GSTM1 and anemia (phenotype): In the multivariate analysis, higher Hb levels remained significantly associated with lower rates of leukocytopenia (HR 0.74 [0.60–0.89], p = 0.002) and thrombocytopenia (HR 0.80 [0.65–0.98], p = 0.033), while kidney dysfunction remained significantly associated with anemia (HR 2.46 [1.35–4.30], p = 0.002).