Search results
Results from the WOW.Com Content Network
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]
XYY syndrome, also known as Jacobs syndrome, is an aneuploid genetic condition in which a male has an extra Y chromosome. [1] There are usually few symptoms. [ 2 ] These may include being taller than average and an increased risk of learning disabilities .
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.
The autoimmune disease ... suggests a life expectancy ... In 2022 Trisomy X was included alongside XYY at the 3rd International Workshop on Klinefelter Syndrome, ...
XXX (Triple X syndrome) XXY (Klinefelter syndrome) XYY (Jacobs syndrome) Compared to trisomy of the autosomal chromosomes, trisomy of the sex chromosomes normally has less severe consequences. Individuals may show few or no symptoms and have a normal life expectancy. [4]
Klinefelter syndrome: X C Neurofibromatosis: 17q/22q/? Phenylketonuria: 12q P Polycystic kidney disease: 16 or 4 P Prader–Willi syndrome: 15q DCP Scheuermann's disease: 1q21-q22 or 7q22 Sickle cell disease: 11p P Spinal muscular atrophy: 5q DP Tay–Sachs disease: 15q P Turner syndrome: X C
"Angelman syndrome shares symptoms and characteristics with other disorders including autism, cerebral palsy and Prader-Willi syndrome," read the Angelman Syndrome Foundation website. "People with ...
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.