PMID- 31478360 OWN - NLM STAT- MEDLINE DCOM- 20200622 LR - 20210110 IS - 2324-9269 (Electronic) IS - 2324-9269 (Linking) VI - 7 IP - 10 DP - 2019 Oct TI - Inverted duplication, triplication and quintuplication through sequential breakage-fusion-bridge events induced by a terminal deletion at 5p in a case of spontaneous abortion. PG - e00965 LID - 10.1002/mgg3.965 [doi] LID - e00965 AB - BACKGROUND: Integrated chromosome, fluorescence in situ hybridization (FISH) and array comparative genomic hybridization (aCGH) analyses have been effective in defining unbalanced chromosomal rearrangements. Discordant chromosome and aCGH results are rarely reported. METHODS: Routine cytogenomic analyses and literature review were performed in the study of a case from products of conception (POC). RESULTS: Chromosome and FISH analysis revealed a mosaic pattern consisting of a primary aberration of an inverted duplication of 5p and derived secondary and tertiary aberrations from sequential triplication and quintuplication of 5p, respectively. The aCGH analysis detected only a 1.521 Mb terminal deletion at 5p15.33 with no other pathogenic copy number variants in the genome. This mosaic karyotypic pattern likely resulted from chromosome instability induced by sequential breakage-fusion-bridge events during in vitro cell culture. A review of literature found heterogeneous distal deletion and inverted duplication of 5p in prenatal and pediatric cases. CONCLUSION: This is the first case reported in POC with a unique mosaic pattern and discordant chromosome and aCGH results. Caution should be applied in reporting and interpreting these discordant results and further analysis for underlying mechanism should be considered. CI - (c) 2019 The Authors. Molecular Genetics & Genomic Medicine published by Wiley Periodicals, Inc. FAU - Chai, Hongyan AU - Chai H AD - Clinical Cytogenetics Laboratory, Department of Genetics, Yale University School of Medicine, New Haven, CT, USA. FAU - Grommisch, Brittany AU - Grommisch B AD - Clinical Cytogenetics Laboratory, Department of Genetics, Yale University School of Medicine, New Haven, CT, USA. FAU - DiAdamo, Autumn AU - DiAdamo A AD - Clinical Cytogenetics Laboratory, Department of Genetics, Yale University School of Medicine, New Haven, CT, USA. FAU - Wen, Jiadi AU - Wen J AD - Clinical Cytogenetics Laboratory, Department of Genetics, Yale University School of Medicine, New Haven, CT, USA. FAU - Hui, Pei AU - Hui P AD - Department of Pathology, Yale University School of Medicine, New Haven, CT, USA. FAU - Li, Peining AU - Li P AUID- ORCID: 0000-0003-4746-4905 AD - Clinical Cytogenetics Laboratory, Department of Genetics, Yale University School of Medicine, New Haven, CT, USA. LA - eng PT - Case Reports PT - Journal Article DEP - 20190902 PL - United States TA - Mol Genet Genomic Med JT - Molecular genetics & genomic medicine JID - 101603758 RN - 0 (Receptors, G-Protein-Coupled) RN - 0 (TAS2R1 protein, human) SB - IM MH - Abortion, Spontaneous/*diagnosis/genetics MH - Adult MH - Chromosomal Instability MH - *Chromosome Deletion MH - Comparative Genomic Hybridization MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotype MH - Pregnancy MH - Receptors, G-Protein-Coupled/genetics PMC - PMC6785443 OTO - NOTNLM OT - breakage-fusion-bridge OT - inverted duplication OT - terminal deletion at 5p COIS- The authors declare no conflict of interest. There were no prestudy requirements on the patient's specimens and clinical indications and no poststudy interaction and intervention with the patients. This clinical report was a retrospective study and deemed exempted from Institutional Review Boards (IRB) approval and waiver of consent based on the policy of Yale University IRB. EDAT- 2019/09/04 06:00 MHDA- 2020/06/23 06:00 PMCR- 2019/09/02 CRDT- 2019/09/04 06:00 PHST- 2019/07/12 00:00 [received] PHST- 2019/08/09 00:00 [revised] PHST- 2019/08/12 00:00 [accepted] PHST- 2019/09/04 06:00 [pubmed] PHST- 2020/06/23 06:00 [medline] PHST- 2019/09/04 06:00 [entrez] PHST- 2019/09/02 00:00 [pmc-release] AID - MGG3965 [pii] AID - 10.1002/mgg3.965 [doi] PST - ppublish SO - Mol Genet Genomic Med. 2019 Oct;7(10):e00965. doi: 10.1002/mgg3.965. Epub 2019 Sep 2.