Obstet Gynecol 2021 06;137(6):1102-1108
Department of Human Genetics, Katholieke Universiteit Leuven, Leuven, the Center for Human Genetics and the Department of Obstetrics and Gynecology, Universitair Ziekenhuis Leuven, Leuven, the Center for Medical Genetics, Universitair Ziekenhuis Gent, Ghent, the Center for Medical Genetics, Universitair Ziekenhuis Antwerpen, Antwerp, the Center for Medical Genetics, Universiteit Antwerpen, Antwerp, the Center for Medical Genetics, Centre Hospitalier Universitaire de Liège, Liège, the Center for Human Genetics, Université Libre de Bruxelles, Brussels, the Center for Human Genetics, Université Catholique de Louvain, Brussels, the Center for Medical Genetics, Institut de Pathologie et de Génétique Gosselies, Charleroi, the Center for Medical Genetics, Vrije Universiteit Brussel, Brussels, and the Department of Obstetrics, Women's Clinic, Universitair Ziekenhuis Gent, Ghent, Belgium.
Objective: To evaluate the accuracy and diagnostic value of genome-wide noninvasive prenatal testing (NIPT) for the detection of fetal aneuploidies in multiple gestations, with a focus on dichorionic-diamniotic twin pregnancies.
Methods: We performed a retrospective cohort study including data from pregnant women with a twin or higher-order gestation who underwent genome-wide NIPT at one of the eight Belgian genetic centers between November 1, 2013, and March 1, 2020. Chorionicity and amnionicity were determined by ultrasonography. Read More