Mutations were seen in BRCA1 (N = 7), BRCA2 (N = 5), BRCA1/2 (N = 3), PALB2 (N = 3), MSH2 (N = 1) and FANCF (N = 1) of all the DDR genes sequenced...Cox regression (HR 0.37 [0.15-0.94], p = 0.04) showed presence of DDRGM was associated with improved OS....we found that the presence of germline and somatic DDRGM as well as germline BRCA1/2 mutations are associated with improved OS in PDAC patients treated with FOLFIRINOX.