Mosaic Chromosomal Aneuploidy Detection By Sequencing (MAD-seq)
Esther R. Berko,
Shahina B. Maqbool,
Claudia A. Simões-Pires,
David F. Kronn,
Kenny Q. Ye,
John M Greally
Posted 25 May 2017
bioRxiv DOI: 10.1101/142299 (published DOI: 10.1101/gr.226282.117)
Posted 25 May 2017
Current approaches to detect and characterize mosaic chromosomal aneuploidy are limited by sensitivity, efficiency, cost or the need to culture cells. We describe a combination of a new sequencing-based assay and a novel analytical approach that allows low levels of mosaicism for chromosomal aneuploidy to be detected, assigned to a meiotic or mitotic origin, and quantified as a proportion of the cells in the sample. We show results from a multi-ethnic assay design that is suitable for populations of diverse racial and ethnic origins, and how the MADSEQ analytical approach applied to exome sequencing data reveals unrecognized aneuploidy in 1000 Genomes samples and cell lines from public repositories. We have made the assay design and analytical software open for unrestricted use, with the goal that it can be applied in clinical samples to allow new insights into the unrecognized prevalence of mosaic chromosomal aneuploidy and its phenotypic associations.
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