Inflammatory intestinal diseases · 2026
Leucine-Rich Alpha-2 Glycoprotein Is an Accurate Serum Marker for Endoscopic and Histological Remission in Ulcerative Colitis.
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Kawamoto Ami, Fujii Toshimitsu, Tanaka Shohei, Watanabe Sho, Tomii Shohei, Takenaka Kento, Hibiya Shuji, Morikawa Ryo, Tamura Akiko, Shimizu Hiromichi, Kurosaki Masayuki, Yauchi Tsunehito, Ohtsuka Kazuo, Okamoto Ryuichi
Аннотация
INTRODUCTION: Achieving both endoscopic and histological remission in ulcerative colitis (UC) is associated with improved clinical outcomes. There is a growing need for noninvasive methods to assess both remission states. This study investigates the utility of serum leucine-rich alpha-2 glycoprotein (LRG) as a biomarker for monitoring endoscopic and histological remission in patients with UC.
METHODS: Patients with UC who underwent colonoscopy from July 2020 to September 2021 at multiple centers in Japan were included to compare the accuracy of C-reactive protein (CRP) and LRG in detecting endoscopic and histological remission. Receiver operating characteristic curve analyses were performed and area under the curve (AUC) values were compared.
RESULTS: A total of 412 patients were identified. The median values of CRP and LRG were 0.07 mg/dL and 12.2 μg/mL, respectively. Endoscopic remission, as defined as Mayo endoscopic sub-score of 0 or 1, was observed in 188 patients, and histological remission, as defined as Geboes score <3.1, was observed in 156 patients. The AUC values for CRP and LRG for detecting endoscopic remission were 0.68 and 0.76, respectively, and the AUC values for CRP and LRG for detecting histological remission were 0.70 and 0.76, respectively. In both cases, the AUC for LRG was significantly higher than that of CRP (p < 0.0001). The optimal cutoff value of LRG for detecting histological remission was 13.4 μg/mL, with a sensitivity of 82% and a specificity of 58%.
CONCLUSION: LRG is superior to CRP in detecting both endoscopic and histological remission in patients with UC.
METHODS: Patients with UC who underwent colonoscopy from July 2020 to September 2021 at multiple centers in Japan were included to compare the accuracy of C-reactive protein (CRP) and LRG in detecting endoscopic and histological remission. Receiver operating characteristic curve analyses were performed and area under the curve (AUC) values were compared.
RESULTS: A total of 412 patients were identified. The median values of CRP and LRG were 0.07 mg/dL and 12.2 μg/mL, respectively. Endoscopic remission, as defined as Mayo endoscopic sub-score of 0 or 1, was observed in 188 patients, and histological remission, as defined as Geboes score <3.1, was observed in 156 patients. The AUC values for CRP and LRG for detecting endoscopic remission were 0.68 and 0.76, respectively, and the AUC values for CRP and LRG for detecting histological remission were 0.70 and 0.76, respectively. In both cases, the AUC for LRG was significantly higher than that of CRP (p < 0.0001). The optimal cutoff value of LRG for detecting histological remission was 13.4 μg/mL, with a sensitivity of 82% and a specificity of 58%.
CONCLUSION: LRG is superior to CRP in detecting both endoscopic and histological remission in patients with UC.