About 24,300 results
Open links in new tab
  1. Klinefelter syndrome - Symptoms and causes - Mayo Clinic

    Oct 29, 2024 · Klinefelter syndrome is a common condition that results when a person assigned male at birth has an extra copy of the X sex chromosome instead of the typical XY.

  2. Klinefelter syndrome - Wikipedia

    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 …

  3. Klinefelter Syndrome: What It Is, Symptoms & Treatment

    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 …

  4. Johns Hopkins Klinefelter Syndrome Center

    Most males with Klinefelter syndrome, also called XXY males, have two X chromosomes instead of one. The extra X usually occurs in all body cells. Sometimes the extra X only occurs in …

  5. Klinefelter Syndrome (KS) - NICHD - Eunice Kennedy Shriver …

    Dec 20, 2023 · KS describes a set of physical, language, and social development symptoms in males who have an extra X chromosome. Its main feature is infertility. Outward signs of KS …

  6. What Is XXY Chromosome (Klinefelter Syndrome)? | Genetic Facts …

    Klinefelter Syndrome is a genetic condition caused by an extra X chromosome in males, leading to physical, developmental, and hormonal differences.

  7. Klinefelter Syndrome: Symptoms, Causes, Diagnosis, and Treatment - WebMD

    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.

  8. Klinefelter Syndrome: Symptoms, Genetics, and Treatment

    2 days ago · 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.

  9. Klinefelter Syndrome - Johns Hopkins Medicine

    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 …

  10. Klinefelter syndrome: MedlinePlus Genetics

    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 …