Three fluoropyrimidine-based regimens in second-line therapy following nab-paclitaxel plus gemcitabine in metastatic pancreatic cancer: Efficacy and tolerance in clinical practice.

370Background: Combination of nab-paclitaxel plus gemcitabine (N+G) has recently become a valid first-line treatment (1L) in metastatic pancreatic adenocarcinoma (MPA) in patients (pts) with performance status (PS) of 0,1 or 2, but there is currently no standard second-line treatment (2L) after this new 1L option. We evaluated survival outcomes and tolerability of three usual fluoropyrimidine-based regimens: FOLFOX, FOLFIRI or FOLFIRI.3 (FOLFIRI1/3), and FOLFIRINOX after N+G failure in MPA pts. Methods: We prospectively identified 138 pts from 11 French centers who received 1L N+G for unresectable pancreatic adenocarcinoma. After disease progression or unacceptable toxicity, we excluded pts with locally advanced cancer, or who underwent secondary resection/chemoradiotherapy. Three subgroups of 2L chemotherapy were identified: FOLFOX, FOLFIRI1/3 and FOLFIRINOX regimens. Response was evaluated by RECIST criteria, progression-free survivals (PFS1, PFS2), and overall survival (OS1, OS2) were calculated using ...