TCN2 and non-small cell lung carcinoma: The IVW method provided consistent results for LTB4R (OR 0.667, 95% CI 0.557–0.799), LTBP4 (OR 1.440, 95% CI 1.236–1.679), MPI (OR 0.809, 95% CI 0.735–0.889), and TCN2 (OR 1.154, 95% CI 1.081–1.231), all of which showed significant associations with NSCLC risk post-adjustment for multiple testing (Table 1).