The primary hormone receptors tested in cancer diagnostics are:
1. Estrogen Receptors (ER): These receptors bind to estrogen, a hormone that can promote the growth of breast cancer cells. 2. Progesterone Receptors (PR): These receptors bind to progesterone, another hormone that can influence the growth of breast cancer cells. 3. HER2/neu Receptors: Although not a hormone receptor, HER2 is a protein that can affect the growth of cancer cells. HER2-positive cancers can be more aggressive but may respond well to targeted therapies such as trastuzumab (Herceptin).
