Figure 2.

Distribution of EGFR exon 18 point mutations, exon 19 deletions, exon 20 insertions, and exon 21 point mutations in never smoking female adenocarcinomas (n = 32), squamous cell carcinomas (n = 7), and all lung cancers (n = 40) from Xuanwei, China†.

† One tissue had two unique EGFR point mutations; Total number of EGFR point mutations, deletions, and insertions present in the Xuanwei samples is 12 among adenocarcinomas, 2 among squamous cell carcinomas, and 14 among all lung cancers; * Mutation rates among never smoking females in Asia reported by (Zhang et al 2012); ** Mutation rates typically found when summarizing all lung cancer histologies, across multiple ethnicities including both those that do and do not smoke tobacco, reported by (Shigematsu and Gazdar 2006).