XXY Aneuploidies
What is XXY?:
What is XXY?
History
XXY or Ks?
Treatment
Treatment - Part 2
Sexuality & Fertility
XXY Aneuploidies
For Parents
Adolescence
In Conclusion
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Occasionally, variations of the XXY chromosome count may occur; the most common being the XY mosaic. In this variation, some of the cells are XXY and the rest are XY. The majority of these individuals have similar outcomes as those who are XXY and require the same treatment, though there are reports of a slightly increased likelihood of fertility.
A few instances of individuals having two or even three additional X or Y chromosomes (XXXY, XXXXY, XXYY, for example) have also been reported in the medical literature. Although research is even more sparse with respect to these numerous chromosomal variations, it is believed that these individuals may exhibit moderate to severe cognitive impairment, and information about the benefits of early intervention are less available. Though there is little hard research available, there is also no indication that treatment would be any different for those with these variations than for XXYs.
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