However, in hematology, if there are some specific recommendations for the use of ESAs in lymphoid pathology, there are none for myeloid disorders and in the context of autografts and allogeneic hematopoietic stem-cell transplantation (HSCT). Thus, the investigators are in particular interested in both indications: treatment of anemia in acute myeloid leukemia (AML) patients treated with chemotherapy, and the in patients receiving a myeloablative or a non-myeloablative conditioning before allogeneic HSCT, whatever type of donor and cell source.