Klinefelter syndrome (KS), also known as 47,XXY, is a chromosome anomaly where a male has an extra X chromosome. As the presence of a Y chromosome denotes...

XXXY syndrome are similar to those of Klinefelter syndrome, though the symptoms are usually more severe in 48,XXXY syndrome. Like Klinefelter syndrome, the...

Fitch Klinefelter Jr. (/ˈklaɪnfɛltər/; March 20, 1912 – February 20, 1990) was an American rheumatologist and endocrinologist. Klinefelter syndrome is named...

signs of Klinefelter syndrome; however, chromosome testing revealed 48,XXYY instead of the 47, XXY arrangement known to cause Klinefelter syndrome. Because...

an extra Y chromosome. Klinefelter syndrome XXYY syndrome XYYY syndrome XYYYY syndrome Turner syndrome Trisomy X "47,XYY syndrome". Genetics Home Reference...

was coined Fraccaro syndrome after the researcher. The symptoms of 49,XXXXY are slightly similar to those of Klinefelter syndrome and 48,XXXY, but they...

approximately 1:20,000 newborn males, making it much less common than Klinefelter syndrome. Treatment is medically unnecessary, although some individuals choose...

Germany. The name may refer to: Harry Klinefelter (1912–1990), an American endocrinologist Klinefelter syndrome Kleinfeltersville, Pennsylvania Kleinfeld...

pentasomy X is unclear. More common aneuploidy syndromes, such as Down syndrome and Klinefelter's syndrome, have strong relationships with maternal age...

ascertained due to having physical traits of Klinefelter syndrome. By that time, three men with XXYY syndrome had been reported. 49,XXXYY was one of the...

common aneuploidies such as Down syndrome, the relationship with maternal age is extensively studied. In Klinefelter syndrome, the most common and most studied...

rates after prenatal diagnosis of Down syndrome, spina bifida, anencephaly, and Turner and Klinefelter syndromes: a systematic literature review. European...

chromosome monosomy (Turner syndrome, see above) can also be classified as a form of sex chromosome aneuploidy. Klinefelter syndrome is the most common sex...

currently unknown, as no mutations in the Xist promoter were detected. Klinefelter 47,XXY and 48,XXYY patients were found to have significantly skewed X-chromosome...

with both AIS and certain diagnoses listed here, such as Klinefelter syndrome or Turner syndrome with mosaicism. Depending on the form of AIS suspected...

conditions such as late onset congenital adrenal hyperplasia and Klinefelter syndrome which most clinicians do not recognize as intersex; Sax states, "if...

with Klinefelter syndrome (who have XXY chromosomes), Swyer syndrome (women with XY chromosomes), and XX male syndrome (de la Chapelle syndrome, men with...

stature in Turner syndrome and its counterpoint, tall stature in sex chromosome polysomy conditions such as Klinefelter syndrome, XYY syndrome, and trisomy...

as well as in the human testis (in healthy patients). Klinefelter syndrome: Klinefelter syndrome is caused by the presence of one or more extra copies...

Male calicoes can happen when a male cat has two X chromosomes (Klinefelter syndrome, with XXY sex chromosomes and generally they are sterile); the condition...

diagnosed in girls and in boys with two X chromosomes (Klinefelter syndrome). Those with Aicardi syndrome are in need of various specialist and habilitation...

known causes of infertility is Klinefelter syndrome, which affects one in 500–1000 newborn males. Klinefelter syndrome is a chromosomal defect that occurs...

an underlying cause of SCO syndrome, such as Klinefelter syndrome, may produce other symptoms. Most cases of SCO syndrome are idiopathic, however, causes...

conditions and distinguishes them from other conditions such as Klinefelter syndrome or Turner syndrome which share some similar symptoms but have a different...

trisomy X and Turner syndrome in Denmark Violin plots of age at diagnosis for Klinefelter syndrome, trisomy X, and XYY syndrome The first known case of...

alcohol syndrome. A flat nasal bridge can be a sign of Down syndrome (Trisomy 21), Fragile X syndrome, 48,XXXY variant Klinefelter syndrome, or Bartarlla-Scott...

drugs can also cause breast enlargement. Other causes may include Klinefelter syndrome, metabolic dysfunction, or a natural decline in testosterone production...

defect is inherent within the gonad: e.g. Noonan syndrome, Turner syndrome (45X,0), Klinefelter syndrome (47XXY), XY with SRY gene-immunity Secondary -...

include: · 45,X (Turner syndrome): · 47,XXX (Triple X syndrome; Trisomy X) · 47,XXY (Klinefelter syndrome) · 47,XYY (Jacob syndrome) · 48,XXXY · 48,XXYY...

include chromosomal disorders such as Down syndrome, Klinefelter syndrome, XYY syndrome and fragile X syndrome. Acquired causes of tics include drug-induced...