Klinefelter syndrome (KS), also known as 47,XXY, is a chromosome anomaly where a male has an extra X chromosome. These complications commonly include infertility...

XXXY syndrome are similar to those of Klinefelter syndrome, though the symptoms are usually more severe in 48,XXXY syndrome. Like Klinefelter syndrome, the...

variable. This syndrome is diagnosed and occurs in approximately 1:20,000 new-born males, making it much less common than Klinefelter syndrome. Medical treatment...

chromosome anomalies Klinefelter syndrome XXYY syndrome XYYY syndrome XYYYY syndrome Turner syndrome Trisomy X "47,XYY syndrome". Genetics Home Reference...

was coined Fraccaro syndrome after the researcher. The symptoms of 49,XXXXY are slightly similar to those of Klinefelter syndrome and 48,XXXY, but they...

signs of Klinefelter syndrome; however, chromosome testing revealed 48,XXYY instead of the 47, XXY arrangement known to cause Klinefelter syndrome. Because...

Fitch Klinefelter Jr. (/ˈklaɪnfɛltər/; March 20, 1912 – February 20, 1990) was an American rheumatologist and endocrinologist. Klinefelter syndrome is named...

common aneuploidies such as Down syndrome, the relationship with maternal age is extensively studied. In Klinefelter syndrome, the most common and most studied...

pentasomy X is unclear. More common aneuploidy syndromes, such as Down syndrome and Klinefelter's syndrome, have strong relationships with maternal age...

trisomy X and Turner syndrome in Denmark Violin plots of age at diagnosis for Klinefelter syndrome, trisomy X, and XYY syndrome The first known case of...