Structural and numerical chromosomal abnormalities are common in early developing embryos, and these abnormalities may cause spontaneous abortions and implantation failure. The reproductive risk of carriers with structural chromosomal abnormalities depends on the breakpoint positions, the segregation patterns and the sex of the carrier. These carriers have a lower chance of producing normal or ...

Background: Repeated implantation failure (RIF) is the main problem after using assisted reproductive techniques (ART). The main causes of RIF as a multifactorial problem including decrease in endometrial receptivity, defects of embryo or combinational. Successful embryo implantation depends on trophoblast proliferation, migration and invasion to the endometrium, all of which are associated wit...

statement of the problem in recent decades, immediate implant placement has been proposed to eliminate undesirable consequences of conventional methods of delayed placement. in addition, because of the nature of this treatment method, a higher risk of complications such as infection and also higher failures rates may be expected purpose the aim of this study was to compare clinical outcomes of ...

Abstract Background Window of implantation (WOI) displacement is one the endometrial origins embryo failure, especially repeated failure (RIF). An accurate prediction tool for receptivity (ER) extraordinarily needed to precisely guide successful implantation. We aimed establish an RNA-Seq-based test (rsERT) using transcriptomic biomarkers and evaluate benefit personalized transfer (pET) guided ...

Background Implantation failure is the most important cause of recurrent in vitro fertilization/intra cytoplasmic sperm injection (IVF/ICSI) failure. Several reports suggest that intercourse during the peritransfer period might improve pregnancy rates. This study is designed to determine whether intercourse during the peritransfer period will improve pregnancy and implantation rates in patients...