GSTM1 and anemia (phenotype): The prevalence of anemia has been reported as 68% in women and 77% in men receiving palliative care (PC) when WHO criteria (hemoglobin, Hb <120 g/L in women and <130 g/L in men) were applied.1 In a retrospective analysis of hematologic values of 2416 patients in British PC services, the prevalence of moderate (Hb 80–110 g/L) and severe (Hb <80 g/L) anemia was 35% and 3%, respectively.2 Multiple factors contribute to anemia including stage of disease, bleeding, and vitamin deficiencies in PC patients.