Journal
CLINICAL THERAPEUTICS
Volume 40, Issue 7, Pages 1122-1139Publisher
ELSEVIER
DOI: 10.1016/j.clinthera.2018.05.012
Keywords
daratumumab; relapsed or refractory; multiple myeloma; cost-effectiveness
Categories
Funding
- National Natural Science Foundation of China [71704064]
- Natural Science Foundation of Guangdong Province, China [2017A030310174]
- Fundamental Research Funds for the Central Universities [21616324]
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Purpose: The prominent efficacy of the addition of daratumumab to lenalidomide and dexamethasone (DRd) or the addition to bortezomib and dexamethasone (DVd) was proven previously for patients with relapsed or refractory multiple myeloma (RRMM). However, the cost-effectiveness of adding daratumumab to traditional doublet regimens versus doublet regimens alone (DRd vs Rd; DVd vs Vd) was unknown. Methods: We developed a semi-Markov model by using a US payer perspective and 10-year time horizon to estimate the cost and quality-adjusted life years (QALYs) for treatments. Clinical data were obtained from the POLLUX (Phase 3 Study Comparing DRd Versus Rd in Subjects with Relapsed or Refractory Multiple Myeloma [RRMM]) and CASTOR (Phase 3 Study Comparing DVd Versus Vd in Subjects with RRMM) trials. Deterministic and probabilistic sensitivity analyses were conducted to evaluate model uncertainty. Findings: The incremental cost-effectiveness ratio (ICER) for DVd compared with Vd was $284,180 per QALY; the ICER for DRd compared with Rd was $1,369,062 per QALY. Only when the price of daratumumab was reduced to 37% (US $702/vial) of the current price could the addition of daratumumab to Vd be cost-effective under the US willingness-to-pay (WTP) of $50,000/QALY. However, under no discount level of the daratumumab price is the addition of daratumumab to Rd acceptable. When the WTP increased to $300,000/QALY, the addition of DVd had a 56.7% probability of being cost-effective compared with the Vd regimen. (C) 2018 Published by Elsevier Inc.
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