Fig. 1From: Thyroid transcription factor-1 as a prognostic indicator for stage IV lung adenocarcinoma with and without EGFR-sensitizing mutationsSurvival stratified by TTF-1 expression (a), EGFR mutation status (b), and by both TTF-1 and EGFR mutations (c). Abbreviations: TTF-1, thyroid transcription factor-1; EGFR, epidermal growth factor receptorBack to article page