PMID- 27577220 OWN - NLM STAT- MEDLINE DCOM- 20170104 LR - 20170105 IS - 1003-9406 (Print) IS - 1003-9406 (Linking) VI - 33 IP - 5 DP - 2016 Oct TI - [Genetic and prenatal diagnosis of a pregnant women with mental retardation]. PG - 674-7 LID - 10.3760/cma.j.issn.1003-9406.2016.05.021 [doi] AB - OBJECTIVE: To conduct genetic testing and prenatal diagnosis for a pregnant women with growth retardation, severe mental retardation, and a history of adverse pregnancies. METHODS: G-banded chromosome analysis, fluorescence in situ hybridization (FISH), and whole genome DNA microarray were used to analyze the patient and her fetus. RESULTS: The women was found to be a chimera containing two cell lines with 47 and 46 chromosomes, respectively. Both have involved deletion of 18q21.2q23. FISH analysis suggested that the cell line containing 47 chromosomes has harbored a chromosome marker derived from chromosome 15. The marker has contained chromosome 15p involving the SNRPN locus and part of 15q, which gave rise to a karyotype of 47,XX,del18q21.3,+ish mar D15Z1+ SNRPN+[82]/46,XX,del18q21.3[18]. Whole genome DNA microarray confirmed that a 3.044 Mb fragment from 15q11.2q12 was duplicated, which involved NIPA1, SNRPN and other 17 OMIM genes. Duplication of this region has been characterized by low mental retardation, autism, developmental delay. Meanwhile, there was a 17.992 Mb deletion at 18q21.33q23, which contained 39 OMIM genes including TNFRSF11A and PHLPP1. This fragment was characterized by mental retardation, developmental delay, short stature, and cleft palate. Whole genome microarray analysis confirmed that there was a 17.9 Mb deletion at 18q21.33q23, which has been implemented with mental retardation, general growth retardation, short stature, and cleft palate. After genetic counseling, the family decided to terminate the pregnancy at 21st week. CONCLUSION: Combined chromosome karyotyping, FISH, and whole genome DNA microarray can determine the origin of marker chromosomes and facilitate delineation of its correlation with the clinical phenotype. FAU - Zhang, Lin AU - Zhang L AD - Center of Prenatal Diagnosis, Peking University People's Hospital, Beijing 100044, China. Email: zhanglinsun@sina.com. FAU - Ren, Meihong AU - Ren M FAU - Song, Guining AU - Song G FAU - Liu, Xuexia AU - Liu X FAU - Zhang, Jing AU - Zhang J FAU - Wang, Jianliu AU - Wang J LA - chi PT - Case Reports 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 - Abortion, Eugenic MH - Adult MH - *Chromosome Aberrations MH - Chromosome Banding MH - Chromosomes, Human, Pair 15/genetics MH - Chromosomes, Human, Pair 18/genetics MH - Fatal Outcome MH - Female MH - Fetus/abnormalities/*metabolism MH - Growth Disorders/embryology/*genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - Intellectual Disability/embryology/*genetics MH - Karyotype MH - Karyotyping MH - Prenatal Diagnosis/*methods EDAT- 2016/09/01 06:00 MHDA- 2017/01/05 06:00 CRDT- 2016/09/01 06:00 PHST- 2016/09/01 06:00 [entrez] PHST- 2016/09/01 06:00 [pubmed] PHST- 2017/01/05 06:00 [medline] AID - 940633142 [pii] AID - 10.3760/cma.j.issn.1003-9406.2016.05.021 [doi] PST - ppublish SO - Zhonghua Yi Xue Yi Chuan Xue Za Zhi. 2016 Oct;33(5):674-7. doi: 10.3760/cma.j.issn.1003-9406.2016.05.021.