Rituximab for IgG4-related disease: a prospective, open-label trial

Published on Jun 1, 2015in Annals of the Rheumatic Diseases16.102
· DOI :10.1136/ANNRHEUMDIS-2014-206605
Mollie N. Carruthers15
Estimated H-index: 15
(Harvard University),
Mark Topazian53
Estimated H-index: 53
(Mayo Clinic)
+ 7 AuthorsJohn H. Stone76
Estimated H-index: 76
(Harvard University)
Sources
Abstract
Objectives To evaluate the efficacy of rituximab (RTX) in IgG4-related disease (IgG4-RD) in an open-label pilot trial. Methods We treated 30 IgG4-RD patients with two doses of RTX (1000 mg each). The participants were either treated with RTX alone (n = 26; 87%) or required to discontinue baseline glucocorticoids (GC) within 2 months (n = 4; 13%). Disease activity was measured by the IgG4-RD Responder Index (IgG4-RD RI) and physician9s global assessment (PGA). Disease response was defined as the improvement of the IgG4-RD RI by two points. The primary outcome, measured at 6 months, was defined as: (1) decline of the IgG4-RD RI ≥2 points compared with baseline; (2) no disease flares before month 6; and (3) no GC use between months 2 and 6. Complete remission was defined as an IgG4-RD RI score of 0 with no GC use. Results Disease responses occurred in 97% of participants. The baseline IgG4-RD RI and PGA values, 11±7 and 63±22 mm, respectively, declined to 1±2 and 11±16 mm at 6 months (both p Conclusions RTX appears to be an effective treatment for IgG4-RD, even without concomitant GC therapy. Trial registration number ClinicalTrials.gov identifier: NCT01584388.
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