Over 90% of patients with DiGeorge syndrome (DGS) or velocardiofacial syndrome (VCFS) have a microdeletion at 22q11.2. Given that these deletions are difficult to visualize at the light microscopic level, fluorescence in situ hybridization (FISH) has been instrumental in the diagnosis of this disord
Routine diagnosis of DiGeorge syndrome by fluorescent in situ hybridization
โ Scribed by C. Desmaze; P. Scambler; M. Prieur; S. Halford; D. Sidi; F. Deist; A. Aurias
- Book ID
- 104661731
- Publisher
- Springer
- Year
- 1993
- Tongue
- English
- Weight
- 410 KB
- Volume
- 90
- Category
- Article
- ISSN
- 0340-6717
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โฆ Synopsis
In a series of ten patients affected by DiGeorge syndrome, we screened, by high resolution banding and fluorescent in situ hybridization of a cosmid probe, for microdeletions associated with this syndrome. In the ten patients, a microdeletion was demonstrated by in situ hybridization, but suspected only in two patients by high resolution banding.
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We report on our findings of 4 patients with mosaicism for a deletion of chromosome 15, most commonly associated with Prader-Willi syndrome (PWS). We examined a series of typical and atypical PWS patients in order to identify cytogenetically undetected deletions, using fluorescence in situ hybridiza