When the Kaplan-Meier survival curves and the Cox regression analysis were used to assess the associations between the MMPs polymorphisms and survival time, NSCLC cases with the MMP2 -735 T/T genotype showed a lower survival time than the individuals with C/T or C/C genotypes (P = 0.035) (Figure 1). This evidence concerns the gene MMP2 and non-small cell lung carcinoma.