Association of Long Noncoding Polymorphisms with the Risk of Esophagogastric Junction Adenocarcinoma: A Three-Center Study of 1063 Cases and 1677 Controls.

Increasing evidence suggested that long noncoding () variants may be involved in the progression of various cancers. However, the association of the polymorphisms with the risk for esophagogastric junction adenocarcinoma (EGJA) is still unknown. In this case-control study, we selected two cancer-related polymorphisms (rs944289 C > T and rs7990916 C>T), and recruited a total of 1063 EGJA patients and 1677 noncancer controls to determine whether the rs944289 C > T and rs7990916 C > T polymorphisms could influence EGJA susceptibility and lymph node status. And SNPscan™ genotyping assay was applied to test the genotypes of the mentioned two variants. We found no statistically significant differences in the distribution of rs944289 C > T and rs7990916 C > T polymorphisms between EGJA patients and healthy controls. Similar negative findings were also revealed in the correlation of those polymorphisms with different lymph node status. However, after adjustment by multiple environmental factors, including gender, age, drinking, and smoking consumption, the stratified analyses showed that the rs944289 C > T variant was significantly related with the risk of EGJA in <60 years populations [CT vs. CC: adjusted odds ratio (OR) = 0.75, 95% confidence interval (CI) = 0.58-0.98,  = 0.032] and ever smoking populations (CT/CC vs. TT: adjusted OR = 1.65, 95% CI = 1.11-2.46,  = 0.013). In short, this population-based study highlights that rs944289 C > T polymorphism may be associated with genetic susceptibility to EGJA in the <60 years and ever smoking populations.