The oldest clinical case of Klinefelter Syndrome has been detected in a 1,000-year-old Portuguese skeleton. Klinefelter Syndrome is a super rare genetic but non-hereditary condition that gives men an extra X chromosome.
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The oldest clinical case of Klinefelter Syndrome has been detected in a 1,000-year-old Portuguese skeleton. Klinefelter Syndrome is a super rare genetic but non-hereditary condition that gives men an extra X chromosome.