MMP8 and cancer: The MMP-8 C-799 T variant is not associated with the susceptibility of cancer under all genetic models (allele contrast: OR = 0.98, 95% CI = 0.92–1.04, Pheterogeneity = 0.068, P = 0.429; TT vs. CC: OR = 0.94, 95% CI = 0.82–1.07, Pheterogeneity = 0.097, P = 0.362; heterozygote comparison: OR = 1.00, 95% CI = 0.92–1.09, Pheterogeneity = 0.193, P = 0.992; TT + TC vs. CC: OR = 0.98, 95% CI = 0.90–1.07, Pheterogeneity = 0.086, P = 0.666; recessive model: OR = 0.94, 95% CI = 0.83–1.07, Pheterogeneity = 0.249, P = 0.348).