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A Randomized, Double‐Blind Trial of Abatacept (CTLA‐4Ig) for the Treatment of Takayasu Arteritis
Author(s) -
Langford Carol A.,
Cuthbertson David,
Ytterberg Steven R.,
Khalidi Nader,
Monach Paul A.,
Carette Simon,
Seo Philip,
Moreland Larry W.,
Weisman Michael,
Koening Curry L.,
Sreih Antoine G.,
Spiera Robert,
McAlear Carol A.,
Warrington Kenneth J.,
Pagnoux Christian,
McKin Kathleen,
Forbess Lindsy J.,
Hoffman Gary S.,
Borchin Renée,
Krischer Jeffrey P.,
Merkel Peter A.
Publication year - 2017
Publication title -
arthritis and rheumatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.106
H-Index - 314
eISSN - 2326-5205
pISSN - 2326-5191
DOI - 10.1002/art.40037
Subject(s) - abatacept , medicine , prednisone , randomization , placebo , clinical endpoint , regimen , discontinuation , adverse effect , randomized controlled trial , surgery , rituximab , alternative medicine , pathology , lymphoma
Objective To compare the efficacy of abatacept to that of placebo for the treatment of Takayasu arteritis (TAK). Methods In this multicenter trial, patients with newly diagnosed or relapsing TAK were treated with abatacept 10 mg/kg intravenously on days 1, 15, and 29 and week 8, together with prednisone administered daily. At week 12, patients in remission underwent a double‐blinded randomization to continue to receive abatacept monthly or switch to placebo. Patients in both study arms received a standardized prednisone taper, reaching a dosage of 20 mg daily at week 12, with discontinuation of prednisone at week 28. All patients remained on their randomized assignment until meeting criteria for early termination or until 12 months after enrollment of the last patient. The primary end point was duration of remission (relapse‐free survival). Results Thirty‐four eligible patients with TAK were enrolled and treated with prednisone and abatacept; of these, 26 reached the week 12 randomization and underwent a blinded randomization to receive either abatacept or placebo. The relapse‐free survival rate at 12 months was 22% for those receiving abatacept and 40% for those receiving placebo ( P  = 0.853). Treatment with abatacept in patients with TAK enrolled in this study was not associated with a longer median duration of remission (median duration 5.5 months for abatacept versus 5.7 months for placebo). There was no difference in the frequency or severity of adverse events, including infection, between the treatment arms. Conclusion In patients with TAK, the addition of abatacept to a treatment regimen with prednisone did not reduce the risk of relapse.

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