22q11.2 duplication syndrome

22q11.2 duplication syndrome is a rare genetic disorder caused by a duplication of a segment at the centromeric end of the long arm of chromosome 22. == Presentation == The most frequent reported symptoms in patients with 22q11.2 duplication syndrome are intellectual disability/learning disability (97% of patients), delayed psychomotor development (67% of patients), growth retardation (63% of patients) and muscular hypotonia (43% of patients).

Source: Wikipedia — 22q11.2 duplication syndrome (CC BY-SA 4.0)