XXY47 Klinefelters Syndrome

Welcome to XXY47

Klinefelter's syndrome is a fairly common yet often unrecognized condition. Recent statistics show that about one in 450 boys is born with an extra X chromosome, XXY is the most common sex chromosome anomaly. The symptoms are varied and often nonspecific. Sometimes not present at all, but nearly all KS men are sterile. Many men are diagnosed only when fertility issues arise. Learning and behavior issues are common in boys born XXY. In this website we have published articles and added links to help educate and inform the people who are affected.

XXY47 Klinefelters Syndrome is a Non Profit Organisation.

NPO 151-234

Discussing Klinefelter Syndrome
- Cape Town TV 2014
Klinefelters Syndrome affects physical and cognitive development. It also impacts social skills and self esteem.

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Klinefelters syndrome is a chromosomal anomaly where boys are born with 1 extra X chromosome.
Boys have small under-developed testes which cannot produce sufficient testosterone.
This causes a number of secondary symptoms.

Drs. Marit Bierman. Getting Through the Day: The Impact of Klinefelter Syndrome on Psychological Functioning

Getting Through the Day:
The Impact of Klinefelter Syndrome on
Psychological Functioning.

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