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Title: Population-based study of autoimmune conditions and the risk of specific lymphoid malignancies.
Authors: Anderson LA,  Gadalla S,  Morton LM,  Landgren O,  Pfeiffer R,  Warren JL,  Berndt SI,  Ricker W,  Parsons R,  Engels EA
Journal: Int J Cancer
Date: 2009 Jul 15
Branches: BB, CGB, IIB, OEEB, REB
PubMed ID: 19365835
PMC ID: PMC2692814
Abstract: Some autoimmune conditions are associated with increased risk of lymphoid malignancies, but information on specific malignancy subtypes is limited. From the U.S. Surveillance Epidemiology and End Results-Medicare database, we selected 44,350 lymphoid malignancy cases (> or =67 years) and 122,531 population-based controls. Logistic regression was used to derive odds ratios (ORs) comparing the prevalence of autoimmune conditions in cases and controls, by lymphoid malignancy subtype, adjusted for gender, age at malignancy/selection, year of malignancy/selection, race and number of physician claims. The strongest associations observed by non-Hodgkin lymphoma (NHL) subtypes were diffuse large B-cell lymphoma with rheumatoid arthritis (OR 1.4, 95%CI 1.2-1.5) and Sjögren syndrome (2.0, 1.5-2.8); T-cell lymphoma with hemolytic anemia (9.7, 4.3-22), psoriasis (3.1, 2.5-4.0), discoid lupus erythematosus (4.4, 2.3-8.4) and celiac disease (5.0, 2.4-14.); and marginal zone lymphoma with Sjögren syndrome (6.6, 4.6-9.5), systemic lupus erythematosus (2.8, 1.7-4.7) and hemolytic anemia (7.4, 3.1-18). Hodgkin lymphoma was associated with systemic lupus erythematosus (3.5, 1.9-6.7). Multiple myeloma was associated only with pernicious anemia (1.5, 1.3-1.7). Several autoimmune conditions were associated with increased risk of lymphoid neoplasms, especially NHLs of diffuse large B-cell, marginal zone and T-cell subtypes. These results support a mechanism whereby chronic antigenic stimulation leads to lymphoid malignancy.