title: Precursors to lymphoproliferative malignancies.
abstract: We review monoclonal B-cell lymphocytosis (MBL) as a precursor to chronic lymphocytic leukemia and monoclonal gammopathy of undetermined significance (MGUS) as a precursor to plasma cell disorders. These conditions are present in the general population and increase with age. These precursors aggregate with lymphoproliferative malignancies in families suggesting shared inheritance. MBL and MGUS may share some of the same risk factors as their related malignancies but data are limited. Although these conditions are characterized by enhanced risk for the associated malignancy, the majority of individuals with these conditions do not progress to malignancy. A key focus for current work is to identify markers that predict progression to malignancy.
authors.affiliation: Genetic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, NCI, 6120 Executive Blvd., Bethesda, MD 20892, USA. goldinl@mail.nih.gov
authors.forename: Lynn R
authors.initials: LR
authors.lastname: Goldin
authors.forename: Mary L
authors.initials: ML
authors.lastname: McMaster
authors.forename: Neil E
authors.initials: NE
authors.lastname: Caporaso
mesh_terms: D001402:B-Lymphocytes / Q000473:pathology*; D018450:Disease Progression; D006801:Humans; D015451:Leukemia, Lymphocytic, Chronic, B-Cell / Q000209:etiology / Q000473:pathology*; D008218:Lymphocytosis / Q000209:etiology / Q000473:pathology*; D008998:Monoclonal Gammopathy of Undetermined Significance / Q000209:etiology / Q000473:pathology*; D010950:Plasma Cells / Q000473:pathology*; D011230:Precancerous Conditions / Q000209:etiology / Q000473:pathology*; D012307:Risk Factors
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