A Phase III, Randomised, Open-label, Sponsor-blinded, Multicentre Study of Rilvegostomig in Combination With Bevacizumab With or Without Tremelimumab as First-line Treatment in Patients With Advanced Hepatocellular Carcinoma

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Investigational drug late phase More information Active drug More information Moderate burden on patient More information

Trial Details

Sponsor: AstraZeneca (industry)

Phase: 3

Start date: May 6, 2025

Planned enrollment: 1220

Trial ID: NCT06921785
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More trial details at ClinicalTrials.gov More info

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chevron Show for: Rilvegostomig (AZD2936)

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Goal: To determine whether rilvegostomig plus bevacizumab, with or without tremelimumab, improves overall survival compared with the standard atezolizumab plus bevacizumab regimen as first-line therapy for advanced hepatocellular carcinoma; and to characterize progression-free survival, response outcomes, safety, and the influence of PD-L1 expression on efficacy.

Patients: Adults with unresectable, locally advanced or metastatic HCC not amenable to curative or locoregional therapies, ECOG 0–1, BCLC B (not eligible for LRT) or C, Child-Pugh A, at least one measurable lesion, no prior systemic therapy for advanced disease, and adequate organ function. Key exclusions include active autoimmune disease requiring immunosuppression, clinically meaningful effusions, hepatic encephalopathy, active infections or primary immunodeficiency, CNS metastases, significant bleeding risk or recent therapeutic anticoagulation/antiplatelet therapy, prior anti-CTLA-4 or anti-TIGIT therapy, and specific non-typical HCC histologies.

Design: Global, multicenter, Phase III, three-arm, randomized, open-label, sponsor-blinded study with an initial single-arm safety lead-in for the triplet (rilvegostomig + bevacizumab + tremelimumab) followed by a randomized comparison among the two experimental arms and the active comparator. Randomization occurs in the first-line advanced HCC setting.

Treatments: Arm A: tremelimumab + rilvegostomig + bevacizumab. Arm B: rilvegostomig + bevacizumab. Arm C: atezolizumab + bevacizumab (active comparator standard-of-care regimen in first-line advanced HCC). Rilvegostomig (AZD2936) is a bispecific humanized IgG1 antibody targeting PD-1 and TIGIT to enhance anti-tumor T-cell activity; its Fc domain is engineered to minimize effector functions. Early-phase data in heavily pretreated NSCLC demonstrated acceptable tolerability at an IV dose every 3 weeks, a recommended phase 2 dose of 750 mg, dose-proportional exposure with high peripheral PD-1/TIGIT receptor occupancy, and preliminary antitumor activity with partial responses and stable disease observed. Tremelimumab is an anti-CTLA-4 antibody; atezolizumab is an anti–PD-L1 antibody; bevacizumab is an anti–VEGF-A monoclonal antibody.

Outcomes: Primary: Overall survival for Arm A versus Arm C. Key secondary: Overall survival for Arm B versus Arm C; progression-free survival and objective response rate per RECIST 1.1 for Arms A and B versus Arm C; comparative OS, PFS, ORR, and duration of response between Arm A and Arm B; correlation of PD-L1 expression with OS, PFS, ORR, and DOR for Arms A and B versus Arm C; immunogenicity (anti-drug antibodies) for tremelimumab and rilvegostomig; and safety via AE/SAE monitoring per CTCAE v5.0. Follow-up for efficacy and safety is up to approximately 6 years.

Burden on patient: Moderate. As a Phase III immunotherapy/antiangiogenic trial, clinic visits for intravenous infusions (every 3 weeks typical for these agents) and regular safety labs will be required, along with imaging at standard intervals (approximately every 6–9 weeks early, then less frequently), similar to current standard-of-care schedules. Additional procedures include baseline and on-treatment tumor assessments, and blood draws for immunogenicity testing; pharmacokinetic-intense sampling is not indicated. No mandated additional biopsies are described beyond standard evaluations. Travel and time commitments align with other first-line ICI + bevacizumab regimens, with added visits during the safety lead-in for those enrolled in that phase.

Last updated: Oct 2025

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