The most common serious adverse events in the < 10 g/dL baseline-Hb group (Q3W vs QW dosing) were pyrexia (6% of patients vs 6% of patients), febrile neutropenia (6% of patients vs 5% of patients), and anemia (3% of patients vs 5% of patients). This evidence concerns the gene GSTM1 and anemia (phenotype).