The aim of this proposal is to identify immune biomarkers, genetic risk, and the clinical consequences of low count monoclonal B-cell lymphocytosis (LC MBL), a common premalignant condition affecting up to 17% of European adults age\>40. LC MBL is a precursor to chronic lymphocytic leukemia (CLL), characterized by a circulating population of clonal B-cells. It is relatively understudied, despite emerging evidence of clinical consequences such as increased risk for life-threatening infections and lymphoid malignancies. Studies reported that male sex, age, family history of CLL, and CLL-susceptibility genetic loci were associated with LC MBL risk. These findings were reported in European ancestry individuals and have not been generalized to other thnicities. This study will provide this missing knowledge using a unique multi-ethnic Israeli population of Jews and Arabs that have one of the highest and lowest age-standardized incidence rates of CLL in the world, respectively, and characterized with different genetic backgrounds.
Age range
40 Years
Sex
ALL
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Assess the relationship between LC MBL and life-threatening infections, hematologic malignancies, and solid tumors among Jews and Arabs in Israel
Timeframe: From enrollment and 15 years of follow up
Assess the relationship between LC MBL and cardiovascular diseases, autoimmune conditions, and Alzheimer among Jews and Arabs in Israel
Timeframe: From enrollment and 15 years of follow up
Identify germline genetic factors that are associated with LC MBL risk among Jews and Arabs in Israel
Timeframe: The first 5 years of the study
Evaluate the prevalence of LC MBL by Jews and Arabs and by sex in Israel.
Timeframe: The first 5 years of the study
Identify immune biomarkers that are associated with LC MBL risk
Timeframe: The first 5 years of the study