Whole genome distribution of somatic mutations and duplication or deletion events in diffuse-type gastric cancers (DGCs). All the somatic mutations, including duplication/deletion events, which were found in the 14 DGC genomes, are merged in the circus plot. From outside to inside, the plot presents the following characteristics: chromosome ideograms, frequency of cumulative amplification or deletion events (black, amplification; red, deletion), and the number of somatic non-synonymous single nucleotide variations (nsSNVs), indels, and SNVs in splice sites for each gene. Black triangles indicate highly mutated genes. Orange triangles denote oncogenes, and blue triangles indicate the tumor suppressors.