Clinical utility gene card for: DiGeorge syndrome, velocardiofacial syndrome, Shprintzen syndrome, chromosome 22q11.2 deletion syndrome (22q11.2, TBX1)

Chromosome 22q11.2 deletion syndrome (DiGeorge syndrome/velocardiofacial syndrome).

Chromosome 22q11.2 deletion syndrome is a common syndrome also known as DiGeorge syndrome and velocardiofacial syndrome. It occurs in approximately 1:4000 births, and the incidence is increasing due to affected parents bearing their own affected children. The manifestations of this syndrome cross all medical specialties, and care of the children and adults can be complex. Many patients have a m...

Safety of Live Viral Vaccines in Patients With Chromosome 22q11.2 Deletion Syndrome (DiGeorge Syndrome/Velocardiofacial Syndrome)

The package inserts of live viral vaccines include immunodeficiency as a contraindication. Nevertheless, patients with mild forms of immunodeficiency may benefit from vaccination. No published guidelines exist for the administration of these vaccines specifically to patients with chromosome 22q11.2 deletion syndrome. This syndrome is also sometimes called DiGeorge syndrome and is associated wit...

Chromosome 22q11.2 deletion syndrome (DiGeorge and velocardiofacial syndromes).

Chromosome 22q11.2 deletion syndrome occurs in approximately 1 of 3000 children. Clinicians have defined the phenotypic features associated with the syndrome and the past 5 years have seen significant progress in determining the frequency of the deletion in specific populations. As a result, caregivers now have a better appreciation of which patients are at risk for having the deletion. Once id...

Williams syndrome cognitive profile also characterizes Velocardiofacial/DiGeorge syndrome.

22q11.2 distal deletion: a recurrent genomic disorder distinct from DiGeorge syndrome and velocardiofacial syndrome.

Microdeletions within chromosome 22q11.2 cause a variable phenotype, including DiGeorge syndrome (DGS) and velocardiofacial syndrome (VCFS). About 97% of patients with DGS/VCFS have either a common recurrent approximately 3 Mb deletion or a smaller, less common, approximately 1.5 Mb nested deletion. Both deletions apparently occur as a result of homologous recombination between nonallelic flank...