This syndrome, evenly distributed in all ethnic groups, has a prevalence of four subjects per every 10,000 males in the general population. However, it is estimated that only 25% of the individuals with<unk>  are diagnosed throughout their lives. The rate of<unk>  among infertile males is 3.1%. The syndrome is also the main cause of male hypogonadism.
Klinefelter syndrome
XYY syndrome
Kallmann syndrome
Turner syndrome
Wilson–Turner syndrome
Angelman syndrome
Parsonage–Turner syndrome
XYYYY syndrome