1. Department of Haematology, Guy’s and St. Thomas’ National Health Service (NHS) Foundation Trust, London, United Kingdom;
2. Haematopoietic Stem Cell Biology Laboratory and
3. Medical Research Council (MRC) Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom;
4. Oxford Molecular Diagnostics Centre, Oxford, United Kingdom;
5. National Institute for Health Research (NIHR) Biomedical Research Centre, Churchill Hospital, Oxford, United Kingdom;
6. Cancer Research UK Clinical Trials Unit, University of Birmingham, Birmingham, United Kingdom;
7. The Institute of Cancer Research, London, United Kingdom;
8. Wessex Regional Genetics Laboratory, Salisbury, United Kingdom; and
9. Department of Haematology, Queen’s University, Belfast, United Kingdom