Drug Concentration, Immunogenicity, and Efficacy Study in Patients With Rheumatoid Arthritis Currently Treated With Etanercept, Adalimumab, or Infliximab
Public ClinicalTrials.gov record NCT01981473. 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
Anti-tnf Inhibitor Antibody-mediated Blockade Of Drug Efficacy In Rheumatoid Arthritis (Antibody-ra)
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of this study is to examine the relationship between anti-drug antibodies, serum drug concentrations, and clinical response for rheumatoid arthritis patients being treated with etanercept, adalimumab or infliximab.
Study identification
- NCT ID
- NCT01981473
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 605 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
- Jan 2014 (Type not available)
- Primary completion
- Dec 2014 (Actual)
- Completion
- Dec 2014 (Actual)
- Last update posted
- Jan 12, 2016
2014
United States locations
- U.S. sites
- 34
- U.S. states
- 20
- U.S. cities
- 32
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Arizona Arthritis & Rheumatology | Glendale | Arizona | 85304 | — |
| Arizona Arthritis & Rheumatology Associates, P. C. | Mesa | Arizona | 85202 | — |
| Arizona Arthritis & Rheumatology | Phoenix | Arizona | 85032 | — |
| Arizona Arthritis and Rheumatology Research, PLLC | Phoenix | Arizona | 85032 | — |
| Arizona Arthritis & Rheumatology Research | Sun City | Arizona | 85351 | — |
| Mercy Clinic Hot Springs Communities | Hot Springs | Arkansas | 71913 | — |
| Sutter Institute for Medical Research | Sacramento | California | 95816 | — |
| Arthritis Care Center, Incorporated | San Jose | California | 95035 | — |
| Rheumatology Consultants of Delaware dba Delaware Arthritis | Lewes | Delaware | 19958 | — |
| Omega Research Consultants, LLC | DeBary | Florida | 32713 | — |
| Center for Rheumatology, Immunology, and Arthritis | Fort Lauderdale | Florida | 33309 | — |
| Florida Medical Research | Gainesville | Florida | 32607 | — |
| Arthritis and Rheumatic Care Center | South Miami | Florida | 33143 | — |
| Health Point Medical Group, Inc. | Tampa | Florida | 33614 | — |
| Northeast Georgia Diagnostic Clinic, LLC | Gainesville | Georgia | 30501 | — |
| Via Christi Hospitals Wichita, Inc. | Wichita | Kansas | 67214 | — |
| Rheumatology Associates of Baltimore | Baltimore | Maryland | 21286 | — |
| Phase III Clinical Research | Fall River | Massachusetts | 02720 | — |
| David S. Rosenberg, M.D | Florissant | Missouri | 63031 | — |
| Dr Melvin Albert Churchill Jr | Lincoln | Nebraska | 68516 | — |
| Prospect Medical Offices | Midland Park | New Jersey | 07432 | — |
| Advanced Arthritis Care Center | Brooklyn | New York | 11235 | — |
| Prem C.Chatpar, M.D., LLC | Plainview | New York | 11803 | — |
| Box Arthritis and Rheumatology | Charlotte | North Carolina | 28210 | — |
| Clinical Research Center of Reading, LLC | Wyomissing | Pennsylvania | 19610 | — |
| Low Country Rheumatology, PA | North Charleston | South Carolina | 29406 | — |
| Comprehensive Rheumatology Care | Hendersonville | Tennessee | 37075 | — |
| Elizabeth Marini Simpson | Hixon | Tennessee | 37343 | — |
| Austin Regional Clinic | Austin | Texas | 78731 | — |
| Accurate Clinical Research | Houston | Texas | 77084 | — |
| Clinical Research Institute of Houston | Houston | Texas | 77090 | — |
| Spring Clinical Research | Tomball | Texas | 77375 | — |
| Center for Arthritis and Rheumatic Diseases, P.C. | Chesapeake | Virginia | 23320 | — |
| Arthritis Northwest, PLLC | Spokane | Washington | 99204 | — |
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 20 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01981473, 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 12, 2016 · Synced Nov 3, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT01981473 live on ClinicalTrials.gov.