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All are now understood to be presentations of a single syndrome. ICD-10 2015 version mentions DiGeorge syndrome using two codes: D82.1 (Di George syndrome) [60] and Q93.81 (Velo-cardio-facial syndrome). [61] The ICD-11 Beta Draft discusses the syndrome under “LD50.P1 CATCH 22 phenotype". [61]
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).
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.
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.
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.
Survivable autosomal trisomies (chromosomes 13, 18, 21), chromosome X monosomy (Turner syndrome) Karyotyping: Copy number variants: 10–12% [22] 22q11.2 deletion/duplication (velocardiofacial/DiGeorge syndrome), 1q21.1 deletion/duplication, 8p23.1 deletion/duplication, 15q11.2 deletion (Burnside-Butler syndrome)
DiGeorge syndrome or velocardiofacial syndrome [3] – most common microdeletion syndrome; Prader–Willi syndrome [4] [5] Angelman syndrome [4] Neurofibromatosis type I [6] Neurofibromatosis type II [7] [8] Williams syndrome [9] Miller–Dieker syndrome [10] Smith–Magenis syndrome [11] Rubinstein–Taybi syndrome [12] Wolf–Hirschhorn ...
XLP syndrome X-linked lymphoproliferative syndrome (see Duncan Disease) XLSA X-linked sideroblastic anemia: XMEA X-linked myopathy with excessive autophagy: XMEN X-linked immunodeficiency with magnesium defect, Epstein-Barr virus infection and neoplasia XP Xeroderma pigmentosa: XSCID X-linked severe combined immunodeficiency: XXX syndrome ...