An elevated platelet count increases the risk of relapse in ulcerative colitis patients with mucosal healing

Asuka Nakarai, Jun Kato, Sakiko Hiraoka, Shiho Takashima, Toshihiro Inokuchi, Masahiro Takahara, Yuusaku Sugihara, Keita Harada, Hiroyuki Okada

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Background/Aims: Although mucosal healing (MH) has been considered a treatment goal for patients with ulcerative colitis (UC), the risk factors predictive of relapse in patients who achieve MH are unknown. Because the platelet count has been shown to be a marker of inflammation in inflammatory bowel diseases, this study aimed to assess whether the platelet count could predict relapse in UC patients with MH. Methods: A prospective observational study was performed. UC patients with MH were consecutively enrolled in the study and monitored for at least 2 years or until relapse. The correlation between the incidence of relapse and the platelet count at the time of study enrollment was examined. Results: In total, 43 patients were enrolled, and 14 patients (33%) relapsed. The median platelet count at the time of enrollment in the patients who relapsed significantly differed from that in the patients who did not relapse (27.2×104/ µL vs 23.8×104/µL, respectively; p=0.016). A platelet count >25.0×104/µL was a significant risk factor for relapse based on a multivariate analysis (hazard ratio, 4.85; 95% confidence interval, 1.07 to 25.28), and according to the Kaplan-Meier analysis, this cutoff could identify patients susceptible to relapse (p=0.041, log-rank test). Conclusions: The platelet count could be used as a predictor of relapse in UC patients with MH.

Original languageEnglish
Pages (from-to)420-425
Number of pages6
JournalGut and Liver
Issue number4
Publication statusPublished - Jul 1 2018



  • Colitis
  • Mucosal healing
  • Platelet count
  • Recurrence
  • Ulcerative

ASJC Scopus subject areas

  • Hepatology
  • Gastroenterology

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