The most frequent reported symptoms in patients with duplication of 22q11.2 duplication syndrome are mental retardation/learning disabilility (97% of patients), delayed psychomotor development (67% of

22q11.2 distal deletion syndrome is a rare genetic condition caused by a tiny missing part of one of the body’s 46 chromosomes – chromosome 22. 22q11.2 distal deletion syndrome appears to be a recurrent