In Brief: This point of view article focuses on the potential contribution of defects in protein synthesis (translation) to the incidence of oocyte meiotic failure. We discuss the potential cause of diminished oocyte translation during aging and the impact of these deficits on the function of the meiotic spindle.
Abstract: Errors during female meiosis lead to embryonic aneuploidy and miscarriage and occur with increasing frequency during aging.
Purpose: To explore if a day 7 blastocyst is predictive of the reproductive potential of sibling day 5 or day 6 blastocysts?
Methods: Retrospective cohort of autologous frozen embryo transfers (FET), February 2019 to April 2022. Cycles divided into groups 1 to 5, according to the day of embryo cryopreservation and the presence of a day 7 blastocyst sibling within the cohort: group 1/group 2-day 5 blastocyst without/with a day 7 sibling, group 3/group 4-day 6 blastocyst without/with a day 7 sibling, group 5-day 7 blastocyst. Clinical, ongoing pregnancy and miscarriage rates, cycle, and patient characteristics are reported.