Mosaic Tetrasomy 9P at Amniocentesis: Prenatal Diagnosis, Molecular Cytogenetic Characterization, and Literature Review
Taiwanese Journal of Obstetrics & Gynecology 53 (2014) 79e85 Contents lists available at ScienceDirect Taiwanese Journal of Obstetrics & Gynecology journal homepage: www.tjog-online.com Short Communication Mosaic tetrasomy 9p at amniocentesis: Prenatal diagnosis, molecular cytogenetic characterization, and literature review Chih-Ping Chen a,b,c,d,e,f,*, Liang-Kai Wang a, Schu-Rern Chern b, Peih-Shan Wu g, Yu-Ting Chen b, Yu-Ling Kuo h, Wen-Lin Chen a, Meng-Shan Lee a, Wayseen Wang b,i a Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan b Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan c Department of Biotechnology, Asia University, Taichung, Taiwan d School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan e Institute of Clinical and Community Health Nursing, National Yang-Ming University, Taipei, Taiwan f Department of Obstetrics and Gynecology, School of Medicine, National Yang-Ming University, Taipei, Taiwan g Gene Biodesign Co. Ltd, Taipei, Taiwan h Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan i Department of Bioengineering, Tatung University, Taipei, Taiwan article info abstract Article history: Objective: This study was aimed at prenatal diagnosis of mosaic tetrasomy 9p and reviewing the Accepted 17 December 2013 literature. Materials and methods: A 37-year-old woman underwent amniocentesis at 20 weeks’ gestation because Keywords: of advanced maternal age and fetal ascites. Cytogenetic analysis of cultured amniocytes revealed 21.4% amniocentesis (6/28 colonies) mosaicism for a supernumerary i(9p). Repeat amniocentesis was performed at 23 weeks’ mosaicism gestation. Array comparative genomic hybridization, interphase fluorescence in situ hybridization, and supernumerary isochromosome 9p quantitative fluorescent polymerase chain reaction were applied to uncultured amniocytes, and con- tetrasomy 9p ventional cytogenetic analysis was applied to cultured amniocytes.
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