PMID- 21692086 OWN - NLM STAT- MEDLINE DCOM- 20111201 LR - 20220408 IS - 1097-0223 (Electronic) IS - 0197-3851 (Linking) VI - 31 IP - 8 DP - 2011 Aug TI - The development of a rapid assay for prenatal testing of common aneuploidies and microdeletion syndromes. PG - 778-87 LID - 10.1002/pd.2766 [doi] AB - OBJECTIVE: To develop a novel, rapid prenatal assay for pregnancies with high likelihood of normal karyotypes, using BACs-on-Beads() technology, a suspension array-based multiplex assay that employs Luminex((R)) xMAP((R)) technology, for the detection of gains and losses in chromosomal DNA. METHODS: Fifteen relatively common microdeletions were selected that are not detectable, or may be missed, by karyotyping and usually do not present with abnormal ultrasound findings. Chromosomes 13, 18, 21, X, and Y were included. We validated the assay with 430 samples. RESULTS: All microdeletions and aneuploidies were correctly identified, except for a 69,XXX incorrectly identified as a normal female and a male with approximately 20% maternal cell contamination (MCC) that could not be distinguished from 69,XXY. MCC became apparent at 20 to 30%. Mosaicism was identified at 30 to 35% abnormal cells. CONCLUSION: We have developed an alternative to fluorescence in situ hybridization (FISH) aneuploidy screening and microarray analysis in otherwise normal pregnancies undergoing invasive testing. We demonstrated that the assay will detect all microdeletions and aneuploidies of regions covered on the assay. We developed analytical software that displays results for well-characterized syndromes but not abnormalities of unclear clinical significance. This assay is likely to be preferred by women seeking testing beyond routine karyotyping but who desire more information than provided by aneuploidy FISH. CI - Copyright (c) 2011 John Wiley & Sons, Ltd. FAU - Shaffer, Lisa G AU - Shaffer LG AD - Signature Genomic Laboratories, Spokane, WA 99207, USA. lisa.shaffer@perkinelmer.com FAU - Coppinger, Justine AU - Coppinger J FAU - Morton, S Annie AU - Morton SA FAU - Alliman, Sarah AU - Alliman S FAU - Burleson, Jessica AU - Burleson J FAU - Traylor, Ryan AU - Traylor R FAU - Walker, Cathryn AU - Walker C FAU - Byerly, Steve AU - Byerly S FAU - Lamb, Allen N AU - Lamb AN FAU - Schultz, Roger AU - Schultz R FAU - Ravnan, J Britt AU - Ravnan JB FAU - Kashork, Catherine D AU - Kashork CD FAU - Torchia, Beth S AU - Torchia BS FAU - Sulpizio, Scott AU - Sulpizio S FAU - Sundin, Kyle AU - Sundin K FAU - Schermer, Mack AU - Schermer M FAU - Adler, Karl AU - Adler K FAU - Dallaire, Stephanie AU - Dallaire S FAU - Ballif, Blake C AU - Ballif BC LA - eng PT - Journal Article PT - Validation Study DEP - 20110621 PL - England TA - Prenat Diagn JT - Prenatal diagnosis JID - 8106540 SB - IM MH - *Aneuploidy MH - Chromosome Disorders/*diagnosis MH - Female MH - Humans MH - Microarray Analysis/*methods MH - Pregnancy MH - Prenatal Diagnosis/*methods EDAT- 2011/06/22 06:00 MHDA- 2011/12/13 00:00 CRDT- 2011/06/22 06:00 PHST- 2011/01/07 00:00 [received] PHST- 2011/03/11 00:00 [revised] PHST- 2011/03/25 00:00 [accepted] PHST- 2011/06/22 06:00 [entrez] PHST- 2011/06/22 06:00 [pubmed] PHST- 2011/12/13 00:00 [medline] AID - 10.1002/pd.2766 [doi] PST - ppublish SO - Prenat Diagn. 2011 Aug;31(8):778-87. doi: 10.1002/pd.2766. Epub 2011 Jun 21.