Tofacitinib or Adalimumab Versus Placebo in Rheumatoid Arthritis

N Engl J Med. 2012 Aug 9;367(6):508-19. doi: 10.1056/NEJMoa1112072.

Abstract

Background: Tofacitinib (CP-690,550) is a novel oral Janus kinase inhibitor that is being investigated for the treatment of rheumatoid arthritis.

Methods: In this 12-month, phase 3 trial, 717 patients who were receiving stable doses of methotrexate were randomly assigned to 5 mg of tofacitinib twice daily, 10 mg of tofacitinib twice daily, 40 mg of adalimumab once every 2 weeks, or placebo. At month 3, patients in the placebo group who did not have a 20% reduction from baseline in the number of swollen and tender joints were switched in a blinded fashion to either 5 mg or 10 mg of tofacitinib twice daily; at month 6, all patients still receiving placebo were switched to tofacitinib in a blinded fashion. The three primary outcome measures were a 20% improvement at month 6 in the American College of Rheumatology scale (ACR 20); the change from baseline to month 3 in the score on the Health Assessment Questionnaire-Disability Index (HAQ-DI) (which ranges from 0 to 3, with higher scores indicating greater disability); and the percentage of patients at month 6 who had a Disease Activity Score for 28-joint counts based on the erythrocyte sedimentation rate (DAS28-4[ESR]) of less than 2.6 (with scores ranging from 0 to 9.4 and higher scores indicating greater disease activity).

Results: At month 6, ACR 20 response rates were higher among patients receiving 5 mg or 10 mg of tofacitinib (51.5% and 52.6%, respectively) and among those receiving adalimumab (47.2%) than among those receiving placebo (28.3%) (P<0.001 for all comparisons). There were also greater reductions in the HAQ-DI score at month 3 and higher percentages of patients with a DAS28-4(ESR) below 2.6 at month 6 in the active-treatment groups than in the placebo group. Adverse events occurred more frequently with tofacitinib than with placebo, and pulmonary tuberculosis developed in two patients in the 10-mg tofacitinib group. Tofacitinib was associated with an increase in both low-density and high-density lipoprotein cholesterol levels and with reductions in neutrophil counts.

Conclusions: In patients with rheumatoid arthritis receiving background methotrexate, tofacitinib was significantly superior to placebo and was numerically similar to adalimumab in efficacy. (Funded by Pfizer; ORAL Standard ClinicalTrials.gov number, NCT00853385.).

Publication types

  • Clinical Trial, Phase III
  • Comparative Study
  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adalimumab
  • Adult
  • Antibodies, Monoclonal, Humanized / administration & dosage
  • Antibodies, Monoclonal, Humanized / adverse effects
  • Antibodies, Monoclonal, Humanized / therapeutic use*
  • Antirheumatic Agents / administration & dosage
  • Antirheumatic Agents / adverse effects
  • Antirheumatic Agents / therapeutic use*
  • Arthritis, Rheumatoid / drug therapy*
  • Arthritis, Rheumatoid / immunology
  • Cholesterol / blood
  • Double-Blind Method
  • Drug Therapy, Combination
  • Enzyme Inhibitors / adverse effects
  • Enzyme Inhibitors / therapeutic use*
  • Female
  • Humans
  • Janus Kinase 3 / antagonists & inhibitors*
  • Least-Squares Analysis
  • Leukocyte Count
  • Lipoproteins / blood
  • Male
  • Methotrexate / therapeutic use
  • Middle Aged
  • Neutrophils
  • Piperidines
  • Pyrimidines / administration & dosage
  • Pyrimidines / adverse effects
  • Pyrimidines / therapeutic use*
  • Pyrroles / administration & dosage
  • Pyrroles / adverse effects
  • Pyrroles / therapeutic use*
  • Treatment Outcome

Substances

  • Antibodies, Monoclonal, Humanized
  • Antirheumatic Agents
  • Enzyme Inhibitors
  • Lipoproteins
  • Piperidines
  • Pyrimidines
  • Pyrroles
  • lipoprotein cholesterol
  • tofacitinib
  • Cholesterol
  • Janus Kinase 3
  • Adalimumab
  • Methotrexate

Associated data

  • ClinicalTrials.gov/NCT00853385