MMP1 and gastric cancer: Contradictory to MMP-1.3 polymorphism, patients carrying a combination of TC and CC genotypes gave protection against regional lymph node metastasis (p = 0.026, OR = 0.34, CI = 0.13–0.88) in addition to distant metastasis (p = 0.061, OR = 0.49, CI = 0.24–1.03) of gastric cancer (Table 3).