Please select the eligibility criteria that correspond to the clinical trial below.
Title: Efficacy and Safety of Etanercept in Active Rheumatoid Arthritis Despite Methotrexate Therapy in Japan
Brief Summary: Multi-center, parallel-group, randomized, open control study. All patients will be selected to two treatment groups.

1. Etanercept alone treatment group (25mg, twice/week, s.c.)
2. Etanercept combined with MTX group (25mg, twice/week, s.c.+MTX 6-8mg/week)


Options:
A: Inclusion Criteria:

* Patients had to be at least 18 years of age
* fulfilled the 1987 revised classification criteria for RA by in American College of Rheumatology (ACR)
* met the guidelines for the proper use of ETN in Japan (having at least 6 tender joints and 6 swollen joints
* either serum C-reactive protein more than 2 mg/dl or ESR no less than 28 mm at 1 hour, with adequate safety profiles)
* be ACR functional class I-III
* have been receiving MTX 6 mg/week for a minimum of 3 months at a stable dose for at least 4 weeks at the time of study enrollment

Exclusion Criteria:

* Patients who required concurrent use of prednisone (PSL) \>10 mg/day, or its equivalent, were excluded from study entry
* the start of dose increment of PSL equivalents within 3 months of the study enrollment
* experience of antirheumatic therapy except for MTX and PSL equivalents
* previous treatment with ETN or any other biological treatment
B: Inclusion Criteria:

* male/female, 18-75 years old, inclusive
* diagnosis of adult-onset RA
* had active disease
* had received methotrexate
* on a stable dose of folic acid

Exclusion Criteria:

* contraindication for methotrexate or anti-TNF
C: Inclusion Criteria:

* Adult patients, ≥ 18 to \< 65 years of age
* Rheumatoid Arthritis (RA) of \> 6 months duration at baseline (American College of Rheumatology criteria)
* Willing to receive immunization with pneumococcal polysaccharide and tetanus toxoid adsorbed vaccines
* Previous immunization with pneumococcal polysaccharide must have occurred ≥ 3 years of baseline, with tetanus containing vaccine ≥ 5 years
* Methotrexate therapy for at least 8 weeks prior to baseline at stable dose of 7.5-25 mg/week (oral or parenteral)
* Other disease-modifying antirheumatic drugs (DMARDs) must be withdrawn before baseline
* Oral corticosteroids must be at stable dose of \< 10 mg/day prednisone or equivalent
* Body weight ≤ 150 kg at screening

Exclusion Criteria:

* Major surgery (including joint surgery) within 12 weeks prior to baseline or planned major surgery within 8 weeks after baseline
* History of or current inflammatory joint disease or rheumatic autoimmune disease other than RA
* Pre-existing central nervous system demyelinating or seizure disorders
* Active current or history of recurrent bacterial, viral fungal, mycobacterial and other infections
* Any major episode of infection requiring hospitalization or treatment with intravenous antibiotics within 4 weeks prior to baseline or oral antibiotics within 2 weeks prior to baseline
* Active tuberculosis requiring treatment within 3 years prior to baseline
* Primary or secondary immunodeficiency (history or currently active)
* Intra-articular or parenteral corticosteroids within 4 weeks prior to baseline
* Previous treatment with RoActemra/Actemra
D: Inclusion Criteria:

* Diagnosis of RA according to the American College of Rheumatology criteria for at least 3 months prior to screening
* Have active Rheumatoid Arthritis at the time of screening and at baseline, as defined by 6 or more swollen joints and 6 or more tender joints and additional laboratory criteria

Exclusion Criteria:

* Have other inflammatory diseases, including but not limited to ankylosing spondylitis, systemic lupus erythematosus, Lyme disease
* Received disease-modifying antirheumatic drugs (\[DMARDs\] eg, D penicillamine, hydroxychloroquine, chloroquine, oral or parenteral gold, interleukin \[IL\]-1 receptor antagonist \[anakinra\], azathioprine, sulphasalazine, agents other than MTX) within 4 weeks prior to the first study dose

Answer: A