This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Pathology
All of the following are seen in 22q 11.2 deletion syndrome except 
Select and explain. 
A. B cell immunodeficiency, B. Learning disabilities, C. Increased incidence of psychiatric disorders like schizophrenia in adulthood, D. Facial abnormalities
B: Learning disabilities
Answer: B: Learning disabilities 
Explanation: (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 DiGeorge's syndrome, with the chromosomal abnormality is found on the 22 chromosome: Cardiac Abnormality (especially tetralogy of Fallot) Abnormal facies Thymic aplasia Cleft palate Hypocalcemia/Hypoparathyroidism.