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BioMed Research International
Volume 2016, Article ID 3417976, 14 pages
http://dx.doi.org/10.1155/2016/3417976
Research Article

HBV Infection Status and the Risk of Cholangiocarcinoma in Asia: A Meta-Analysis

1Department of Infectious Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Yanjiang Road 151, Guangzhou 510120, China
2Department of Laboratory Medicine, Dongguan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Songshan Lake Avenue 22, Dongcheng District, Dongguan 523000, China

Received 15 March 2016; Accepted 6 June 2016

Academic Editor: Shinichi Aishima

Copyright © 2016 Hao Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. The inconsistent finding was between hepatitis B virus (HBV) infections and cholangiocarcinoma (CCA). This meta-analysis is to explore this relationship in Asia. Methods. A literature search was performed using PubMed, Web of Science, and Cochrane Library to October 30, 2015. Pooled incidence rate and OR with 95% CI were calculated using STATA 11.0. Results. Thirty-nine studies were included. The pooled incidence rate of CCA patients with HBV infection was 31% (95% CI 22%–39%). The pooled OR showed increased risk of CCA incidence with HBV infection (OR = 2.72, 95% CI 1.90–3.88), especially in ICC (OR = 3.184, 95% CI 2.356–4.302), while it showed no risk in ECC (OR = 1.407, 95% CI 0.925–2.141). Also, the pooled OR showed increased risk of ICC and ECC incidence (OR = 6.857, 95% CI 4.421–10.633 and OR = 1.740, 95% CI 1.260–2.404) in patients with HBsAg+/HBcAb+. The pooled OR showed increased risk of ICC incidence (OR = 1.410, 95% CI 1.095–1.816) in patients with HBsAg−/HBcAb+. Conclusion. It is suggested that HBV infection is associated with an increased risk of CCA in Asia. Two HBV infection models (HBsAg+/HBcAb+ and HBsAg−/HBcAb+) increase the risk of CCA, and patients with HBsAg−/HBcAb+ also had a risk of ICC. This trial is registered with PROSPERO CRD42015029264.