Association of HOTAIR polymorphisms rs4759314 and rs920778 with cancer susceptibility on the basis of ethnicity and cancer type
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Qichao Qi1,*, Jiwei Wang1,*, Bin Huang1, Anjing Chen1, Gang Li1, Xingang Li1, Jian Wang1,2
1Department of Neurosurgery, Qilu Hospital of Shandong University and Brain Science Research Institute, Shandong University, Jinan, 250012, China
2Department of Biomedicine, University of Bergen, Bergen, 5009, Norway
*These authors have contributed equally to this work
Xingang Li, email: firstname.lastname@example.org
Jian Wang, email: email@example.com
Keywords: cancer, genetic susceptibility, HOTAIR, polymorphism
Received: January 26, 2016 Accepted: May 02, 2016 Published: May 26, 2016
Polymorphisms in the HOX transcript antisense intergenic RNA (HOTAIR) have been recently associated with susceptibility to different cancers. Here, a meta-analysis was performed to derive a more precise estimation of the involvement of HOTAIR polymorphisms in cancer development. Data from cases (n = 7,772) and controls (n = 9,075) were extracted from eligible studies (n = 10) identified in a comprehensive literature search conducted in PubMed, Embase, and the Web of Science databases through January 20, 2016. Overall, association between polymorphism rs920778 and increased cancer risk was significant in allele contrast (odds ratio (OR) = 1.239, 95% confidence interval (CI) = 1.032 - 1.487) and recessive models (OR = 1.614, 95% CI = 1.082 - 2.406). In subgroup analysis based on ethnicity, a significant association between polymorphism rs920778 and cancer susceptibility was observed in Asians under all models, but was most compelling under recessive (OR = 2.128, 95% CI = 1.417 - 3.197) and homozygous models (OR = 2.764, 95% CI = 2.221 - 3.440). Subgroup analysis by cancer type revealed a significant association between polymorphism rs4759314 and susceptibility to gastric cancer in allele contrast (OR = 1.262, 95% CI = 1.073 - 1.486), dominant (OR = 1.280, 95% CI = 1.060 - 1.547), and heterozygous models (OR = 1.288, 95% CI = 1.057 - 1.570). In conclusion, the results indicated that HOTAIR polymorphism rs920778 was more generally associated with cancer risk, particularly in Asians, while rs4759314 was a risk factor for gastric cancer.
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