How does an extra X chromosome lead to infertility in men? Professor Qiao Jie and her team at Peking University Third Hospital revealed why Klinefelter syndrome, a common genetic condition affecting ...

Imagine the deep frustration of countless men who long to become fathers, only to face infertility due to a genetic condition they can't control. For those with Klinefelter syndrome, this painful ...

Researchers at the University of Colorado Anschutz Medical Campus and collaborators across the country have conducted the largest and most diverse study of men with extra X or Y chromosomes in the US ...

People who have one of several well-documented medical conditions do not have only XX or XY chromosomes, which typically correspond with female and male sexes, respectively. Those conditions include ...

Extra X chromosomes significantly increase the risk for systemic lupus erythematosus (SLE) and Sjögren disease, with the prevalence of these conditions being higher among patients with Klinefelter and ...