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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 ]
This syndrome is referred as "cat eye" due to the eye appearance of reported affected individuals who have coloboma of the iris, but this feature is only seen in about half of the cases. Mosaic trisomy 22 [ 7 ] is a disorder in which an extra chromosome 22 is found only in some cells of the body.
Cardiospondylocarpofacial syndrome is a very rare genetic disorder which is characterized by cardiac, digital, osseous anomalies with facial dysmorphisms. Cardiospondylocarpofacial syndrome is believed to be caused by autosomal dominant mutations of the MAP3K7 gene.
This page was last edited on 22 June 2018, at 14:43 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
22q11.2 deletion/duplication (velocardiofacial/DiGeorge syndrome), 1q21.1 deletion/duplication, 8p23.1 deletion/duplication, 15q11.2 deletion (Burnside-Butler syndrome) Array comparative genomic hybridization (also known as chromosomal microarray analysis)
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.
Mutations in coding or non-coding IRF6 exons can result in Van der Woude syndrome. [2] Due to the wide range of expressivity, it is also believed that other unidentified loci contribute to disease development. [4] An example of the clear phenotypic variability is a monozygotic twin study conducted by Jobling et al. (2010).
This is especially true for Healthy life expectancy, the definition of which criteria may change over time, even within a country. For example, Canada is a country with a fairly high overall life expectancy at 81.63 years; however, this number decreases to 75.5 years for Indigenous people in the country. [4]