<prompt> All of the following are seen in 22q 11.2 deletion syndrome exceptB cell immunodeficiencyLearning disabilitiesIncreased incidence of psychiatric disorders like schizophrenia in adulthoodFacial abnormalities  <response>: A B cell immunodeficiency DiGeorge syndrome or 22q11.2 deletion syndrome, which has several presentations including DiGeorge syndrome DGS, DiGeorge anomaly, velo-cardio-facial syndrome, Shprintzen syndrome, conotruncal anomaly face syndrome, Strong syndrome, congenital thymic aplasia, and thymic hypoplasia, is a syndrome caused by the deletion of a small piece of chromosome 22. Salient features Mnemonic CATCH-22 of DiGeorges syndrome, with the chromosomal abnormality is found on the 22 chromosome: Cardiac Abnormality especially tetralogy of Fallot Abnormal facies Thymic aplasia Cleft palate HypocalcemiaHypoparathyroidism. 