A newborn boy with complex congenital heart disease, unilateral renal agenesis, and hypocalcemia was found to have a submicroscopic deletion of 22q11.2 (DiGeorge anomaly). In evaluating the pathogenesis of the hypocalcemia, repeatedly elevated or normal levels of parathyroid hormone were found, cons
Velopharyngeal incompetence and chromosome 22q11 deletion
β Scribed by John G Boorman; Sanjay Varma; Caroline Mackie Ogilvie
- Book ID
- 117276575
- Publisher
- The Lancet
- Year
- 2001
- Tongue
- English
- Weight
- 48 KB
- Volume
- 357
- Category
- Article
- ISSN
- 0140-6736
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We read with interest the paper by Leana-Cox et al. [1996] which reported on 5 families with recurrent Di-George/velocardiofacial syndrome and deletions of chromosome 22q11 (del22q11), and which reviewed the pertinent literature. The authors observed that up to 25% of del22q11 are inherited. Particu
## Velo -cardio-facial syndrome, DiGeorge syndrome, conotruncal anomaly face syndrome, tetralogy of Fallot, and pulmonary atresia with ventricular septal defect are all associated with hemizygosity of 22q11. While the prevalence of the deletions in these phenotypes has been studied, the frequency