Oxford Pre-cancerous Lymphoproliferative Disorders Study

Inclusion Criteria: 1. Patients diagnosed within the previous three years with one of the following: 1. High count monoclonal B-cell lymphocytosis (MBL) i.e. clonal B-cell population 0.5-4.9 109/L 2. Rai Stage 0-2/ Binet Stage A or Stage B Chronic Lymphocytic Leukaemia not meeting the IWCLL criteria for treatment 3. IgG or IgA Monoclonal Gammopathy of Uncertain Significance meeting one of the following criteria: i) IgA paraprotein \>10g/L or ii) IgG paraprotein \>15g/L or iii) IgA/IgG paraprotein below these cut-offs but kappa:lambda light chain ratio of * \<0.1 to \>3.0 (For OUH participants or sites with no pre-defined cut offs for high risk MGUS) or * within the cut off criteria of the local laboratory ranges for high risk MGUS iv) Patients not meeting the cut-offs defined in points i) to iii) but who are referred to secondary care e.g. due to general practitioner (GP) concern or for investigation of symptoms d. IgM Monoclonal Gammopathy of Uncertain Significance meeting one of the following criteria: i) IgM paraprotein \>10g/L or ii) IgM paraprotein \<10g/L and difference between the kappa and lambda light chains of \>50mg/L iii) Patients not meeting the cut-offs defined in point i) and ii) but who are referred to secondary care e.g. due to GP concern or investigation of symptoms e) Asymptomatic smouldering Waldenstrom's Macroglobulinaemia not meeting the criteria for treatment f) Smouldering myeloma not meeting the criteria for treatment 2. Eastern Cooperative Oncology Group (ECOG) performance status of 0,1 or 2 3. Age 16 years and over 4. Sign written informed consent 5. The patient is willing and able to comply with the protocol for the duration of the study and scheduled follow-up visits and examinations Exclusion Criteria: 1. Pregnant or breast-feeding women. Pregnant or breast-feeding women may be re-screened following delivery and/or cessation of breastfeeding, as appropriate 2. Previous chemotherapy or immunotherapy for any haematological cancers 3. Treatment with any other investigational agent, or participation in an interventional clinical trial within 28 days prior to enrolment. 4. Patients in cohort 2 or 3 on anticoagulation for a diagnosis of pulmonary embolus or deep vein thrombosis within the last 3 months or with a mechanical heart valve or any other condition causing a significant risk of thromboembolism. Participants who are anticoagulated for atrial fibrillation are eligible, but will be asked to interrupt anticoagulation 3 days prior to bone marrow examination 5. Other psychological, social or medical condition, physical examination finding or laboratory abnormality that the investigator considers would make the patient a poor study candidate or could interfere with protocol compliance or the interpretation of study results. 6. Any other malignancy that requires active surgical or chemotherapeutic Patients on long term hormone therapies (e.g. Tamoxifen) are permitted to enrol at the discretion of investigator, after considering the overall clinical context 7. Any significant concurrent medical resulting in life-expectancy (including but no limited to renal, Hepatic, haematological gastrointestinal, endocrine pulmonary neurological, cerebral or psychiatric disease 8. For cohort 3: Any contraindication for MRI- presence of any metallic foreign body, eGFR \<30 and allergy to gadolinium contrast