Effect of Discontinuing TNFalpha Antagonist Therapy in Patients With Remission of Rheumatoid Arthritis

Joint Bone Spine. 2009 Jul;76(4):350-5. doi: 10.1016/j.jbspin.2008.11.009. Epub 2009 Apr 11.

Abstract

Objective: The objective of this study was to determine the time to relapse after tumor necrosis factor alpha (TNFalpha) antagonist discontinuation in patients with remission of rheumatoid arthritis (RA).

Methods: Among 304 patients taking TNFalpha antagonist therapy for RA, 21 achieved a remission and were taken off the TNFalpha antagonist. Remission was defined as DAS28<2.6 for at least 6 months without nonsteroidal inflammatory drugs or more than 5 mg of prednisone per day but with disease-modifying antirheumatic drug (DMARD) therapy if needed. The same TNFalpha antagonist was restarted in the event of a relapse (DAS28>3.2).

Results: The 21 patients had a mean age of 61 years, a mean disease duration of 11.3 years, and a mean remission duration at TNFalpha antagonist discontinuation of 19.2 months. The TNFalpha antagonist was infliximab in 2 patients, adalimumab in 5, and etanercept in 14; and 14 patients were taking a concomitant DMARD. The number of patients still in remission after TNFalpha antagonist discontinuation was 9/20 after 6 months and 5/20 after 12 months. Mean time to relapse was 14.7 weeks. While off TNFalpha antagonist therapy, 3 of the 5 relapse-free patients after 12 months were on DMARD therapy, compared to 11 of the 15 patients who relapsed. Compared to the 15 patients who relapsed, the 5 relapse-free patients had a longer time on TNFalpha antagonist therapy (56 months vs. 35 months, P=0.012) and a longer time in remission on TNFalpha antagonist therapy (35 months vs.14.5 months, P=0.04). The 15 patients who relapsed consistently achieved a remission after resuming TNFalpha antagonist therapy; the remission occurred within 2 months in 13 patients.

Conclusion: TNFalpha antagonist discontinuation in patients in remission of RA was followed by a relapse within 12 months in 75% of cases. Relapsing patients responded well to resumption of the same TNFalpha antagonist.

MeSH terms

  • Adalimumab
  • Adult
  • Aged
  • Aged, 80 and over
  • Antibodies, Monoclonal / therapeutic use*
  • Antibodies, Monoclonal, Humanized
  • Antirheumatic Agents / therapeutic use*
  • Arthritis, Rheumatoid / drug therapy*
  • Etanercept
  • Female
  • Humans
  • Immunoglobulin G / therapeutic use*
  • Infliximab
  • Male
  • Middle Aged
  • Receptors, Tumor Necrosis Factor / therapeutic use*
  • Recurrence
  • Remission Induction
  • Retrospective Studies
  • Time Factors
  • Tumor Necrosis Factor-alpha / antagonists & inhibitors*
  • Withholding Treatment*

Substances

  • Antibodies, Monoclonal
  • Antibodies, Monoclonal, Humanized
  • Antirheumatic Agents
  • Immunoglobulin G
  • Receptors, Tumor Necrosis Factor
  • Tumor Necrosis Factor-alpha
  • Infliximab
  • Adalimumab
  • Etanercept