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Published on: October 16, 2013
CRP correlates with clinical score in ulcerative colitis but not in Crohn's disease
Alexander D Rodgers1, Adrian G Cummins
1Department of Gastroenterology and Hepatology, The Queen Elizabeth Hospital, Woodville Road, Woodville South, South Australia 5011, Australia.
Insights
This study found C-reactive protein (CRP) correlates well with clinical scores in ulcerative colitis but poorly in Crohn's disease, impacting inflammatory bowel disease management.
Area of Science:
- Gastroenterology
- Clinical Medicine
- Biomarkers
Background:
- Inflammatory bowel disease (IBD) management relies on clinical scoring systems and biomarkers.
- C-reactive protein (CRP) is a common biomarker for inflammation.
Purpose of the Study:
- To prospectively evaluate the correlation between clinical scoring systems and CRP levels in patients with Crohn's disease (CD) and ulcerative colitis (UC).
Main Methods:
- Prospective evaluation of 40 CD patients using the modified Harvey-Bradshaw index and 29 UC patients using the Lichtiger score.
- Correlation analysis between clinical scores and CRP levels, including log-transformed CRP values.
Main Results:
- In UC, CRP elevation correlated linearly with disease severity (quiescent to severe), except for proctitis.
- In CD, CRP elevation showed a poor correlation with clinical scores, especially in quiescent, fibrostenotic, or ileal disease.
Conclusions:
- Clinical scores correlate well with CRP in UC, aiding disease assessment.
- Clinical scores show poor correlation with CRP in CD, suggesting limitations in assessing disease activity using this biomarker alone.
Abstract:
The aim of this study was to prospectively evaluate the correlation between clinical scoring systems and C-reactive protein (CRP) in inflammatory bowel disease. The modified Harvey-Bradshaw index was used in 40 patients (58 assessments) with Crohn's disease, and the Lichtiger score in 29 patients (36 assessments) with ulcerative colitis. In ulcerative colitis, CRP was elevated in 14%, 42%, 64%, and 83%, respectively, of subjects with quiescent, mild, moderate, and severe disease. There was a linear correlation of log(CRP) with clinical score except for proctitis. In Crohn's disease, CRP was elevated in 54%, 70%, 75%, and 100%, respectively, of subjects with quiescent, mild, moderate, and severe disease. We conclude that the clinical score has a good correlation with CRP in ulcerative colitis except for proctitis, whereas clinical score has a poor correlation with CRP in Crohn's disease, particularly in those with clinically quiescent, fibrostenotic, and ileal disease.
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