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Klinefelter syndrome is not an inherited condition. The extra X chromosome comes from the mother in approximately 50% of the cases. Maternal age is the only known risk factor. Women at 40 years have a four-times-higher risk of a child with Klinefelter syndrome than women aged 24 years. [14] [34] [35]
There is no cure for Marfan syndrome, but life expectancy has increased significantly over the last few decades [when?] and is now similar to that of the average person. [63] Regular checkups are recommended to monitor the health of the heart valves and the aorta. Marfan syndrome is treated by addressing each issue as it arises and, in ...
It can be considered a form or variant of Klinefelter syndrome (47,XXY). [11] Individuals with this syndrome are typically mosaic, being 49,XXXXY/48, XXXX. [4] It is genetic but not hereditary, meaning that while the genes of the parents cause the syndrome, there is a small chance of more than one child having the syndrome.
Tetrasomy X, also known as 48,XXXX, is a chromosomal disorder in which a female has four, rather than two, copies of the X chromosome.It is associated with intellectual disability of varying severity, characteristic "coarse" facial features, heart defects, and skeletal anomalies such as increased height, clinodactyly (incurved pinky fingers), and radioulnar synostosis (fusion of the long bones ...
Trisomy X, also known as triple X syndrome and characterized by the karyotype [note 1] 47,XXX, is a chromosome disorder in which a female has an extra copy of the X chromosome.
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48,XXYY syndrome is a condition related to the X and Y chromosomes (the sex chromosomes). People normally have 46 chromosomes in each cell.Two of the 46 chromosomes, known as X and Y, are called sex chromosomes because they help determine whether a person will develop male or female sex characteristics.
Ágnes Keleti, the oldest living Olympic medalist and Holocaust survivor died in Budapest, Hungary on Thursday.