The statistical correlations analysis among Nrf2, PRDX5 and NQO1 expressions in NSCLC samples showed that the level of PRDX5 expression in NCSLC tissues correlated with Nrf2 and NQO1 expression level very weakly (Figure 6B), while by subgroup of NSCLC patients with clinical TNM stage III-IV comparison, we found strong correlation among the three mRNA levels (Figure 6C). The gene discussed is NQO1; the disease is non-small cell lung carcinoma.