Oct 29, 2024 · Klinefelter syndrome occurs because of a random change in the egg or the sperm that causes a baby assigned male at birth to be born with an extra X sex chromosome.

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 9, 2023 · Klinefelter syndrome is a common genetic condition in which males have an additional X chromosome. Symptoms may include breast growth, infertility, osteoporosis and learning difficulties.

Dec 20, 2023 · The term “Klinefelter syndrome,” or KS, describes a set of features that can occur in a male who is born with an extra X chromosome in his cells. It is named after Dr. Henry Klinefelter, …

What is Klinefelter syndrome? Most men are born with a pair of XY chromosomes, while most females are born with pair of XX chromosomes. Klinefelter syndrome occurs when a male is born with an …

Jan 2, 2026 · Recognition and treatment of Klinefelter syndrome is important for prevention or treatment of its consequences, such as micropenis, learning disabilities, delayed puberty, infertility, and …

May 19, 2019 · Klinefelter syndrome is a condition that occurs in men as a result of an extra X chromosome. The most common symptom is infertility.

Dec 11, 2025 · Klinefelter syndrome is a genetic condition that affects only males. Here's what you should know about the causes, symptoms, and treatment options for the condition.

Klinefelter syndrome affects about 1 in 650 male newborns. It is the most common sex chromosome disorder, which is a group of conditions caused by changes in the number of sex chromosomes (the …

The American Association for Klinefelter Syndrome Information and Support (AAKSIS) is a national volunteer association with the mission of education, support, research, and understanding of 47,XXY …