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HER2 positive cancer refers to a type of cancer that tests positive for the human epidermal growth factor receptor 2 (HER2) protein. This receptor is part of a network that regulates cell growth and division. When there is an overexpression of HER2, it leads to more aggressive tumor growth and a higher likelihood of metastasis.
Progesterone receptors (PR) play a role, in controlling reproductive functions and are essential for maintaining reproductive health by responding to progesterone effects in the body. They function by interacting with the progesterone hormone to trigger responses necessary for reproduction.
ER positive breast cancer is characterized by the presence of estrogen receptors on the surface of the tumor cells. In this context, estrogen plays a significant role in promoting the growth of these cancer cells.
HER2, or Human Epidermal growth factor Receptor 2, is a protein that plays a critical role in regulating cell growth and division. It is a member of the HER family of receptors, which are found on the surface of cells. In the context of breast cancer, HER2 is noteworthy due to its role as an oncogene.