Secreted Clever-1 modulates T cell responses and impacts cancer immunotherapy efficacy.

ABSTRACT: Rationale: Clever-1 is a multifunctional scavenger receptor that promotes immunosuppressive activity in macrophages, contributing to tumor immune evasion. Its high expression correlates with resistance to immune checkpoint inhibitors, and co-targeting Clever-1 with anti-PD-1 enhances therapeutic efficacy in refractory tumor models. The humanized anti-Clever-1 IgG4 antibody, bexmarilimab, is under clinical investigation for treating solid tumors (NCT03733990) and hematological malignancies (NCT05428969). Methods: To assess the impact of Clever-1 in cancer, we analyzed plasma samples from breast cancer patients (n=139) and bexmarilimab-treated clinical trial participants (n=193) using TRFIA-based ELISA to quantify secreted Clever-1 (sClever-1). A recombinant sClever-1 protein w

SUBMITTER: Prince S 

PROVIDER: S-EPMC12315809 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature