Long-term clinical outcomes and factors predictive of relapse after 5-aminosalicylate or sulfasalazine therapy in patients with mild-to-moderate ulcerative colitis

Hyunjung Lee, Eun Suk Jung, Jin Ha Lee, Sung Pil Hong, Tae Il Kim, Won Ho Kim, Jae Hee Cheon

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19 Citations (Scopus)


Background/Aims: Clinical outcomes and factors predictive of favorable response after 5-aminosalicylates or sulfasalazine (5-ASA/sulfasalazine) treatment alone have not been well established in the treatment of mild to moderate ulcerative colitis (UC). We evaluated the clinical course of Korean UC patients treated with 5-ASA/sulfasalazine as a maintenance therapy in terms of relapse and predictive factors of clinical relapse. Methodology: A total 256 UC patients, treated with 5-ASA/sulfasalazine at the Severance Hospital between January 2000 and December 2008, were analyzed retrospectively. We sought to investigate relapse rates and to determine independent predictors for relapse. Results: Of the 256 patients, 127 patients (49.6%) had a disease relapse. The cumulative relapse rate was 21.5% after 1 year, 36.5% after 2 years, 46.9% after 3 years and 59.8% after 5 years. On multivariate analysis, left-sided or extensive colitis at diagnosis (hazard ratio=1.46; 95% CI=1.01-2.10; p=0.04) and initial hemoglobin level <10.5g/dL (hazard ratio=0.43; 95% CI=0.22-0.81; p=0.01) were found to be independent factors for clinical relapse. Conclusions: Our study showed that both disease extent at diagnosis and anemia were major predictive factors for clinical relapse after 5-ASA/sulfasalazine therapy for Korean patients with mild to moderate UC.

Original languageEnglish
Pages (from-to)1415-1420
Number of pages6
Issue number117
Publication statusPublished - 2012 Jul 1


All Science Journal Classification (ASJC) codes

  • Hepatology
  • Gastroenterology

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