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- BRCA_mutation abstract "A BRCA mutation is a mutation in either of the genes BRCA1 and BRCA2. Harmful mutations in these tumor suppressor genes produce a hereditary breast-ovarian cancer syndrome in affected families. Mutations in BRCA1 and BRCA2 are uncommon, and breast cancer is relatively common, so these mutations consequently account for only five to ten percent of all breast cancer cases in women.Hundreds of different types of mutations in these genes have been identified. High-risk mutations, which disable an important error-free DNA repair process (homology directed repair), significantly increase the person's risk of developing breast cancer, ovarian cancer and certain other cancers. Why BRCA1 and BRCA2 mutations lead preferentially to cancers of the breast and ovary is not known, but lack of BRCA1 function seems to lead to non-functional x-chromosome inactivation. Not all mutations are high-risk; some appear to be harmless variations. The cancer risk associated with any given mutation varies significantly and depends on the exact type and location of the mutation and possibly other individual factors.Women with harmful mutations in either BRCA1 or BRCA2 have risk of breast cancer that is about five times the normal risk, and a risk of ovarian cancer that is about ten to thirty times normal. BRCA1 mutations typically confer a higher risk of breast and ovarian cancer in women than BRCA2 mutations. Having a high-risk mutation does not guarantee that the woman will develop any type of cancer, or guarantee that any cancer that appears was actually caused by the mutation, rather than some other factor, like alcohol consumption.Mutations can be inherited from either parent and may be passed on to both sons and daughters. Each child of a genetic carrier, regardless of sex, has a 50% chance of inheriting the mutated gene from the parent who carries the mutation. As a result, half of the people with BRCA gene mutations are male. The risk of BRCA-related breast cancers for men with the mutation is higher than for other men, but still low. However, BRCA mutations can increase the risk of other cancers, such as colon cancer, pancreatic cancer, and prostate cancer.Methods to diagnose the likelihood of a patient with mutations in BRCA1 and BRCA2 getting cancer were covered by patents owned or controlled by Myriad Genetics. Myriad's business model of exclusively offering the diagnostic test led from Myriad being a startup in 1994 to being a publicly traded company with 1200 employees and about $500M in annual revenue in 2012; it also led to controversy over high prices and the inability to get second opinions from other diagnostic labs, which in turn led to the landmark Association for Molecular Pathology v. Myriad Genetics lawsuit.".
- BRCA_mutation thumbnail Autodominant_en.svg?width=300.
- BRCA_mutation wikiPageExternalLink test.
- BRCA_mutation wikiPageExternalLink T2.
- BRCA_mutation wikiPageExternalLink boadicea_intro.html.
- BRCA_mutation wikiPageExternalLink BRCA-gene.aspx.
- BRCA_mutation wikiPageID "26799151".
- BRCA_mutation wikiPageRevisionID "606643634".
- BRCA_mutation barWidth "20".
- BRCA_mutation data "53".
- BRCA_mutation data "71".
- BRCA_mutation data "84".
- BRCA_mutation dataMax "85".
- BRCA_mutation dataType "Percentage surviving to age 70".
- BRCA_mutation hasPhotoCollection BRCA_mutation.
- BRCA_mutation label "BRCA1 mutation".
- BRCA_mutation label "BRCA2 mutation".
- BRCA_mutation label "Typical woman".
- BRCA_mutation labelType "Group".
- BRCA_mutation title "'''".
- BRCA_mutation title "Likelihood of a 25-year-old woman surviving to age 70".
- BRCA_mutation widthUnits "em".
- BRCA_mutation subject Category:Breast_cancer.
- BRCA_mutation subject Category:Hereditary_cancers.
- BRCA_mutation subject Category:Mutation.
- BRCA_mutation subject Category:Ovarian_cancer.
- BRCA_mutation type Abstraction100002137.
- BRCA_mutation type Attribute100024264.
- BRCA_mutation type Cancer114239918.
- BRCA_mutation type Condition113920835.
- BRCA_mutation type Disease114070360.
- BRCA_mutation type Growth114234074.
- BRCA_mutation type HereditaryCancers.
- BRCA_mutation type IllHealth114052046.
- BRCA_mutation type Illness114061805.
- BRCA_mutation type Malignancy114237561.
- BRCA_mutation type MalignantTumor114239425.
- BRCA_mutation type PathologicalState114051917.
- BRCA_mutation type PhysicalCondition114034177.
- BRCA_mutation type State100024720.
- BRCA_mutation type Tumor114235200.
- BRCA_mutation comment "A BRCA mutation is a mutation in either of the genes BRCA1 and BRCA2. Harmful mutations in these tumor suppressor genes produce a hereditary breast-ovarian cancer syndrome in affected families. Mutations in BRCA1 and BRCA2 are uncommon, and breast cancer is relatively common, so these mutations consequently account for only five to ten percent of all breast cancer cases in women.Hundreds of different types of mutations in these genes have been identified.".
- BRCA_mutation label "BRCA mutation".
- BRCA_mutation sameAs Μετάλλαξη_BRCA.
- BRCA_mutation sameAs m.0bmfk5g.
- BRCA_mutation sameAs Q4836333.
- BRCA_mutation sameAs Q4836333.
- BRCA_mutation sameAs BRCA_mutation.
- BRCA_mutation wasDerivedFrom BRCA_mutation?oldid=606643634.
- BRCA_mutation depiction Autodominant_en.svg.
- BRCA_mutation isPrimaryTopicOf BRCA_mutation.