MMP11 and gastric adenocarcinoma: The serum levels of MMP-11 protein were significantly higher in patients with advanced gastric adenocarcinoma (n = 86; median = 41.74 ng/ml; range from 10.43 to 97.37 ng/ml) than in controls (n = 20; median = 6.74 ng/ml; range from 5.71 to 8.56 ng/ml; p < 0.001).