This is a phase 3 study to evaluate the usability of the CT-P47 auto-injector in patients with moderate to severe active rheumatoid arthritis.

CT-P47, containing the active ingredient tocilizumab, is a recombinant humanized monoclonal antibody that is being developed as a similar biological medicinal product to RoActemra/Actemra. The purpose of this study is to evaluate the usability of the CT-P47 auto-injector in patients with moderate to severe rheumatoid arthritis when co-administered with methotrexate.

Inclusion Criteria:

• Patient is male or female aged 18 to 70 years old, both inclusive.
• Patient must be able and willing to self-administer SC injections.
• Patient has had a diagnosis of RA according to the 2010 ACR/EULAR classification criteria (Aletaha et al., 2010) for at least 24 weeks prior to the first administration of the study drug (Day 1).

Exclusion Criteria:

• Patient who has previously received investigational or licensed product; targeted synthetic DMARD(s) (e.g., tofacitinib, baricitinib) for the treatment of RA and/or an interleukin-6 (IL-6) inhibitor for any purposes.
• Patient who has previously received more than 1 biologic agents approved for the treatment of RA.
• Patient who has allergies to any of the excipients of study drug or any other murine and human proteins, or patient with a hypersensitivity to immunoglobulin products.