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CT-based radiomics signature of visceral adipose tissue for prediction of disease progression in patients with Crohn's disease: A multicentre cohort study

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机构: [a]Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan II Road, Guangzhou 510080, People’s Republic of China [b]Medical AI Lab, School of Biomedical Engineering, Medical School, Shenzhen University, Shenzhen 518000, People’s Republic of China [c]Department of Radiology, The First Affiliated Hospital of Shantou University Medical College, 57 Changping Road, Shantou, Guangdong 515000, People’s Republic of China [d]Department of Radiology, The First People’s Hospital of Foshan City, No.81, Lingnan Dadao North, Foshan City, Guangdong Province 528000, People’s Republic of China [e]Department of Radiology, Jiangmen Central Hospital, Guangdong Medical University, 23 Beijie Haibang Street, Jiangmen 529030, People’s Republic of China [f]Department of Radiology, The Third Affiliated Hospital of Guangzhou Medical University, 63 Duobao Road, Guangzhou 510150, People’s Republic of China [g]Department of Radiology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), No.19 Xiuhua Road, Xiuying District, Haikou, Hainan 570311, People’s Republic of China [h]Department of Radiology, Affiliated Dongguan People’s Hospital, Southern Medical University, No. 78 Wandao Road, Gongguan 523000, People’s Republic of China [i]Medical Imaging Department, The First Affiliated Hospital, Kunming Medical University, Xi Chang Road 295th, Kunming 650000, People’s Republic of China [j]Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan II Road, Guangzhou 510080, People’s Republic of China
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Visceral adipose tissue (VAT) is involved in the pathogenesis of Crohn's disease (CD). However, data describing its effects on CD progression remain scarce. We developed and validated a VAT-radiomics model (RM) using computed tomography (CT) images to predict disease progression in patients with CD and compared it with a subcutaneous adipose tissue (SAT)-RM.This retrospective study included 256 patients with CD (training, n = 156; test, n = 100) who underwent baseline CT examinations from June 19, 2015 to June 14, 2020 at three tertiary referral centres (The First Affiliated Hospital of Sun Yat-Sen University, The First Affiliated Hospital of Shantou University Medical College, and The First People's Hospital of Foshan City) in China. Disease progression referred to the development of penetrating or stricturing diseases or the requirement for CD-related surgeries during follow-up. A total of 1130 radiomics features were extracted from VAT on CT in the training cohort, and a machine-learning-based VAT-RM was developed to predict disease progression using selected reproducible features and validated in an external test cohort. Using the same modeling methodology, a SAT-RM was developed and compared with the VAT-RM.The VAT-RM exhibited satisfactory performance for predicting disease progression in total test cohort (the area under the ROC curve [AUC] = 0.850, 95% confidence Interval [CI] 0.764-0.913, P < 0.001) and in test cohorts 1 (AUC = 0.820, 95% CI 0.687-0.914, P < 0.001) and 2 (AUC = 0.871, 95% CI 0.744-0.949, P < 0.001). No significant differences in AUC were observed between test cohorts 1 and 2 (P = 0.673), suggesting considerable efficacy and robustness of the VAT-RM. In the total test cohort, the AUC of the VAT-RM for predicting disease progression was higher than that of SAT-RM (AUC = 0.786, 95% CI 0.692-0.861, P < 0.001). On multivariate Cox regression analysis, the VAT-RM (hazard ratio [HR] = 9.285, P = 0.005) was the most important independent predictor, followed by the SAT-RM (HR = 3.280, P = 0.060). Decision curve analysis further confirmed the better net benefit of the VAT-RM than the SAT-RM. Moreover, the SAT-RM failed to significantly improve predictive efficacy after it was added to the VAT-RM (integrated discrimination improvement = 0.031, P = 0.102).Our results suggest that VAT is an important determinant of disease progression in patients with CD. Our VAT-RM allows the accurate identification of high-risk patients prone to disease progression and offers notable advantages over SAT-RM.This study was supported by the National Natural Science Foundation of China, Guangdong Basic and Applied Basic Research Foundation, Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Nature Science Foundation of Shenzhen, and Young S&T Talent Training Program of Guangdong Provincial Association for S&T.For the Chinese translation of the abstract see Supplementary Materials section.© 2022 The Author(s).

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大类 | 1 区 医学
小类 | 1 区 医学:内科
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大类 | 1 区 医学
小类 | 1 区 医学:内科
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Q1 MEDICINE, GENERAL & INTERNAL
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Q1 MEDICINE, GENERAL & INTERNAL

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第一作者机构: [a]Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan II Road, Guangzhou 510080, People’s Republic of China
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通讯机构: [a]Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan II Road, Guangzhou 510080, People’s Republic of China [b]Medical AI Lab, School of Biomedical Engineering, Medical School, Shenzhen University, Shenzhen 518000, People’s Republic of China [j]Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan II Road, Guangzhou 510080, People’s Republic of China [*1]Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan Road 2nd, Guangzhou 510080, People’s Republic of China. [*2]Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan Road 2nd, Guangzhou 510080, People’s Republic of China [*3]Medical AI Lab, School of Biomedical Engineering, Medical School, Shenzhen University. Block A2, Xili Campus of Shenzhen University, 1066 Xueyuan Avenue, Shenzhen 518000, People’s Republic of China.
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