The results suggested that IL-6 rs1800796 polymorphism was not associated with risk of lung cancer under homogeneous co-dominant model (OR = 1.06, 95%CI = 0.73-1.54, Figure 2), heterogeneous co-dominant model (OR = 1.24, 95%CI = 0.96-1.60, Figure 3), dominant model (OR = 1.23, 95%CI = 0.95-1.58, Figure 4), recessive model (OR = 0.96, 95%CI = 0.70-1.32, Figure 5) and allelic model (OR = 1.15, 95%CI = 0.95-1.41, Figure 6). The gene discussed is IL6; the disease is lung cancer.