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• W2943846365 abstract "Second-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) appear superior to first-generation TKIs in clinical trials, but at the cost of greater toxicity. It is unclear whether real-world patients, who often suffer worse outcomes, experience similar survival benefits. Using population-based data, we aim to characterize outcome differences by type of treatment.We reviewed all patients with advanced non-small-cell lung cancer who initiated treatment with an EGFR TKI at BC Cancer between 2010 and 2015. A propensity score was generated to account for imbalances in patient characteristics between treatment groups. A Cox proportional hazards model based on the propensity score was then used to estimate effects of treatment on survival.A total of 484 patients were identified for analysis. Patients in the second-generation cohort were younger (62 vs. 67 years), had less baseline central nervous system metastases (9% vs. 22%), and more uncommon EGFR mutations (13% vs. 7%). Patients receiving a second-generation TKI had an improved overall survival (hazard ratio, 0.69; P = .05), driven by the subgroup with an EGFR exon 19 deletion. Patients with a L858R mutation did not appear to derive benefit from a second-generation TKI (hazard ratio, 0.91; P = .74). Overall, 40% of patients receiving a second-generation TKI required a dose reduction, but only 1% required discontinuation.Second-generation TKIs tended to be chosen over first-generation TKIs as frontline therapy in younger patients with uncommon EGFR mutations and without central nervous system metastases. The survival benefit of a second-generation TKI seen in clinical trials appeared to be generalizable to real-world patients and is a reasonable first-line therapy." @default.
• W2943846365 created "2019-05-16" @default.
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• W2943846365 date "2019-09-01" @default.
• W2943846365 modified "2023-10-15" @default.
• W2943846365 title "Outcome Differences Between First- and Second-generation EGFR Inhibitors in Advanced EGFR Mutated NSCLC in a Large Population-based Cohort" @default.
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• W2943846365 doi "https://doi.org/10.1016/j.cllc.2019.05.003" @default.
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