The Cost-Effectiveness of Lorlatinib Versus Chemotherapy as a Second- or Third-Line Treatment in Anaplastic Lymphoma Kinase (ALK)-Positive Non-small-cell Lung Cancer in Sweden

Fredrik O. L. Nilsson (), Sandra T. Asanin, Elizabeth T. Masters, Laura Iadeluca, Chrissy Almond, Miranda Cooper and Sarah Smith
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Fredrik O. L. Nilsson: Pfizer Innovations AB
Sandra T. Asanin: Pfizer Innovations AB
Elizabeth T. Masters: Pfizer Inc.
Laura Iadeluca: Pfizer Inc.
Chrissy Almond: BresMed
Miranda Cooper: BresMed
Sarah Smith: BresMed

PharmacoEconomics, 2021, vol. 39, issue 8, No 7, 952 pages

Abstract: Abstract Background Lorlatinib is a third-generation anaplastic lymphoma kinase (ALK)/c-ros oncogene 1 (ROS1) tyrosine kinase inhibitor (TKI) with efficacy in patients with ALK-rearranged non-small-cell lung cancer (NSCLC) previously treated with a second-generation ALK inhibitor or with first- and second-generation ALK inhibitors. We examined the cost-effectiveness of second- or third-line+ (2L+ or 3L+) lorlatinib in Sweden, versus chemotherapy. Methods A partitioned survival model with three health states (progression free, progressed, or death) was used. Lorlatinib relative efficacy versus chemotherapy was derived using unanchored matching adjusted indirect treatment comparisons from a phase 2 clinical trial. Utility data were derived from the same trial and published studies. Costs (year 2019) were obtained from Swedish national data. Costs and benefits were discounted at 3% per annum using a societal perspective (base case). Model robustness was evaluated with deterministic and probabilistic sensitivity analyses. Results For 2L+, the average discounted total quality-adjusted life year (QALY) gain was 1.29 years. Total incremental costs were Swedish krona (SEK) 731,791, resulting in an incremental cost-effectiveness ratio (ICER) of SEK 566,278 per QALY gained. Non-discounted survival gain amounted to 1.94 years. For 3L+, the average discounted total QALY gain was 1.25 years. Total incremental costs were SEK 754,801, resulting in an ICER of SEK 603,934 per QALY gained. Non-discounted survival gain was 1.88 years. Sensitivity analyses were consistent. Conclusions ICERs ranged from SEK 421,000 to SEK 384,066 less than the boundary for a cost-effective treatment for a high-severity disease in Sweden (SEK 988,000), suggesting 2L+ or 3L+ lorlatinib is a cost-effective treatment for ALK-positive NSCLC versus chemotherapy.

Date: 2021
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DOI: 10.1007/s40273-021-01015-8

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