ArticleResearch square2024
Intratumoral Fc-optimized agonistic CD40 antibody induces tumor rejection and systemic antitumor immunity in patients with metastatic cancer.
Article in Research square, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04059588 (A Phase I, Dose-escalation Study Investigating the Safety and Tolerability of Intratumoral Injection of an Fc-engineered Anti-CD40 Monoclonal Antibody), which is not on this map. Not yet cited in PubMed.
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The trial behind it
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A Phase I, Dose-escalation Study Investigating the Safety and Tolerability of Intratumoral Injection of an Fc-engineered Anti-CD40 Monoclonal Antibody (2141-V11) in Patients With Cancer
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Authors and funding
12 authors.
Funding
Abstract
While CD40 agonism is an attractive approach for activating antigen-presenting cells and initiating antitumor responses, previous attempts have encountered limited clinical efficacy coupled with toxicity. We previously demonstrated that interactions between the antibody Fc domain and the inhibitory receptor FcγRIIB are critical for enhanced antitumor activity. Here, we present the results of a phase 1 study on intratumoral administration of an anti-CD40 agonistic antibody (2141-V11) Fc-engineered to enhance FcγRIIB binding. Primary endpoints included safety, maximum tolerated dose (MTD), and recommended phase 2 dose. Secondary objectives included preliminary clinical activity and correlative studies from biospecimens. 2141-V11 was well-tolerated without dose-limiting toxicities and MTD was not reached. In ten evaluable patients with metastatic cancer, the overall response rate was 20%, with complete responses in two patients (melanoma and breast carcinoma) and stable disease in six patients. 2141-V11 induced tumor regression in injected and non-injected lesions, with increased leukocyte infiltration and tertiary lymphoid structures (TLS) formation in post-treatment biopsies. In a humanized mouse model for CD40 and FcγRs, 2141-V11 induced TLS formation in mice bearing orthotopic breast carcinoma, correlating with local and abscopal antitumor effects, systemic immune activation, and immune memory. These findings support the safety and efficacy of 2141-V11, warranting phase 2 studies and suggesting a unique mechanism of action for this Fc-enhanced immunotherapy (NCT04059588).
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