Haitao Sun, Jianbo Li, Lei Li, Peng Wang, Qiying Tang, Tianyu Lu, Jun Han, Zongyu Xie, Yiheng Zhou, Kai Liu, Mengsu Zeng, Minping Hong, Yaolin Xu, Jianjun Zhou
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The performance of the model was assessed using Harrell's C-index, time-dependent area under the curve (AUC), and calibration curves, and was compared with existing clinical prediction metrics, including the 8<sup>th</sup> American Joint Committee on Cancer (AJCC) staging and CA19-9 levels.</p><p><strong>Results: </strong>540 PDAC patients were split into a development cohort (n = 282) and an internal validation cohort (n = 122), with 136 patients forming external cohort A (n = 80) and B (n = 56). The model, incorporating CA19-9 (hazard ratio (HR), 1.604, p = 0.047), margin (HR, 1.918, p = 0.001), tumor size (HR, 1.308, p = 0.003), and venous enhancement ratio (VER) (HR, 0.605, p = 0.047), was developed, showing superior predictive accuracy for OS with C-indexes of 0.73, 0.70, and 0.70, and 0.68 across four cohorts. The model outperformed the 8th AJCC staging and CA19-9 alone across validation cohorts (p < 0.001). High-risk patients exhibit the worst overall survival (OS) and a higher frequency of adverse pathological features, but benefited significantly from adjuvant therapy, with improved survival outcomes.</p><p><strong>Conclusion: </strong>The M-PRiSM model effectively predicts postoperative OS and identifies PDAC patients likely to benefit from adjuvant treatment.</p><p><strong>Critical relevance statement: </strong>The M-PRiSM model, utilizing MRI and clinical features, enables preoperative risk stratification for overall survival in pancreatic ductal adenocarcinoma, offering a generalizable tool to guide personalized adjuvant therapy and enhance prognostic assessment.</p><p><strong>Key points: </strong>The M-PRiSM model can effectively predict pancreatic ductal adenocarcinoma survival. The M-PRiSM model showed strong generalizability in external validations. 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引用次数: 0
摘要
目的:建立并验证基于磁共振成像(MRI)的胰腺风险分层模型(M-PRiSM),用于胰腺导管腺癌(PDAC)的预后预测和治疗指导。材料和方法:在这项回顾性多中心研究中,共入组540例PDAC患者。Cox比例风险模型用于识别重要的临床放射学预测因子,并开发M-PRiSM风险评分系统。采用Harrell’s c指数、曲线下随时间变化的面积(AUC)和校准曲线对模型的性能进行评估,并与现有的临床预测指标(包括第8届美国癌症联合委员会(AJCC)分期和CA19-9水平)进行比较。结果:540例PDAC患者被分为发展队列(n = 282)和内部验证队列(n = 122),其中136例患者组成外部队列a (n = 80)和B (n = 56)。该模型纳入了CA19-9(风险比(HR), 1.604, p = 0.047)、边缘(HR, 1.918, p = 0.001)、肿瘤大小(HR, 1.308, p = 0.003)和静脉增强比(VER) (HR, 0.605, p = 0.047),在4个队列中,c指数分别为0.73、0.70、0.70和0.68,显示出较好的OS预测准确性。该模型在验证队列中的表现优于第8期AJCC分期和单独CA19-9 (p)结论:M-PRiSM模型可有效预测术后OS并识别可能从辅助治疗中获益的PDAC患者。关键相关性声明:M-PRiSM模型利用MRI和临床特征,实现了胰腺导管腺癌的术前总生存风险分层,为指导个性化辅助治疗和增强预后评估提供了一种通用工具。重点:M-PRiSM模型能有效预测胰腺导管腺癌患者的生存。M-PRiSM模型在外部验证中表现出较强的泛化性。M-PRiSM模型对患者进行分层,以指导辅助治疗以改善预后。
MRI-based risk stratification for predicting overall survival in pancreatic ductal adenocarcinoma.
Purpose: To develop and validate a magnetic resonance imaging (MRI)-based pancreatic risk stratification model (M-PRiSM) for prognosis prediction and therapy guidance in pancreatic ductal adenocarcinoma (PDAC).
Materials and methods: In this retrospective multicenter study, a total of 540 patients with PDAC were enrolled. A Cox proportional hazards model was used to identify significant clinical-radiological predictors and develop an M-PRiSM risk score system. The performance of the model was assessed using Harrell's C-index, time-dependent area under the curve (AUC), and calibration curves, and was compared with existing clinical prediction metrics, including the 8th American Joint Committee on Cancer (AJCC) staging and CA19-9 levels.
Results: 540 PDAC patients were split into a development cohort (n = 282) and an internal validation cohort (n = 122), with 136 patients forming external cohort A (n = 80) and B (n = 56). The model, incorporating CA19-9 (hazard ratio (HR), 1.604, p = 0.047), margin (HR, 1.918, p = 0.001), tumor size (HR, 1.308, p = 0.003), and venous enhancement ratio (VER) (HR, 0.605, p = 0.047), was developed, showing superior predictive accuracy for OS with C-indexes of 0.73, 0.70, and 0.70, and 0.68 across four cohorts. The model outperformed the 8th AJCC staging and CA19-9 alone across validation cohorts (p < 0.001). High-risk patients exhibit the worst overall survival (OS) and a higher frequency of adverse pathological features, but benefited significantly from adjuvant therapy, with improved survival outcomes.
Conclusion: The M-PRiSM model effectively predicts postoperative OS and identifies PDAC patients likely to benefit from adjuvant treatment.
Critical relevance statement: The M-PRiSM model, utilizing MRI and clinical features, enables preoperative risk stratification for overall survival in pancreatic ductal adenocarcinoma, offering a generalizable tool to guide personalized adjuvant therapy and enhance prognostic assessment.
Key points: The M-PRiSM model can effectively predict pancreatic ductal adenocarcinoma survival. The M-PRiSM model showed strong generalizability in external validations. The M-PRiSM model stratifies patients for guiding adjuvant therapy for improved outcomes.
期刊介绍:
Insights into Imaging (I³) is a peer-reviewed open access journal published under the brand SpringerOpen. All content published in the journal is freely available online to anyone, anywhere!
I³ continuously updates scientific knowledge and progress in best-practice standards in radiology through the publication of original articles and state-of-the-art reviews and opinions, along with recommendations and statements from the leading radiological societies in Europe.
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The journal went open access in 2012, which means that all articles published since then are freely available online.