Background: The Transforming growth factor-β1 (TGFβ1) 869C/T polymorphism was associated with radiation pneumonitis (RP) susceptibility. However, the results remained controversial. Thus, a meta-analysis was conducted.
Methods: Relevant studies were systematically searched by using the NCBI, Medline, Web of Science and Embase databases. Summary odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were estimated using random-effects models.
Results: There was a significant association between TGFβ1 869C/T polymorphism and RP susceptibility (OR=1.77; 95% CI, 1.27-2.47; P=0.0007).
Conclusion: This study suggested that TGFβ1 869C/T polymorphism was a risk factor of RP.
Keywords: Radiation pneumonitis; meta-analysis; polymorphism; transforming growth factor.