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Cost-Effectiveness Analysis of Olaparib in Combination with Bevacizumab Compared with Bevacizumab Monotherapy for the First-Line Maintenance Treatment of Homologous Recombination Deficiency-Positive Advanced Ovarian Cancer

Author

Listed:
  • David Elsea

    (Formerly of Lumanity, Inc.)

  • Lin Fan

    (Formerly of Merck & Co., Inc.)

  • Adela Mihai

    (AstraZeneca)

  • Fadoua El Moustaid

    (Formerly of Lumanity, Inc.)

  • Daniel Simmons

    (AstraZeneca)

  • Matthew Monberg

    (Merck & Co., Inc.)

  • Dominic Muston

    (Merck & Co., Inc.)

Abstract

Background In the PAOLA-1 trial, olaparib plus bevacizumab demonstrated significant clinical benefit following partial or complete response to platinum-based chemotherapy in homologous recombination deficiency (HRD)-positive ovarian cancer. Our study evaluated the cost effectiveness of olaparib plus bevacizumab compared with bevacizumab alone as a maintenance treatment for women in this population. Methods Our model was a cohort-level partitioned survival model with a lifetime horizon from a US healthcare system perspective. Its four health states were progression-free, post first progression, post second progression, and death, modeled using time to first progression (PFS1), second progression (PFS2), and overall survival (OS) from PAOLA-1. We modeled PFS1 through mixture survival modeling, and PFS2 and OS by fitting standard parametric models. Time-on-treatment was sourced directly from PAOLA-1, with treatment capped at 24 months for olaparib and 15 months for bevacizumab. Costs included drug acquisition and administration, adverse events, disease management, biomarker testing, and subsequent treatments. Deterministic and probabilistic sensitivity analyses tested the results. Results Compared with bevacizumab alone, olaparib plus bevacizumab increased quality-adjusted life-years (QALYs; +2.89) and life-years (LYs; +3.43) at an incremental cost of $164,209, leading to an incremental cost-effectiveness ratio of $56,863 per QALY. Olaparib plus bevacizumab had a 97.0% probability of being cost effective compared with bevacizumab alone at a willingness-to-pay threshold of $100,000 per QALY. Conclusion The addition of olaparib to bevacizumab led to clinically significant increases in progression-free survival, resulting in substantial predicted LYs and QALYs gained, while being cost effective in the maintenance treatment of advanced ovarian cancer with HRD in the US.

Suggested Citation

  • David Elsea & Lin Fan & Adela Mihai & Fadoua El Moustaid & Daniel Simmons & Matthew Monberg & Dominic Muston, 2022. "Cost-Effectiveness Analysis of Olaparib in Combination with Bevacizumab Compared with Bevacizumab Monotherapy for the First-Line Maintenance Treatment of Homologous Recombination Deficiency-Positive A," PharmacoEconomics - Open, Springer, vol. 6(6), pages 811-822, November.
    • Handle: RePEc:spr:pharmo:v:6:y:2022:i:6:d:10.1007_s41669-022-00338-2
    DOI: 10.1007/s41669-022-00338-2
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    1. Shafrin, Jason & Skornicki, Michelle & Brauer, Michelle & Villeneuve, Julie & Lees, Michael & Hertel, Nadine & Penrod, John R. & Jansen, Jeroen, 2018. "An exploratory case study of the impact of expanding cost-effectiveness analysis for second-line nivolumab for patients with squamous non-small cell lung cancer in Canada: Does it make a difference?," Health Policy, Elsevier, vol. 122(6), pages 607-613.
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