Poly-X Klinefelter syndrome
In very rare cases, males might have two or more extra X chromosomes in their cells, for instance XXXY or XXXXY, or an extra Y, such as XXYY. This is called poly-X Klinefelter syndrome, and it causes more severe
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Symptoms of Poly-X Klinefelter syndrome
Symptoms of Poly-X KS [11]
Males with poly-X Klinefelter syndrome have more than one extra X chromosome, so their symptoms might be more pronounced than in males with KS. In childhood, they may also have seizures, crossed eyes
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Causes List for Poly-X Klinefelter syndrome
Some possible causes of Poly-X Klinefelter syndrome or similar disorders may include:3
- Klinefelter Syndrome (Symptoms of Poly-X KS)
- 48,XXXY syndrome (XXXY syndrome)
- 49,XXXXY syndrome (XXXXY syndrome)
Types of Poly-X Klinefelter syndrome
- 48,XXYY
- 48,XXXY (or tetrasomy)
- 49,XXXXY (or pentasomy)
Source: NICHD (NIH)4
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Diagnosis
See also related information on diagnosis:
Treatments
See also the following treatment articles:
Causes
See also causal information:
Genetics
See also genetics of related diseases:
Similar Topic Articles
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References
- Source: NICHD (NIH): nichd.nih.gov/ health/ topics/ klinefelter/ conditioninfo/ Pages/ Default.aspx
- Source: NICHD (NIH): nichd.nih.gov/ health/ topics/ klinefelter/ conditioninfo/ Pages/ symptoms.aspx
- Source: Algorithmically Generated List
- Source: NICHD (NIH): nichd.nih.gov/ health/ topics/ klinefelter/ conditioninfo/ Pages/ symptoms.aspx
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