An Introduction to KS

Klinefelter’s Syndrome (KS) is  a common congenital condition which is found in around 1 in 600 live male births and is caused by the presence of one or more additional sex chromosomes. Chromosomes are genetic material. Males typically have one X and one Y chromosome (XY) and females have two X chromosomes (XX). Klinefelter’s Syndrome is characterised by the presence of an additional chromosome (XXY).

KS is diagnosed by a genetic blood test which identifies any abnormalities in the karyotype i.e. the number, size and shape of the chromosomes.

If you would like to talk to someone please call our Helpline: 0300 111 47 48. Please remember that, as the KSA is run entirely by volunteers, sometimes there may not be anyone available to take your call. Please leave a message with your email address or phone number (landline, if possible) and we will get back to you.

Next… KS or XXY