Clinical Research Directory

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 application of PMIS technology in the field of reproductive medicine.

Evaluating the Utility of Implementing Microfluids for Sperm Preparation Compared to Conventional Method of Density Gradient Centrifugation in a PGT-A Program: a Sibling Oocyte Study

In assisted reproductive technology (ART), sperm preparation aims to select the most viable sperm for ICSI. Unlike conventional methods like density gradients or sperm washing, microfluidic techniques mimic natural selection in the female reproductive tract by using laminar flow without centrifugation, reducing the risk of DNA damage. This method isolates highly motile sperm while filtering out debris and immotile cells. Studies show that microfluidics improve embryo quality, increase pregnancy rates, and may lead to higher euploidy rates. Additional benefits include improved safety, scalability, and shorter preparation times.

Protocol with Progestin-primed Ovarian Stimulation (PPOS) from the Beginning of Stimulation Versus Protocol with GnRH Antagonists for Ovarian Stimulation in Patients Undergoing DUOSTIM with Embryo Accumulation for PGT-A.

The PPOS protocol (Progestin-primed Ovarian Stimulation) involves avoiding ovulation during ovarian stimulation with progesterone. It is a reliable and safe protocol that has been widely used in recent years for in vitro fertilization, as it reduces the number of injections needed during controlled ovarian stimulation and is more cost-effective for patients. The aim of this study is to compare two methods of ovarian stimulation for in vitro fertilization: the PPOS protocol (Group A) and the conventional protocol with injected antagonists (Group B). The goal is to determine whether both methods are equally effective in obtaining euploid embryos in the context of double ovarian stimulation.