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Efficacy and Safety of Adalimumab in Patients With Active Rheumatoid Arthritis Treated Concomitantly With Methotrexate.

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Abbott

Status and phase

Completed
Phase 3

Conditions

Rheumatoid Arthritis

Treatments

Biological: Adalimumab
Drug: Placebo

Study type

Interventional

Funder types

Industry

Identifiers

Details and patient eligibility

About

The purpose of the study was to assess the safety, immunogenicity, and clinical efficacy of adalimumab compared with placebo (during double-blind phase) and to to evaluate the long-term safety and maintenance of efficacy following repeated administration of adalimumab (during open-label extension phase) in patients with persistently active rheumatoid arthritis who were receiving concurrent methotrexate therapy.

Full description

This was a 10-year study which had an initial 52-week, double-blind, placebo-controlled phase followed by an open-label extension phase up to 9 years in duration. Data were analyzed for the double-blind phase using all patients who were randomized and received at least one dose of study drug through Week 52 and for all patients who received at least one dose of adalimumab during the 10-year study (the Intent-to-Treat [ITT] population).

Enrollment

619 patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Age 18 or older and in good health (Investigator discretion) with a recent stable medical history
  • Met American College of Rheumatology (ACR) criteria for diagnosis of active rheumatoid arthritis (RA) and had at both screening and baseline visits >=6 swollen joints and >=9 tender joints, despite a minimum of 3-months treatment with methotrexate (MTX). (Distal interphalangeal joints [DIPs] were not to be included in joint count for inclusion. The screening and baseline visits could be 3 to 28 days apart for patients not previously receiving disease-modifying anti-rheumatic drugs [DMARDs] other than MTX or 4 to 6 weeks for patients requiring a DMARD washout period.)
  • Insufficient efficacy with MTX 12.5 to 25 mg per week (10 mg per week if MTX intolerant).
  • If patient on a second-line treatment (DMARD) other than MTX, he/she had to discontinue it for at least 28 days before the baseline visit (the washout period).
  • Treatment with oral folic acid 1-3 mg/day or, if appropriate, up to 10 mg leucovorin per week.
  • Both rheumatoid factor positivity and a C-reactive protein value >=1 mg/dL, or at least one joint erosion on X-ray.

Exclusion criteria

  • Subject considered by the investigator, for any reason, to be an unsuitable candidate for the study.
  • Female subject who was pregnant or breast-feeding or considering becoming pregnant.
  • Preceding treatment with any tumor necrosis factor (TNF) antagonist, including adalimumab.
  • Prior exposure to alkylating agents, such as chlorambucil or cyclophosphamide.
  • Intra-articular, intramuscular, or intravenous administration of corticosteroids within 4 weeks prior to the screening visit.
  • Subject was wheelchair bound or bedridden.

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Double Blind

619 participants in 6 patient groups, including a placebo group

DB adalimumab 20 mg ew
Experimental group
Description:
Subjects received 20 mg adalimumab subcutaneously (SC) once weekly (ew) and concomitant methotrexate (MTX) during the double-blind (DB) phase.
Treatment:
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
DB adalimumab 40 mg eow
Experimental group
Description:
Subjects received 40 mg adalimumab subcutaneously (SC) every other week (eow) and concomitant methotrexate (MTX) during the double-blind (DB) phase. Subjects received placebo injections SC and concomitant MTX on the alternate weeks during the DB phase.
Treatment:
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
DB placebo ew
Placebo Comparator group
Description:
Subjects received placebo subcutaneously (SC) once weekly (ew) and concomitant methotrexate (MTX) during the double-blind (DB) phase.
Treatment:
Drug: Placebo
DB adalimumab 20 mg ew/OL adalimumab 40 mg eow
Experimental group
Description:
Subjects received adalimumab 20 mg subcutaneously (SC) once weekly (ew) during the double-blind (DB) phase, then adalimumab 40 mg SC every other week (eow) during the open-label (OL) extension phase, along with concomitant methotrexate (MTX).
Treatment:
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
DB adalimumab 40 mg eow/OL adalimumab 40 mg eow
Experimental group
Description:
Subjects received adalimumab 40 mg subcutaneously (SC) every other week (eow) with placebo on alternate weeks during the double-blind (DB) phase, then adalimumab 40 mg SC eow during the open-label (OL) extension phase, along with concomitant methotrexate (MTX).
Treatment:
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
DB placebo ew/OL adalimumab 40 mg eow
Experimental group
Description:
Subjects received placebo subcutaneously (SC) once weekly (ew) during the double-blind phase, then adalimumab 40 mg SC every other week (eow) during the open-label (OL) extension phase, along with concomitant methotrexate (MTX).
Treatment:
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab
Biological: Adalimumab

Trial contacts and locations

87

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Data sourced from clinicaltrials.gov

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