PMID- 24434231 OWN - NLM STAT- MEDLINE DCOM- 20141106 LR - 20161229 IS - 1879-3479 (Electronic) IS - 0020-7292 (Linking) VI - 125 IP - 1 DP - 2014 Apr TI - Prenatal diagnosis of Prader-Willi syndrome and Angelman syndrome for fetuses with suspicious deletion of chromosomal region 15q11-q13. PG - 18-21 LID - S0020-7292(13)00672-3 [pii] LID - 10.1016/j.ijgo.2013.09.028 [doi] AB - OBJECTIVE: To identify Prader-Willi syndrome (PWS) and Angelman syndrome (AS) among fetuses with suspicious deletion of the chromosomal region 15q11-q13. METHODS: In a retrospective study, data were assessed from fetuses missing chromosomal band 15q12 that underwent molecular diagnosis at the National Chen-Kung University Hospital, Tainan, Taiwan, between January 2001 and December 2012. Amniocytes were subjected to molecular testing, including fluorescence in situ hybridization (FISH) analysis, methylation-specific PCR (M-PCR), and methylation-specific multiplex-ligation-dependent probe amplification (MS-MLPA). RESULTS: During the 12-year study period, 26 041 amniocyte samples were analyzed at the study center and 27 (0.1%) were found to have a missing 15q12 band. A further 16 samples with a missing 15q12 band were received from other cytogenetic laboratories; as a result, 43 amniocyte samples lacking chromosomal band 15q12 underwent further molecular testing. Among these samples, 3 fetuses (7.0%) were found to have PWS (n=1) or AS (n=2). CONCLUSION: A minority of cases with missing 15q12 had deletion of the PWS/AS critical region. This finding draws attention to the subtle structural rearrangements that occur on 15q11-q13 and provides useful information for prenatal diagnosis of PWS and AS. CI - Copyright (c) 2013 International Federation of Gynecology and Obstetrics. Published by Elsevier Ireland Ltd. All rights reserved. FAU - Chang, Chia-Wei AU - Chang CW AD - Department of Obstetrics and Gynecology, National Chen-Kung University Hospital and College of Medicine, Tainan, Taiwan. FAU - Hsu, Hui-Kuo AU - Hsu HK AD - Cytogenetic Laboratory of the Department of Pathology, National Chen-Kung University Hospital and College of Medicine, Tainan, Taiwan. FAU - Kao, Chiu-Ching AU - Kao CC AD - Department of Obstetrics and Gynecology, National Chen-Kung University Hospital and College of Medicine, Tainan, Taiwan. FAU - Huang, Jyun-Yuan AU - Huang JY AD - Department of Obstetrics and Gynecology, National Chen-Kung University Hospital and College of Medicine, Tainan, Taiwan. FAU - Kuo, Pao-Lin AU - Kuo PL AD - Department of Obstetrics and Gynecology, National Chen-Kung University Hospital and College of Medicine, Tainan, Taiwan. Electronic address: paolink@mail.ncku.edu.tw. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140102 PL - United States TA - Int J Gynaecol Obstet JT - International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics JID - 0210174 SB - IM MH - Adult MH - Angelman Syndrome/*diagnosis/genetics MH - Chromosomes, Human, Pair 15/genetics MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Nucleic Acid Amplification Techniques/methods MH - Polymerase Chain Reaction MH - Prader-Willi Syndrome/*diagnosis/genetics MH - Pregnancy MH - Prenatal Diagnosis/*methods MH - Retrospective Studies MH - *Sequence Deletion MH - Taiwan OTO - NOTNLM OT - Angelman syndrome OT - Prader-Willi syndrome OT - Prenatal diagnosis EDAT- 2014/01/18 06:00 MHDA- 2014/11/07 06:00 CRDT- 2014/01/18 06:00 PHST- 2013/06/06 00:00 [received] PHST- 2013/09/11 00:00 [revised] PHST- 2013/12/22 00:00 [accepted] PHST- 2014/01/18 06:00 [entrez] PHST- 2014/01/18 06:00 [pubmed] PHST- 2014/11/07 06:00 [medline] AID - S0020-7292(13)00672-3 [pii] AID - 10.1016/j.ijgo.2013.09.028 [doi] PST - ppublish SO - Int J Gynaecol Obstet. 2014 Apr;125(1):18-21. doi: 10.1016/j.ijgo.2013.09.028. Epub 2014 Jan 2.