Role of CYP1A1, CYP2D6, and NOS3 gene polymorphisms in idiopathic recurrent pregnancy loss in the Iranian Azeri population: A case-control study

Abstract

Background: It is estimated that 1-5% of couples suffer from recurrent pregnancy loss (RPL). Recent studies have shown the effects of gene polymorphisms in RPL.
 Objective: The aim of this study was to evaluate 3 gene polymorphisms including rs1048943 of CYP1A1, rs28371725 of CYP2D6, and rs7830 of NOS3 in idiopathic RPL to identify their association with RPL.
 Materials and Methods: Blood samples were collected from 136 women with at least 2 consecutive idiopathic miscarriages (case group) and 136 women with no history of miscarriage and at least one successful pregnancy (control group) from the Iranian Azeri population. This study was carried out between April 2018-April 2020. Amplification-refractory mutation system polymerase chain reaction was used for the rs7830, rs1048943 and rs28371725 polymorphisms in order to genotype each extracted genomic DNA sample. After that, Chi-square, Fisher’s exact test and logistic regression were used to investigate whether each of these polymorphisms is associated with RPL.
 Results: Among these polymorphisms, only rs1048943 of CYP1A1 showed a statistically significant association with RPL in the Iranian Azeri women studied.
 Conclusion: Our results suggest that CYP1A1 gene polymorphisms might be associated with a reduced risk of RPL. Further studies in other populations and in the same population with a larger sample size, as well as functional genomics analyses such as gene expression analyses or epigenetic studies are required to validate our results.
 Key words: Recurrent pregnancy loss, Polymorphism, CYP1A1, CYP2D6, NOS3.

Correlation Between Long non-coding RNA SOX2OT rs9839776 C>T Polymorphism and Unexplained Recurrent Miscarriages

“…Recurrent miscarriage can be caused by a variety of causes, including genetics, immunology disorders, endocrine abnormalities, unhealthy lifestyles, and reproductive organ anomalies. (Pereza et al, 2017) (Yousefian et al, 2022).…”

Association of CYP11A1 Polymorphisms with Recurrent Pregnancy Loss in the Female Population of Punjab

“…[ 11 ] Disruption of P450 side-chain cleavage cytochrome enzyme due to deleterious mutation in the CYP11A1 is thought to be incompatible with foetal survival due to impaired progesterone production by the foetoplacental unit. [ 12 ] The human foetus homozygous for a P450scc mutation will spontaneously abort at about 6–7 weeks when production of progesterone from the maternal corpus luteum wanes and the mutant placental system is unable to take over. [ 13 ]…”