PIMS vs PGT-A in Infertile PCOS Patients

This experiment has become a serious issue for two reasons: DNA methylation plays an important role during embryogenesis, global abnormal methylome reprogramming often occurs in human embryos, and DNA methylome pattern is associated with live birth rate. The endocrine metabolic disorders of polycystic ovarian syndrome (PCOS) patients may affect the epigenetic status of embryos and lead to the increase of early pregnancy loss rate in PCOS patients. However, there is still no technology using DNA methylome as an indicator in preimplantation embryo screening in PCOS patients. Our recent study showed that using Pre-implantation Methylation Screening (PIMS) can select embryos with better methylation state and euploid chromosomes. The efficiency of PIMS in PCOS patients needs further validation through randomized controlled clinical trial. The purpose of the study is to compare whether the two groups of PCOS patients who selected embryos using PIMS and selected embryos using "PGT-A + morphology"had any difference in early pregnancy loss rate. This study aims to explore whether PIMS can be used as another embryo evaluation method besides "PGT-A+morphology" to screen good developmental potential embryos in patients with PCOS. Investigators need to clarify whether a better embryo evaluation system can be established through PIMS technology during assisted reproductive treatment for infertile PCOS couples and provide credible and effective evidence-based medical evidence for the appli…

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