Comparison of 1-Year Clinical Course in Patients With Newly Diagnosed Inflammatory Bowel Disease Between Vietnam and Korea: A Multinational, Multicenter Retrospective Cohort Study

IF 1.7 Q3 GASTROENTEROLOGY & HEPATOLOGY JGH Open Pub Date : 2025-02-17 DOI:10.1002/jgh3.70106

Luan Minh Dang, Eun Soo Kim, Kyeong Ok Kim, Yoo Jin Lee, Hoang Huu Bui, Chuong Dinh Nguyen, Chi Thi Nguyen, Nam Hoai Nguyen, Hien Thi-Thu Nguyen, Nga Thi Dinh, Lien Thi-Phuong Nguyen, Khien Van Vu, Minh Cuong Duong

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Abstract

Background/Aims

The differences in the clinical course of Crohn's disease (CD) and ulcerative colitis (UC) among Asian countries remain unknown. Thus, we compared the clinical characteristics, treatment, and one-year outcomes of newly diagnosed inflammatory bowel disease (IBD) patients between Vietnam and Korea.

Methods

A retrospective cohort study was conducted at seven tertiary hospitals in these countries between January 2020 and January 2021. Data on demographics, diseases, treatment, and outcomes during 1 year after diagnosis were collected.

Results

Among 225 patients (60 from Vietnam and 165 from Korea), 140 and 85 were diagnosed with UC and CD, respectively. Severe activity (p < 0.01) and extensive colitis (p < 0.01) in UC, along with complicated behavior in CD (p < 0.01), were more frequently observed in Vietnamese patients compared to Korean patients. The proportion of UC patients using corticosteroids (p < 0.01), immunomodulators (p < 0.01), and biologics (p = 0.026) was significantly higher in Vietnam. In contrast, the proportion of UC patients using topical mesalamine (p < 0.01) was significantly higher in Korea. The intervals from CD diagnosis to biologic therapy initiation (p = 0.04), as well as from UC diagnosis to corticosteroid (p < 0.01), immunomodulator (p < 0.01), and biologic therapy (p < 0.01) commencement, were significantly shorter in Vietnamese patients compared to Korean patients. However, the proportions of endoscopic healing and complications at 1-year follow-up did not significantly differ between the countries (p > 0.05).

Conclusions

Although Vietnamese IBD patients had higher baseline clinical and phenotypic severity than their Korean counterparts, no significant differences in short-term outcomes were observed, potentially reflecting the impact of the higher rate and early biologic usage in Vietnamese patients.

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