The predictive value of findings of the common aneuploidies, trisomies 13, 18 and 21, and numerical sex chromosome abnormalities at CVS: experience from the ACC U.K. collaborative study

Abstract excerpt

We report 611 non-mosaic and 91 mosaic findings of trisomies 13, 18 and 21, and numerical sex chromosome abnormalities in a series of 20,527 CVS, in the Association of Clinical Cytogeneticists U.K. Collaborative Study, the majority with analysis of both direct preparations and cultured cells. No false-positive results were encountered among the 611 non-mosaic cases, making these findings a very reliable indicator...

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