<qa>  What is the purpose of this study?The purpose of this study is to test the hypothesis that anti-IL-6 therapy is effective for reducing plaque inflammation as measured by fluorine-2-deoxy-D-glucose positron emission tomography FDG-PET in patients with rheumatoid arthritis RA who are synthetic disease-modifying antirheumatic drugs dMARD inadequate responders and are naive to biologic therapy. 