Klinefelter syndrome (KS), also known as 47,XXY, is a chromosome anomaly where a male has an extra X chromosome. [10] These complications commonly include infertility and small, poorly functioning testicles (if present).

除了正常的XX和XY，性染色体也有可能表现为XYY、XXY、XXX、X或XXYY等各种核型。 Turner综合征 （X） 少了条X染色体的女性，称为Turner综合征，核型为（45,XO）。 Turner综合征核型 X染色体缺失或异常，将会引起单倍剂量不足，导致性腺不发育。

2024年10月29日 · One extra copy of the X sex chromosome in each cell (XXY), the most common cause. An extra X sex chromosome in some of the cells. This is called mosaic Klinefelter syndrome and may result in fewer symptoms. More than one extra copy of the X sex chromosome, which is rare and results in a severe form of the syndrome.

2024年10月28日 · 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 also...

2025年3月4日 · XXY syndrome, also known as Klinefelter syndrome (KS), is a genetic condition characterized by the presence of an extra X chromosome (47, XXY). Humans have 22 pairs of numbered chromosomes and one pair of sex chromosomes, resulting in a …

Many boys with Klinefelter syndrome — also known as XXY syndrome — have no signs or symptoms, and some don't even know they have it until later in life. The XXY condition that causes Klinefelter syndrome can't be changed, but medical treatment and working with therapists can help a boy's development and lessen the condition's effects.

Klinefelter syndrome, also called 47,XXY, is a chromosomal condition that affects male development. The signs and symptoms of Klinefelter syndrome vary. In some cases, the features are so mild that the condition is not diagnosed until puberty or adulthood.

2025年1月7日 · 众所周知，xxy是克氏综合征，xyy是超雄综合征。 克氏综合征是卵细胞在减数分裂的过程中产生异常，超雄则恰恰相反。 那有没有可能存在一个同时患有克氏综合…

Klinefelter’s, 47,XXY, XXY, XXY syndrome, and KS are all different names for Klinefelter syndrome. Klinefelter syndrome is part of a bigger group of genetic conditions called sex chromosome aneuploidies (SCAs). The X and Y chromosomes are called sex chromosomes; individuals typically have two sex chromosomes.

47,XXY, also known as Klinefelter syndrome, is the name of something called a genetic condition. In Klinefelter syndrome, which is easier to say as “KS”, a boy has an extra “X message” in each cell of his body. XXY is common. One boy out of every 600 boys has XXY.