AGR2 and non-small cell lung carcinoma: Furthermore, in the TCGA and GTEx databases, AGR2 mRNA levels in NSCLC were significantly upregulated compared with those in normal tissues (P < 0.05, Figure 5B), and AGR2 mRNA levels were negatively correlated with QKI-6 mRNA levels (n = 513, r = −0.32, 95% CI = −0.39 to −0.23, P < 0.001, Spearman’s test, Figure 5C).