# XRCC1 and hOGG1 polymorphisms and endometrial carcinoma: A meta-analysis

## TL;DR

This study finds that specific DNA repair gene variations are linked to increased risk of endometrial cancer, especially in Caucasians.

## Contribution

The study identifies significant associations between XRCC1 and hOGG1 polymorphisms and endometrial carcinoma risk in Caucasians.

## Key findings

- XRCC1-Arg399Gln increases EC risk with ORs of 1.14 (dominant) and 1.59 (homozygous) in Caucasians.
- hOGG1-Ser326Cys is associated with EC risk, with ORs of 1.29 (heterozygote) and 1.31 (allele) in Caucasians.

## Abstract

Endometrial carcinoma’s (EC) etiology is complex and involves DNA repair gene polymorphisms like XRCC1-Arg399Gln and hOGG1-Ser326Cys, but their association with the disease is unclear. Following PRISMA, we conducted a systematic review and meta-analysis, collecting data from four databases. The studies needed to be population-based case–control studies examining the association between the named polymorphisms and EC. Quality was assessed with the Newcastle-Ottawa Scale. Pooled odds ratios (OR) and 95% confidence intervals (CI) were calculated, and subgroup analyses were conducted based on ethnicity. Seven studies were included. Both polymorphisms were found to significantly increase EC risk, particularly in Caucasians. XRCC1-Arg399Gln showed a dominant model OR of 1.14 (95% CI: 1.01–1.29) and a homozygous model OR of 1.59 (95% CI: 1.12–2.25). The heterozygote model OR for hOGG1-Ser326Cys was 1.29 (95% CI: 1.02–1.63), and the allele OR was 1.31 (95% CI: 1.07–1.60). XRCC1-Arg399Gln and hOGG1-Ser326Cys may increase EC risk, primarily in Caucasian women, emphasizing the role of DNA repair in disease susceptibility. More extensive studies are needed to validate these findings in diverse ethnicities and investigate other DNA repair gene polymorphisms.