Subgroup Analysis By Baseline (Bl) Weight-Associated Parameters: A Phase Iii Study Of Liposomal Irinotecan (Nal-Iri)+/--5fluorouracil/Leucovorin (5-Fu/Lv) In Patients (Pts) With Metastatic Pancreatic Ductal Adenocarcinoma (Mpdac) Previously Treated With Gemcitabine-Based (Gem) Therapy.

410Background: We report prognostic evaluation of BL weight-associated parameters (body-mass index [BMI], body surface area [BSA] and weight) in pts with mPDAC after progression following gem-based therapy (NAPOLI-1 trial; NCT01494506). Pts received nal-IRI+5-FU/LV, nal-IRI monotherapy or 5-FU/LV in NAPOLI-1, an international, randomised, phase 3 trial; nal-IRI+5-FU/LV treatment resulted in a 45% increased median OS vs. 5-FU/LV (unstratified HR = 0.67; p = 0.012). Methods: This exploratory subgroup analysis compares outcomes by BL BMI, BSA and weight, using primary survival analysis data from the ITT population for all treatment arms combined (n = 417) and the nal-IRI+5-FU/LV arm on its own (n = 117). Results: OS and PFS were not significantly different between BL BMI, BSA and weight median subgroups in the entire NAPOLI-1 ITT population (HR range 1.06–1.15; log-rank p-value range 0.21–0.60; Table) and in the nal-IRI+5-FU/LV arm (HR range 0.94–1.19; log-rank p-value range 0.43–1.00). Conclusions: This pos...