Edwards Syndrome

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Nov 13, 2013
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Edwards syndrome (also known as Trisomy 18 (T18) or Trisomy E) is a genetic disorder caused by the presence of all or part of an extra 18th chromosome. It is named after John H. Edwards, who first described the syndrome in 1960. It is the second most common autosomal trisomy, after Down syndrome, that carries to term.

Edwards syndrome is caused by the presence of three – as opposed to two – copies of chromosome 18 in a fetus's or infant's cells. Edwards' syndrome occurs in around one in 6,000 live births and around 80 per cent of those affected are female. The majority of fetuses with the syndrome die before birth. The incidence increases as the mother's age increases. The syndrome has a very low rate of survival, resulting from heart abnormalities, kidney malformations, and other internal organ disorders.

This text uses material from Wikipedia licensed under CC BY-SA

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