Vialard F1, Simoni G, Aboura A, De Toffol S, Molina Gomes D, Marcato L, Serero S, Clement P, Bouhanna P, Rouleau E, Grimi B, Selva J, Gaetani E, Maggi F, Joseph A, Benzacken B, Grati FR
1Department of Cytogenetics, Obstetrics and Gynaeacology, CHI Poissy St Germain, Poissy, France; UVSQ, EA 2493, Versailles, France. fvialard@hotmail.com
Prenat Diagn. 2011 May;31(5):500-8
Molecular cytogenetic techniques on uncultured prenatal samples are the sole tests applied in some countries in cases with advanced maternal age (AMA) or increased risk after prenatal screening. Moreover, there is a trend to perform invasive prenatal diagnosis (PD) during the first trimester before ultrasound manifestations, so new rapid and reliable assays are necessary to investigate microdeletions not detectable with the conventional karyotype. We report the validation study of the prenatal bacterial artificial chromosomes-on-Beads (BoBs; CE-IVD), a bead-based multiplex assay detecting chromosomes 13, 18, 21, X/Y aneuploidies and nine microdeletion regions having an overall detection rate of 1/1700.Prenatal BoBs is a robust technology for the investigation of fetuses with normal karyotype with or without sonographic abnormalities. Running in parallel with the karyotype analysis, it can be proposed instead of rapid FISH or QF-PCR providing rapid results on common aneuploidies and additional information regarding the microdeletion syndromes. Copyright 2011 John Wiley & Sons, Ltd.
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