PMID- 29241931 OWN - NLM STAT- MEDLINE DCOM- 20180801 LR - 20180801 IS - 1875-6263 (Electronic) IS - 1028-4559 (Linking) VI - 56 IP - 6 DP - 2017 Dec TI - Prenatal diagnosis of low-level mosaicism for trisomy 13 at amniocentesis associated with a favorable outcome. PG - 840-842 LID - S1028-4559(17)30264-4 [pii] LID - 10.1016/j.tjog.2017.10.025 [doi] AB - OBJECTIVE: We present prenatal diagnosis of low-level mosaicism for trisomy 13 at amniocentesis associated with a favorable outcome. CASE REPORT: A 35-year-old woman underwent amniocentesis at 18 weeks of gestation because of advanced maternal age. Amniocentesis revealed a karyotype of 47,XY,+13[5]/46,XY[20]. Oligonucleotide array comparative genomic hybridization (aCGH) analysis on uncultured amniocytes revealed arr [GRCh37] (13)x3 [0.10], (X,Y)x1 compatible with trisomy 13 mosaicism. Prenatal ultrasound was unremarkable. Repeat amniocentesis was performed at 21 weeks of gestation. Interphase fluorescence in situ hybridization (FISH) analysis on uncultured amniocytes revealed a mosaic trisomy 13 level of 10% (10/100 cells). aCGH analysis on uncultured amniocytes revealed a result of arr 13q12.11q34 (20,407,323-115,092,619)x2.1 with a log(2) ratio of 0.06 compatible with a 10% level of mosaicism. Polymorphic DNA marker analysis excluded uniparental disomy 13. The parental karyotypes were normal. Conventional cytogenetic analysis using cultured amniocytes at repeat amniocentesis revealed a karyotype of 46,XY in 23/23 colonies. The pregnancy was carried to 37 weeks of gestation, and a 3600-g phenotypically normal male baby was delivered. When examined at 8 months of age, the infant was doing well and was normal in psychomotor and growth development. The peripheral blood had a karyotype of 46,XY, and interphase FISH analysis on uncultured urinary cells revealed a mosaic trisomy 13 level of 4.4% (2/45 cells). CONCLUSION: Low-level true mosaicism for trisomy 13 at amniocentesis without ultrasound abnormalities can be associated with a favorable fetal outcome. 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 - 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 - Chuang, Tzu-Yun AU - Chuang TY 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 - Lee, Chen-Chi AU - Lee CC 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 SB - IM MH - Adult MH - *Amniocentesis MH - Comparative Genomic Hybridization MH - Cytogenetic Analysis/*methods MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Infant, Newborn MH - Live Birth MH - Male MH - Maternal Age MH - Mosaicism/*embryology MH - Pregnancy MH - Trisomy 13 Syndrome/*diagnosis/embryology/genetics OTO - NOTNLM OT - Amniocentesis OT - Mosaicism OT - Trisomy 13 EDAT- 2017/12/16 06:00 MHDA- 2018/08/02 06:00 CRDT- 2017/12/16 06:00 PHST- 2017/10/17 00:00 [accepted] PHST- 2017/12/16 06:00 [entrez] PHST- 2017/12/16 06:00 [pubmed] PHST- 2018/08/02 06:00 [medline] AID - S1028-4559(17)30264-4 [pii] AID - 10.1016/j.tjog.2017.10.025 [doi] PST - ppublish SO - Taiwan J Obstet Gynecol. 2017 Dec;56(6):840-842. doi: 10.1016/j.tjog.2017.10.025.