The reimbursements for cemiplimab in advanced NSCLC and locally advanced BCC are based on data from the phase 3 EMPOWER-Lung 1 (NCT03088540) and EMPOWER-Lung 3 (NCT03409614), and phase 2 EMPOWER-BCC 1 (NCT03132636) trials, respectively.4-6
What were the key data from EMPOWER-Lung 1, EMPOWER-Lung 3 and EMPOWER-BCC 1?
Key findings from EMPOWER-Lung 1, which evaluated first-line cemiplimab (n = 357) vs investigator’s choice of chemotherapy (n = 355) in patients with advanced NSCLC and PD-L1 TPS of 50% or greater, showed that with 35 months of follow-up, those with a PD-L1 expression of at least 50% experienced a median overall survival (OS) of 26.1 months (95% CI, 22.1-31.8) with cemiplimab vs 13.3 months (95% CI, 10.5-16.2) with chemotherapy (HR, 0.57; 95% CI, 0.46-0.71; P < .0001). The median progression-free survival (PFS) was 8.1 months (95% CI, 6.2-8.8) with cemiplimab vs 5.3 months (95% CI, 4.3-6.1) with chemotherapy (HR, 0.51; 95% CI, 0.42-0.62; P < .0001).4 Updated findings from the trial, which were analyzed with median follow-up of 59.6 months, indicated that the median OS (HR, 0.59; 95% CI, 0.48-0.72) and PFS (HR, 0.50, 95% CI, 0.41-0.61) remained unchanged.5
Long-term data from EMPOWER-Lung 3, which compared cemiplimab plus chemotherapy (n = 312) vs chemotherapy alone (n = 154) in treatment-naive patients with advanced NSCLC, showed that with median follow-up of 60.9 months, those who received cemiplimab plus chemotherapy experienced a median OS of 21.1 months (95% CI, 15.9-23.9) vs 12.9 months (95% CI, 10.6-16.1) in the chemotherapy alone arm (HR, 0.662; 95% CI, 0.531-0.825; P = .0002). The median PFS with cemiplimab was 8.2 months (95% CI, 6.5-9.0) vs 5.5 months (95% CI, 4.3-6.2) with chemotherapy alone (HR, 0.579; 95% CI, 0.467-0.718; P < .0001).6
Key findings from EMPOWER-BCC 1 showed that with median follow-up of 8.4 months, treatment with cemiplimab led to an objective response rate per independent central review (ICR) of 24.1% (95% CI, 13.5%-37.6%) in patients with metastatic BCC who progressed on or were intolerant to hedgehog inhibitors (n = 54). The median OS was not reached and the median PFS per ICR was 8.3 months (95% CI, 4.2-15.9).7
References
- Libtayo (cemiplimab for injection) now reimbursed in seven provinces for advanced non-small cell lung cancer and locally advanced basal cell carcinoma. News release. Regeneron Canada. October 30, 2025. Accessed October 31, 2025. https://www.newswire.ca/news-releases/libtayo-r-cemiplimab-for-injection-now-reimbursed-in-seven-provinces-for-advanced-non-small-cell-lung-cancer-and-locally-advanced-basal-cell-carcinoma-871937357.html
- Libtayo. Pan-Canadian Pharmaceutical Alliance (pCPA). Accessed October 31, 2025. https://www.pcpacanada.ca/negotiation/22694
- Libtayo. Pan-Canadian Pharmaceutical Alliance (pCPA). Accessed October 31, 2025. https://www.pcpacanada.ca/negotiation/22887
- Özgüroğlu M, Kilickap S, Sezer A, et al. First-line cemiplimab monotherapy and continued cemiplimab beyond progression plus chemotherapy for advanced non-small-cell lung cancer with PD-L1 50% or more (EMPOWER-Lung 1): 35-month follow-up from a mutlicentre, open-label, randomised, phase 3 trial. Lancet Oncol. 2023;24(9):989-1001. doi:10.1016/S1470-2045(23)00329-7
- Kilickap S, Baramidze A, Sezer A, et al. Cemiplimab monotherapy for first-line treatment of patients with advanced NSCLC with PD-L1 expression of 50% or higher: five-year outcomes of EMPOWER-Lung 1.
- Baramidze A, Makharadze T, Gogishvili M, et al. Cemiplimab plus chemotherapy vs chemotherapy in advanced NSCLC: 5-year results from phase 3 EMPOWER-Lung 3 part 2 trial. J Thorac Oncol. 2025;20(10):S99. doi:10.1016/j.jtho.2025.09.181
- Lewis K, Peris K, Sekulic A, et al. Primary analysis of phase 2 results for cemiplimab in patients with metastatic basal cell carcinoma who progressed on or were intolerant to hedgehog inhibitors. Cancer Res. 2022;82(suppl 12):CT165. doi:10.1158/1538-7445.AM2022-CT165