PMID- 36854417 OWN - NLM STAT- MEDLINE DCOM- 20230302 LR - 20230302 IS - 1003-9406 (Print) IS - 1003-9406 (Linking) VI - 40 IP - 3 DP - 2023 Mar 10 TI - [Prenatal diagnosis and genetic analysis of two cases of Turner syndrome due to isodicentric Xp11.22]. PG - 368-373 LID - 10.3760/cma.j.cn511374-20210911-00743 [doi] AB - OBJECTIVE: To explore the genetic characteristics of idic(X)(p11.22) in Turner syndrome (TS). METHODS: Two fetuses suspected for sex chromosome abnormalities or ultrasound abnormalities were selected from Chengdu Women's and Children's Central Hospital in October 2020 and June 2020, and amniotic fluid samples were collected for G-banded chromosomal karyotyping analysis, chromosomal microarray analysis (CMA), and fluorescence in situ hybridization (FISH). RESULTS: The two fetuses were respectively found to have a karyotype of 45,X[47]/46,X,psu idic(X)(p11.2)[53] and 46,X,psu idic(X)(p11.2). CMA found that both had deletions in the Xp22.33p11.22 region and duplications in the p11.22q28 region. FISH showed that the centromeres in both fetuses had located on an isochromosome. CONCLUSION: The combination of karyotyping analysis, FISH, and CMA is useful for the delineation of complex structural chromosomal aberrations. High-resolution CMA can accurately identify chromosomal breakpoints, which can provide a clue for elucidating the mechanism of chromosomal breakage and rearrangement. FAU - Wang, Lingxi AU - Wang L AD - Prenatal Diagnosis Center, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan 610073, China. wuyong633@163.com. FAU - Kang, Han AU - Kang H FAU - Hu, Yu AU - Hu Y FAU - Wu, Yong AU - Wu Y LA - chi PT - Case Reports PT - English Abstract PT - Journal Article PL - China TA - Zhonghua Yi Xue Yi Chuan Xue Za Zhi JT - Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical genetics JID - 9425197 SB - IM MH - Female MH - Pregnancy MH - Humans MH - *Turner Syndrome/diagnosis/genetics MH - In Situ Hybridization, Fluorescence MH - Sex Chromosome Aberrations MH - Centromere MH - Prenatal Diagnosis EDAT- 2023/03/01 06:00 MHDA- 2023/03/03 06:00 CRDT- 2023/02/28 19:23 PHST- 2023/02/28 19:23 [entrez] PHST- 2023/03/01 06:00 [pubmed] PHST- 2023/03/03 06:00 [medline] AID - 940640069 [pii] AID - 10.3760/cma.j.cn511374-20210911-00743 [doi] PST - ppublish SO - Zhonghua Yi Xue Yi Chuan Xue Za Zhi. 2023 Mar 10;40(3):368-373. doi: 10.3760/cma.j.cn511374-20210911-00743.