Facteurs pronostiques des chances de naissance vivante enfécondation in vitro pour infertilité inexpliquée : étude de cohorte

International audienceObjectivesFor 15 to 30% of infertile couples, no etiology can be found, leading to the diagnosis of “unexplained infertility”.The aim of our study was to identify prognostic factors for live birth following in vitro fertilization(IVF) for these couples.MethodsA retrospective, monocentric study on a cohort of couples undergoing IVF for unexplained infertility withthe woman aged ≤ 40 years old. Primary analysis compared couples with a live birth following IVF versuschildless couples following IVF.ResultsBetween January 2014 and December 2018, 104 couples were included, 196 ovarian punctures were performed,followed by 234 embryo transfers (fresh or cryopreserved) which resulted in 43 deliveries. The cumulativelive birth rate was 40.4% per couple. Before IVF attempts, no clinical or paraclinical prognosticfactors between the two groups was observed. However, multivariate analysis showed several biological factors of good prognosis in course of treatment, such as a higher number of mature oocytes and better qualityembryos in “live birth” group.ConclusionsFor a couple, the chances of having a child following IVF unexplained infertility are 40.4%. However,no clinical characteristic enabled us to identify favourable or unfavourable prognosis factors before startingART. The prognostic factors identified during the attempt are interesting to advise the pursue of the IVF ornot