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- W4280532495 abstract "To comprehensively describe current preimplantation genetic testing for aneuploidy (PGT-A) practices and management of non-euploid embryos in Canada.This was a cross-sectional study utilizing an online survey distributed by email to all medical directors of fertility clinics with independent in vitro fertilization (IVF) embryology laboratories. The survey was designed to determine practice patterns regarding PGT-A usage; PGT-A reference laboratory, platform, and thresholds for classifying embryos; and management of embryos classified as mosaic, inconclusive, or aneuploid.Twenty-five medical directors (69%) participated in the survey. The majority of clinics (91%) offered PGT-A screening, with 45% of clinics offering PGT-A as routine screening. The majority of clinics (90%) that offered PGT-A received mosaicism data; 61% of these clinics had transferred mosaic embryos, and 94% would transfer mosaic embryos. Clinics that performed ≥1000 IVF cycles annually were more likely to have transferred mosaic embryos (100% vs. 45.5%; P = 0.043). The mean percentage of IVF cycles using PGT-A was lower in clinics that had transferred mosaic embryos (12.3% vs. 30.4%; P = 0.033). Only 1 clinic had transferred an aneuploid embryo, but 2 other clinics would consider this option. The majority of clinics (61%) that receive mosaicism data would recommend noninvasive prenatal testing (NIPT) following mosaic embryo transfer, with 22% of clinics indicating that this would be the only genetic test offered.We report significant practice variation in PGT-A and management of non-euploid embryos across Canada and highlight areas where consensus should be encouraged." @default.
- W4280532495 created "2022-05-22" @default.
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- W4280532495 date "2022-09-01" @default.
- W4280532495 modified "2023-10-18" @default.
- W4280532495 title "National Canadian Survey on the Management of Noneuploid Embryos" @default.
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- W4280532495 doi "https://doi.org/10.1016/j.jogc.2022.04.013" @default.
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