Wendy Y Zhang1, Frauke von Versen-Höynck2, Kristopher I Kapphahn3, Raquel R Fleischmann4, Qianying Zhao4, Valerie L Baker5. 1. Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Stanford University Medical Center, Sunnyvale, California. Electronic address: wendyz@stanford.edu. 2. Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Stanford University Medical Center, Sunnyvale, California; Hannover Medical School, Department of Obstetrics and Gynecology, Lower Saxony, Germany. 3. Quantitative Science Unit, Stanford University School of Medicine, Stanford, California. 4. Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Stanford University Medical Center, Sunnyvale, California. 5. Johns Hopkins University School of Medicine, Baltimore, Maryland.
Abstract
OBJECTIVE: To assess whether pregnancies achieved with trophectoderm biopsy for preimplantation genetic testing (PGT) have different risks of adverse obstetric and neonatal outcomes compared with pregnancies achieved with IVF without biopsy. DESIGN: Observational cohort. SETTING: University-affiliated fertility center. PATIENT(S): Pregnancies achieved via IVF with PGT (n = 177) and IVF without PGT (n = 180) that resulted in a live birth. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Maternal outcomes including preeclampsia and placenta previa and neonatal outcomes including birth weight and birth defects. RESULT(S): There was a statistically significant increase in the risk of preeclampsia among IVF+PGT pregnancies compared with IVF without PGT pregnancies, with an incidence of 10.5% versus 4.1% (adjusted odds ratio [aOR] = 3.02; 95% confidence interval [95% CI], 1.10, 8.29). The incidence of placenta previa was 5.8% in IVF+PGT pregnancies versus 1.4% in IVF without PGT pregnancies (aOR = 4.56; 95% CI, 0.93, 22.44). Similar incidences of gestational diabetes, preterm premature rupture of membranes, and postpartum hemorrhage were observed. IVF+PGT and IVF without PGT neonates did not have a significantly different gestational age at delivery or rate of preterm birth, low birth weight, neonatal intensive care unit admission, neonatal morbidities, or birth defects. All trends, including the significantly increased risk of preeclampsia in IVF+PGT pregnancies, persisted upon stratification of analysis to only singleton live births. CONCLUSION(S): To date, this is the largest and most extensively controlled study examining maternal and neonatal outcomes after trophectoderm biopsy. There was a statistically significant three-fold increase in the odds of preeclampsia associated with trophectoderm biopsy. Given the rise in PGT use, further investigation is warranted.
OBJECTIVE: To assess whether pregnancies achieved with trophectoderm biopsy for preimplantation genetic testing (PGT) have different risks of adverse obstetric and neonatal outcomes compared with pregnancies achieved with IVF without biopsy. DESIGN: Observational cohort. SETTING: University-affiliated fertility center. PATIENT(S): Pregnancies achieved via IVF with PGT (n = 177) and IVF without PGT (n = 180) that resulted in a live birth. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Maternal outcomes including preeclampsia and placenta previa and neonatal outcomes including birth weight and birth defects. RESULT(S): There was a statistically significant increase in the risk of preeclampsia among IVF+PGT pregnancies compared with IVF without PGT pregnancies, with an incidence of 10.5% versus 4.1% (adjusted odds ratio [aOR] = 3.02; 95% confidence interval [95% CI], 1.10, 8.29). The incidence of placenta previa was 5.8% in IVF+PGT pregnancies versus 1.4% in IVF without PGT pregnancies (aOR = 4.56; 95% CI, 0.93, 22.44). Similar incidences of gestational diabetes, preterm premature rupture of membranes, and postpartum hemorrhage were observed. IVF+PGT and IVF without PGT neonates did not have a significantly different gestational age at delivery or rate of preterm birth, low birth weight, neonatal intensive care unit admission, neonatal morbidities, or birth defects. All trends, including the significantly increased risk of preeclampsia in IVF+PGT pregnancies, persisted upon stratification of analysis to only singleton live births. CONCLUSION(S): To date, this is the largest and most extensively controlled study examining maternal and neonatal outcomes after trophectoderm biopsy. There was a statistically significant three-fold increase in the odds of preeclampsia associated with trophectoderm biopsy. Given the rise in PGT use, further investigation is warranted.
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