Infertility affects about 10 percent of reproductive-aged couples, with more than 2 million ART treatments (including IVF and ICSI) performed worldwide each year. Currently 59% of fresh embryo transfers are performed on D5 and 31% on D3 in the United States (CDC report, 2015 data).
While the success of ART depends on multiple factors such as embryo quality and ET procedure, a successful pregnancy ultimately hinges on the receptivity of the uterus to accept embryo implantation. Uterine contractions at the time of ET, as well as suboptimal thickness of the uterine wall and blood flow to the uterus, may impair the implantation of the embryo.
ObsEva is currently advancing nolasiban (OBE001), an oral oxytocin receptor antagonist with the potential to decrease contractions, improve uterine blood flow and enhance the receptivity of the endometrium to embryo implantation. This increases the chance of successful pregnancy and live-birth among patients undergoing embryo transfer following ART.