✦ LIBER ✦

Recurrence risks for down syndrome

✍ Scribed by Tamara June Lister; O. Frota-Pessoa

Book ID: 104707613
Publisher: Springer
Year: 1980
Tongue: English
Weight: 454 KB
Volume: 55
Category: Article
ISSN: 0340-6717
DOI: 10.1007/bf00291768

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✦ Synopsis

The recurrence risks for Down syndrome due to an inherited translocation are estimated from empirical data in the literature for two maternal age groups: mothers under 30 and mothers 30 and over. These risks were found to be approximately 0.3% and 0.05%, respectively. The probability for two Down syndrome sibs both having an inherited translocation was estimated as about 18.2% for the former age group and 2.7% for the latter. The relative effectiveness in preventing. Down syndrome births by karyotyping affected children is discussed.

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