Before KTx, the prevalence of anemia was higher in the LVH group than in the non-LVH group (67.9% vs. 90.7%, p < 0.01), with a lower level of Hb (106.75 ± 17.54 g/L vs. 92.26 ± 20.23 g/L, p < 0.05). This evidence concerns the gene GSTM1 and anemia (phenotype).