Around 1 in 500 men carry an extra X or Y chromosome, according to a large study published this week in Genetics in Medicine. But most of those affected are unaware of their status, despite it ...

Only a small minority of these men had a diagnosis of sex chromosome abnormality on their medical records or by self-report: fewer than one in four (23%) men with XXY and only one of the 143 XYY men ...

Researchers at the Johns Hopkins Kimmel Cancer Center and its Ludwig Center uncovered new evidence that extra copies of a ...

The spectrum of information that can be obtained by prenatal testing is wide and rapidly increasing. Many mutations, or "abnormalities," are inconsequential, while others are significant. Genetic ...

JA Rosenfeld is an employee of Signature Genomic Laboratories, a subsidiary of PerkinElmer, Inc. The authors have no other relevant affiliations or financial involvement with any organization or ...

A microscopic piece of genetic material known as the Y chromosome made headlines last week. It is nothing new or rare; every man has one in practically every cell, or he would not be a man. But a few ...

Each human cell contains 23 pairs of chromosomes that carry DNA within their nucleus. The X and Y chromosomes, commonly referred to as the sex chromosomes, are one such pair. They determine the ...

Around one in 500 men could be carrying an extra X or Y chromosome -- most of them unaware -- putting them at increased risk of diseases such as type 2 diabetes, atherosclerosis and thrombosis, say ...