Ανάλυση κόστους-αποτελεσματικότητας του Cemiplimab σε σύγκριση με σχήμα χημειοθεραπείας σε προχωρημένο μη μικροκυτταρικό καρκίνο του πνεύμονα
Cost-effectiveness analysis of Cemiplimab versus chemotherapy in advanced non-small cell lung cancer
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Keywords
Μη μικροκυτταρικός καρκίνος του πνεύμονα ; Ανάλυση κόστους αποτελεσματικότητας ; Cemiplimab ; Partitioned Survival Model (PSM) ; ICERAbstract
Lung cancer is one of the most prevalent forms of cancer and remains the leading
cause of cancer death worldwide. Non-small cell lung cancer (NSCLC) is the most
common form of the disease, accounting for 85% of cases, and is generally considered to
have a better prognosis than its counterpart, small cell lung cancer (SCLC).
According to the findings of the EMPOWER-Lung 1 study of interest, Cemiplimab
showed higher progression-free survival rates and better overall survival outcomes.
Specifically, the estimated progression-free survival rate at 12 months was 41% for
cemiplimab and 7% for chemotherapy, while the estimated probability of overall survival
at 24 months was 50% for cemiplimab and 27% for chemotherapy. In addition, the median
duration of response was significantly longer with cemiplimab at 16.7 months (95% CI:
12.5–22.8) compared with 6.0 months (95% CI: 4.3–6.5) with chemotherapy.
Cemiplimab is a fully human monoclonal antibody that binds to the PD-1 receptor,
preventing tumor cells from turning off immune cell activity. Thus, the ability of the
immune system to destroy cancer cells is enhanced. On June 28, 2019, the European
Medicines Agency granted cemiplimab a conditional marketing authorization, which was
converted into a regular marketing authorization on July 1, 2022.
Objective: This work aims to evaluate the cost and effectiveness of the drug cemiplimab
versus a platinum-containing chemotherapy regimen, as first-line treatment in adult
patients with advanced non-small cell lung cancer (NSCLC) (stage IIIB/IIIC or IV), whose
tumors express the PD-L1 factor in at least 50%. This analysis was carried out by the
National Health System.
Method: To conduct the cost-effectiveness analysis, a partitioned survival model (PSM)
was developed with three health states: ¨no disease progression (PFS)¨, ¨progressed disease
(PD)¨ and ¨death¨. The population was designed based on the data of the EMPOWER-Lung
1 approval study and the rest of the data needed in the analysis were drawn from the foreign
and Greek literature. The model followed the patients in one-month time cycles for a period
of 240 months, which spans the patients' life expectancy. In addition, the annual discount
rate used is 3.5%. After the basic analysis was completed, a sensitivity analysis was
performed to assess the reliability of the result against the uncertainties in the model data.
Results: In the main analysis, the choice of cemiplimab for the treatment of advanced
NSCLC resulted in a total cost increase of €59,888.21 compared to chemotherapy. In
addition, treatment with cemiplimab showed an increase in life expectancy of 1.35 years
and an increase in quality-weighted life years of 0.93 compared to the chemotherapy
option. From the calculation of the ratio of the cost difference and QALYs, it follows that
the ICER index (incremental cost-effectiveness ratio) is €64,657.57/QALY.