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DiGeorge syndrome, also known as 22q11.2 deletion syndrome, is a syndrome caused by a microdeletion on the long arm of chromosome 22. [7] While the symptoms can vary, they often include congenital heart problems , specific facial features, frequent infections, developmental disability , intellectual disability and cleft palate . [ 7 ]
Alright as a quick recap, DiGeorge syndrome or 22q11.2 deletion syndrome, is a genetic condition where the q11.2 portion of DNA on chromosome 22 is deleted, which can cause developmental issues like thymic and parathyroid hypoplasia, congenital heart defects, facial abnormalities, mental health conditions, and others.
22q11.2 distal deletion syndrome is a rare genetic condition caused by a tiny missing part of one of the body's 46 chromosomes – chromosome 22. 22q11.2 distal deletion syndrome appears to be a recurrent genomic disorder distinct from 22q11.2 deletion syndrome also known as DiGeorge syndrome (DGS; 188400) and velocardiofacial syndrome (VCFS; 192430).
22q11.2 deletion syndrome: Most people with 22q11.2 deletion syndrome are missing about 3 million base pairs on one copy of chromosome 22 in each cell. The deletion occurs near the middle of the chromosome at a location designated as q11.2. This region contains about 30 genes, but many of these genes have not been well characterized.
A microdeletion syndrome is a syndrome caused by a chromosomal deletion smaller than 5 million base pairs (5 Mb) spanning several genes that is too small to be detected by conventional cytogenetic methods or high resolution karyotyping (2–5 Mb). [1] [2] Detection is done by fluorescence in situ hybridization (FISH).
22q11.2 distal deletion syndrome; 22q11.2 duplication syndrome; 22q13 deletion syndrome; 2p15-16.1 microdeletion syndrome; 2q37 deletion syndrome; 3-M syndrome; 3C ...
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There is a 1.5-3.0 Mb deletion containing around 30-40 genes, spanning this region that causes the most survivable genetic deletion disorder known as 22q11.2 deletion syndrome, which is most commonly known as DiGeorge syndrome or Velocaridofacial syndrome. [12] [13] 22q11.2 deletion syndrome has a vast array of phenotypes and is not attributed ...