As the POLRMT expression level was associated with an unfavorable clinical outcome in patients and promoted NSCLC proliferation in cell lines and xenografts as shown in our previous study,10 tumor samples from TCGA were divided into two subgroups (high‐level and low‐level POLRMT expression) to dissect the underlying mechanism. The gene discussed is POLRMT; the disease is non-small cell lung carcinoma.