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Y. Lou



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    MA14 - Immunotherapy in Advanced NSCLC: Biomarkers and Costs (ID 394)

    • Event: WCLC 2016
    • Type: Mini Oral Session
    • Track: Advanced NSCLC
    • Presentations: 1
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      MA14.10 - Relative Impact of Disease Management Costs in the Economics of Pembrolizumab in Previously Treated PD-L1 Positive Advanced NSCLC (ID 5439)

      17:06 - 17:12  |  Author(s): Y. Lou

      • Abstract
      • Presentation
      • Slides

      Background:
      This study aimed to understand the impact on disease management costs beyond drug acquisition costs in the context of an economic evaluation of pembrolizumab compared with docetaxel in patients in patients with previously treated PD-L1 positive (TPS>=50%) advanced NSCLC. The analysis was conducted from a US third-party payer perspective.

      Methods:
      A partitioned-survival model was developed using data from patients from the KEYNOTE-010 (KN010) clinical trial. The model used KM estimates of PFS and OS from the trial for patients treated with pembrolizumab 2mg/kg and docetaxel 75kg/m[2] with extrapolation based on fitted parametric functions and long-term registry data. Costs of clinical management of advanced NSCLC along with drug acquisition/administration and adverse event management costs were included in the model. The base-case analysis used a time horizon of 20 years. Costs and health outcomes were discounted at a rate of 3% per year.

      Results:
      Base case results project for PD-L1 positive (TPS>=50%) patients treated with pembrolizumab a mean survival of 2.25 years. For docetaxel, a mean survival time of 1.07 years was estimated. Weekly disease management costs observed in KN010 for the progression-free state were $866 and $1,298 for pembrolizumab and docetaxel, respectively. Weekly disease management costs for the progressive disease state were $1,938 based on a US healthcare claim database. Results projected total disease management costs to be $166K per patient treated with pembrolizumab compared with $93K for docetaxel because of extended progression-free and post-progression survival with pembrolizumab. Nearly half (45%) of total expected cost differences between pembrolizumab and docetaxel are due to the incremental disease management costs. Further analyses that exclude drug treatment costs show that the additional disease management costs associated with extended progression-free and overall survival exceed $50,000 per LY gained ($61,864).

      Conclusion:
      Pembrolizumab improves outcomes compared to docetaxel in PD-L1 positive (TPS>=50%) pre-treated advanced NSCLC patients in the US. The improved overall survival with pembrolizumab is accompanied by the economic reality of additional non-pembrolizumab costs that represent their own substantial economic burden.

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