Author of

• 10801

  +

  P1.11 - Poster Session 1 - NSCLC Novel Therapies (ID 208)

  • Event: WCLC 2013
  • Type: Poster Session
  • Track: Medical Oncology
  • Presentations: 1
  • Moderators:
  • Coordinates: 10/28/2013, 09:30 - 16:30, Exhibit Hall, Ground Level

  • 10821

    +

    P1.11-020 - Economic Analysis of TORCH: Erlotinib versus Cisplatin and Gemcitabine as First-Line Therapy for Advanced Non-Small Cell Lung Cancer (NSCLC) (ID 1645)

    09:30 - 09:30  |  Author(s): C. Chung
    • Abstract

    Background
    The TORCH (“Tarceva or Chemotherapy”) randomized phase III trial demonstrated that first-line erlotinib followed by second-line cisplatin-gemcitabine (N=380) compared to cisplatin/gemcitabine followed by erlotinib (N=380) in unselected advanced NSCLC patients yielded inferior survival, without major differences in first-line global quality of life. We determined the incremental costs and utility between arms, including in the EGFR mutation positive subgroup (N=39).

    Methods
    Direct medical resource utilization data and EQ5D scores were collected prospectively during the trial. Mean survival and quality-adjusted survival per arm were calculated for the entire study population and the subgroup with documented EGFR mutations. The analysis was conducted from the Canadian public health perspective, using a lifetime horizon. Costs for medications, outpatient visits, investigations and toxicity management including hospitalization were determined, and presented in 2012 Canadian dollars (CAD). The primary outcomes of the analysis included costs and outcomes per treatment arm, and the incremental cost per quality-adjusted life-year (QALY) gained in the EGFR mutation positive subgroup.

    Results
    The costs per patient in the chemotherapy were higher than in the erlotinib arm, with an incremental mean cost of $4,190 CAD. This was related to longer duration of chemotherapy treatment, associated with higher drug and outpatient visit costs. Higher costs from hospitalization and adverse event management were seen in the erlotinib arm, likely related to disease progression. Mean overall survival in the entire study population was longer in the chemotherapy arm , although mean quality-adjusted survival was similar (0.82 QALY in chemotherapy arm and 0.87 in erlotinib arm). In the EGFR mutation positive subgroup, mean survival was slightly higher in the chemotherapy arm, but quality-adjusted survival was longer in the erlotinib arm (1.19 QALYs versus 1.08 QALYs with chemotherapy). The incremental cost-effectiveness ratio for first-line erlotinib compared to chemotherapy in the EGFR mutation positive subgroup was $32,916 CAD per QALY.

    Conclusion
    While first-line platinum doublet chemotherapy remains the standard for unselected advanced NSCLC patients, first-line erlotinib appears to be cost effective in the EGFR mutation positive subgroup. This supports routine EGFR genotyping to select first-line therapy in advanced NSCLC, and targeted EGFR TKI therapy for those with EGFR mutation positive NSCLC.