This paper was presented at the International Symposium THE HUMAN GENOME, in Naples, September 6–8, 2000 on the occasion of the Great Jubilee of the year 2000.
Version of Record online: 7 JUN 2002
Copyright © 2002 Wiley-Liss, Inc.
American Journal of Medical Genetics
Volume 111, Issue 1, pages 96–102, 22 July 2002
How to Cite
Knudson, A. G. (2002), Cancer genetics. Am. J. Med. Genet., 111: 96–102. doi: 10.1002/ajmg.10320
- Issue online: 9 JUL 2002
- Version of Record online: 7 JUN 2002
- Manuscript Accepted: 29 DEC 2001
- Manuscript Received: 2 FEB 2001
- National Institutes of Health. Grant Number: CA06927
- Commonwealth of Pennsylvania
- mutational equilibrium;
- somatic mutation;
- chromosomal translocation;
- DNA repair genes;
- tumor suppressor genes;
- transcription factors;
- signal transduction;
- cell cycle;
Cancer is a genetic disease of somatic cells. Tumor karyotypes are rarely normal, and most show multiple abnormalities of both number and structure. The first direct evidence for this concept of cancer came from studies of tumor-specific translocations in leukemias and lymphomas, revealing the importance of oncogenes and the regulation of gene transcription in cancer. A second major source of information about human cancer genes is hereditary cancer. Genetic predisposition of the autosomal dominant type imposes a high relative risk for one or more kinds of cancer. In the past decade or so, more than 30 mutant genes for such hereditary cancers have been cloned. Penetrance depends upon additional, somatic, mutations. A few of the genes are oncogenes or DNA repair genes, but most are tumor suppressor genes. Some tumor suppressors regulate transcription, while others operate in signal transduction pathways that are involved in regulating processes of cell birth, differentiation, and death. The knowledge gained is stimulating new approaches to the treatment and prevention of cancer. © 2002 Wiley-Liss, Inc.