Dynamic Changes in the Gut Microbiota Composition during Adalimumab Therapy in Patients with Ulcerative Colitis: Implications for Treatment Response Prediction and Therapeutic Targets

Author:

Oh Han Na1,Shin Seung Yong2,Kim Jong-Hwa2,Baek Jihye2,Kim Hyo Jong3,Lee Kang-Moon4,Park Soo Jung5,Kim Seok-Young1,Choi Hyung-Kyoon1,Kim Wonyong2,Sul Woo Jun1,Choi Chang Hwan2

Affiliation:

1. Chung-Ang University

2. Chung-Ang University College of Medicine

3. Kyung Hee University Hospital, Department of Gastroenterology

4. The Catholic University of Korea St. Vincent’s Hospital

5. Yonsei University College of Medicine

Abstract

Abstract

Background Little is known about the changes in the gut microbiota composition during anti-tumor necrosis factor-alpha (anti TNF-α) therapy. This study aimed to investigate the dynamics of gut microbiome changes during anti TNF-α (adalimumab) therapy in patients with ulcerative colitis (UC). Results The microbiota composition was affected by the disease severity and extent in patients with UC. Regardless of clinical remission status at each time point, patients with UC exhibited microbial community distinctions from healthy controls. Distinct amplicon sequence variants (ASVs) differences were identified throughout the course of ADA treatment at each time point. A notable reduction in gut microbiome dissimilarity was observed only in remitters. Remitters demonstrated a decrease in the relative abundances of Burkholderia-Caballeronia-Paraburkholderia and Staphylococcus, accompanied by an increase in Bifidobacterium and Dorea as the treatment progressed. Given the distribution of the 48 ASVs with high or low relative abundances in the pre-treatment samples according to clinical remission at week 8, a clinical remission at week 8 with a sensitivity and specificity of 72.4% and 84.3%, respectively, was predicted on the receiver operating characteristic curve (area under the curve, 0.851). Conclusions The gut microbiota undergoes diverse changes according to the treatment response during ADA treatment. These changes provide insights into predicting treatment responses to ADA and offer new therapeutic targets for UC.

Publisher

Springer Science and Business Media LLC

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