Finally, a recent study of 561 NSCLC patients in a Chinese population analysed the effects of 14 SNPs in MMPs genes in the overall survival of patients with NSCLC and found that the MMP2 -735 T/T and MMP3 -1171 5A/5A genotypes did not decrease survival time. The gene discussed is MMP2; the disease is non-small cell lung carcinoma.