Fig. 2From: EGFR plasma mutation in prediction models for resistance with EGFR TKI and survival of non-small cell lung cancerProgression-free survival between groups: EGFR plasma after treatment (a£, bǂ); secondary T790M mutation (c£, dǂ); brain metastasis after treatment (e£, fǂ). £: all patients; ǂ: the newly diagnosed group. EGFR epidermal growth factor receptorBack to article page