MMP13 and non-small cell lung carcinoma: In present, no difference were founded between MMP13 polymorphisms between NSCLC and controls (p > 0.05), The frequencies of the G allele of MMP13 -77A/G were significantly different between cases and controls (p < 0.05), and the MMP13 AA genotype might be a marker of decreased genotype susceptibility to NSCLC compared with the GG genotype (p < 0.05).