Tumor necrosis factor α inhibitor therapy and cancer risk in chronic immune-mediated diseases

Kevin Haynes1, Timothy Beukelman, Jeffrey R Curtis

  • 1University of Pennsylvania, Department of Epidemiology and Biostatistics, Philadelphia, PA 19104, USA. khaynes@upenn.edu

Arthritis and Rheumatism
|October 12, 2012
PubMed
Abstract

Insights

Tumor necrosis factor α (TNFα) inhibitor therapy did not increase short-term cancer risk in patients with immune-mediated diseases compared to alternative treatments. This finding supports the safety of TNFα inhibitors for managing chronic inflammatory conditions.

Area of Science:

  • Immunology
  • Oncology
  • Rheumatology

Background:

  • Immune-mediated chronic inflammatory diseases (ICIDs) like rheumatoid arthritis and inflammatory bowel disease are often treated with disease-modifying therapies.
  • Tumor necrosis factor α (TNFα) inhibitors are a class of biologic agents used to manage ICIDs.
  • Concerns exist regarding the potential oncogenic risk associated with TNFα inhibitor therapy.

Purpose of the Study:

  • To compare the incidence of cancer in patients receiving TNFα inhibitor therapy versus those on alternative therapies for ICIDs.
  • To assess the short-term cancer risk associated with TNFα inhibitors across various immune-mediated conditions.

Main Methods:

  • The Safety Assessment of Biological Therapeutics study utilized data from multiple large healthcare databases.
  • Propensity score-adjusted hazard ratios were calculated to compare cancer incidence between TNFα inhibitor users and alternative therapy users.
  • A validated algorithm was used for cancer detection, with varying positive predictive values for different cancer types.

Main Results:

  • Across rheumatoid arthritis, inflammatory bowel disease, psoriasis, and psoriatic arthritis, no elevated incidence of any solid cancer was observed with TNFα inhibitor therapy compared to alternative treatments.
  • Specifically in rheumatoid arthritis patients, TNFα inhibitor use was not associated with an increased incidence of the 10 most common US cancers or nonmelanoma skin cancer.
  • Hazard ratios for solid cancers generally showed no significant increase, with some confidence intervals including 1.

Conclusions:

  • Short-term cancer risk was not found to be elevated in patients treated with TNFα inhibitors compared to those receiving commonly used alternative therapies for immune-mediated chronic inflammatory diseases.
  • These findings suggest that TNFα inhibitors are a relatively safe treatment option in terms of short-term oncogenic risk for these conditions.

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