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An Immunohistopathologic Study to Profile the Folate Receptor Beta Macrophage and Vascular Immune Microenvironment in Giant Cell Arteritis
06:35

An Immunohistopathologic Study to Profile the Folate Receptor Beta Macrophage and Vascular Immune Microenvironment in Giant Cell Arteritis

Published on: February 8, 2019

Incidence of infections in patients with giant cell arteritis: a cohort study

Madeleine Durand1, Sara L Thomas

  • 1Centre Hospitalier de l'Universtité de Montréal, Montreal, Quebec, Canada. madeleine.durand.chum@ssss.gouv.qc.ca

Arthritis Care & Research
|December 21, 2011
PubMed

Insights

Patients with giant cell arteritis (GCA) face a significantly higher risk of systemic infections, especially within six months of diagnosis. This highlights the need for safer GCA treatments.

Area of Science:

  • Rheumatology
  • Infectious Diseases
  • Epidemiology

Background:

  • Giant cell arteritis (GCA) is the most common form of vasculitis in adults.
  • The infectious risk associated with GCA and its treatments is not well-established.

Purpose of the Study:

  • To estimate the risk of systemic infections in patients diagnosed with GCA.
  • To analyze infection risk in relation to GCA treatment, particularly focusing on steroid-sparing options.

Main Methods:

  • A matched historical cohort study was conducted using The Health Improvement Research Network data.
  • 1,664 GCA patients were matched with 8,078 non-GCA patients based on age, sex, general practice, and cohort entry date.
  • Random-effects Poisson regression models assessed incidence rates and rate ratios for lower respiratory tract infections (LRTI), urinary tract infections (UTI), and sepsis.

Main Results:

  • GCA patients had a higher incidence of systemic infections (48%) compared to non-GCA patients (37%).
  • Adjusted rate ratios for LRTI, UTI, and serious infections were significantly elevated in GCA patients (1.48, 1.27, and 1.55, respectively).
  • Infection risk was highest within the first six months post-GCA diagnosis and in patients younger than 75 years.

Conclusions:

  • This study provides the first evidence of an increased systemic infection risk in GCA patients.
  • The heightened risk is particularly pronounced in the initial months after GCA diagnosis.
  • There is a critical need for novel GCA medications that enable steroid-sparing therapy to mitigate infection risk.
Abstract

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