What is the ratio of Klinefelter syndrome?

What is the ratio of Klinefelter syndrome?

Klinefelter syndrome, 47, XXY (KS) is the most common sex-chromosome disorder in males, affecting 150 per 100 000 males (1).

How many people currently have Klinefelter syndrome?

Approximately 1 in 500-600 males is born with an extra X chromosome. The prevalence rate is 5-20 times higher in males who are mentally challenged than in the general male population. Approximately 250,000 men in the United States have Klinefelter syndrome.

How common is Klinefelter?

Boys and men with Klinefelter syndrome are still genetically male, and often will not realise they have this extra chromosome, but occasionally it can cause problems that may require treatment. Klinefelter syndrome affects around 1 in every 660 males.

Is there a female version of Klinefelter syndrome?

Objective: Numerical abnormalities of sex chromosome, 47,XXY karyotype, have the clinical phenotype of Klinefelter syndrome. Very few 47,XXY cases with a female phenotype have been reported. The testicular feminization syndrome is a female phenotype with a male karyotype (46,XY).

Can people with Klinefelter syndrome build muscle?

This can help someone with Klinefelter syndrome develop bigger muscles, a deeper voice, growth of the penis, and facial and body hair. It also can help improve bone density and reduce any breast growth. However, testosterone therapy cannot increase testicle size or prevent or reverse infertility.

Can you be skinny with Klinefelter syndrome?

(23) in 1966 stated that 50% of their 50 Klinefelter’s syndrome patients were obese (but slim during their adolescence), the typical man with Klinefelter’s syndrome has always been described as tall and slim, with narrow shoulders and long arms and legs.

Which parent causes Klinefelter syndrome?

Klinefelter syndrome is not caused by anything the parents did or did not do. The disorder is a random error in cell division that happens when a parent’s reproductive cells are being formed.