A phase I study of the OX40 agonist BGB-A445 with or without tislelizumab, an anti-PD-1 monoclonal antibody, in patients with advanced solid tumors: dose-escalation results.

ABSTRACT:

Purpose

OX40 may stimulate T-cell activation, potentially enhanced with checkpointinhibition. Results are from the dose-escalation part of an ongoing, multicenter, open-label study (NCT04215978, registered 30 December 2019) investigating OX40 agonist BGB-A445 alone or with anti-PD-1 antibody tislelizumab in patients with advanced solid tumors.

Methods

Adults ≥18 years with previously treated advanced solid tumors, measurable by RECIST v1.1, enrolled. Dose-escalation A: 8 cohorts received increasing doses of IV BGB-A445 as monotherapy (20, 60, 150, 300, 600, 1200, 2400, 3600 mg); dose-escalation B: 6 cohorts received increasing doses of IV BGB-A445 (150, 300, 600, 1200, 2400, 3600 mg) + IV tislelizumab 200 mg. Primary objectives were safety and tolerability; secondary objecti

SUBMITTER: Desai J 

PROVIDER: S-EPMC12507935 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature