Verastem(US:VSTM)2025-06-02 20:23RAMP 205 Data Update - Dose Level 1 in RAMP 205 demonstrated an 83% unconfirmed ORR (10/12 patients) and a 66.7% confirmed ORR (8/12 patients) in frontline metastatic PDAC[48] - Dose Level 1 also showed a 92% disease control rate (11/12 patients) for at least 4 cycles[48] - In RAMP 205, 92% (48/52) of patients showed tumor reduction across all dose cohorts[57] - Approximately 180,000 total incident PDAC patients globally represent a high unmet need, with a 5-year relative survival rate of 13.3%[20, 22] VS-7375 KRAS G12D Inhibitor - VS-7375 is a KRAS G12D (ON/OFF) inhibitor with IC50 values of 2 nM for GppNp-bound (ON/active) and 6 nM for GDP-bound (OFF/inactive) KRAS G12D[68] - Preclinical data indicates that VS-7375 is more efficacious than KRAS ON inhibitors in reducing tumor growth in KRAS G12D models[73] - In a KRAS G12D colorectal cancer model, the addition of Cetuximab with VS-7375 induced complete responses in all mice[78] - KRAS G12D mutations account for 26% of all KRAS mutations and are prevalent in pancreatic and colorectal cancers[84] Clinical Development Plans - The company plans to launch a Phase 3 study in 1L mPDAC in 2026[103, 113] - The company is initiating enrollment for the Phase 1/2a trial of VS-7375 in advanced solid tumors in the US, starting with an efficacious dose level of 400 mg QD[108, 113]