Association of long noncoding RNA MALAT1 polymorphisms with gastric cancer risk in Korean individuals.

ABSTRACT

BACKGROUND: Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) drives tumorigenesis of various human cancers. However, the association between MALAT1 variants and gastric cancer (GC) risk is unknown. We performed a case-control study to evaluate the possible association between rs619586 and rs3200401 SNPs in MALAT and GC risk. METHODS: Samples from 458 patients with GC and 381 controls were genotyped using the TaqMan genotyping assay. RESULTS: In stratified analyses, we observed that rs3200401 CT in the codominant model and CT+TT in the dominant model were associated with increased GC risk in male patients (CT odds ratio [OR] = 1.81, 95% confidence interval [CI] = 1.09-3.01, p = 0.022; CT+TT OR = 1.74, 95% CI = 1.07-2.83, p = 0.026), and the differentiated (CT OR =1.79, 95% CI = 1.18-2.73, p = 0.007; CT+TT OR = 1.76, 95% CI = 1.17-2.64, p = 0.007), and intestinal (CT OR = 1.67, 95% CI = 1.11-2.49, p = 0.013; CT+TT OR = 1.68, 95% CI = 1.14-2.47, p = 0.009) GC subgroups. CONCLUSION: MALAT1 rs3200401 increases GC susceptibility and might affect GC development. Further studies are needed to validate our results in large populations and different ethnic groups.