PMID- 25017279 OWN - NLM STAT- MEDLINE DCOM- 20150423 LR - 20161125 IS - 1875-6263 (Electronic) IS - 1028-4559 (Linking) VI - 53 IP - 2 DP - 2014 Jun TI - Prenatal diagnosis and molecular cytogenetic characterization of chromosome 22q11.2 deletion syndrome associated with congenital heart defects. PG - 248-51 LID - S1028-4559(14)00083-7 [pii] LID - 10.1016/j.tjog.2014.04.021 [doi] AB - OBJECTIVE: To report prenatal diagnosis of 22q11.2 deletion syndrome in a pregnancy with congenital heart defects in the fetus. CASE REPORT: A 26-year-old, primigravid woman was referred for counseling at 24 weeks of gestation because of abnormal ultrasound findings of fetal congenital heart defects. The Level II ultrasound revealed a singleton fetus with heart defects including overriding aorta, small pulmonary artery, and ventricular septal defect. Cordocentesis was performed. The DNA extracted from the cord blood was analyzed by multiplex ligation-dependent amplification (MLPA). The MLPA showed deletion in the DiGeorge syndrome (DGS) critical region of chromosome 22 low copy number repeat (LCR) 22-A approximately C. Conventional cytogenetic analysis revealed a normal male karyotype. Repeated amniocentesis and cordocentesis were performed. Whole-genome array comparative genomic hybridization (aCGH) on cord blood was performed. aCGH detected a 3.07-Mb deletion at 22q11.21. Conventional cytogenetic analysis of cultured amniocytes revealed a karyotype 46,XY. Metaphase fluorescence in situ hybridization (FISH) analysis on cultured amniocytes confirmed an interstitial 22q11.2 deletion. CONCLUSION: Prenatal ultrasound findings of congenital heart defects indicate that the fetuses are at increased risk for chromosome abnormalities. Studies for 22q11.2 deletion syndrome should be considered adjunct to conventional karyotyping. Although FISH has become a standard procedure for diagnosis of 22q11.2 deletion syndrome, MLPA can potentially diagnose a broader spectrum of abnormalities, and aCGH analysis has the advantage of refining the 22q11.2 deletion breakpoints and detecting uncharacterized chromosome rearrangements or genomic imbalances. CI - Copyright (c) 2014. Published by Elsevier B.V. FAU - Kuo, Yu-Ling AU - Kuo YL AD - Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan. FAU - Chen, Chih-Ping AU - Chen CP AD - Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan; Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan; Department of Biotechnology, Asia University, Taichung, Taiwan; School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan; Institute of Clinical and Community Health Nursing, National Yang-Ming University, Taipei, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, National Yang-Ming University, Taipei, Taiwan. Electronic address: cpc_mmh@yahoo.com. FAU - Wang, Liang-Kai AU - Wang LK AD - Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan. FAU - Ko, Tsang-Ming AU - Ko TM AD - GenePhile Bioscience Laboratory, Ko's Obstetrics and Gynecology, Taipei, Taiwan. FAU - Chang, Tung-Yao AU - Chang TY AD - Taiji Fetal Medicine Center, Taipei, Taiwan. FAU - Chern, Schu-Rern AU - Chern SR AD - Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan. FAU - Wu, Peih-Shan AU - Wu PS AD - Gene Biodesign Co. Ltd, Taipei, Taiwan. FAU - Chen, Yu-Ting AU - Chen YT AD - Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan. FAU - Chang, Shu-Yuan AU - Chang SY AD - Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan. LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China (Republic : 1949- ) TA - Taiwan J Obstet Gynecol JT - Taiwanese journal of obstetrics & gynecology JID - 101213819 RN - Chromosome 22q11.2 Deletion Syndrome, Distal SB - IM MH - Abnormalities, Multiple/*diagnosis/genetics MH - Adult MH - Chromosome Deletion MH - Chromosomes, Human, Pair 22/genetics MH - Comparative Genomic Hybridization MH - DiGeorge Syndrome/*diagnosis/genetics MH - Female MH - Fetal Diseases/*diagnostic imaging/*genetics MH - Heart Defects, Congenital/*diagnostic imaging/genetics MH - Humans MH - In Situ Hybridization MH - Karyotype MH - Male MH - Multiplex Polymerase Chain Reaction MH - Pregnancy MH - Prenatal Diagnosis MH - Ultrasonography OTO - NOTNLM OT - 22q11.2 deletion syndrome OT - congenital heart defects OT - prenatal diagnosis EDAT- 2014/07/16 06:00 MHDA- 2015/04/24 06:00 CRDT- 2014/07/15 06:00 PHST- 2014/04/16 00:00 [accepted] PHST- 2014/07/15 06:00 [entrez] PHST- 2014/07/16 06:00 [pubmed] PHST- 2015/04/24 06:00 [medline] AID - S1028-4559(14)00083-7 [pii] AID - 10.1016/j.tjog.2014.04.021 [doi] PST - ppublish SO - Taiwan J Obstet Gynecol. 2014 Jun;53(2):248-51. doi: 10.1016/j.tjog.2014.04.021.