Usually sporadic disorder resulting from de novo 22q11.2 deletion [MISCELLANEOUS] A contiguous gene syndrome involving deletion of the DiGeorge syndrome chromosome region (DGCR) involving mutations in TUP-like enhancer of split 1 (TUPLE1, 600237) and DiGeorge critical region gene 2 (DGCR2, 600594) [MOLECULAR BASIS] Incidence is estimated to be between 1 in 2,000 and 1 in 7,000 live births [MISCELLANEOUS] Hernia occurs in 22% of adults [MISCELLANEOUS] 22q11.2 deletion can present with a variety of phenotypes including velocardiofacial syndrome (192430) [MISCELLANEOUS]
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