Verastem Inc. has announced encouraging preliminary data from its ongoing Phase 1/2a clinical trial evaluating VS-7375, an oral KRAS G12D (ON/OFF) inhibitor, in patients with previously-treated advanced KRAS G12D mutant solid tumors. The first two monotherapy dose levels (400 mg QD and 600 mg QD) have been cleared with no dose-limiting toxicities reported, and promising anti-tumor activity has been observed across various solid tumors, including advanced pancreatic ductal adenocarcinoma. Gastrointestinal tolerability has been favorable, with no nausea, vomiting, or diarrhea greater than Grade 1 observed. Patient enrollment has also begun for the first dose escalation combination cohort of VS-7375 with cetuximab in patients with advanced KRAS G12D mutant solid tumors, including colorectal cancer. Verastem plans to report an interim safety and efficacy update on the Phase 1/2a trial in the first half of 2026.