Genome-wide analysis of non-coding indel recurrence. a Workflow of the method to detect recurrently mutated non-coding regions. b Genome-wide negative log P-values of indel recurrence of 21 bp regions with at least one indel. The horizontal line marks the Bonferroni adjusted P-value of 0.01. c Negative log P-value of indel recurrence in merged non-coding regions of each gene. The top three significantly mutated genes are highlighted. The horizontal line marks the Bonferroni adjusted P-value of 0.01. d–f Gene expression of LIPF (d), PGC (e), and MUC6 (f) in normal gastric samples, tumors wildtype for the gene of interest, and tumors with non-coding indels in the gene of interest