Researchers show how ER-positive breast cancer tumors become resistant to tamoxifen

[News]

Researchers have shown how estrogen receptor-positive breast cancer tumors become resistant to tamoxifen, the only approved hormonal therapy for premenopausal patients with this type of breast cancer.

More... (http://www.news-medical.net/news/20111114/Researchers-show-how-ER-positive-breast-cancer-tumors-become-resistant-to-tamoxifen.aspx)