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Breast Cancer

Estrogen receptor promoter methylation is an early marker for premalignant lesions

Published in Women's Health Weekly, February 23rd, 2006

According to a study from Germany, methylation of estrogen receptor (ER) beta promoter correlates with loss of ER-beta expression in mammary carcinoma and is an early indication marker for premalignant lesions.

"The function of ER-beta in mammary tissue is not completely understood. While early observations were often conflicting, more recent data suggest an important role as a tumor-suppressor gene," wrote A. Rody and colleagues, University of Frankfurt.

"A decrease of ER-beta expression has been observed in ductal carcinoma in situ and invasive carcinoma as compared with benign mammary epithelial cells. The loss of ER-beta resulted in abnormal...

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