Fig. 2.

Kaplan–Meier plots showing progression-free and overall survival according to both BSA and mutation type. a The median PFS times in the exon 19 deletion_low-BSA and exon 21 L858R_low-BSA groups. b The median PFS times in the exon 19 deletion_high-BSA and exon 21 L858R_high-BSA groups. c The median OS times in the exon 19 deletion_low-BSA and exon 21 L858R_low-BSA groups; the difference was statistically significant. d The median OS times in the exon 19 deletion_high-BSA and exon 21 L858R_high-BSA groups