Peking University Dec 26 2024 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 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 Third Hospital revealed why Klinefelter syndrome, a common genetic condition affecting one in every 600 men, often leads to