To Evaluate the Immunogenicity and Safety of Sarilumab Administered as Monotherapy in Patients With Rheumatoid Arthritis (RA)

Total study duration was up to 34 weeks: Up to 4-week screening period, 24-week open-label treatment phase, 6-week post-treatment observation. After completion of the treatment phase of this study, participants were eligible to enter a long term safety study (LTS11210 - SARIL-RA-EXTEND) for continuous treatment with sarilumab (SAR153191 \[REGN88\]).