HER2-positive breast cancer is a breast cancer that tests positive for a protein called human epidermal growth factor receptor 2 (HER2). This protein promotes the growth of cancer cells. In about 1 of every 5 breast cancers, the cancer cells have extra copies of the gene that makes the HER2 protein.

Where does HER2 protein come from?

Human epidermal growth factor receptor 2 (HER2) is a gene that creates HER2 proteins. HER2 proteins are found on the surface of breast cells and promote breast cell growth.

Is HER2 A protein?

HER2 is a growth-promoting protein on the outside of all breast cells. Breast cancer cells with higher than normal levels of HER2 are called HER2-positive. These cancers tend to grow and spread faster than other breast cancers, but are much more likely to respond to treatment with drugs that target the HER2 protein.

What type of molecule is HER2?

HER2 is a membrane tyrosine kinase and oncogene that is overexpressed and gene amplified in about 20% of breast cancers. When activated it provides the cell with potent proliferative and anti-apoptosis signals and it is the major driver of tumor development and progression for this subset of breast cancer.

What does Neu mean?

NEU. Network Encryption Unit. NEU. Neutral Merchant Ship. Copyright 1988-2018 AcronymFinder.com, All rights reserved.

What happens when BRCA1 is mutated?

BRCA1 gene mutations cause breast cancer in women with a possibility of 60% to 80% and also cause increased risk of ovarian cancer development in women and prostate cancer in men.

What does luminal A mean?

Group 1 (luminal A). This group includes tumors that are ER positive and PR positive, but negative for HER2. Luminal A breast cancers are likely to benefit from hormone therapy and may also benefit from chemotherapy.

What is a luminal a tumor?

Luminal A. Luminal tumor cells look the most like cells of breast cancers that start in the inner (luminal) cells lining the mammary ducts. Luminal A tumors tend to be: Estrogen receptor-positive (ER-positive) HER2 receptor-negative (HER2-negative)

What does Lvx Veritas Virtvs mean?

Light, Truth, Courage
The Forsyth Building on Northeastern’s Boston campus features the Northeastern motto “Lux, Veritas, Virtus,” Latin for “Light, Truth, Courage.”

What is HER2/neu and why is it important?

HER2/neu (often just shortened to HER2) is a growth-promoting protein on the outside of all breast cells. Breast cancer cells with higher than normal levels of HER2 are called HER2-positive. These cancers tend to grow and spread faster than other breast cancers.

What does HER2 positive mean for breast cancer?

Breast cancer cells with higher than normal levels of HER2 are called HER2-positive. These cancers tend to grow and spread faster than other breast cancers, but are much more likely to respond to treatment with drugs that target the HER2 protein. How are breast tumors tested for HER2?

What is the role of her2-her3 heterodimer?

The HER2-HER3 heterodimer is the most potent stimulator of downstream pathways, particularly the PI3K/Akt, a master regulator of cell growth and survival. Moreover, HER2 dimerization promotes the mislocalization and rapid degradation of cell-cycle inhibitor p27Kip1protein leading to cell-cycle progression [7, 10, 11].

What does it mean if my HER2 level is 2+?

If the result is 2+, the HER2 status of the tumor is not clear and is called “equivocal.”. This means that the HER2 status needs to be tested with FISH to clarify the result. Triple-negative breast tumors don’t have too much HER2 and also don’t have estrogen or progesterone receptors.