文摘
The potentially functional polymorphism, rs31489, in the promoter region of cleft lip and palate transmembrane protein 1 (CLPTM1L) gene has been implicated in cancer risk. However, individual published studies showed inconclusive results. To obtain a more precise estimate of the association between CLPTM1L rs31489 and risk of lung cancer, we performed a meta-analysis. Summary odds ratios (ORs) and corresponding 95?% confidence intervals (CIs) were estimated using random-effects models. Ten individual case–control studies in eight publications with 20,680 cases and 28,330 controls were included. Overall, the variant genotypes were associated with a significantly increased lung cancer risk in different genetic models (CC + AC vs. AA: OR--.20, 95?% CI 1.12-.28, P-lt;-.001; CC vs. AC + AA: OR--.15, 95?% CI 1.07-.23, P-lt;-.001; CC vs. AA: OR--.28, 95?% CI 1.17-.41, P-lt;-.001; CC vs. AC: OR--.11, 95?% CI 1.05-.17, P-lt;-.001; C vs. A: OR--.12, 95?% CI 1.06-.18, P-lt;-.001). In the stratified analyses, the increased lung risk remained for the studies of Caucasian populations. In conclusion, this meta-analysis suggested that CLPTM1L rs31489 was a potential biomarker for lung cancer risk in Caucasians.