dbo:abstract
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- Fragile X-associated Primary Ovarian Insufficiency (FXPOI) is the most common genetic cause of premature ovarian failure in women with a normal karyotype 46, XX. The expansion of a CGG repeat in the 5' untranslated region of the FMR1 gene from the normal range of 5-45 repeats to the premutation range of 55-199 CGGs leads to risk of FXPOI for ovary-bearing individuals. About 1:150-1:200 women in the US population carry a premutation. Women who carry an FMR1 premutation have a roughly 20% risk of being diagnosed with FXPOI, compared to 1% for the general population, and an 8-15% risk of developing the neurogenerative tremor/ataxia disorder (FXTAS). FMR1 premutation women are also at increased risk of having a child with a CGG repeat that is expanded to >200 repeats (a full mutation). Individuals with a full mutation, unlike the premutation, produce little to no mRNA or protein from the FMR1 gene and are affected with Fragile X syndrome. (en)
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- 20414 (xsd:nonNegativeInteger)
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dbp:causes
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dbp:diagnosis
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dbp:name
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- Fragile X-associated Primary Ovarian Insufficiency (en)
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dbp:pronounce
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dbp:specialty
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- genetics, reproductive endocrinology (en)
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dbp:symptoms
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- Elevated follicle stimulating hormone and loss of menstrual cycles before age 40 (en)
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dbp:synonym
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- premature ovarian failure (en)
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dbp:treatment
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- infertility: may use assisted reproductive technologies
risk of FMR1 premutation expansion: genetic testing for CGG repeat expansion in embryos or fetuses (en)
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rdfs:comment
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- Fragile X-associated Primary Ovarian Insufficiency (FXPOI) is the most common genetic cause of premature ovarian failure in women with a normal karyotype 46, XX. The expansion of a CGG repeat in the 5' untranslated region of the FMR1 gene from the normal range of 5-45 repeats to the premutation range of 55-199 CGGs leads to risk of FXPOI for ovary-bearing individuals. About 1:150-1:200 women in the US population carry a premutation. Women who carry an FMR1 premutation have a roughly 20% risk of being diagnosed with FXPOI, compared to 1% for the general population, and an 8-15% risk of developing the neurogenerative tremor/ataxia disorder (FXTAS). FMR1 premutation women are also at increased risk of having a child with a CGG repeat that is expanded to >200 repeats (a full mutation). Individ (en)
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rdfs:label
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- Fragile X-associated primary ovarian insufficiency (en)
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