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Increased risk of coccidioidomycosis in patients treated with tumor necrosis factor alpha antagonists
Laurie Bergstrom1, David E Yocum, Neil M Ampel
1University of Arizona, Tucson, 85724, USA. laurieb@arthritis.arizona.edu
Objective:
To describe a group of patients who were treated with tumor necrosis factor alpha (TNF alpha) antagonists and who developed coccidioidomycosis, and to test the hypothesis that patients with inflammatory arthritis receiving TNF alpha antagonist therapy are at higher risk for developing symptomatic coccidioidomycosis.
Methods:
Cases of coccidioidomycosis were identified and reviewed from among patients receiving TNF alpha antagonist therapy from May 1998 through February 2003 in 5 practices within the areas endemic for coccidioidomycosis (Arizona, California, and Nevada). In addition, the relative risk of developing symptomatic coccidioidomycosis was calculated in patients with inflammatory arthritis who were receiving treatment with infliximab, in comparison with patients with inflammatory arthritis who were not receiving infliximab, from January 2000 to February 2003 in a single medical center.
Results:
Thirteen cases of documented coccidioidomycosis were associated with TNF alpha antagonist therapy. Twelve cases were associated with the use of infliximab and 1 case with etanercept. Among the cohort of patients from a single medical center, 7 of the 247 patients receiving infliximab and 4 of the 738 patients receiving other therapies developed symptomatic coccidioidomycosis (relative risk 5.23, 95% confidence interval 1.54-17.71; P < 0.01).
Conclusion:
Patients with inflammatory arthritis who are undergoing treatment with infliximab appear to be at higher risk for developing symptomatic coccidioidomycosis as compared with those not receiving infliximab.
Insights
Patients treated with tumor necrosis factor alpha (TNF alpha) antagonists, particularly infliximab, face an increased risk of developing coccidioidomycosis. This finding highlights a critical safety concern for inflammatory arthritis patients in endemic areas.
Area of Science:
- Infectious Diseases
- Rheumatology
- Immunology
Background:
- Tumor necrosis factor alpha (TNF alpha) antagonists are used to treat inflammatory arthritis.
- Coccidioidomycosis is a fungal infection endemic to specific regions of the United States.
Observation:
- A study reviewed cases of coccidioidomycosis in patients receiving TNF alpha antagonist therapy.
- Thirteen cases were identified, predominantly associated with infliximab use.
Findings:
- Patients with inflammatory arthritis on infliximab showed a significantly higher relative risk (5.23) of developing symptomatic coccidioidomycosis compared to those on other therapies.
- This increased risk was statistically significant (P < 0.01).
Implications:
- Physicians should be aware of the heightened risk of coccidioidomycosis in patients treated with infliximab.
- Monitoring and preventive strategies may be warranted for patients in endemic areas receiving TNF alpha antagonists.
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