After analysis, the expression level of GCLC was related to tumor stage (stage I to stage IV and stage II to stage IV, p < 0.05, Figure 7C), patients’ gender (p < 0.001, Figure 7E), the location of the tumor in the lung parenchyma (p < 0.05, Figure 7F) and tobacco smoking history (p < 0.001, Figure 7G), but not to the patient’s age (p > 0.05, Figure 7D). Here, GCLC is linked to neoplasm.