to resolve chronic inflammation by driving affected tissues to tissue integrity.

CoVepiT: a prophylactic second-generation vaccine activating cytotoxic T lymphocytes against COVID-19, developed using optimized epitopes from SARS-CoV2 viral proteins, epitopes non impacted by multi-variants. Shows good tolerance and very good level of T cell immune response. Results from 6-month memory T cell responses expected Q1 2022.


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