PMID- 31759541 OWN - NLM STAT- MEDLINE DCOM- 20200504 LR - 20210311 IS - 1875-6263 (Electronic) IS - 1028-4559 (Linking) VI - 58 IP - 6 DP - 2019 Nov TI - Prenatal diagnosis of mosaicism for trisomy 7 in a single colony at amniocentesis in a pregnancy with a favorable outcome. PG - 852-854 LID - S1028-4559(19)30227-X [pii] LID - 10.1016/j.tjog.2019.09.022 [doi] AB - OBJECTIVE: We present prenatal diagnosis of mosaicism for trisomy 7 in a single colony at amniocentesis with a favorable outcome. CASE REPORT: A 40-year-old woman underwent amniocentesis at 17 weeks of gestation because of advanced maternal age. Amniocentesis revealed a result of 47,XY,+7[1]/46,XY[26]. In 27 colonies of cultured amniocytes, all five cells in one colony had trisomy 7, while the rest 26 colonies had a normal karyotype. The parental karyotypes were normal. Repeat amniocentesis was performed at 19 weeks of gestation. Interphase fluorescence in situ hybridization (FISH) was applied on the uncultured amniocytes, and the result showed trisomy 7 signals in 4% (3/75 cells) of the uncultured amniocytes compared with 1.4% (1/70 cells) in the normal control. Uniparental disomy (UPD) 7 was excluded by polymorphic DNA marker analysis. The cultured amniocytes at repeat amniocentesis had a karyotype of 46,XY. Prenatal ultrasound findings were unremarkable. A healthy 3332-g male baby was delivered at 38 weeks of gestation. The karyotype of cord blood lymphocytes was 46,XY. The boy was phenotypically normal at age 8 months at follow-up. No trisomy 7 signal could be detected in the postnatal FISH analysis of the urinary cells. CONCLUSION: Mosaicism for trisomy 7 in a single colony at amniocentesis without UPD 7 can be associated with a favorable outcome. CI - Copyright (c) 2019. 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 - Hung, Fang-Yu AU - Hung FY AD - Department of Obstetrics and Gynecology, Hsinchu MacKay Memorial Hospital, Hsinchu, Taiwan. FAU - Chern, Schu-Rern AU - Chern SR AD - Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan. FAU - Chen, Shin-Wen AU - Chen SW AD - Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan. FAU - Wu, Fang-Tzu AU - Wu FT AD - Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan. FAU - Town, Dai-Dyi AU - Town DD 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 - Chromosome 7, trisomy mosaic SB - IM CIN - Taiwan J Obstet Gynecol. 2021 Mar;60(2):390-391. PMID: 33678357 MH - Adult MH - Amniocentesis/*methods MH - Chromosomes, Human, Pair 7/genetics MH - Comparative Genomic Hybridization MH - Female MH - Humans MH - Mosaicism MH - Pregnancy MH - Prenatal Diagnosis/*methods MH - Trisomy/*diagnosis/genetics MH - Uniparental Disomy/*genetics OTO - NOTNLM OT - Amniocentesis OT - Mosaicism OT - Prenatal diagnosis OT - Single colony OT - Trisomy 7 EDAT- 2019/11/25 06:00 MHDA- 2020/05/06 06:00 CRDT- 2019/11/25 06:00 PHST- 2019/09/06 00:00 [accepted] PHST- 2019/11/25 06:00 [entrez] PHST- 2019/11/25 06:00 [pubmed] PHST- 2020/05/06 06:00 [medline] AID - S1028-4559(19)30227-X [pii] AID - 10.1016/j.tjog.2019.09.022 [doi] PST - ppublish SO - Taiwan J Obstet Gynecol. 2019 Nov;58(6):852-854. doi: 10.1016/j.tjog.2019.09.022.