Abstract
Cytotoxic T lymphocyte antigen 4 (CTLA-4) genetic polymorphisms are implicated to be associated with susceptibility to bone sarcomas, but published studies have reported inconclusive results. The objective of our study was to conduct a meta-analysis investigating the associations between CTLA-4 gene polymorphisms and risk of bone sarcomas. PubMed and Embase databases were searched for all articles published up to June 2, 2013. Odds ratio (OR) with a 95 % confidence interval (95 % CI) was used to assess the association. Finally, 11 individual studies with a total of 2,951 cases with bone sarcomas and 3,396 controls were included in the meta-analysis. There were four studies on the CTLA-4 49G/A polymorphism, three studies on CTLA-4 318C/T polymorphism, two studies on CTLA-4 1661A/G polymorphism, and two studies on CTLA-4 60A/G polymorphism. Overall, CTLA-4 49G/A polymorphism was obviously associated with risk of bone sarcomas (A vs. G: OR = 1.36, 95 % CI = 1.20–1.54; AA vs. GG: OR = 2.24, 95 % CI = 1.67–2.99; AA vs. AG/GG: OR = 2.00, 95 % CI = 1.53–2.62; AA/GA vs. GG: OR = 1.35, 95 % CI = 1.14–1.61). However, CTLA-4 318C/T, 1661A/G, and 60A/G polymorphisms were not associated with risk of bone sarcomas. The current meta-analysis suggests that CTLA-4 49G/A polymorphism is obviously associated with risk of bone sarcomas. More studies are needed to further evaluate the associations between CTLA-4 polymorphisms and risk of bone sarcomas.
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Fan, C., Zhao, X. & Xu, Z. Associations between the cytotoxic T lymphocyte antigen 4 polymorphisms and risk of bone sarcomas. Tumor Biol. 36, 227–231 (2015). https://doi.org/10.1007/s13277-014-2621-6
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DOI: https://doi.org/10.1007/s13277-014-2621-6