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Men with breast cancer have an absolute risk of presenting with a second cancer in their other breast of 1.75, i.e. they have a 75% increase of developing a contralateral breast cancer over their lifetimes compared to men who develop a breast cancer without having had a prior breast cancer. [5]
Molecular classification of breast cancer from mRNA expression profiles. DNA microarrays have compared normal cells to breast cancer cells and found differences in the expression of hundreds of genes. Although the significance of many of those genetic differences is unknown, independent analyses by different research groups has found that ...
There are two different forms of the estrogen receptor, usually referred to as α and β, each encoded by a separate gene (ESR1 and ESR2, respectively).Hormone-activated estrogen receptors form dimers, and, since the two forms are coexpressed in many cell types, the receptors may form ERα (αα) or ERβ (ββ) homodimers or ERαβ (αβ) heterodimers. [3]
The ERRs are orphan nuclear receptors, meaning the identity of their endogenous ligand has yet to be unambiguously determined.They are named because of sequence homology with estrogen receptors, but do not appear to bind estrogens or other tested steroid hormones.
The ERT has been suggested as a predictor for the level of success of the use of endocrine therapy in cancer treatment. Many of the endocrine therapies for breast cancer treatments involve the use of selective estrogen receptor modulators (SERMs). SERMs, such as tamoxifen, are ER antagonists in breast tissue. Estrogen receptor tests are used in ...
Most cancer isn't caused by BRCA mutations — they account for 5 percent to 10 percent of breast cancers and 15 percent of ovarian cancers — so the gene tests aren't for everyone. But mutations ...
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