Survival prediction in sigmoid-Colon-cancer patients with liver metastasis: a prospective cohort study

医学 列线图 内科学 比例危险模型 结直肠癌 肿瘤科 转移 一致性 阶段(地层学) 流行病学 T级 队列 癌症 古生物学 生物
作者
Shuai Shao,Dan Tian,Mingyang Li,Shanshan Wu,David Zhang
出处
期刊:JNCI Cancer Spectrum [Oxford University Press]
标识
DOI:10.1093/jncics/pkae080
摘要

Abstract Purpose Sigmoid colon cancer (SCC) is a common type of colorectal cancer, frequently leading to liver metastasis. Predicting cause-specific survival (CSS) and overall survival (OS) in SCC with liver metastasis (SCCLM) patients is challenging due to the lack of suitable models. Methods Data from SCCLM patients (2010-2017) in the Surveillance, Epidemiology, and End Results (SEER) Program were recruited. Patients were split into training and validation groups (7:3). Prognostic factors were identified using competing risk and Cox proportional hazards models, and nomograms for CSS and OS were developed. Model performance was evaluated with the concordance index and calibration curves, with a two-sided p < .05 was considered statistically significant. Results 4,981 SCCLM patients were included, with a median follow-up of 20 months (IQR: 9-33 months). During follow-up, 72.25% of patients died (68.44% from SCC, 3.81% from other causes). Age, race, grade, T stage, N stage, surgery, chemotherapy, CEA, tumor deposits, lung metastasis, and tumor size were prognostic factors for both CSS and OS. The models demonstrated good discrimination and calibration performance, with C-index values of 0.79 (95% CI: 0.78-0.80) for CSS and 0.74 (95% CI: 0.73-0.75) for OS. A web-based application for real-time CSS predictions was created, accessible at https://shuaishao.shinyapps.io/SCCLM/. Conclusion Prognostic factors for SCCLM patients were identified basing on SEER database, and nomograms for CSS and OS showed good performance. A web-based application was developed to predict SCCLM-specific survival, aiding in survival risk stratification.

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