Oxford Pre-cancerous Lymphoproliferative Disorders Study

The purpose of the study is to monitor patients with early stage lymphoproliferative disorders not meeting criteria for treatment, including early stage Chronic Lymphocytic Leukaemia (CLL), Monoclonal B-cell Lymphocytosis (MBL), Monoclonal Gammopathy of Uncertain Significance (MGUS), asymptomatic Waldenstroms Macroglobulinaemia (WM) and Smouldering Myeloma (SM). Each of these disorders has a pre-cancerous phase when abnormalities can be seen in the blood, however treatment may not be required. A minority of people with early stage lymphoproliferative disorders will go on to need treatment for blood or bone marrow cancer. Currently the investigators do not have a reliable way to predict which of these individuals with these disorders are more likely to develop a blood or bone marrow cancer. By studying a large group of individuals over time we hope to discover more about what factors might predict progression. The investigators may be able to identify markers which identify individuals who are more or less likely to develop blood or bone marrow cancer. These markers might be particular symptoms, gene changes called mutations or levels of particular molecules or cells in the blood or bone marrow. In the longer term this may enable us to identify those people who would benefit from certain types of treatment or from receiving treatment at an earlier stage and also to confidently reassure those who will never progress. Patients will be studied for up to 5 years with blood, bone marrow and saliva samples taken at key time-points to help answer these questions. In addition to looking for these markers we will also collect information about: * What it is like to live with one of these conditions * How many people with these conditions develop other significant medical conditions, such as serious infections, thrombosis (blood clots) or other types of cancer.