Cost-effectiveness of FOLFIRINOX for first-line treatment of metastatic pancreatic cancer.

Abstract

199 Background: The ACCORD 11/0402 trial demonstrates that FOLFIRINOX (5-fluorouracil, leucovorin, irinotecan, and oxaliplatin) is significantly more efficacious than the current standard of gemcitabine (G) monotherapy in the first line treatment of metastatic pancreatic cancer (mPC). This study assesses for public payers the cost-effectiveness of first-line FOLFIRINOX compared to first-line G in Canadian mPC patients. Methods: A Markov model was used to estimate how patients progress through the following states: ‘stable’, ‘progressed’, ‘dead’. OS and PFS data were derived from the trial data. Published utility data and Canadian cost data were applied based on time in each state and treatment related adverse event (AE) rates. Costs included first and second-line therapy, monitoring, AE and end of life costs. Costs and outcomes are discounted at 5%. Two separate analyses were made. Analysis 1: Based on trial data (First-line FOLFIRINOX → second-line G versus First-line G → second-line platin-based chemo, G-CSF usage allowed). Analysis 2: Current Ontario Treatment Patterns (first-line FOLFIRINOX → second-line G vs first-line G → best supportive care, no G-CSF usage). Results: All analyses found that using first-line FOLFIRINOX produced more life years and QALY than treatment strategies that used first-line G. The probabilistic sensitivity analysis results for both analyses support the use of FOLFIRINOX for first-line treatment of mPC. FOLFIRINOX has a greater than 95% and 90% probability of being cost effective at an $80,000 threshold for Analysis 1 and Analysis 2 respectively. Conclusions: First-line FOLFIRINOX significantly prolongs median OS by more than 4 months over G (11.3 vs 6.8 months, HR=0.57). Given the favorable costs per QALYs, the improvement in clinical efficacy and the limited available treatment options, FOLFIRINOX represents an attractive cost-effective treatment for mPC. [Table: see text]