Trisomy 22 | |
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Chromosome 22 | |
Specialty | Medical genetics |
Trisomy 22 is a chromosomal disorder in which three copies of chromosome 22 are present rather than two. It is a frequent cause of spontaneous abortion during the first trimester of pregnancy. Progression to the second trimester and live births are rare. This disorder is found in individuals with an extra copy or a variation of chromosome 22 in some or all cells of their bodies.
Many kinds of disorders are associated with trisomy 22: