Polymorphism in XRCC1, XRCC2, XRCC3 Genes and Risk of Gastrointestinal Cancer: A Case-Control Study from South-Western Maharashtra
DOI:
https://doi.org/10.37506/ijphrd.v11i3.1495Keywords:
Gastrointestinal cancer, PCR-RFLP, Genetic Polymorphism.Abstract
Background: Alarming increased incidence of gastrointestinal (GI) cancer in rural parts of Maharashtra
intended us to elucidate association of polymorphism in DNA repair genes with GI cancer risk.
Objective: Hospital based case-control study designed to investigate association of polymorphisms in
XRCC1, XRCC2, XRCC3 genes with risk of GI in Maharashtrian population.
Method: PCR-RFLP method was used to genotype polymorphisms in exon 6, 9 and 10 of XRCC1, exon 3
of XRCC2 and exon 7 of XRCC3 gene from 200 GI cancer patients and 300 controls.
Results: The genotypic frequency of variant allele His/His of cd280 of XRCC1 showed association with
increased risk of GI cancer as compared to Arg/Arg genotype in rural population (OR = 14.04; 95% CI: 9.05-
21.78, p<0.0001). The results of XRCC2 interpreted negative association (OR = 0.27; 95% CI: 0.10–0.73,
p=0.006) and no association of XRCC3 (OR = 0.20; 95% CI: 0.08–0.53, p=0.004) with GI cancer.
Conclusion: The findings from this study revealed possible association of XRCC1 codon 280 polymorphism
with increased risk of GI carcinogenesis in rural population of Maharashtra.
