Résumé :
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[BDSP. Notice produite par INIST-CNRS vahbR0xZ. Diffusion soumise à autorisation]. In immunosuppressed or autoimmune disease states, disordered immune responses may lead to non-Hodgkin's lymphoma (NHL). In a US population-based case-control study of NHL (1998-2000), the authors collected personal histories of immune-related conditions and use of immune-modulating therapies as well as family histories of autoimmune conditions. The study included 1,321 NHL cases and 1,057 controls ; only half received some questionnaire components. NHL was associated with Sjögren's syndrome (odds ratio (OR)=13,95% confidence interval (Cl) : 1.7,100) and lupus (OR=4.2,95% Cl : 1.2,15). Two specific NHL subtypes were strongly associated with Sjögren's syndrome : salivary gland (OR=290,95% Cl : 33,2600) and marginal zone (OR=75,95% Cl : 9.1,610). NHL was less convincingly associated with receipt of an organ transplant (OR=2.0,95% Cl : 0.4,11). Other autoimmune conditions were too rare to evaluate or not associated with NHL. Corticosteroid use was unrelated to NHL (OR=1.0,95% Cl : 0.8,1.2), but methotrexate use was marginally associated (OR=2.3,95% Cl : 0.7,7.5). Family history of dermatomyositis was associated with NHL (7 cases vs. 0 controls, OR=infinite ; two-sided p=0.02), but dermatomyositis was absent in cases themselves. Family history of remaining conditions was unrelated to NHL. Results suggest that disordered immunity in some immune-related conditions can lead to NHL.
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