Journal
EUROPEAN JOURNAL OF CANCER PREVENTION
Volume 22, Issue 4, Pages 328-334Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/CEJ.0b013e32835b6a21
Keywords
hepatitis B virus; meta-analysis; pancreatic cancer; risk
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ObjectiveWhether hepatitis B virus (HBV) infection increases the risk of pancreatic cancer (PaC) is controversial. We carried out a meta-analysis to evaluate the association between HBV status and the risk of PaC.MethodsPubMed, Embase, and the China National Knowledge Infrastructure were searched from their inception through April 2012 for case-control and cohort studies that have reported an association between HBV status and the risk of PaC. The reference lists of pertinent publications were also reviewed for potential studies. Methodological quality was assessed using the Newcastle-Ottawa Quality Assessment Scale. A random-effects model was used to summarize odd ratios (ORs) and 95% confidence intervals (CIs).ResultsWe included seven case-control studies and three cohort studies, involving 5883 PaC cases. The summary OR of developing PaC was 1.22 (95% CI: 0.90-1.67) for individuals who were HBV surface antigen (HBsAg)-positive. Compared with the individuals who were never exposed to HBV infection, the summary OR of the risk of PaC was 1.60 (95% CI: 1.26-2.05) for chronic or inactive HBsAg carriers (HBsAg-positive) and 1.76 (95% CI: 1.05-2.93) for anti-HBc-positive but anti-HBs-negative individuals.ConclusionInactive HBsAg carrier status and possible occult HBV infection may increase the risk of PaC. Large population-based multicenter prospective studies are required to further confirm this finding.
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