Klinefelter syndrome is a genetic condition in which a boy is born with an extra X chromosome. Instead of the typical XY chromosomes in men, they have XXY, so this condition is also called XXY ...

Klinefelter syndrome is the most common sex-chromosome disorder; it affects approximately one in every 660 men. This syndrome is characterized by the presence of one or more extra X chromosomes ...

Men with Klinefelter's syndrome have an extra X chromosome, meaning their genetic makeup is “47, XXY” instead of the usual “46, XY.” They usually lose large amounts of key reproductive ...

Those conditions include Klinefelter Syndrome (XXY), Turner Syndrome (missing ... cases in which someone’s anatomy does not neatly fit into male or female. We often hear the expression that ...

Over half of men with Klinefelter syndrome (KS) are unaware of their condition. Among those diagnosed, only around half receive the necessary treatment. A recent Danish study shows that ...

Some rare congenital disorders cause very small testicles. One such disorder is Klinefelter syndrome. Klinefelter syndrome causes a male to have two or more X chromosomes instead of only one.

SMALL testes and aspermia are both characteristic features of Klinefelter's syndrome, and histological examination of the testes usually shows a lack of active spermatogenesis. Biopsies on testes ...

Professor Qiao Jie and her team at Peking University Third Hospital revealed why Klinefelter syndrome, a common genetic condition affecting one in every 600 men, often leads to infertility—and ...

For those with Klinefelter syndrome, this painful reality is a constant struggle. How does an extra X chromosome lead to infertility in men? Professor Qiao Jie and her team at Peking University ...

Of the 113,748,373 patients identified, 1975 were men with Klinefelter syndrome and 1136 were women with triple X syndrome. “The extra X chromosomes in [Klinefelter syndrome] (47, XXY ...