We have previously described K-Ras mutations at codons 12, 13 and 61 in a series of 106 unselected colorectal tumours. Our K-Ras mutation analysis was performed by direct sequencing of K-Ras exon 1 (codons 12 and 13) and
[Paragraph-level] PMCID: PMC2837563 Section: RESULTS PassageIndex: 3
Evidence Type(s): Diagnostic, Oncogenic
Justification: Diagnostic: The passage discusses the detection of specific mutations in colorectal tumors, indicating their association with the disease, which supports their use in defining or classifying the disease. Oncogenic: The mention of mutations at codon 19 (G57T, Leu19Phe) and in B-Raf (V600E) suggests that these somatic variants may contribute to tumor development, as they are found in tumor samples.
Gene→Variant (gene-first): 673:G57T 3845:Leu19Phe 673:V600E
Genes: 673 3845
Variants: G57T Leu19Phe V600E