Testosterone treatment significantly reduces mortality among men with Klinefelter syndrome. Researcher calls for changes in ...

It happens in people assigned female at birth. XXY happens in people assigned male at birth, with a condition called Klinefelter syndrome. Is Turner syndrome tied to autism? People with Turner ...

Like Klinefelter Syndrome, Turner Syndrome is marked by an abnormal karyotype, 45,XO. While Turner women have female external genitals, the individuals lack properly formed ovaries. Without ...

Turner syndrome can also result in miscarriage or stillbirth. Klinefelter syndrome, also known as XXY syndrome, is the result of an extra X chromosome in people assigned male at birth. It is ...

Could science help prevent birth defects? This National Birth Defects Awareness Month, here's the breakthrough every couple needs to know!

Females might have an extra X chromosome. Females missing an X chromosome have Turner syndrome. People with Klinefelter syndrome have an extra X chromosome, those with Jacobs Syndrome have an extra Y.

In addition, sex chromosomal abnormalities like Turner syndrome and Klinefelter syndrome may have an effect on physical and reproductive development. While some defects are inherited, many are ...