After receiving immunotherapy for 12 ± 3 months, hemoglobin, SI, Tf, TIBC, TS, and ferritin levels, as well as the iron deficiency rate of the 37 patients were all comparable (p ≥ 0.05) with those of the same group patients before initiation of immunotherapy (Table 4, Figures 2C,D). Here, TF is linked to Iron deficiency anemia.