Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomized, Double-blind Study of Safety and Reduction in Signs and Symptoms During Treatment With Tocilizumab Versus Placebo, in Combination With Methotrexate, in Patients With Moderate to Severe Rheumatoid Arthritis
Brief Summary: This 3 arm study will compare the safety and efficacy, with regard to reduction of signs and symptoms, of tocilizumab versus placebo, both in combination with methotrexate (MTX). in patients with moderate to severe active rheumatoid arthritis (RA) who currently have an inadequate response to MTX. Patients wil be randomized to receive tocilizumab 4mg/kg iv, tocilizumab 8mg/mg iv, or placebo iv, every 4 weeks; all patients will also receive methotrexate 10-25mg weekly. The anticipated time on study treatment is 3-12 months, and the target sample size is 500+ individuals.


Options:
A: Inclusion Criteria:

* adult patients at least 18 years of age with moderate to severe active RA for at least 6 months;
* inadequate response to a stable dose of MTX;
* patients of reproductive potential must be using reliable methods of contraception.

Exclusion Criteria:

* major surgery (including joint surgery) within 8 weeks before entering study, or planned surgery within 6 months after entering study;
* prior treatment failure with an anti-tumor necrosis factor agent;
* women who are pregnant or breast-feeding.
B: Key Inclusion Criteria:

* Presence of active clinical synovitis in at least 2 joints, 1 of which must have been a small joint, for a minimum of 8 weeks prior to screening
* Onset of persistent symptoms ≤ 2 years prior to screening
* Positive test result for anticyclic citrullinated peptides 2
* Methotrexate naive or with minimum exposure to methotrexate, defined as no more than 10 mg/week for ≤4 weeks and no methotrexate dose for 1 month prior to screening visit
* Biologic naive, including no treatment with an investigational biologic prior to screening
* Disease Activity Score 28 based on C-reactive protein score ≥3.2 at screening
* Withdrawal from any treatment with chloroquine, hydroxychloroquine, and/or sulfasalazine (wash-out) for a minimum of 28 days prior to randomization
* If receiving oral corticosteroids, on a stable low dose (≤ 10 mg/day prednisone equivalent) for at least 4 weeks
* Able to undergo magnetic resonance imaging

Key Exclusion Criteria:

* Meeting diagnostic criteria for other rheumatic disease (eg, lupus erythematosus)
* Treatment with an intravenous, intramuscular, or intraarticular corticosteroid within 4 weeks prior to randomization
* Scheduled for or anticipating joint replacement surgery
* Presence of concomitant illness likely to require systemic glucocorticosteroid therapy during the study, in the opinion of the investigator
* History of malignancy in the last 5 years
* Any serious bacterial infection within the last 3 months not treated or resolved with antibiotics, or any chronic or recurrent bacterial infection
* At risk for tuberculosis
* Evidence of active or latent bacterial or viral infection at the time of potential enrollment, including human immunodeficiency or herpes zoster virus or cytomegalovirus that resolved less than 2 months prior to enrollment
C: Inclusion Criteria:

* RA, symptom duration \< 12 months

Exclusion Criteria:

* Contraindication to any of the trial medications
D: Inclusion Criteria:

Patients must have either failed to achieve American College of Rheumatology 20 % Response Criteria (ACR20) at Weeks 12 and 14 in C87027 \[NCT00152386\], or must have completed the entire Week 52 assessment of C87027 \[NCT00152386\] trial.

Exclusion Criteria:

* A diagnosis of any other inflammatory Arthritis (e.g. Psoriatic Arthritis or Ankylosing Spondylitis)
* A secondary, non-inflammatory type of Arthritis (e.g. Osteoarthritis or Fibromyalgia) that in the Investigator's opinion is symptomatic enough to interfere with evaluation of the effect of CDP870 on the patient's primary diagnosis of Rheumatoid Arthritis
* Any concomitant biological therapy
* Any experimental therapy, within or outside a clinical trial

Answer: A