Mannose-binding lectin two gene polymorphisms and tuberculosis susceptibility in Chinese population: A meta-analysis

Numerous studies have been done to explore the association between mannose-binding lectin two (MBL2) gene polymorphisms and the risk of tuberculosis (TB). However, the results are inconsistent. We performed a meta-analysis to investigate whether polymorphisms in the MBL2 gene were associated with TB risk. Databases including PubMed, Medline, Chinese Biomedicine Database, China National Knowledge Infrastructure, Wanfang Database, and Weipu Database were searched to find relevant articles published up to 2 October, 2012. Odds ratio (OR) with 95% confidence interval (CI) was used to evaluate the strength of association. All statistical tests were performed by using Revman 5.1 software and STATA 11.0 software. Six case-control studies including 1106 cases and 1190 controls were accepted in the meta-analysis. The results indicated that individuals carrying the MBL2 codon 54 B allele may have an increased risk of TB as compared with AA homozygotes (BB+AB vs. AA: OR=1.52, 95% CI: 1.22-1.88), whereas MBL2 +4 P/Q was possibly not associated with TB susceptibility in Chinese population.