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Establishing a Competing Risk Regression Nomogram Model for Survival Data
Published on: October 23, 2020
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Development and validation of a nomogram for assessing hepatocellular carcinoma risk after SVR in hepatitis C
Shanshan Xu1, Lixia Qiu1, Liang Xu2
1The Third Unit, Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, 100069, People's Republic of China.
Infectious Agents and Cancer
|April 25, 2024
Summary
Hepatitis C patients with advanced fibrosis or cirrhosis face a high risk of liver cancer (HCC) even after treatment. A new nomogram identifies risk factors like age, gender, albumin, and liver stiffness to personalize HCC screening, improving upon current burdensome guidelines.
Area of Science:
- Hepatology
- Oncology
- Medical Diagnostics
Background:
- Hepatocellular carcinoma (HCC) is a significant risk for Hepatitis C patients with advanced fibrosis or cirrhosis, persisting even after sustained virological response (SVR).
- Current clinical guidelines recommend burdensome lifelong HCC screening every six months for these patients.
- There is a need for improved risk stratification to optimize HCC surveillance strategies.
Purpose of the Study:
- To develop and validate a predictive nomogram for hepatocellular carcinoma (HCC) risk in Hepatitis C patients with advanced fibrosis/cirrhosis post-SVR.
- To refine the current HCC screening approach by accurately stratifying patient risk.
Main Methods:
- Prospective study identifying HCC risk factors through univariate and multivariate analyses.
- Development and validation of a nomogram to assess HCC risk post-SVR.
- Analysis of patient data including age, gender, serum albumin, and liver stiffness measurement (LSM).
Main Results:
- Older age, male gender, low serum albumin, and high LSM were independent predictors of HCC development.
- The nomogram demonstrated strong predictive accuracy with a C-index of 0.81 and favorable time-dependent AUROCs (3-year: 0.84, 5-year: 0.83, 7-year: 0.81).
- Patients were stratified into low, intermediate, and high-risk groups with distinct annual HCC incidence rates (0.18%, 1.29%, and 4.45%, respectively).
Conclusions:
- Identified key risk factors for HCC post-SVR in Hepatitis C patients with advanced fibrosis/cirrhosis: older age, male gender, low serum albumin, and high LSM.
- Developed a validated nomogram utilizing these factors to accurately stratify HCC risk.
- The nomogram enables personalized screening plans by classifying patients into risk categories, potentially optimizing surveillance strategies.
