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Phase I study of the VEGF/Ang-2 inhibitor BI 836880 alone or combined with the anti-programmed cell death protein-1 antibody ezabenlimab in Japanese patients with advanced solid tumors

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Abstract

Purpose

This two-part, open-label, non-randomized dose-escalation study aimed to define the maximum tolerated dose (MTD) of BI 836880 (humanized bispecific nanobody® targeting vascular endothelial growth factor and angiopoietin-2) as monotherapy and in combination with ezabenlimab (programmed death protein-1 inhibitor) in Japanese patients with advanced and/or metastatic solid tumors.

Methods

In part 1, patients received an intravenous infusion of BI 836880 at 360 or 720 mg every 3 weeks (Q3W). In part 2, patients received BI 836880 at doses of 120, 360, or 720 mg in combination with ezabenlimab 240 mg Q3W. The primary endpoints were the MTD and the recommended phase II dose (RP2D) of BI 836880 as monotherapy and in combination with ezabenlimab, based on dose-limiting toxicities (DLTs) during the first cycle.

Results

Twenty-one patients were treated; nine in part 1 and 12 in part 2. No DLTs were reported in either part and the MTD was not reached. The RP2Ds were BI 836880 720 mg Q3W as monotherapy and BI 836880 720 mg plus ezabenlimab 240 mg Q3W. The most common adverse events were hypertension and proteinuria (33.3%) with BI 836880 monotherapy and diarrhea (41.7%) with the combination. Four patients (44.4%) in part 1 had stable disease as best overall tumor response. In part 2, two patients (16.7%) had confirmed partial responses and five had stable disease (41.7%).

Conclusion

MTD was not reached. BI 836880 alone and in combination with ezabenlimab had a manageable safety profile with preliminary clinical activity in Japanese patients with advanced solid tumors.

Trial registration and date

NCT03972150, registered on June 3, 2019.

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Data availability

To ensure independent interpretation of clinical study results and enable authors to fulfill their role and obligations under the ICMJE criteria, Boehringer Ingelheim grants all external authors access to clinical study data pertinent to the development of the publication. In adherence with the Boehringer Ingelheim Policy on Transparency and Publication of Clinical Study Data, scientific and medical researchers can request access to clinical study data when it becomes available on https://vivli.org/, and earliest after publication of the primary manuscript in a peer-reviewed journal, regulatory activities are complete, and other criteria are met. Please visit https://www.mystudywindow.com/msw/datasharing for further information.

Change history

  • 10 July 2023

    The original version is updated due to minor corrections and realignment of text.

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Funding

This work was supported by Boehringer Ingelheim International GmbH. Medical writing support for the development of this manuscript, under the direction of the authors, was provided by Hannah Simmons, MSc, of Ashfield MedComms, an Inizio Company, and funded by Boehringer Ingelheim. The authors received no direct payment for development of the manuscript; this does not exclude direct payment for carrying out the study.

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Authors and Affiliations

Authors

Contributions

NY: investigation; TK: investigation, resources; TS, investigation, resources; AT: investigation; TK: investigation, resources; DE: conceptualization, methodology, formal analysis, resources; AS: conceptualization, methodology, formal analysis, investigation, data curation; BL: methodology, formal analysis; JH: methodology, formal analysis; KY: resources. All authors were involved in the reviewing and editing of the manuscript, approved the final version to be published, and agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.

Corresponding author

Correspondence to Kentaro Yamazaki.

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Conflict of interest

Noboru Yamamoto reports receiving honoraria from AstraZeneca, Bristol Myers Squibb, Chugai Pharmaceutical, Eli Lilly, Ono Pharmaceutical, and Sysmex; consulting/advisory fees from Boehringer Ingelheim, Cimic, Eisai, Otsuka, and Takeda Pharmaceuticals; and research funding (institution) from Astellas Pharma, Bayer, Bristol Myers Squibb, Boehringer Ingelheim, Chiome Bioscience, Chugai Pharmaceutical, Daiichi Sankyo, Eisai, Eli Lilly & Co, Genmab, GlaxoSmithKline, Janssen Pharma, Kyowa Hakko Kirin, Merck Sharp & Dohme, Merck, Novartis, Ono Pharmaceutical, Otsuka, Pfizer, Quintiles, Sumitomo Dainippon, Taiho Pharmaceutical, Takeda Pharmaceuticals, Shionogi, KAKEN, and TORAY. Takafumi Koyama reported receiving personal fees from Chugai and Sysmex and grants from PACT Pharma, Chugai, Novartis, Eli Lilly and Company, Pfizer, Loxo Oncology, and Takeda Oncology. Toshio Shimizu declares grants from Novartis, Eli Lilly and Company, AbbVie, Daiichi-Sankyo, Eisai, Bristol-Myers Squibb, AstraZeneca, Pfizer, Loxo Oncology, Takeda Oncology, Incyte, Chordia Therapeutics, 3D-Medicine, Symbio Pharmaceuticals, PharmaMar, and Astellas. Akiko Todaka received honoraria from Taiho Pharmaceutical, Ono Pharmaceutical, Yakult Honsha and Nihon Servier. Takeshi Kawakami received honoraria from Taiho Pharmaceutical, Ono Pharmaceutical, and Bristol-Myers Squibb. Damijan Erzen, Akiko Sarashina, Bin Li and Jianrui Hou report being employed by Boehringer Ingelheim. Kentaro Yamazaki reported receiving honoraria from Chugai Pharma, Daiichi Sankyo, Yakult Honsha, Takeda, Bayer, Merck Serono, Taiho Pharmaceutical, Lilly, Sanofi, Ono Pharmaceutical, MSD, Bristol Myers Squibb; and institutional research funding from Taiho Pharmaceutical.

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Yamamoto, N., Koyama, T., Shimizu, T. et al. Phase I study of the VEGF/Ang-2 inhibitor BI 836880 alone or combined with the anti-programmed cell death protein-1 antibody ezabenlimab in Japanese patients with advanced solid tumors. Cancer Chemother Pharmacol 91, 469–480 (2023). https://doi.org/10.1007/s00280-023-04527-6

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