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Rapid prediction of 1-year efficacy of tofacitinib for treating refractory ulcerative colitis
( Hiromichi Shimizu ),( Toshimitsu Fujii ),( Shuji Hibiya ),( Maiko Motobayashi ),( Kohei Suzuki ),( Kento Takenaka ),( Eiko Saito ),( Masakazu Nagahori ),( Kazuo Ohtsuka ),( Mamoru Watanabe ) 대한장연구학회 2021 Intestinal Research Vol.19 No.1
Ami Kawamoto,Kento Takenaka,Shuji Hibiya,Yoshio Kitazume,Hiromichi Shimizu,Toshimitsu Fujii,Eiko Saito,Kazuo Ohtsuka,Ryuichi Okamoto 대한장연구학회 2024 Intestinal Research Vol.22 No.1
Background/Aims: Endoscopic activity confirmed by enteroscopy is associated with poor clinical outcome in Crohn’s disease (CD). We investigated which of the existing biomarkers best reflects endoscopic activity in CD patients including the small bowel, and whether their combined use can improve accuracy.Methods: One hundred and four consecutive patients with ileal and ileocolonic type CD who underwent balloon-assisted enteroscopy (BAE) from October 2021 to August 2022 were enrolled, with clinical and laboratory data prospectively collected and analyzed.Results: Hemoglobin, platelet count, C-reactive protein, leucine-rich alpha-2 glycoprotein (LRG), fecal calprotectin, and fecal hemoglobin all showed significant difference in those with ulcers found on BAE. LRG and fecal calprotectin showed the highest areas under the curve (0.841 and 0.853) for detecting ulcers. LRG showed a sensitivity of 78% and specificity of 80% at a cutoff value of 13 μg/mL, whereas fecal calprotectin showed a sensitivity of 91% and specificity of 67% at a cutoff value of 151 μg/g. Dual positivity for LRG and fecal calprotectin, as well as LRG and fecal hemoglobin, both predicted ulcers with an improved specificity of 92% and 100%. A positive LRG or fecal calprotectin/hemoglobin showed an improved sensitivity of 96% and 91%. Positivity for LRG and either of the fecal biomarkers was associated with increased risk of hospitalization, surgery, and relapse.Conclusions: The biomarkers LRG, fecal calprotectin, and fecal hemoglobin can serve as noninvasive and accurate tools for assessing activity in CD patients confirmed by BAE, especially when used in combination.