What type of mutation causes XXY?

Klinefelter syndrome can be caused by: One extra copy of the X chromosome in each cell (XXY), the most common cause. An extra X chromosome in some of the cells (mosaic Klinefelter syndrome), with fewer symptoms. More than one extra copy of the X chromosome, which is rare and results in a severe form.

What is everyday life like with Klinefelter syndrome?

They may tend to be quiet, shy, and more reserved or sensitive than other guys. Some boys with Klinefelter syndrome are less interested in sports or physical activities. Since high-school life often revolves around schoolwork and sports, guys with Klinefelter may feel like they don’t fit in or lack self-confidence.

Is XXY syndrome a mutation?

Mosaic Klinefelter syndrome (46,XY/47,XXY) is also not inherited. It occurs as a random error during cell division early in fetal development. As a result, some of the body’s cells have the usual one X chromosome and one Y chromosome (46,XY), and other cells have an extra copy of the X chromosome (47,XXY).

Is Klinefelter syndrome An example of trisomy?

Autosomal trisomy can be associated with birth defects, intellectual disability and shortened life expectancy. Trisomy of sex chromosomes can also occur and include: XXX (Triple X syndrome) XXY (Klinefelter syndrome)

Does Klinefelter syndrome affect females?

Klinefelter syndrome affects males only; females cannot have it. Klinefelter syndrome results from a genetic abnormality in which males have an extra copy of the X chromosome.

What is a person with XXY chromosomes?

What Is Klinefelter Syndrome? Klinefelter syndrome is a genetic condition in which a boy is born with an extra X chromosome. Instead of the typical XY chromosomes in men, they have XXY, so this condition is sometimes called XXY syndrome.

Can people with Klinefelter syndrome get an erection?

Klinefelter’s syndrome is a condition that has a variable presentation. Despite having a higher likelihood of reduced sexual desire, patients may have normal erectile function comparable to age-matched individuals.

What are the signs and symptoms of chromosome 47 XXY?

Most often, women with 47, XXY are infertile, but in a few cases they have had children naturally. [4] [5] Some people with 47, XXY do not have any noticeable signs or symptoms (features) associated with the chromosome variation.

What are X and Y chromosomal variations?

FAMILY STORIES. X & Y Chromosomal Variations are a neurogenetic disorder referred to by many other names, including Sex Chromosome Disorders, X & Y Chromosomal Variations, Sex Chromosome Anomaly, and Sex Chromosome Aneuploidy Variations.

What are the chances of having a boy with XXY syndrome?

Older women have a slightly higher chance of having a boy with XXY syndrome, but the chance is small. Men with Klinefelter may have: Some men show symptoms of Klinefelter as children, but others don’t know they have it until puberty or adulthood. Many men never realize that they have it because symptoms aren’t always present.

What is Klinefelter syndrome (XXY)?

Males have an X and a Y (XY). But in rare cases, a male is born with an extra X chromosome (XXY). This is Klinefelter syndrome. It’s also called Klinefelter’s or XXY. Often, men don’t even know they have Klinefelter until they run into problems trying to have a child. There’s no cure, but it can be treated.