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patau syndrome

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Patau syndrome /ˈpætaʊ/ is a syndrome caused by a chromosomal abnormality, in which some or all of the cells of the body contain extra genetic material from chromosome 13 . This can occur either because each cell contains a full extra copy of chromosome 13 (a disorder known as trisomy 13 or trisomy D ), or because each cell contains an extra partial copy of the chromosome (i.e., Robertsonian translocation ) or because of mosaic Patau syndrome. Full trisomy 13 is caused by nondisjunction of chromosomes during meiosis (the mosaic form is caused by nondisjunction during mitosis ). The extra genetic material from chromosome 13 disrupts the normal course of development, causing multiple and complex organ defects. Like all nondisjunction conditions (such as Down syndrome and Edwards syndrome ), the risk of this syndrome in the offspring increases with maternal age at pregnancy, with about 31 years being the average. [1] Patau syndrome affects somewhere between 1 in 10,000 and 1 in 21,700 live births. [2]

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A description of Patau Syndrome

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Patau syndrome / pta / is a syndrome caused by a chromosomal abnormality, in which some or all of the cells of the body contain extra genetic material from chromosome 13. This can occur either because each cell contains a full extra copy of chromosome 13 (a disorder known as trisomy 13 or trisomy D, or because each cell contains an extra partial copy of the chromosome (i.e.,!obertsonian translocation or because of mosaic "atau syndrome. #ull trisomy 13 is caused by nondis$unction of chromosomes during meiosis (the mosaic form is caused by nondis$unction during mitosis. The extra genetic material from chromosome 13 disrupts the normal course of de%elopment, causing multiple and complex organ defects. &ike all nondis$unction conditions (such as'own syndrome and (dwards syndrome, the risk of this syndrome in the offspring increases with maternal age at pregnancy, with about 31 years being the a%erage.)1* "atau syndrome affects somewhere between 1 in 1+,+++ and 1 in ,1,-++ li%e births.),*


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