UGT1A1 and Decreased total neutrophil count: UGT1A1*6/*6 homozygous subjects had a higher incidence of grade ≥ 3 neutropenia (100%) and anemia (66.7%) in comparison with wild‐type UGT1A1 subjects (52.6% and 10.5%, respectively) – this data was only mentioned in the discussion.25