One in every 500 men is born with an extra X chromosome, with a karyotype of 47, XXY rather than the typical 46, XY male karyotype.  This is known as Klinefelter Syndrome and is the most common genetic variation which impacts a man’s fertility.  Men with pure Klinefelter Syndrome are nearly universally azoospermic with a … Continue reading Men with Klinefelter Syndrome Can Still Be Fathers Using Own Sperm Through MicroTESE