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Open Badges Editorial

Desperately looking for the right target in osteoarthritis: the anti-IL-1 strategy

Xavier Chevalier1*, Thierry Conrozier2 and Pascal Richette3

Author Affiliations

1 Department of Rheumatology, University of Paris XII, Henri Mondor Hospital, Bd de Lattre de Tassigny, Creteil 94010, France

2 Department of Rheumatology, University of Lyon SUD, Hospital Pierre Bénite, Lyon, Chemin du grand revoyet, 69495 Pierre Benite, France

3 Department of Rheumatology, University of Paris VII, Hospital Lariboisière, 10 rue Ambroise paré, Paris 75010, France

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Arthritis Research & Therapy 2011, 13:124  doi:10.1186/ar3436

See related research by Cohen et al.,

Published: 26 August 2011


Blocking IL-1 in patients with knee osteoarthritis is an attractive strategy. Cohen and colleagues report a randomised, placebo-controlled, multiple-dose trial using a monoclonal antibody blocking IL-1 type 1 receptor. They failed to show any positive results in terms of evolution of pain for up to 12 weeks, in line with the former trials using intraarticular injections of IL-1 receptor antagonist. A trend was observed, however, in a subgroup of patients with high level of pain at baseline. Although these data may suggest cessation of IL-1 therapy in osteoarthritis, other methods such as limited intraarticular anti-IL-1 delivery should still be considered.