Biomarker Validation for Treatment Efficacy and Recurrence Prediction in Hepatocellular Carcinoma

Observational Model: Cohort Time Perspective: Other (prospective and retrospective data/sample collection) Primary Purpose: Other (biomarker validation for treatment response and recurrence prediction) Biospecimen Retention: Samples With DNA Biospecimen Description: Residual tissue, wax blocks/slides, residual puncture/surgical materials, and residual blood from routine testing; additional peripheral blood, 5-10 mL per collection, may be collected if needed after separate informed consent. Enrollment: 500 (anticipated) Study Population: Adult patients with HCC confirmed by imaging and/or pathology at participating centers, receiving standard antitumor therapy and planned for systematic follow-up. Sampling Method: Not specified in the protocol.