BRAF and colorectal cancer: The BRAF gene is mutated in approximately 7 % of human cancers overall [8], specifically, 40 % to 60 % of malignant melanomas [9], 10 % to 15 % of colorectal cancers (CRCs) [10], and 1 to 5 % of non-small cell lung cancers (NSCLC) [11, 12].