However, individuals with the MMP3 -1171 5A/5A or the MMP9 -1562T/T genotypes did not show a statistically significant association with survival time either in NSCLC patients (adjusted HR = 0.92; 95% CI: 0.72-1.18 and adjusted HR = 0.85; 95% CI: 0.32-2.30, respectively) (Table 5) or in SCLC patients (adjusted HR = 0.67; 95% CI: 0.35-1.27 and adjusted HR = 0.97; 95% CI: 0.29-3.25, respectively) (Table 6). This evidence concerns the gene MMP9 and small cell lung carcinoma.