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(A) Progression-free survival (PFS) of first-line epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitor (TKI) versus T790M mutation status of rebiopsy by Kaplan-Meier survival curve analysis. (B) PFS of first-line EGFR-TKI versus T790M mutation status of rebiopsy and baseline EGFR mutation status by Kaplan-Meier survival curve analysis.
