1. Leeds Institute of Rheumatic and Musculoskeletal Medicine and
2. Leeds Institute of Medical Research, University of Leeds, Leeds, United Kingdom;
3. National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD;
4. Haematological Malignancy Diagnostic Service, St James’s University Hospital, Leeds, United Kingdom;
5. National Human Genome Research Institute, National Institutes of Health, Bethesda, MD;
6. Department of Haematology, Leeds Teaching Hospitals, Leeds, United Kingdom;
7. Department of Rheumatology, Hull University Teaching Hospitals, Hull, United Kingdom;
8. Department of Rheumatology, York Teaching Hospital NHS Foundation Trust, York, United Kingdom; and
9. National Institute for Health Research–Leeds Biomedical Research Centre, University of Leeds, Leeds, United Kingdom