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Chapter 43 - Edwards Syndrome - Trisomy 18

from Genetic Syndromes and Phakomatoses

Published online by Cambridge University Press:  07 August 2021

Mirna Lechpammer
Affiliation:
New York University School of Medicine
Marc Del Bigio
Affiliation:
University of Manitoba, Canada
Rebecca Folkerth
Affiliation:
New York University School of Medicine
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Summary

Edwards syndrome (ES) or trisomy 18 is a chromosomal disorder caused by the presence of an extra copy of chromosome 18 in some or all body cells. The syndrome was first recognized and described in 1960 by a British physician, John H. Edwards, professor of genetics at Birmingham and Oxford [1]. Although a rare disease, ES is the second most common chromosomal aberration after Down syndrome. Trisomy 18 is associated with multiple malformations, which are often incompatible with life, combined with psychomotor and cognitive disability. The prevalence of trisomy 18 varies between 1 in 3,000 to 1 in 8,000 live births. Due to the higher frequency of male fetuses’ loss and better survival of females with ES, the male to female ratio is 1:3. The risk of developing ES increases with the maternal age [2, 3, 4].

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Publisher: Cambridge University Press
Print publication year: 2021

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References

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