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Abstract
BACKGROUND: The aim of this study was to develop a predictive model to identify individuals most likely to derive overall survival (OS) benefit from adjuvant chemotherapy (AC) after hepatic resection of intrahepatic cholangiocarcinoma (ICC).METHODS: Patients who underwent hepatic resection of ICC between 1990 and 2020 were identified from a multi-institutional database. Factors associated with worse OS were identified and incorporated into an online predictive model to identify patients most likely to benefit from AC.RESULTS: Among 726 patients, 189 (26.0%) individuals received AC. Factors associated with OS on multivariable analysis included CA19-9 (Hazard Ratio [HR]1.17, 95%CI 1.04-1.31), tumor burden score (HR1.09, 95%CI 1.04-1.15), T-category (T2/3/4, HR1.73, 95%CI 1.73-2.64), nodal disease (N1, HR3.80, 95%CI 2.02-7.15), tumor grade (HR1.88, 95%CI 1.00-3.55), and morphological subtype (HR2.19, 95%CI 1.08-4.46). A weighted predictive score was devised and made available online (https://yutaka-endo.shinyapps.io/ICCrisk_model_for_AC/). Receipt of AC was associated with a survival benefit among patients at high/medium-risk (high: no AC, 0% vs. AC, 20.6%; medium: no AC, 36.4% vs. 40.8%; both p<0.05) but not low-risk (low: no AC, 65.1% vs. AC, 65.1%; p=0.73) tumors.CONCLUSION: An online predictive model based on tumor characteristics may help identify which patients may benefit the most from AC following resection of ICC.
View details for DOI 10.1016/j.hpb.2022.10.011
View details for PubMedID 36396550