Abstract

e17502 Background: Capecitabine is an oral fluoropyrimidine used to treat patients with metastatic colorectal cancer (mCRC). Recent trials in 1st- and 2nd-line treatment have shown that capecitabine in combination with oxaliplatin (XELOX) is non-inferior to FOLFOX4 in terms of progression-free survival, overall survival and response rates. XELOX offers patients the advantage of treatment every 3 weeks rather than every 2 weeks without the need for lengthy infusions. This analysis evaluated the cost- effectiveness of replacing FOLFOX4 with XELOX for 1st- and 2nd-line treatment of mCRC from both Canadian healthcare system payor and societal perspectives. Methods: Based on evidence of non-inferiority of XELOX vs. FOLFOX4, cost-minimization analyses (CMA) were conducted using phase III clinical trial data. The CMA compared total cost associated with chemotherapy medications, administration of chemotherapy, and treatment related toxicities. For the societal perspective, patients’ costs and time were also included. The costs (or savings) were compared for 1st-line XELOX vs. FOLFOX4 and 2nd-line XELOX vs. FOLFOX4. Due to variation in Canadian clinical practice, sensitivity analyses using the FOLFOX6 regimen as a comparator were performed. Results: Cost savings per patient for XELOX vs. FOLFOX4 from a healthcare system payor perspective and a societal perspective are shown in the Table . XELOX was also associated with cost savings when compared with the simplified administration regimen of FOLFOX6. Reduced costs for chemotherapy administration and costs for patients’ time and travel primarily related to fewer clinic visits offset the increased drug acquisition cost of the XELOX regimen. Conclusions: Replacing FOLFOX with XELOX is associated with cost savings from the healthcare system payor and societal perspectives while preserving clinical efficacy. [Table: see text] [Table: see text]

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