Novel genetic variants in KIF16B and NEDD4L in the endosome-related genes are associated with non-small cell lung cancer survival.
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The endosome is a membrane-bound organ inside most eukaryotic cells, playing an important role in adaptive immunity by delivering endocytosed antigens to both MHC class I and II pathways. Here, by analyzing two published genome-wide association studies (GWASs), we evaluated associations between genetic variants in the endosome-related gene-set and survival of patients with non-small cell lung cancer (NSCLC). The discovery included 44,112 (3,478 genotyped and 40,634 imputed) single-nucleotide polymorphisms (SNPs) in 220 genes in a single locus analysis for their associations with survival of 1,185 NSCLC patients from the Prostate, Lung, Colorectal, and Ovarian (PLCO) Cancer Screening Trial. After validation of the 821 survival-associated significant SNPs in additional 984 NSCLC patients from the Harvard Lung Cancer Susceptibility study, 14 SNPs remained significant. The final multivariate stepwise Cox proportional hazards regression model in the PLCO datasets identified three potentially functional and independent SNPs (KIF16B rs1555195 C>T, NEDD4L rs11660748 A>G and rs73440898 A>G) with an adjusted hazards ratio (HR) of 0.86 [95% confidence interval (CI)=0.79-0.94, P=0.0007], 1.31 (1.16-1.47, P=6.0×10-5 ) and 1.27 (1.12-1.44, P=0.0001) for overall survival (OS), respectively. Combined analysis of the adverse genotypes of these three SNPs revealed a trend in the genotype-survival association (Ptrend <0.0001 for OS and Ptrend <0.0001 for disease-specific survival). Furthermore, the survival-associated KIF16B rs1555195T allele was significantly associated with decreased mRNA expression levels of KIF16B in both lung tissues and blood cells. Therefore, genetic variants of the endosome-related genes may be biomarker for NSCLC survival, possibly through modulating the expression of corresponding genes. This article is protected by copyright. All rights reserved.
SubjectNon-small cell lung cancer
genome-wide association study
Published Version (Please cite this version)10.1002/ijc.32739
Publication InfoLuo, Sheng; Wei, Qingyi; Glass, Carolyn; Yang, Sen; Tang, Dongfang; Zhao, Yu Chen; ... Wang, Qiming (2019). Novel genetic variants in KIF16B and NEDD4L in the endosome-related genes are associated with non-small cell lung cancer survival. International journal of cancer. 10.1002/ijc.32739. Retrieved from https://hdl.handle.net/10161/19676.
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Assistant Professor of Pathology
Professor of Biostatistics & Bioinformatics
Professor in Population Health Sciences
Qingyi Wei, MD, PhD, Professor in the Department of Medicine, is Associate Director for Cancer Control and Population Sciences, Co-leader of CCPS and Co-leader of Epidemiology and Population Genomics (Focus Area 1). He is a professor of Medicine and an internationally recognized epidemiologist focused on the molecular and genetic epidemiology of head and neck cancers, lung cancer, and melanoma. His research focuses on biomarkers and genetic determinants for the DNA repair deficient phenotype and
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