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Twelve clinical trials have documented that prednisone or prednisolone in doses of 10 mg/day or less is efficacious to improve function, maintain status and/or slow radiographic progression in patients with rheumatoid arthritis (RA). An early trial reported by de Andrade et al. [Ann Rheum Dis 1964;23:158-162] in 1964 indicated that 5 mg of prednisolone at night was preferred to 5 mg of prednisone in the morning. Harris et al. [J Rheumatol 1983;10:713-721] documented the efficacy of 5 mg/day of prednisone in a non-double-blind trial in 1983. Two important trials in the 1990s by Kirwan [N Engl J Med 1995;333:142-146] using 7.5 mg/day, and the COBRA study by Boers et al. [Lancet 1997;350:309-318] with step-down from 60 mg rapidly tapered to 5 mg/day led to strong advocacy of low-dose glucocorticoids. In 2002, the first Utrecht Study [Ann Intern Med 2002;136:1-12] indicated that 10 mg/day prednisone slowed radiographic progression, a finding confirmed and extended in 2005 by Svensson et al. [Arthritis Rheum 2005;52:3360-3370] with 7.5 mg/day, and Wassenberg et al. [Arthritis Rheum 2005;52:3371-3380] with 5 mg/day of prednisolone. In 2008, Buttgereit et al. [Lancet 2008;371:205-214] reported CAPRA-1, which documented that modified-release prednisone or prednisolone taken at bedtime led to lower morning stiffness and IL-6 levels compared to usual morning prednisone. In 2009, Pincus et al. [Ann Rheum Dis 2009;68:1715-1720] reported a withdrawal clinical trial, in which patients who took 3 mg/day were gradually withdrawn to placebo, and dropped out at a significantly higher rate than control patients who were 'withdrawn' to prednisone. In 2012, a second Utrecht Study [Ann Intern Med 2012;156:329-339], CAMERA-II, documented that 10 mg of prednisone added to a 'treat-to-target' strategy with methotrexate provided incremental slowing of radiographic progression. An Italian study of patients with early RA who received step-up disease-modifying antirheumatic drug therapy over 2 years plus prednisolone or not indicated higher rates of clinical remission and sustained remission associated with 7.5 mg/day of prednisolone [Arthritis Res Ther 2012; 14:R112]. The CAPRA-2 trial [Ann Rheum Dis 2013;72:204-210] documented that modified-release nighttime prednisone or prednisolone was significantly more efficacious than placebo. Taken together, these 12 clinical trials indicate that low-dose glucocorticoids prednisone or prednisolone provides symptomatic relief, improved functional status and slowing of radiographic progression for patients with RA. © 2014 S. Karger AG, Basel.

Clinical Trials Documenting the Efficacy of Low-Dose Glucocorticoids in Rheumatoid Arthritis