Having Klinefelter Syndrome

tubesHaving Klinefelter Syndrome does not mean it is impossible to father children

A common concern for males with KS and their families is the ability to father children. Although subfertility is characteristic of KS and the majority of KS men do not have sperm in the ejaculate, there are exceptions as well as other techniques to help with fertility potential. Although small, firm testes are common among all KS men, up to 50% have normal testosterone concentrations. Men with the mosaic form of KS (having 46XY cells mixed with 47XXY cells) are occasionally fertile. KS men with low sperm counts in the semen may have the sperm used for assisted reproductive techniques (such as in vitro fertilization- IVF) by simply collecting the sperm through semen samples obtained by masturbation.