Advanced or Unresectable Hepatocellular Carcinoma (HCC)

This is a randomized, open-label, multicenter Phase Ib/II registration trial designed to evaluate the efficacy and safety of HH-009 in patients with FGF19-positive hepatocellular carcinoma (HCC). The study will also assess pharmacokinetics, pharmacodynamics, immunogenicity, and exploratory biomarkers. Approximately 30 patients with FGF19-positive advanced HCC will be enrolled. Eligible participants will be randomized 1:1 to receive HH-009 at either 20 mg/kg or 30 mg/kg Q3W as monotherapy. Treatment will continue until disease progression, unacceptable toxicity, initiation of new anticancer therapy, study withdrawal, completion of two years of treatment, loss to follow-up, death, or other protocol-specified reasons, whichever occurs first.