Fig. 2From: Differential significance of molecular subtypes which were classified into EGFR exon 19 deletion on the first line afatinib monotherapyWaterfall plots of overall response rate according to different exon 19 deletion molecular variants (n = 26). The numbers on the X-axis are case numbers. A dashed line means 30% decline of tumor volume; partial response. 15n-del: 15-nucleotide deletion subgroup; 18n-del: 18-nucleotide deletion subgroup; other: other/ mixed insertion/substitution variant subgroupBack to article page