The invention provides a biomarker and a medicament for recurrent
implantation failure. The biomarker comprises one or more of pathway related genes with the G0
annotation being GO: 0030286, GO: 0003777, GO: 0007018, GO: 0016887, GO: 0005874, GO: 0005858, GO: 0060285 and GO: 0005871, or / and the KEGG
annotation being hsa05016, and one or more of pathway related genes with the G0
annotation being GO: 0030286, GO: 0003777, GO: 0007018, GO: 0016887, GO: 0005874, GO: 0005858, GO: 0060285 and GO: The biomarkers are used for characterizing, diagnosing or classifying'subclinical hypopituitary hypofunction 'patients with repeated
implantation failure and predicting the therapeutic reactivity of the patients with repeated
implantation failure to luteal support therapy; the invention also provides a medicament for repeated implantation failure, a
lutein therapy medicament and a luteinizing activity related medicament, the
lutein therapy medicament is a medicament for regulating
estrogen and / or progestational
hormone, and the luteinizing activity related medicament is a medicament for regulating the
estrogen and / or progestational
hormone after
embryo implantation by applying
human chorionic gonadotropin. The repeated implantation failure object has the characteristics that (1)
clinical pregnancy is not observed in continuous three or more times of high-quality
embryo transplantation, (2) the
pathogenesis of RIF is indefinite, and (3) the blood
luteinizing hormone level is less than or equal to 5IU / L on the second day (D2 day) after
ovulation.