Journal
GYNECOLOGIC ONCOLOGY
Volume 132, Issue 3, Pages 677-683Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ygyno.2014.01.021
Keywords
Ovarian cancer; Bevacizumab; Cost-effectiveness; Subgroup; Platinum-resistant; Platinum sensitive
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Objective. To evaluate, from a societal perspective, the cost-effectiveness of adding bevacizumab to first-line therapy based on outcomes from the GOG-218 and ICON-7 trials. Methods. A three-state Markov model was used. The time horizon was until the death of 99% of the initial cohort of 1000 individuals. Costs and quality-adjusted life-years (QALYs) were discounted at an annual rate of 3%. All costs were adjusted to 2013 USD. The incremental cost-effectiveness ratio (ICER) was reported as incremental cost per QALY gained. The robustness of the result was checked with one-way sensitivity analyses and for relevant clinical situations (i.e. varying the drug of choice to treat cancer recurrence). Subgroup analysis was conducted to identify subgroup of population for whom the strategy could be cost-effective. The potential impact of biosimilar bevacizumab was considered, using a 30% price reduction. Results. For the GOG-218 study protocol, widely followed in US, the addition of bevacizumab results in an ICER of $2,420,691/QALY. For the ICON-7 study protocol, the ICER is $225,515/QALY. The results of the model were sensitive to the quality of life (QoL) and the median progression free survival (PFS). Biosimilar bevacizumab didn't reduce cost sufficiently to change conclusions. First-line augmentation is cost-effective, with biosimilar bevacizumab, for stage IV patients ($126,169/QALY), ECOG PSI patients ($116,575/QALY) and for patients with suboptimal residual disease ($122,822/QALY) as per the ICON-7 protocol. Conclusion. Addition of bevacizumab, by in large, is cost-ineffective. It can become cost-effective with the ICON-7 protocol, in patients at high risk of progression using biosimilar bevacizumab. (C) 2014 Elsevier Inc. All rights reserved.
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