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Clinical and financial impact of immune checkpoint inhibitors following platinum chemotherapy in patients with advanced or metastatic non-small cell lung cancer: a nationwide population-based study

 Hyun Woo Ji  ;  Sungyoun Chun  ;  Jung Mo Lee  ;  Seon Cheol Park  ;  Chang Hoon Han  ;  Chi Young Kim  ;  Sang Chul Lee 
 TRANSLATIONAL LUNG CANCER RESEARCH, Vol.13(1) : 46-59, 2024-01 
Journal Title
Issue Date
Non-small cell lung cancer (NSCLC) ; immune checkpoint inhibitor (ICI) ; mortality ; nivolumab ; pembrolizumab
Background: Although various studies have demonstrated that the clinical efficacy of immune checkpoint inhibitors (ICIs) improves the prognosis of patients with non -small cell lung cancer (NSCLC), studies on the financial aspects based on large population -based data are needed. This study aimed to analyze the differences in medical expenses and the effect of ICIs on the prognosis of patients with advanced or metastatic NSCLC. Methods: Patients newly diagnosed with stage IIIB or IV NSCLC who received palliative chemotherapy between 2013 and 2020 were selected from the nationwide database of the population covered by the Korean National Health Insurance Service. Interrupted time -series analysis was performed to evaluate the effects of subsequent ICI use after platinum -based cytotoxic chemotherapy (CC) on overall mortality. Progression -free survival and medical expenditure were also assessed. Results: In the final study population, 2,485 and 4,812 patients were included in the ICI and non -ICI groups, respectively. ICI treatment significantly lowered the risk of death [adjusted hazard ratio, 0.79; 95% confidence interval (CI): 0.75-0.84]. And the ICI -treated patients were less likely to experience disease progression (adjusted odds ratios, 0.92; 95% CI: 0.85-0.99). Furthermore, after the introduction of ICIs, both total and cancer -related medical expenses per capita showed an increasing trend [(3: $4.56K, standard error (SE): $0.27K, P<0.0001 and (3: $4.54K, SE: $0.27K, P<0.0001, respectively]. Conclusions: Subsequent ICI use after platinum -based CC improved the overall survival rate of patients with advanced NSCLC. With the increasing burden of individual medical expenses, further research is required to identify patients for whom ICI treatment may be effective.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Chi Young(김치영)
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