In this report, we present two patients with advanced PDAC with KRAS G12C mutations who achieved remarkable disease control and prolonged survival following treatment with the KRAS G12C inhibitor D1553 (garsorasib)...Case 2, a 75-year-old woman initially treated with Folinic acid, fluorouracil, irinotecan and oxaliplatin (FOLFIRINOX) and stereotactic body radiotherapy (SBRT), demonstrated sustained disease stability for over three years on KRAS G12C inhibitor therapy...These cases underscore the potential of KRAS-directed therapies in PDAC and illustrate the importance of molecular profiling in identifying eligible patients. The findings support further investigation into the durability of KRAS G12C inhibition, resistance mechanisms, and combination treatment strategies to optimize patient outcomes.