Laboratory investigations showed a normal leukocyte count (5.6 × 103/μL), lymphopenia (500/μL), normocytic anemia (hemoglobin 8.5 g/dL), thrombocytopenia (101 × 103/μL), hypoalbuminemia (3.1 g/dL), iron deficiency reflected by low serum iron (4.0 μmol/L), reduced transferrin saturation (10.54%), and decreased transferrin levels (151.0 mg/dL). Here, TF is linked to anemia (phenotype).