A Phase 4 Trial Assessing the ImPact of Residual Inflammation Detected Via Imaging TEchniques, Drug Levels and Patient Characteristics on the Outcome of Dose TaperIng of Adalimumab in Clinical Remission Rheumatoid ArThritis (RA) Subjects

1. Participant had a diagnosis of rheumatoid arthritis (RA) as defined by the 1987 revised American College of Rheumatology (ACR) classification criteria and/or the ACR /European League Against Rheumatism (EULAR) 2010 classification criteria (any duration since diagnosis).

2. Participant must have met the following criteria:

* Must have been treated with adalimumab 40 mg subcutaneously every other week (sc eow) for at least 12 months prior to Week 0 Visit

* Must have been treated with concomitant methotrexate (MTX) at a stable dose (oral, sc or intramuscular (im) at any dose) for at least 12 weeks prior to Week 0 Visit or if not on MTX, must have been treated with other allowed conventional synthetic disease-modifying anti-rheumatic drugs (csDMARDs) at a stable dose for at least 12 weeks prior to Week 0 Visit or if not treated with csDMARDs must maintain this regimen for at least 12 weeks prior to Week 0 Visit.

3. Participant must be in sustained clinical remission based on the following:

* At least one documented 4 or 3 (if Patient's Global Assessment ; PGA is not available) variables Disease Activity Score 28 Erythrocyte sedimentation rate (DAS28 ESR) or DAS28 C-reactive protein (CRP) \< 2.6 (or calculated based on documented components of the DAS28) in the participant's chart 6 months or longer prior to the Screening Visit;

* 4 variables DAS28 (ESR) assessed at Screening \< 2.6, with all components including ESR assessed at Screening.

4. If participant was receiving concomitant allowed csDMARDs (in addition or not to MTX) the dose must have been stable for at least 12 weeks prior to the Week 0 Visit (e.g., chloroquine, hydroxychloroquine, sulfasalazine, gold formulations \[including auranofin, gold sodium thiomalate, and aurothioglucose\] and/or leflunomide).

5. If participant was receiving concomitant oral corticosteroids, prednisone or equivalent must have been \< 10 mg/day and the dose must have been stable for at least 4 weeks prior to the Week 0 Visit.

6. If participant was receiving concomitant non-steroidal anti-inflammatory drugs (NSAIDs), tramadol or other equivalent opioids and/or non-opioid analgesics, the dose and/or therapeutic scheme must have been stable for at least 4 weeks prior to the Week 0 Visit.

7. Participant must have been able and willing to provide written informed consent and comply with the requirements of this study protocol.

What this study is about