| The association of a broad clinical spectrum and a duplication of the region that is deleted in patients with DiGeorge or velocardiofacial, establishing a complementary duplication syndrome. The clinical presentation of patients is extremely variable and shares features with 22q11.2 deletion syndromes including heart defects, urogenital abnormalities, velopharyngeal insufficiency with or without cleft palate, and ranging from multiple defects to mild learning difficulties with some individuals being essentially normal. |
