SLC39A4 and non-small cell lung carcinoma: Considering the confirmed role of ZIP4 in the carcinogenesis of pancreatic, liver cancer, and glioblastoma multiform (GBM) [22, 23, 28–30], we further conducted a similar investigation with expanded samples of 36 paired specimens of tumor and surrounding benign tissues from a separate cohorts of patients who had non-small cell lung cancer.