Changes in haemoglobin over the course of the treatment in a patient with chronic myeloid leukaemia who developed pure red cell aplasia secondary to imatinib and nilotinib. Changes in haemoglobin over the course of the treatment in a patient with chronic myeloid leukaemia who developed pure red cell aplasia secondary to imatinib and nilotinib. The effect of each intervention in the haemoglobin count is depicted. Hb, haemoglobin. Bishesh Sharma Poudyal et al. ESMO Open 2016;1:e000058 Copyright © European Society for Medical Oncology. All rights reserved.