ABSTRACT
BACKGROUND: Gastric cancer (GC) is the third most common cancer in India and is mediated by multiple genetic, epigenetic and environmental risk factors. A single nucleotide polymorphism rs3025058 at − 1171 of the stromelysin‑1 (matrix metalloproteinase [MMP]‑3) promoter is resulting due to insertion/deletion of adenine thought to have an impact on increasing the risk for tumor formation. AIM: This study is aimed to understand the role of stromelysin‑1 rs3025058 (−1171, 5A/6A) promoter polymorphism in the etiology of GC in Indian population. MATERIALS AND METHODS: Genomic DNA was isolated from blood samples of the GC patients and controls. The genotyping of stromelysin‑1 rs3025058 (−1171, 5A/6A) promoter polymorphism was carried out by amplification refractory mutation system‑polymerase chain reaction method followed by agarose gel electrophoresis. RESULTS: The frequency of 5A/5A, 5A/6A, and 6A/6A genotypes in GC patients were 7.69%, 76.92%, and 15.38%, while in controls were 5.31%, 86.73%, and7.96%, respectively. There was a significant difference in the distribution of 5A/6A genotype in patients compared to the controls (P < 0.05). CONCLUSION: This study showed an increased frequency of heterozygotes for stromelysin‑1 rs3025058 and thought to be involved in the etiology of GC.