insulin like growth factor-2

Biologic Roles of Estrogen Receptor –β and Insulin-Like Growth Factor-2 in Triple-Negative Breast Cancer

Triple-negative breast cancer (TNBC) occurs in 10-15% of patients yet accounts for almost half of all breast cancer deaths. TNBCs lack expression of estrogen and progesterone receptors and HER-2 overexpression and cannot be treated with current targeted therapies. TNBCs often occur in African American and younger women. Although initially responsive to some chemotherapies, TNBCs tend to relapse and metastasize. Thus, it is critical to find new therapeutic targets. A second ER gene product, termed ERβ, in the absence of ERα may be such a target.

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