Those with XXY are more likely than others to have certain health problems, such as autoimmune disorders, breast cancer, venous thromboembolic disease, and osteoporosis.

Mar 4, 2025 · What is XXY syndrome? XXY syndrome, also known as Klinefelter syndrome (KS), is a genetic condition characterized by the presence of an extra X chromosome (47, XXY). …

Oct 29, 2024 · Klinefelter syndrome is a genetic condition that occurs before birth, but it often isn't diagnosed until adulthood. Klinefelter syndrome may affect testicular growth. This results in …

Klinefelter syndrome, also called 47,XXY, is a chromosomal condition that affects male development. The signs and symptoms of Klinefelter syndrome vary. In some cases, the …

Oct 28, 2024 · Klinefelter syndrome, also known as XXY syndrome, is a condition in boys and men that’s caused by an extra X chromosome. It can affect physical and mental development.

Dec 18, 2025 · A male fetus typically ends up having an XXY chromosome due to either the ova or the sperm containing an extra X chromosome. Statistically more probability of XXY …

Dec 4, 2025 · Normal females have two X chromosomes, and males have an X and a Y; abnormalities in sex chromosome distribution produce Turner’s syndrome (XO), Klinefelter’s …

Klinefelter syndrome is a sex chromosome abnormality in which boys are born with 2 X chromosomes, instead of 1, and 1 Y (XXY). Klinefelter syndrome occurs when a boy has 1 …

Oct 9, 2023 · What is Klinefelter syndrome? Klinefelter syndrome is a genetic disorder in which males have an additional X chromosome in their genetic code. Most males have 46 …

Rather than the usual pattern of 46 chromosomes, with one X chromosome and one Y chromosome, there is an additional X chromosome, resulting in a genetic signature of 47,XXY.