The role of modified FOLFIRINOX regimen in unresectable advanced pancreatic cancer: A retrospective clinical study.

Abstract

e15709 Background:Pancreatic cancer was the fourth leading cause of death from cancer in the United States in 2015, with a 5-year survival rate only 6%.More than 85% of patients has an unresectable disease at diagnosis for most patients remain asymptomatic. This population including locally advanced pancreatic cancer (LAPC) and metastatic pancreatic cancer (MPC). Gemcitabine has been the standard treatment option for these patients for more than a decade, with a median overall survival nearly 6 months. In 2011, the phase 3 randomised controlled trial(PRODIGE 4/ACCORD 11) reported that FOLFIRINOX regimen had a significantly improved OS,PFS and a predominant ORR in patients with metastatic disease.FOLFIRINOX, as an encouraging regimen, its actual higher adverse events rate in clinical practice should not be underestimated, especially the grade 3/4 neutropenia and sensory neuropathy. The aim of our study is to explore whether a modified FOLFIRINOX regimen with the decrements of oxaliplatin and irinotecan had maintained efficacy and decreased grade 3/4 adverse events rate for the advanced pancreatic cancer. Methods:Retrospectively collected data of all patients carrying a diagnosis of advanced pancreatic cancer at the department of medical oncology, Hangzhou First People’s Hospital and Hangzhou cancer hospital between January 2014 and September 2016.The endpoint were overall survival, objective response rate and grade 3/ 4 adverse events. Results:Among 21 patients who received median 5(1-12) cycles modified FOLFIRINOX regimen,15 of total patients received this regimen for more than 4 cycles (71.4%). The median overall survival of MPC patients in this study is 12.6 months (95% CI, 6.2 months to 19 months). The objective response rate was 42.9%, with partial remission in 9 cases, stable disease in 8 cases and progression disease in 4 cases. Totally 8 patients had grade 3/4 adverse events, the most frequent were neutropenia (14.3%), neuropathy (14.3%) and diarrhea (9.5%). No chemotherapy-related death occurred. Conclusions:mFOLFIRINOX regimen in this study has maintained efficacy for its high objective response rate and an improved safety profile in patients with advanced pancreatic cancer.