GSTM1 and anemia: Moreover, patients with neoplasia were older (median age 74 vs. 47 years), with poorer glycemic control (median HbA1c 9.4% vs. 7.8%), higher body weight (median 92.5 kg vs. 81 kg) and BMI (median 31.5 vs. 28.8 kg/m2), with altered renal function (median eGFR 54 vs. 91 mL/min), anemia (median Hb 12.5 vs. 14.1 g/dL), and lower concentrations of iron (58 vs. 68.3 μg/dL) compared to the patients without neoplasia.