XYY syndrome
A chromosomal variation with an additional Y chromosome. The 2016 S3 guideline on assessment lists it in a table of genetic findings in autism; how often it occurs is not reproduced here.
- Also called
- 47,XYY
XYY syndrome refers to a chromosomal variation with an additional Y chromosome. The 2016 S3 guideline on assessment lists it in its table “Common monogenic and chromosomal findings in autism spectrum disorder” as a chromosomal abnormality alongside Klinefelter syndrome (XXY). [1, Ch. A.5.2, Table 9]
The figures in the table cannot be assigned unambiguously to individual rows in the text; this entry therefore gives no frequencies. The guideline has expired (valid “until 04.04.2021”) and is being revised; the entry only explains how it presented the topic. Whether and when a genetic examination makes sense is decided by the treating professional. More background: Genetics in autism.
Sources and literature
- DGKJP/DGPPN et al.: Autismus-Spektrum-Störungen im Kindes-, Jugend- und Erwachsenenalter, Teil 1: Diagnostik. Interdisziplinäre S3-Leitlinie, AWMF-Reg.-Nr. 028-018, Stand Text 23.02.2016. https://register.awmf.org/assets/guidelines/028-018l_S3_Autismus-Spektrum-Stoerungen_ASS-Diagnostik_2016-05-abgelaufen.pdf
In detail: Genetics and autism: inheritance, genetic tests and recurrence risk
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Genetics and autism: inheritance, genetic tests and recurrence risk
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