Males with Klinefelter syndrome, who have an extra X chromosome, will also undergo X inactivation to have only one completely active X chromosome.
22.
For example, the sex chromosomes ( X and Y ) may exist in atypical combinations ( as in Klinefelter syndrome [ XXY ] ).
23.
At least one study indicates that planned and timed support should be provided for young men with Klinefelter syndrome to ameliorate current poor psychosocial outcomes.
24.
A female with only one X chromosome has Turner syndrome, an additional X chromosome in a male, resulting in 47 total chromosomes, has Klinefelter Syndrome.
25.
A 2002 literature review of elective abortion rates found that approximately 58 % of pregnancies in the United States with a diagnosis of Klinefelter syndrome were terminated.
26.
Klinefelter syndrome ), some cases of cryptorchidism or Sertoli cell-only syndrome as well as acquired conditions by infection ( orchitis ), surgery ( trauma, cancer ), radiation,
27.
For example, men with Klinefelter syndrome ( 47, XXY karyotype ) have a single Barr body, whereas women with a 47, XXX karyotype have two Barr bodies.
28.
A karyotype may be performed to rule out Klinefelter syndrome and Turner syndrome, although the hormones levels would also rule out both these relatively common reasons for hypogonadism.
29.
In fact, Ray, now 19 and living in a therapeutic setting, was also a special-needs child, afflicted with an extra X chromosome, a condition known as Klinefelter syndrome.
30.
Those affected with Klinefelter syndrome often do not show highly-visible symptoms and are not aware of their condition, unless diagnosed later in life ( usually due to infertility ).
