Genetic hits and mutation rate in colorectal tumorigenesis: Versatility of Knudson's theory and implications for cancer prevention

The multistep model of carcinogenesis is now widely accepted for colorectal cancer and other common epithelial tumors of the adult. The challenges ahead are to define the number of genetic hits necessary for conversion of a normal cell into a cancer cell and to determine whether the observed increas...

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Bibliographic Details
Published in:Genes chromosomes & cancer 2003-12, Vol.38 (4), p.382-388
Main Author: Bellacosa, Alfonso
Format: Article
Language:English
Subjects:
Adenoma - etiology
Adenoma - genetics
Adenoma - prevention & control
Colorectal Neoplasms - etiology
Colorectal Neoplasms - genetics
Colorectal Neoplasms - prevention & control
Humans
Models, Genetic
Mutation
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Summary:The multistep model of carcinogenesis is now widely accepted for colorectal cancer and other common epithelial tumors of the adult. The challenges ahead are to define the number of genetic hits necessary for conversion of a normal cell into a cancer cell and to determine whether the observed increase in the mutation rate (mutator phenotype) is required. The beauty of Knudson's two‐hit theory is its ability to explain diverse experimental situations and guide specific predictions, including some directly relevant to cancer prevention. © 2003 Wiley‐Liss, Inc.
ISSN:1045-2257
1098-2264
DOI:10.1002/gcc.10287