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- W2013991108 abstract "ObjectiveTo determine how often trophectoderm biopsy and rapid, real-time quantitative polymerase chain reaction (PCR)-based comprehensive chromosome screening (CCS) alters clinical management by resulting in the transfer of a different embryo than would have been chosen by traditional day 5 morphology-based criteria.DesignProspective.SettingAcademic center for reproductive medicine.Patient(s)Infertile couples (n = 100; mean age 35 ± 4 years) with at least two blastocysts suitable for biopsy on day 5.Intervention(s)Prior to trophectoderm biopsy for CCS the embryologist identified which embryo would have been selected for traditional day 5 elective single ET.Main Outcome Measure(s)The risk of aneuploidy in the embryos that would have been selected on day 5 was calculated and compared with the aneuploidy rate of the cohort of all embryos that underwent CCS testing. The aneuploidy risk was compared between age groups.Result(s)After quantitative PCR-based CCS, 22% (95% confidence interval 15%–31%) of the embryos selected by day 5 morphology were aneuploid, which was lower than the 32% aneuploidy rate of the cohort. Patients ≥35 years had a higher risk of an aneuploid blastocyst being selected by morphology than those <35 years old (31% vs. 14%). Among patients who had selection altered by CCS, 74% (14/19) delivered, including 77% (10/13) after elective single ET. Most patients (77%) had an additional euploid blastocyst vitrified for future use.Conclusion(s)The CCS results alter embryo selection due to the presence of aneuploidy in embryos with optimal day 5 morphology. Excellent outcomes were obtained when CCS-based selection was different than morphology-based selection. To determine how often trophectoderm biopsy and rapid, real-time quantitative polymerase chain reaction (PCR)-based comprehensive chromosome screening (CCS) alters clinical management by resulting in the transfer of a different embryo than would have been chosen by traditional day 5 morphology-based criteria. Prospective. Academic center for reproductive medicine. Infertile couples (n = 100; mean age 35 ± 4 years) with at least two blastocysts suitable for biopsy on day 5. Prior to trophectoderm biopsy for CCS the embryologist identified which embryo would have been selected for traditional day 5 elective single ET. The risk of aneuploidy in the embryos that would have been selected on day 5 was calculated and compared with the aneuploidy rate of the cohort of all embryos that underwent CCS testing. The aneuploidy risk was compared between age groups. After quantitative PCR-based CCS, 22% (95% confidence interval 15%–31%) of the embryos selected by day 5 morphology were aneuploid, which was lower than the 32% aneuploidy rate of the cohort. Patients ≥35 years had a higher risk of an aneuploid blastocyst being selected by morphology than those <35 years old (31% vs. 14%). Among patients who had selection altered by CCS, 74% (14/19) delivered, including 77% (10/13) after elective single ET. Most patients (77%) had an additional euploid blastocyst vitrified for future use. The CCS results alter embryo selection due to the presence of aneuploidy in embryos with optimal day 5 morphology. Excellent outcomes were obtained when CCS-based selection was different than morphology-based selection." @default.
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- W2013991108 date "2013-09-01" @default.
- W2013991108 modified "2023-10-11" @default.
- W2013991108 title "Comprehensive chromosome screening alters traditional morphology-based embryo selection: a prospective study of 100 consecutive cycles of planned fresh euploid blastocyst transfer" @default.
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- W2013991108 doi "https://doi.org/10.1016/j.fertnstert.2013.04.043" @default.
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