Abstract
8110 Background: The INTEREST trial is the first to demonstrate non-inferiority of EGFR TKI gefitinib compared to standard second-line chemotherapy (docetaxel) in NSCLC,with better quality of life in gefitinib-treated patients. Methods: A cost-consequence analysis of direct medical costs was undertaken, given non-inferiority of the two study arms, from the perspective of the Canadian public health system. Direct medical costs (2007 CAD$)were applied to resources (e.g study treatment, toxicity management) obtained from INTEREST trial data in the public domain. Mean overall cost per patient on each treatment arm was calculated from the start of treatment until first progression. Incremental costs over best supportive care (BSC), based on an analysis of the TAX317 trial, are also calculated. Results: The mean total cost per patient treated with gefitinib was $10,840 and $8,613 for docetaxel, resulting in an incremental cost of gefitinib treatment over docetaxel of $2,227. Drug costs are the major driver, $10,515 for gefitinib (6.5 cycles) versus $6,942 for docetaxel (4.4 cycles). Limited data on toxicity management, (e.g. febrile neutropenia, anemia, rash), are available, and cost estimates are $325 for gefitinib and $1,671 for docetaxel-treated patients. Additional hospitalization data were not available and therefore not included in these estimates. Based on published cost data for BSC, the incremental cost of gefitinib over BSC is estimated at $12,916 with available data, with an incremental cost effectiveness ratio of $37,988/life-year gained. Conclusion: Gefitinib second-line has similar efficacy compared to docetaxel with better quality of life. While drug costs for gefitinib are greater, costs for toxicity management are substantially less, and underestimated in this analysis. Gefitinib second-line is an attractive and affordable alternative for patients with advanced NSCLC. Author Disclosure Employment or Leadership Consultant or Advisory Role Stock Ownership Honoraria Research Expert Testimony Other Remuneration AstraZeneca Oncology, sanofi-aventis
Published Version
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