GPX1 and anemia (phenotype): In our study, we noted that elevation of GPX1 was found in patients with adverse prognostic features such as old age, female gender, bad performance status, non-epithelioid tumors, undifferentiated tumors, large tumors, lymph node infiltration, unresectable tumors, advanced clinical stage, the presence of anemia, increased platelet and white blood cell counts, and increased serum LDH level.