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Diseases

Genetic and Rare Diseases Information Center (GARD)

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48,XXYY syndrome


Other Names for this Disease

  • 48,XXYY Klinefelter syndrome
  • 48,XXYY variant of Klinefelter's syndrome
  • XXYY syndrome
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Your Questions Answered


1 question(s) from the public on this disease have been answered. Submit a new question.
  • We just found out that our grandson has 48,XXYY syndrome. We have an appointment with genetic doctors in a couple of weeks.  I was wondering if you could give us some information on what to expect and the prognosis for this and what we have to look forward to with him.   
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Other Names for this Disease
  • 48,XXYY Klinefelter syndrome
  • 48,XXYY variant of Klinefelter's syndrome
  • XXYY syndrome
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.