What Does Klinefelter Syndrome Cause?

What gender is an XXY chromosome?

Usually, a female baby has 2 X chromosomes (XX) and a male has 1 X and 1 Y (XY).

But in Klinefelter syndrome, a boy is born with an extra copy of the X chromosome (XXY).

The X chromosome is not a “female” chromosome and is present in everyone.

The presence of a Y chromosome denotes male sex..

What does a person with Klinefelter syndrome look like?

Longer legs, shorter torso and broader hips compared with other boys. Absent, delayed or incomplete puberty. After puberty, less muscle and less facial and body hair compared with other teens. Small, firm testicles.

What is the most common treatment for Klinefelter syndrome?

Treatment of Klinefelter Syndrome One common treatment is testosterone replacement therapy. It can start at puberty and can spur typical body changes, such as facial hair and a deeper voice. It can also help with penis size and stronger muscles and bones, but it won’t affect testicle size or fertility.

Does Klinefelter syndrome cause mental retardation?

Klinefelter syndrome (KS) has not typically been associated with mental retardation (MR), however, in recent years a growing body of evidence suggested that KS boys often experience language deficits and academic difficulties.

Are all Klinefelter’s infertile?

It is responsible for about 50% of all causes of infertility and thus carries significant medical, financial, and psychological implications for the couples struggling with conception. Klinefelter syndrome is the most common chromosomal male anomaly associated with male infertility.

Are there any support groups for Klinefelter syndrome?

The American Association for Klinefelter Syndrome Information and Support (AAKSIS) is a national volunteer association with the mission of education, support, research, and understanding of 47 XXY and its variants, collectively known as Klinefelter syndrome.

What is super male syndrome?

XYY syndrome is a rare chromosomal disorder that affects males. It is caused by the presence of an extra Y chromosome. Males normally have one X and one Y chromosome. However, individuals with this syndrome have one X and two Y chromosomes. Affected individuals are usually very tall.

What is the gender of YY?

Males with XYY syndrome have 47 chromosomes because of the extra Y chromosome. This condition is also sometimes called Jacob’s syndrome, XYY karyotype, or YY syndrome.

Can a girl have Klinefelter’s syndrome?

Klinefelter syndrome (47,XXY) results from an additional X chromosome on an XY background; therefore, this condition affects only males.

What age is Klinefelter syndrome diagnosed?

Diagnosis frequently occurs in adulthood; however about 75% of sex chromosome aneuploidies are never diagnosed. For suspected 47,XXY males, common indicators for karyotype analysis on peripheral blood are hypogonadism and infertility.

Who is affected by Klinefelter syndrome?

Frequency. Klinefelter syndrome affects about 1 in 650 newborn boys. It is among the most common sex chromosome disorders, which are conditions caused by changes in the number of sex chromosomes (the X chromosome and the Y chromosome).

Does Klinefelter syndrome run in families?

Klinefelter syndrome isn’t passed down through families like some genetic diseases. Instead, it happens randomly from an error in cell division when a parent’s reproductive cells are being formed.

How do you get tested for Klinefelter syndrome?

Blood or urine samples can reveal abnormal hormone levels that are a sign of Klinefelter syndrome. Chromosome analysis. Also called karyotype analysis, this test is used to confirm a diagnosis of Klinefelter syndrome. A blood sample is sent to the lab to check the shape and number of chromosomes.

CAN XXY have babies?

However, problems with their testicles prevent them from making enough normal sperm to father children. The vast majority of men with Klinefelter syndrome are infertile and can’t father a child the usual way. Options for becoming natural parents are limited, but fertility researchers are working on new treatments.

What is the life expectancy of a person with Klinefelter syndrome?

According to research, Klinefelter syndrome can shorten your life expectancy up to two years. However, you can still live a long, full life with this condition.

Who is most likely to get Klinefelter syndrome?

Klinefelter syndrome results when a boy is born with at least 1 extra X chromosome. This is written as XXY. Klinefelter syndrome occurs in about 1 out of 500 to 1,000 baby boys. Women who get pregnant after age 35 are slightly more likely to have a boy with this syndrome than younger women.

What is another name for Klinefelter syndrome?

Klinefelter syndrome (KS), also known as 47,XXY is a syndrome where a male has an additional copy of the X chromosome. The primary features are infertility and small poorly functioning testicles. Often, symptoms are subtle and subjects do not realize they are affected.