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Lack of association between interleukin-22 gene polymorphisms and cancer risk: a case–control study and a meta-analysis

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International Journal of Clinical Oncology Aims and scope Submit manuscript

Abstract

Background

Interleukin-22 (IL22) has been implicated in inflammation and tumorigenesis. The association between IL22 gene polymorphisms and cancer risk has been widely explored. However, the limited sample sizes of previous studies may produce inadequate statistical power and conflicting results, which calls for further investigations. In this study, we recruited a total of 1490 cancer patients (480 liver cancer patients, 550 lung cancer patients, and 460 gastric cancer patients) and 800 normal controls to explore the associations between IL22 gene polymorphisms (rs1179251, rs2227485, rs2227511, and rs2227473) and cancer risk.

Method

The genotyping was performed with polymerase chain reaction–restriction fragment length polymorphism (PCR–RFLP) and Sanger sequencing.

Results

Our results showed that none of the four IL22 gene polymorphisms was associated with the risk of liver, lung or gastric cancer in Hubei Han Chinese population. To improve the statistical strength, a meta-analysis was further conducted. The results further confirmed our present findings and showed that rs1179251, rs2227485, and rs2227473 were not associated with cancer risk in total or stratified analysis.

Conclusion

Consequently, the rs1179251, rs2227485, rs2227511, and rs2227473 polymorphisms may not be associated with cancer risk. However, further investigations using larger samples in different ethnic populations are required.

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Funding

This work was supported by grants from the National Natural Science Foundation of China (81502427), the Natural Science Foundation of Hubei Province (2019CFB756), and the Fundamental Research Funds for the Central Universities (WUT: 2018IB023, 2019IB005 and 2019-HS-B1-13).

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Author notes

  1. Huan Wang and Chao Huang contributed equally to this work.

Authors and Affiliations

  1. Department of Biological Science and Technology, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China

    Huan Wang, Chao Huang, Yuxiao Liu, Puyu Yang, Yuxiao Liao & Bifeng Chen

  2. Center of Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China

    Xiuli Gu

  3. Department of Reproductive Genetics, Wuhan Tongji Reproductive Medicine Hospital, Wuhan, China

    Xiuli Gu

  4. Clinical Laboratory, Wuhan Xinzhou District People’s Hospital, Wuhan, China

    Xianhong Feng

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  1. Huan Wang
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Correspondence to Bifeng Chen.

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Wang, H., Huang, C., Liu, Y. et al. Lack of association between interleukin-22 gene polymorphisms and cancer risk: a case–control study and a meta-analysis. Int J Clin Oncol 25, 521–530 (2020). https://doi.org/10.1007/s10147-019-01595-8

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  • DOI: https://doi.org/10.1007/s10147-019-01595-8

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