A Phase 2 Study For Patients With A Physician's Diagnosis Of Rheumatoid Arthritis
Public ClinicalTrials.gov record NCT00550446. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Phase 2b, Randomized, Double Blind, Placebo Controlled Active Comparator, Multicenter Study To Compare 5 Dose Regimens Of CP- 690,550 And Adalimumab Versus Placebo, Administered For 6 Months In The Treatment Of Subjects With Active Rheumatoid Arthritis
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of this study is to determine the effectiveness and safety, over 6 months, of 5 doses of CP-690,550 for the treatment of adults with active rheumatoid arthritis. Five out of seven subjects will receive CP-690,550. One out of seven will receive adalimumab (Humira®) and one out of seven will only receive inactive substances (placebo.)
Study identification
- NCT ID
- NCT00550446
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 386 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Sep 2007 (Type not available)
- Primary completion
- Jan 2009 (Actual)
- Completion
- Jan 2009 (Actual)
- Last update posted
- Jan 3, 2013
2007 – 2009
United States locations
- U.S. sites
- 22
- U.S. states
- 13
- U.S. cities
- 20
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Pfizer Investigational Site | Mesa | Arizona | 85208 | — |
| Pfizer Investigational Site | Little Rock | Arkansas | 72205 | — |
| Pfizer Investigational Site | Northridge | California | 91325 | — |
| Pfizer Investigational Site | Palo Alto | California | 94304 | — |
| Pfizer Investigational Site | Stanford | California | 94305 | — |
| Pfizer Investigational Site | Tarzana | California | 91356 | — |
| Pfizer Investigational Site | Upland | California | 91786 | — |
| Pfizer Investigational Site | Orlando | Florida | 32804 | — |
| Pfizer Investigational Site | Tampa | Florida | 33614 | — |
| Pfizer Investigational Site | Morton Grove | Illinois | 60053 | — |
| Pfizer Investigational Site | Rockford | Illinois | 61107 | — |
| Pfizer Investigational Site | Cedar Rapids | Iowa | 52401-2112 | — |
| Pfizer Investigational Site | Wichita | Kansas | 67203 | — |
| Pfizer Investigational Site | Wichita | Kansas | 67208 | — |
| Pfizer Investigational Site | New Orleans | Louisiana | 70115 | — |
| Pfizer Investigational Site | Hickory | North Carolina | 28601 | — |
| Pfizer Investigational Site | Hickory | North Carolina | 28602 | — |
| Pfizer Investigational Site | Dayton | Ohio | 45408 | — |
| Pfizer Investigational Site | Duncansville | Pennsylvania | 16635 | — |
| Pfizer Investigational Site | Knoxville | Tennessee | 37909-1600 | — |
| Pfizer Investigational Site | Dallas | Texas | 75235 | — |
| Pfizer Investigational Site | Mesquite | Texas | 75150 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 41 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00550446, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jan 3, 2013 · Synced Oct 28, 2026
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Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT00550446 live on ClinicalTrials.gov.