Core Insights - Tango Therapeutics announced positive data from its Phase 1/2 study of vopimetostat (TNG462) in patients with MTAP-deleted cancers, particularly pancreatic cancer, showing a median progression-free survival (mPFS) of 7.2 months and an objective response rate (ORR) of 25% in the second-line setting [1][2] Efficacy Results Across Study Indications - The overall ORR across 16 cancer types in the trial is 27% with a disease control rate (DCR) of 78% and a median PFS of 6.4 months [5] - In the histology-agnostic cohort, the ORR is 49% with a mPFS of 9.1 months, excluding sarcoma [11] Efficacy Results in Pancreatic Cancer Patients - For pancreatic cancer specifically, the ORR in second-line patients is 25%, while the ORR for all pancreatic cancer patients is 15% [5][11] - The DCR for all pancreatic cancer patients is reported at 71% [11] Development Strategy in Pancreatic Cancer - The company plans to initiate a global, randomized, pivotal study in 2026 comparing vopimetostat to standard chemotherapy regimens in patients with MTAP-deleted pancreatic cancer who have received one prior line of therapy [11] - The ongoing combination study with RAS(ON) inhibitors is expected to provide initial data in 2026 [11] Safety and Tolerability - Vopimetostat is generally well tolerated at the agreed dose of 250 mg QD, with common treatment-related adverse events including nausea (26%), anemia (20%), and fatigue (19%) [8] - No treatment-related Grade 4 or 5 events occurred, and only 8% of patients required dose reduction [8] About Vopimetostat - Vopimetostat is a potentially best-in-class oral PRMT5 inhibitor targeting cancers with MTAP deletion, which occurs in 10-15% of all human cancers, including 35% of pancreatic cancer [12] About Tango Therapeutics - Tango Therapeutics is focused on discovering novel drug targets and developing precision medicine for cancer treatment, leveraging the genetic principle of synthetic lethality [13]