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What is Klinefelter syndrome?
Quick Answer
Klinefelter syndrome is a sex chromosome condition in which a male has an extra X chromosome, most commonly 47,XXY. It can affect puberty, fertility and hormone levels.
The Full Story
Klinefelter syndrome happens when a person assigned male at birth has at least one extra X chromosome, most often resulting in 47,XXY. It is one of the most common sex chromosome variations, but many cases are never diagnosed. Symptoms can include reduced testosterone production, smaller testes, infertility and taller-than-average height. Treatment may include testosterone therapy and support for learning or fertility issues.
Key Facts
1.The most common karyotype is 47,XXY
2.It affects males
3.Infertility is common
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Suggested video title for this topic:
"The extra chromosome that changes puberty and fertility"
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