Abstract
B-cell-directed therapy—the use of agents that eliminate B cells or block cytokines important for B-cell function—is emerging as a promising approach to the treatment of rheumatic disease. Target diseases, including systemic lupus erythematosus (SLE), display diverse patterns of autoantibody production and aberrant activation of B cells. Despite the success of this general approach, the mechanisms by which B-cell-directed therapy ameliorates disease, and the role of autoantibodies as biomarkers of clinical response remain unclear. Importantly, although B-cell-directed therapy can reduce the production of some autoantibodies, the effects can be variable and heterogeneous, probably reflecting the critical (but ill-defined) roles of different B-cell and plasma cell populations in autoantibody production. Future studies during clinical trials of these agents are needed to define which B-cell and autoantibody populations are affected (or ought to be), and to discover informative biomarkers of clinical response that can be used to advance this therapeutic approach.
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Acknowledgements
The authors' research activities are supported by a Veterans Administration Merit Review grant and NIH grants AI083923, AI082302 and T32-AI07217-28. P. E. Lipsky and A. C. Grammer were formerly in the autoimmunity branch of the Intramural Research Program, NIAMS, NIH, Bethseda, MD, USA.
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Pisetsky, D., Grammer, A., Ning, T. et al. Are autoantibodies the targets of B-cell-directed therapy?. Nat Rev Rheumatol 7, 551–556 (2011). https://doi.org/10.1038/nrrheum.2011.108
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DOI: https://doi.org/10.1038/nrrheum.2011.108