Figure 1From: A retrospective observational study of clinicopathological features of KRAS, NRAS, BRAF and PIK3CA mutations in Japanese patients with metastatic colorectal cancerAssociations between KRAS, NRAS, BRAF and PIK3CA mutations. All mutations in KRAS codons 12 and 13, KRAS codons 61 and 146, BRAF and NRAS were mutually exclusive. Mutations in PIK3CA exons 9 and 20 overlapped with those in KRAS codons 12 and 13 and BRAF.Back to article page