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DiGeorge syndrome is a rare congenital disease associated with a deletion of chromosome 22q11.2, which is characterized by the occurrence of various anomalies, such as hypo/aplasia of the thymus and parathyroid glands, which leads to T-cell immunodeficiency and hypoparathyroidism; this syndrome is also characterized by congenital heart disease (tetralogy of Fallot), anomalies in the development of craniofacial structures are observed, in the form of non-fusion of the hard palate and upper lip (cleft palate and cleft lip).