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. 1993 May;34(5):621–624. doi: 10.1136/gut.34.5.621

p53 expression and K-ras mutation in colorectal adenomas.

N Scott 1, S M Bell 1, P Sagar 1, G E Blair 1, M F Dixon 1, P Quirke 1
PMCID: PMC1374178  PMID: 8504962

Abstract

The frequency of p53 overexpression and K-ras codon 12 mutation was investigated in a series of colorectal adenomas. p53 was detected by immunohistochemistry in only 5% of tumours, whereas K-ras mutation was found in eight of 30 adenomas examined. In vitro, mutant p53 and ras genes cooperate to transform primary rat cells into a tumourigenic cell line. The presence of both p53 overexpression and K-ras mutation in a benign tubulovillous polyp in the present series suggests that in vivo this combination of events is insufficient to cause malignant transformation of a large bowel adenoma.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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