Endometrial receptivityEndometrial receptivity analysis (ERA) Fresh embryo transfer (ET) Frozen embryo transfer (FET) Personalized embryo transfer (PET) Window of implantation (WOI)

This study was supported by Grand-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology (22591840). There were no conflicts of interest to declare.

The endometrium of infertile women with RIF-CE was characterized by increase in IgM, IgA, and IgG expression and predominance of IgG2 over other Ig subclasses.

No abstract

We report a successful first birth case from a patient with refractory recurrent implantation failure (RIF) by using endometrial receptivity array (ERA) test in Japan. The reproductive outcomes for the infertile patients with recurrent implantation failures may be improved by ERA test.