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  • Title: Tolerance and efficacy of rituximab and changes in serum B cell biomarkers in patients with systemic complications of primary Sjögren's syndrome.
    Author: Seror R, Sordet C, Guillevin L, Hachulla E, Masson C, Ittah M, Candon S, Le Guern V, Aouba A, Sibilia J, Gottenberg JE, Mariette X.
    Journal: Ann Rheum Dis; 2007 Mar; 66(3):351-7. PubMed ID: 16950808.
    Abstract:
    OBJECTIVE: To investigate the safety and efficacy of rituximab (RTX) for systemic symptoms in patients with primary Sjögren's syndrome (pSS), and changes in B cell biomarkers. PATIENTS AND METHODS: The records of 16 patients with pSS according to the American European consensus group criteria were reviewed retrospectively. RESULTS: Patients, all women, had a median age of 58.5 (range 41-71) years and a disease duration of 9.5 (range 0-25) years. RTX was prescribed for lymphoma (n = 5), refractory pulmonary disease with polysynovitis (n = 2), severe polysynovitis (n = 2), mixed cryoglobulinaemia (n = 5), thrombocytopenia (n = 1) and mononeuritis multiplex (n = 1). The median follow-up duration was 14.5 (range 2-48) months. Three patients experienced adverse events, including one mild serum sickness-like reaction with the presence of human antichimeric antibodies. Efficacy of treatment was observed in 4 of 5 patients with lymphomas and in 9 of 11 patients with systemic involvement. Dryness was improved in only a minority of patients. Corticosteroid dose was reduced in 11 patients. RTX induced decreased rheumatoid factor, gamma-globulin and beta2-microglobulin levels, and the level of B cell activating factor of the tumour necrosis factor family (BAFF) increased concomitantly with B cell depletion. Five patients were re-treated, with good efficacy and tolerance, except for one with probable serum sickness-like reaction. CONCLUSION: This study shows good efficacy and fair tolerance of RTX for systemic features. In addition, RTX allows for a marked reduction in corticosteroid use. Except for BAFF, the level of which increases, serum B cell biomarker levels decrease after taking RTX. Controlled trials should be performed to confirm the efficacy of RTX in pSS.
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