21. Clinical characteristics and investigations of children with DiGeorge syndrome
Main Article Content
Abstract
DiGeorge syndrome (DGS), also known as 22q11.2 deletion syndrome, is a common genetic disorder, with diverse clinical manifestations with the classic triads of congenital heart disease, hypocalcemia due to hypoparathyroidism and immunodeficiency due to thymic abnormalities. A retrospective descriptive study of 144 patients diagnosed with Digeorge syndrome by FISH at Vietnam National Children's Hospital from January 2016 to July 2022 showed a median age of diagnosis was 3 months (0 - 14 years old). Male/Female = 1/1. Main Congenital anomalies detected were congenital heart diseases (95.8%), facial abnormalities (31.3%), congenital anomalies of the nervous system (27.7%) and genitourinary abnormalities (18.3%). Other common clinical manifestations included infections (77.1%), seizures (23.6%), growth retardation (50.7%) and developmental disorders (21.5%). The rate of hypocalcaemia was 50%. Hypoparathyroidism occured in 18/33 patients and was a common cause of hypocalcemia. Hematologic disorders included anemia, lymphopenia, and thrombocytopenia. Immunodeficiency was seen in 86.5% of patients.
Article Details
Keywords
DiGeorge syndrome (DGS), congenital heart disease, hypoparathyroidism, hypocalcaemia, immunodeficiency, 22q11.2 deletion
References
2. McDonald-McGinn DM, Hain HS, Emanuel BS, Zackai EH. 22q11.2 Deletion Syndrome Summary Genetic Counseling GeneReview Scope Diagnosis Suggestive Findings. 2020. https://www.ncbi.nlm.nih.gov/books/NBK1523/.
3. Campbell IM, Sheppard SE, Crowley TB, et al. What’s New with 22q? An update from the 22q and You Center at the Children’s Hospital of Philadelphia. Am J Med Genet A. 2018;176(10):2058-2069. doi: 10.1002/ajmg.a.40637.
4. Digilio M, Marino B, Capolino R, Dallapiccola B. Clinical manifestations of Deletion 22q11.2 syndrome (DiGeorge/Velo-Cardio-Facial syndrome). Images Paediatr Cardiol. 2005;7(2):23-34.
5. Lê Thị Liễu, Đinh Thị Hồng Nhung, Ngô Diễm Ngọc. Kỹ thuật lai huỳnh quang tại chỗ (FISH) trong chẩn đoán hội chứng DiGeorge. Tạp chí Nhi khoa. 2016;9(3):71-75.
6. Lê Thanh Hải. Hướng Dẫn Chẩn Đoán và Điều Trị Bệnh Trẻ Em (Cập Nhật 2018). Nhà xuất bản Y học; 2018. https://benhviennhitrunguong.gov.vn/huong-dan-chan-doan-va-dieu-tri-benh-tre-em-2.html.
7. Park IS, Ko JK, Kim YH, et al. Cardiovascular anomalies in patients with chromosome 22q11.2 deletion: A Korean multicenter study. International Journal of Cardiology. 2007;114(2):230-235. doi: 10.1016/j.ijcard.2005.12.029.
8. Repetto GM, Guzmán ML, Delgado I, et al. Case fatality rate and associated factors in patients with 22q11 microdeletion syndrome: A retrospective cohort study. BMJ Open. 2014;4(11):e005041. doi: 10.1136/bmjopen-2014-005041.
9. Nissan E, Katz U, Levy-Shraga Y, et al. Clinical Features in a Large Cohort of Patients With 22q11.2 Deletion Syndrome. J Pediatr. 2021;238:215-220.e5. doi: 10.1016/j.jpeds.2021.07.020.
10. Devriendt K, Swillen A, Fryns JP, Proesmans W, Gewillig M. Renal and urological tract malformations caused by a 22q11 deletion. J Med Genet. 1996;33(4):349.
11. Bohm LA, Zhou TC, Mingo TJ, et al. Neuroradiographic findings in 22q11.2 deletion syndrome. American Journal of Medical Genetics Part A. 2017;173(8):2158-2165. doi: 10.1002/ajmg.a.38304.
12. Ryan AK, Goodship JA, Wilson DI, et al. Spectrum of clinical features associated with interstitial chromosome 22q11 deletions: A European collaborative study. J Med Genet. 1997;34(10):798-804.
13. Bộ Y tế. Bộ Y tế công bố kết quả Tổng điểu tra Dinh dưỡng năm 2019-2020. Tin nổi bật - Cổng thông tin Bộ Y tế. Accessed September 13, 2022. https://moh.gov.vn/tin-noi-bat/-/asset_publisher/3Yst7YhbkA5j/content/bo-y-te-cong-bo-ket-qua-tong-ieu-tra-dinh-duong-nam-2019-2020.
14. Lawrence S, McDonald-McGinn DM, Zackai E. Thrombocytopenia in patients with chromosome 22q11.2 deletion syndrome. J Pediatr. 2003;143(2):277-278. doi: 10.1067/S0022-3476(03)00248-8.
15. Kato T, Kosaka K, Kimura M, et al. Thrombocytopenia in patients with 22q11.2 deletion syndrome and its association with glycoprotein Ib-beta. Genet Med. 2003;5(2):113-119. doi: 10.1097/01.GIM.0000056828.03164.30.
16. Naqvi N, Davidson SJ, Wong D, et al. Predicting 22q11.2 deletion syndrome: a novel method using the routine full blood count. Int J Cardiol. 2011;150(1):50-53. doi: 10.1016/j.ijcard.2010.02.027.