XXYY syndrome is a sex chromosome anomaly in which males have two extra chromosomes, one X and one Y chromosome. Human cells usually contain two sex chromosomes, one from the mother and one from the father. Usually, females have two X chromosomes (XX) and males have one X and one Y chromosome (XY).

Mar 24, 2022 · Learn about 48, XXYY Syndrome, including symptoms, causes, and treatments. If you or a loved one is affected by this condition, visit NORD to find resources.

XXYY syndrome occurs in approximately 1:18,000–1:40,000 males. Although the physical phenotype is similar to 47,XXY (tall stature, hypergonadotropic hypogonadism, and infertility), XXYY is associated with additional medical problems and more significant neurodevelopmental and psychological features.

48,XXYY syndrome is a chromosomal condition that causes infertility, developmental and behavioral disorders, and other health problems. Explore symptoms, inheritance, genetics of this condition.

48,XXYY syndrome is a chromosomal condition, characterized by the presence of an extra X and Y chromosome in males, that causes medical and behavioral problems. 48,XXYY can be considered a variant of Klinefelter syndrome.

Our vision is a world where men and boys with XXYY Syndrome lead purposeful, productive lives. Read more about our mission. What is XXYY Syndrome? In support of our mission, the XXYY …

Nov 14, 2023 · 48, XXYY syndrome is a rare genetic condition, sometimes called double Y syndrome. Males are commonly affected. It is distinguished by an additional X and Y …

48,XXYY is a rare condition typically due to a sporadic aneuploidy event with an estimated recurrence risk of <1% (may be higher for cases of advanced maternal age). Genetic counseling for this condition should include a review of the possible and highly variable physical, medical, developmental and psychological features of 48,XXYY.

XXYY Syndrome is the name attached to the cluster of symptoms that arise as a result of the 48,XXYY chromosome pattern. 48,XXYY is one of several types of sex chromosome variations, including those that are considered as variants of Klinefelter Syndrome, 47,XXY and XXXY, XXXXY, XY/XXY and another syndrome called XYY, all of which affect males.

Oct 28, 2024 · 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...