- Chromosome 22 Central
 - Information and support group devoted to the many disorders involving chromosome 22, such as Trisomy 22, Cat Eye Syndrome, VeloCardioFacial Syndrome, DiGeorge Syndrome, and Ring 22. - Wikipedia: Aneuploidy
- Article about aneuploidy, a condition in which the number of chromosomes is abnormal due to extra or missing chromosomes.
- Wikipedia: Klinefelter's Syndrome
- User-submitted article about Klinefelter's Syndrome 47XXY or XXY Syndrome.
- Wikipedia: Triple X Syndrome
- User-generated article about Triple X Syndrome, a form of chromosomal variation characterized by the presence of an extra X chromosome in each cell of a human female.
- Wikipedia: Warkany Syndrome 2
- Article about Warkany Syndrome 2, also known as Trisomy 8, is a chromosomal defect that has severe effects on the fetus.
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