PMID- 28805616 OWN - NLM STAT- MEDLINE DCOM- 20180509 LR - 20180509 IS - 1875-6263 (Electronic) IS - 1028-4559 (Linking) VI - 56 IP - 4 DP - 2017 Aug TI - Prenatal diagnosis and molecular cytogenetic characterization of mosaicism for a small supernumerary marker chromosome derived from chromosome 16. PG - 545-549 LID - S1028-4559(17)30155-9 [pii] LID - 10.1016/j.tjog.2017.05.004 [doi] AB - OBJECTIVE: We present prenatal diagnosis and molecular cytogenetic characterization of a small supernumerary marker chromosome (sSMC) derived from chromosome 16. CASE REPORT: A 28-year-old woman underwent amniocentesis at 17 weeks of gestation because of abnormal maternal serum screening for Down syndrome. Amniocentesis revealed a karyotype of 47,XY,+mar[5]/46,XY[9]. Parental karyotypes were normal. Prenatal ultrasound findings were unremarkable. Array comparative genomic hybridization (aCGH) analysis of cultured amniocytes revealed a de novo 16% gene dosage increase of 16q11.2-q22.1. Repeat amniocentesis at 21 weeks of gestation revealed a karyotype of 47,XY,+mar[10]/46,XY[31]. aCGH analysis of uncultured amniocytes revealed a result of arr 16q11.2q22.1 (46,492,626-68,867,969) x 2.20 with a log2 ratio of 0.15 encompassing RPGRIP1L, FTO, SLC6A2, BBS2 and CDH1. Interphase fluorescence in situ hybridization (FISH) analysis on uncultured amniocytes detected partial trisomy 16q in 36/137 (26.3%) of uncultured amniocytes. Polymorphic DNA marker analysis on amniocytes and parental bloods excluded uniparental disomy 16. Premature labor occurred at 25 weeks of gestation, and a 585-g male baby without craniofacial dysmorphism was delivered and survived. At age 1(1/2) years, pediatric follow-ups revealed normal psychomotor development, normal body weight, short stature, congenital hypothyroidism, hearing impairment and hypospadias in the neonate, and the peripheral blood had a karyotype of 46,XY in 40 cultured lymphocytes. CONCLUSION: aCGH, interphase FISH and polymorphic DNA marker analyses of uncultured amniocytes are useful for confirmation of prenatally detected mosaic sSMCs at amniocentesis. CI - Copyright (c) 2017. Published by Elsevier B.V. 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 - Ko, Tsang-Ming AU - Ko TM AD - Genephile Bioscience Laboratory, Ko's Obstetrics and Gynecology, 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, Shin-Wen AU - Chen SW AD - Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan. FAU - Lai, Shih-Ting AU - Lai ST AD - Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan. FAU - Yang, Chien-Wen AU - Yang CW AD - Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan. FAU - Pan, Chen-Wen AU - Pan CW AD - Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan. FAU - Wang, Wayseen AU - Wang W AD - Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan; Department of Bioengineering, Tatung University, Taipei, Taiwan. LA - eng PT - Case Reports PT - Journal Article PL - China (Republic : 1949- ) TA - Taiwan J Obstet Gynecol JT - Taiwanese journal of obstetrics & gynecology JID - 101213819 RN - 0 (Genetic Markers) RN - Chromosome 16, trisomy 16q SB - IM MH - Adult MH - Amniocentesis MH - Chromosomes, Human, Pair 16 MH - Comparative Genomic Hybridization MH - Cytogenetic Analysis MH - Female MH - Genetic Markers MH - Gestational Age MH - Humans MH - In Situ Hybridization, Fluorescence MH - Infant, Newborn MH - Karyotype MH - Karyotyping MH - Live Birth MH - Male MH - Mosaicism/*embryology MH - Pregnancy MH - Prenatal Diagnosis/*methods MH - Trisomy/*diagnosis OTO - NOTNLM OT - 16q11.2-q22.1 duplication OT - Chromosome 16 OT - Prenatal diagnosis OT - Small supernumerary marker chromosome EDAT- 2017/08/15 06:00 MHDA- 2018/05/10 06:00 CRDT- 2017/08/15 06:00 PHST- 2017/05/25 00:00 [accepted] PHST- 2017/08/15 06:00 [entrez] PHST- 2017/08/15 06:00 [pubmed] PHST- 2018/05/10 06:00 [medline] AID - S1028-4559(17)30155-9 [pii] AID - 10.1016/j.tjog.2017.05.004 [doi] PST - ppublish SO - Taiwan J Obstet Gynecol. 2017 Aug;56(4):545-549. doi: 10.1016/j.tjog.2017.05.004.