Kline-felter syndrome

Kline-felter syndrome is a genetic disorder found in males adding an extra X chromosme to the normal male karyotype. These individuals are usuallly refered to as 47,XXY males.

This karyotype is usually present in only 1:500 to 1:1000 live births but is the most common sex chromosome aneuploidy in males. The phenotype of the disorder is usually only presented after maturation.

The most common symptoms of Kliene-felter syndrome are sterility, hypergonadism, mild mental impairment and enlargment of the breasts .