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Potentially Functional Variants of ATG16L2 Predict Radiation Pneumonitis and Outcomes in Patients with Non-Small Cell Lung Cancer after Definitive Radiotherapy.

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Date
2018-05
Authors
Wen, Juyi
Liu, Hongliang
Wang, Lili
Wang, Xiaomeng
Gu, Ning
Liu, Zhensheng
Xu, Ting
Gomez, Daniel R
Komaki, Ritsuko
Liao, Zhongxing
Wei, Qingyi
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Abstract
INTRODUCTION:Autophagy not only plays an important role in the progression of cancer but is also involved in tissue inflammatory response. However, few published studies have investigated associations between functional genetic variants of autophagy-related genes and radiation pneumonitis (RP) as well as clinical outcomes in patients with NSCLC after definitive radiotherapy. METHODS:We genotyped nine potentially functional single-nucleotide polymorphisms (SNPs) in four autophagy-related genes (autophagy related 2B gene [ATG2B], autophagy related 10 gene [ATG10], autophagy related 12 gene [ATG12], and autophagy related 16 like 2 gene [ATG16L2]) in 393 North American patients with NSCLC treated by definitive radiotherapy and assessed their associations with RP, local recurrence-free survival (LRFS), progression-free survival (PFS), and overall survival (OS) in multivariable Cox proportional hazard regression analyses. RESULTS:We found that patients with the ATG16L2 rs10898880 CC variant genotype had a better LRFS, PFS, and OS (adjusted hazard ratio = 0.59, 0.64, and 0.64; 95% confidence interval: 0.45-0.79, 0.48-0.84, and 0.48-0.86; p = 0.0004, 0.002, and 0.003, respectively), but a greater risk for development of severe RP (adjusted hazard ratio = 1.80, 95% confidence interval: 1.04-3.12, p = 0.037) than did patients with AA/AC genotypes. Further functional analyses suggested that the ATG16L2 rs10898880 C variant allele modulated expression of the ATG16L2 gene. CONCLUSION:This is the first report that one potentially functional SNP rs10898880 in ATG16L2 may be a predictor of RP, LRFS, PFS, and OS in patients with NSCLC after definitive radiotherapy. Additional larger, prospective studies are needed to confirm these findings.
Type
Journal article
Subject
Humans
Carcinoma, Non-Small-Cell Lung
Lung Neoplasms
Radiation Pneumonitis
Genetic Predisposition to Disease
Neoplasm Staging
Polymorphism, Single Nucleotide
Adult
Aged
Aged, 80 and over
Middle Aged
Female
Male
Autophagy-Related Proteins
Permalink
https://hdl.handle.net/10161/18511
Published Version (Please cite this version)
10.1016/j.jtho.2018.01.028
Publication Info
Wen, Juyi; Liu, Hongliang; Wang, Lili; Wang, Xiaomeng; Gu, Ning; Liu, Zhensheng; ... Wei, Qingyi (2018). Potentially Functional Variants of ATG16L2 Predict Radiation Pneumonitis and Outcomes in Patients with Non-Small Cell Lung Cancer after Definitive Radiotherapy. Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer, 13(5). pp. 660-675. 10.1016/j.jtho.2018.01.028. Retrieved from https://hdl.handle.net/10161/18511.
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Scholars@Duke

Zhensheng Liu

Assistant Professor of Medicine
Wei

Qingyi Wei

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
Alphabetical list of authors with Scholars@Duke profiles.
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