Association between polymorphism of has-miR-125 (rs12976445) and susceptibility to idiopathic recurrent pregnancy loss in Iranian women

Many new studies related to peri-implantation period and maintenance of pregnancy suggest that microRNAs have fundamentally role in regulating critical pathways in early pregnancy loss and implantation failure. This study was performed with aim to evaluate the possible association between has-miR-125 T>C polymorphism and susceptibility to idiopathic recurrent pregnancy loss (RPL).

In this case-control study, 116 females with at least two or more recurrent pregnancy loss and 89 healthy women with a history of two successful pregnancies and without a history of miscarriage were evaluated. DNA molecule was extracted by RGDE method and genotyping was performed by ARMS Tetra method. Data were analyzed by SPSS software (version 22) and Chi-squared test. P<0.05 was considered statistically significant.

The frequency of TT, TC and CC genotypes of rs12976445 polymorphism were 50.86%, 42.25% and 6.89% and in women with RPL and were 58.43%, 39.33% and 2.24% in healthy women. There was no significant relationship between rs12976445 polymorphism and recurrent pregnancy loss (P=0.238).

No significant association was found between rs12976445 polymorphism and RPL.