Frank A. Scappaticci, MD, PhD

Syed and Rowinsky present acomprehensive review of newtargeted therapies for breast cancer.This is an important review thatsummarizes new biologic targets andcurrent drugs in development for thetreatment of breast cancer-a rapidlyevolving field. Among the targets addressedin the article are epidermalgrowth factor receptor (EGFR), Ras/Raf/mitogen-activated protein (MAP)kinase, phosphatidylinositol 3-kinase(PI3K)/protein kinase B (AkT)/moleculartarget of rapamycin (mTOR), tumorangiogenesis, apoptosis, andhistone deacetylases. The list shouldalso be expanded to include differentiatingagents and inhibitors of invasionand metastasis. It is critical toemphasize the future of customizedtherapy and the use of biologic agentsalone, together, or in combination withchemotherapy for the treatment ofbreast cancer.