In this observational study, the German RABBIT cohort was used to assess the long-term effectiveness and retention rates of tocilizumab (TCZ) in patients with prior bDMARD failures. Results of the study suggested that TCZ could be an effective treatment option for patients with difficult-to-treat RA. A total of 885 patients were involved in the study and these were categorised dependent on the number of bDMARD failures they had prior to TCZ treatment. Patient data recorded in the cohort included...