title: A microRNA-related single nucleotide polymorphism of theXPO5gene is associated with survival of small cell lung cancer patients.
abstract: MicroRNA (miRNA)-related single nucleotide polymorphisms (miR-SNPs) in miRNA processing machinery genes affect cancer risk, treatment efficacy and patient prognosis. A miR-SNP of rs11077 located in the 3'UTR of miRNA processing machinery geneXPO5was examined in small cell lung cancer (SCLC) patients to evaluate its association with cancer survival. A total of 42 patients were enrolled in the present study and genotyped for rs11077 and survival was assessed using the Kaplan-Meier method, as well as univariate and multivariate analyses. The AA genotype of rs11077 was identified for its significant association with better survival time (P=0.023). In addition, rs11077 was found to associate independently with overall survival in SCLC patients by multivariate analysis (relative risk 2.469; 95% CI, 1.088-5.603; P=0.031). The findings of this study suggest that although miR-SNP studies for miRNA processing machinery genes are still at an early age, miR-SNPs have an impact on cancer survival. In conclusion, a miR-SNP in the 3'UTR region of theXPO5gene was identified as an independent prognostic marker for survival of advanced SCLC patients.
authors.affiliation: Departments of Gastroenterology and Hepatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China.
authors.forename: Zhanjun
authors.initials: Z
authors.lastname: Guo
authors.affiliation: Respiratory Medicine, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China.
authors.forename: Hongjing
authors.initials: H
authors.lastname: Wang
authors.affiliation: Respiratory Medicine, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China.
authors.forename: Yantao
authors.initials: Y
authors.lastname: Li
authors.affiliation: Respiratory Medicine, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China.
authors.forename: Bin
authors.initials: B
authors.lastname: Li
authors.affiliation: Respiratory Medicine, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China.
authors.forename: Cuiqiao
authors.initials: C
authors.lastname: Li
authors.affiliation: Respiratory Medicine, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China.
authors.forename: Cuimin
authors.initials: C
authors.lastname: Ding
keywords: exportin-5; miR-SNP; rs11077; small cell lung cancer; survival