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Genetic variation of enzyme linked with outcomes for women receiving tamoxifen

Published in Women's Health Weekly, October 22nd, 2009

This release is available in Chinese.

Among women with early stage breast cancer, genetic variation of a certain enzyme appears to be associated with clinical outcomes for women treated with tamoxifen, according to a study in the October 7 issue of JAMA.

"Tamoxifen has been the gold standard for the last 25 years for endocrine treatment of breast cancer. It is estimated that the lives of half a million women have been saved with adjuvant [supplemental] tamoxifen therapy," according to background information in the article. The growth inhibitory effect of tamoxifen is mediated by its metabolites, 4-hydroxytamoxifen and endoxifen. The formation of...

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