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A reason why the ERBB2 gene is amplified and not mutated in breast cancer

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Author(s): Birnbaum Daniel | Sircoulomb Fabrice | Imbert Jean

Journal: Cancer Cell International
ISSN 1475-2867

Volume: 9;
Issue: 1;
Start page: 5;
Date: 2009;
Original page

ABSTRACT
Abstract Alterations of receptor-type tyrosine kinases (RTK) are frequent in human cancers. They can result from translocation, mutation or amplification. The ERBB2 RTK is encoded by a gene that is amplified in about 20% breast cancers. The question is: why is this RTK specifically subjected to this type of alteration? We propose that ERBB2 gene amplification is used to overcome repression of its expression by sequence-specific transcription factors.
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