Evaluation of EDARADD, LPO and ACTN2 genes polymorphisms in children with dental caries compared to caries-free controls

Abstract

Dental caries is a complex condition that results from a combination of genetic and environmental factors. Several genes have been found to play a role in teeth development and have been associated with various dental traits. In this study, our objective was to examine the potential correlation between the ectodysplasin a receptor (EDAR)-associated via death domain (EDARADD), Lactoperoxidase (LPO) and Actinin Alpha 2 (ACTN2) gene polymorphisms and susceptibility to dental caries. The study included a total of 600 participants, comprising 300 individuals with dental caries and 300 caries-free controls. The genotyping of the EDARADD (rs79233817), LPO (rs8178275) and ACTN2 (rs114880747) gene polymorphisms was performed using the tetra-primer amplification refractory mutation system Polymerase chain reaction (PCR) method. Individuals with dental caries were found to have a significantly higher frequency of the A allele (minor allele) for rs79233817 compared to controls. The specific single nucleotide polymorphism (SNP) (rs79233817) was associated with an increased risk of dental caries (DC) in both the co-dominant and dominant genetic models (p-value < 0.05). In addition, the study's findings revealed a significant association between the rs114880747 SNP and susceptibility to dental caries (p-value < 0.05). A higher frequency of the A allele (minor allele) of rs114880747 was observed in patients compared to the healthy controls. It is also worth mentioning that there was no association between rs8178275 susceptibility to dental caries (p-value > 0.05). It can be inferred that the EDARADD gene polymorphism (rs79233817) and ACTN2 gene polymorphism (rs114880747) potentially play a role in the genetic susceptibility to dental caries. To validate and delve deeper into these findings, it is necessary to conduct additional studies with larger sample sizes in diverse populations. This will help to establish the robustness of the results and further investigate the underlying mechanisms involved.

Keywords: ACTN2; Dental caries; Diagnosis and treatment planning; EDARADD; Genetics; LPO.