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Biochim Biophys Acta. 2004 Jun 7;1654(2):105-22.

Haploinsufficiency for tumour suppressor genes: when you don't need to go all the way.

Author information

1
The Breakthrough Breast Cancer Research Centre, Institute of Cancer Research, 237 Fulham Road, London SW3 6JB, UK.

Abstract

Classical tumour suppressor genes are thought to require mutation or loss of both alleles to facilitate tumour progression. However, it has become clear over the last few years that for some genes, haploinsufficiency, which is loss of only one allele, may contribute to carcinogenesis. These effects can either be directly attributable to the reduction in gene dosage or may act in concert with other oncogenic or haploinsufficient events. Here we describe the genes that undergo this phenomenon and discuss possible mechanisms that allow haploinsufficiency to display a phenotype and facilitate the pathogenesis of cancer.

PMID:
15172699
DOI:
10.1016/j.bbcan.2004.01.001
[Indexed for MEDLINE]

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