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Association between single nucleotide polymorphisms of NOTCH signaling pathway-related genes and the prognosis of NSCLC

Authors Xu Q, Lin D, Li X, Xiao R, Liu Z, Xiong W, Cai L, He F

Received 11 December 2018

Accepted for publication 12 June 2019

Published 24 July 2019 Volume 2019:11 Pages 6895—6905


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Dr Rituraj Purohit

Qiuping Xu,1,2 Danhua Lin,1 Xu Li,3 Rendong Xiao,3 Zhiqiang Liu,4 Weimin Xiong,2 Lin Cai,2 Fei He2,5

1Medical Department, The Affiliated Hospital of Putian University, Putian, Fujian, People’s Republic of China; 2Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou, Fujian, People’s Republic of China; 3Department of Thoracic Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, People’s Republic of China; 4The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, Fujian, People’s Republic of China; 5Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, Fujian, People’s Republic of China

Objective: In this study, we analyzed the association between genetic variants of genes in the NOTCH signaling pathway and the prognosis of non-small-cell lung cancer (NSCLC) in the Chinese population. We also explored the interaction between genetic and epidemiological factors for the test group.
Methods: We performed genotyping of 987 NSCLC patients. Then, we used Cox proportional hazard models to analyze the associations between single-nucleotide polymorphisms (SNPs) and the prognosis of NSCLC. We employed Stata software to test the heterogeneity of associations between subgroups, and we analyzed the additive and multiplicative interactions between SNPs and epidemiologic factors.
Results: This work revealed the important prognostic and predictive value of rs915894 in the NOTCH4 gene, which may be regarded as a promising prognosis biomarker of NSCLC. Cox regression analysis indicated that the C allele of rs915894 is associated with longer survival and decreased risk of death in NSCLC (codominant model: adjusted HR =0.83, 95% CI =0.70–0.99; dominant model: adjusted HR =0.83, 95% CI =0.71–0.98). Additional stepwise regression analysis suggested that this SNP is an independently favorable factor for the prognosis of NSCLC (dominant model: adjusted HR =0.85, 95% CI =0.72–0.99). This protective effect is more pronounced for patients who are not smokers, have a history of other lung diseases, or have a family history of cancer. We also detected statistically significant additive and multiplicative interactions between rs915894 and smoking, rs915894 and history of lung diseases, and rs915894 and family history of cancer, which all affect NSCLC survival.
Conclusion: This study demonstrated that rs915894 in NOTCH4 may be a genetic marker for NSCLC prognosis in the Chinese population and that rs915894 may have an interactive relationship with epidemiologic factors.

Keywords: NOTCH signaling pathway, single-nucleotide polymorphism, non-small-cell lung cancer, interaction, prognosis

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