Modified Fluorouracil, Leucovorin, Irinotecan, and Oxaliplatin or S-1, Irinotecan, and Oxaliplatin Versus Nab-Paclitaxel + Gemcitabine in Metastatic or Recurrent Pancreatic Cancer (GENERATE, JCOG1611): A Randomized, Open-Label, Phase II/III Trial
The GENERATE/JCOG1611 trial in Japanese patients with metastatic or recurrent PDAC found that neither mFOLFIRINOX nor S-IROX improved overall survival (OS) versus nab-paclitaxel/gemcitabine (median OS 14.0 vs 13.6 vs 17.0 months; hazard ratio (HR) ≈1.29), and the study was stopped early for futility. Progression-free survival (PFS) was similar across arms (≈5.8–6.7 months) but nab-paclitaxel/gemcitabine had fewer grade 3–4 GI toxicities and less febrile neutropenia, supporting its continued use in this population. The OS difference likely reflects more effective second-line sequencing after nab-paclitaxel/gemcitabine, including liposomal irinotecan, rather than intrinsic superiority. In Western studies, NALIRIFOX outperformed Nab-P/Gem, but in the Japanese trial, Nab-P/Gem remained at least as effective as triplet regimens, likely due to differences in patient population, sequencing, and access to second-line therapies.