PTEN and non-small cell lung carcinoma: More interestingly, as shown in Fig. 6i, 80% of samples with low PTEN expression exhibited high levels of miR-374a (39/49 cases), whereas 36% of samples with high PTEN expression had low expression of miR-374a (10/28 cases) in advanced NSCLC specimens (Stages III and IV) (P = 0.0117).