Klinefelter syndrome (KS), also known as 47,XXY, is a chromosome anomaly where a male has an extra X chromosome. [10] The complications commonly include infertility and small, poorly functioning …

Oct 29, 2024 · Klinefelter syndrome may affect testicular growth. This results in smaller testicles, which can lead to making less of the hormone testosterone. The syndrome also may cause smaller muscle …

Mar 4, 2025 · XXY syndrome, also known as Klinefelter syndrome (KS), is a genetic condition characterized by the presence of an extra X chromosome (47, XXY). Humans have 22 pairs of …

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.

Oct 9, 2023 · Klinefelter syndrome is a common genetic condition in which males have an extra X chromosome. Find out about treatment.

Klinefelter syndrome is a chromosomal condition in boys and men that can affect physical and intellectual development. Explore symptoms, inheritance, genetics of this condition.

Overview of Klinefelter Syndrome, 47,XXY This booklet offers information for expectant parents first learning about Klinefelter syndrome or 47,XXY, which is a chromosome condition. Chromosomes are …

Klinefelter syndrome occurs when a male is born with an extra X chromosome. Thus a male with Klinefelter has XXY instead of the usual XY pair. Because males with this condition produce less of …

Frequently Asked Questions 47,XXY 47,XXY, also referred to as Klinefelter syndrome, is a common chromosomal disorder. Rather than the usual pattern of 46 chromosomes, with one X chromosome …

Jan 13, 2026 · XXY syndrome is a relatively common condition, and around 1 in 660 males tend to have it. A male fetus typically ends up having an XXY chromosome due to either the ova or the sperm …