Detection of Kisspeptins and miRNAs in Patients With Non-viable Pregnancy

"Blood samples:~Blood samples will be collected for the determination of the levels of various biomarkers (Kisspeptins and miRNAs), which are molecules that regulate the expression of proteins and can serve as markers for predicting pregnancy viability. Additionally, after biochemical or week 10 of clinical pregnancy confirmation, blood samples will be collected for KIR and HLA-C typing, Oral glucose tolerance test (OGTT) and analysis of the levels of miRNAs related with insulin resistance, miR-424-5p and miR-15b.~Uterine biopsy (only in patients with BP):~Uterine biopsy samples will be collected also after biochemical pregnancy confirmation for the determination of the levels of miRNAs related with insulin resistance, miR-424-5p and miR-15b."