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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 ]
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).
These disorders include DiGeorge syndrome, velocardiofacial syndrome, conotruncal anomaly face syndrome, and some familial or sporadic conotruncal cardiac defects which have been associated with microdeletion of 22q11.2.
This condition is identified when a band in the q11.2 section of the arm of chromosome 22 is missing or deleted. This condition has several different names: 22q11.2 deletion syndrome, velocardiofacial syndrome, DiGeorge syndrome, conotruncal anomaly face syndrome, Opitz G/BBB syndrome, and Cayler cardiofacial syndrome.
The DGCR2 gene encodes the protein integral membrane protein DGCR2/IDD in humans. [5] [6] [7]Deletions of the 22q11.2 have been associated with a wide range of developmental defects (notably DiGeorge syndrome, velocardiofacial syndrome, conotruncal anomaly face syndrome and isolated conotruncal cardiac defects) classified under the acronym CATCH 22.
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.
Conditions like diverticulitis, constipation, irritable bowel syndrome (IBS), or food intolerances are frequent culprits, says Dr. Boxer.
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 ...