PTEN and metastatic malignant neoplasm in the lymph nodes: Considering the small sample size, there was no significant association between miR‐4286 expression in NSCLC tissues and clinical characteristics including age, gender, smoking status, clinical stage, histology, and lymph node metastasis (Table 1).However, after further analysis, we found that 21 NSCLC tissues (67.74%) with a high miR‐4286 level also presented low expression of PTEN mRNA (Figure 7C).