Correlation of 18F-FDG PET/CT assessments with disease activity and markers of inflammation in patients with early rheumatoid arthritis following the initiation of combination therapy with triple oral antirheumatic drugs
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This study evaluated the potential of functional imaging to monitor disease activity and response to treatment with disease-modifying antirheumatic drugs (DMARD) in DMARD-naive patients with early rheumatoid arthritis (RA).
The study involved 17 patients with active RA in whom combination therapy was initiated with methotrexate, sulfasalazine, hydroxychloroquine, and low-dose oral prednisolone. Clinical disease activity was assessed at screening, at baseline and after 2, 4, 8 and 12 weeks of therapy. 18F-FDG PET/CT of all joints was performed at baseline and after 2 and 4 weeks of therapy.
18F-FDG maximum standardized uptake values showed a reduction of 22 ± 13 % in 76 % of patients from baseline to week 2 and a reduction of 29 ± 13 % in 81 % of patients from baseline to week 4. The percentage decrease in 18F-FDG uptake from baseline to week 2 correlated with clinical outcome, as measured by the disease activity score (DAS-28) at week 12. In addition, changes in C-reactive protein levels and erythrocyte sedimentation rate were positively associated with changes shown by PET.
18F-FDG PET/CT findings after 2 and 4 weeks of triple combination oral DMARD therapy correlated with treatment efficacy and clinical outcome in patients with early RA. 18F-FDG PET/CT may help predict the therapeutic response to novel drug treatments.
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- Correlation of 18F-FDG PET/CT assessments with disease activity and markers of inflammation in patients with early rheumatoid arthritis following the initiation of combination therapy with triple oral antirheumatic drugs
European Journal of Nuclear Medicine and Molecular Imaging
Volume 40, Issue 3 , pp 403-410
- Cover Date
- Print ISSN
- Online ISSN
- Additional Links
- Antirheumatic therapy
- Positron emission tomography/computed tomography
- Rheumatoid arthritis
- Industry Sectors
- Author Affiliations
- 1. Turku PET Centre, Turku University Hospital and University of Turku, Kiinamyllynkatu 4-8, 20521, Turku, Finland
- 2. Department of Internal Medicine, Turku University Hospital, Turku, Finland
- 3. Department of Radiology, Turku University Hospital, Turku, Finland
- 4. Hoffmann-La Roche Inc., Nutley, NJ, USA
- 5. F. Hoffmann-La Roche Ltd., Basel, Switzerland