Definition
DiGeorge syndrome is a primary immunodeficiency caused by a defect in chromosome 22, often resulting in T cell lymphopenia, congenital heart disease, hypocalcemia, and characteristic facies.
Introduction/Background
DiGeorge anomaly, also known as DiGeorge syndrome (DGS), or 22q11.2 deletion syndrome, arises from failure of differentiation and migration of neural crest cells into the third and fourth pharyngeal arches during early embryogenesis, resulting in hypoplasia or aplasia of the thymus and parathyroid glands as well as other structures that are derived from the pharyngeal arch system, including craniofacial structures, the aortic arch, and cardiac outflow tract (McDonald-McGinn et al. 2015). The syndrome, first described by Dr. Angelo DiGeorge in 1965, originally included infants with thymic aplasia and hypoparathyroidism. The definition was later expanded to include...
References
Abbas AK, Lichtman AH, Pillai S. Cellular and molecular immunology. 8th ed. Philadelphia: Elsevier Saunders; 2015. viii, 535 pages.
Adkinson NF, Middleton E. Middleton’s allergy: principles and practice. 8th ed. Philadelphia: Elsevier/Saunders; 2014. 2 volumes (xxvii, 1690, I–74 pages).
Kobrynski LJ, Sullivan KE. Velocardiofacial syndrome, DiGeorge syndrome: the chromosome 22q11.2 deletion syndromes. Lancet. 2007;370(9596):1443–52.
McDonald-McGinn DM, Emanuel BS, Zackai EH. 22q11.2 deletion syndrome. In: Adam MP, Ardinger HH, Pagon RA, Wallace SE, Bean LJH, Stephens K, et al., editors. GeneReviews((R)). Seattle: University of Washington; 1993. https://www.ncbi.nlm.nih.gov/books/NBK1523/
McDonald-McGinn DM, Sullivan KE, Marino B, Philip N, Swillen A, Vorstman JA, et al. 22q11.2 deletion syndrome. Nat Rev Dis Primers. 2015;1:15071.
Pai S, Notarangelo L. In: Hoffman R, Benz E, Silberstein L, Heslop H, Weitz J, Anastasi J, editors. Hematology: basic principles and practice. 7th ed. Philadelphia: Elsevier; 2018. p. 710–23.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Section Editor information
Rights and permissions
Copyright information
© 2019 Springer Science+Business Media, LLC, part of Springer Nature
About this entry
Cite this entry
Joychan, S., Sriaroon, P. (2019). DiGeorge Anomaly (del22q11). In: MacKay, I., Rose, N. (eds) Encyclopedia of Medical Immunology. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-9209-2_174-1
Download citation
DOI: https://doi.org/10.1007/978-1-4614-9209-2_174-1
Received:
Accepted:
Published:
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4614-9209-2
Online ISBN: 978-1-4614-9209-2
eBook Packages: Springer Reference MedicineReference Module Medicine