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Proton Beam Radiotherapy Followed by Tecentriq and Avastin for Primary Liver Cancer With Vp2-4 Portal Vein Invasion

NCT05625893 · Status: COMPLETED · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 63

Last updated 2026-04-23

No results posted yet for this study

Summary

This study is investigator initiated, single-institution, prospective, phase 2 open-label study to determine the efficacy and safety of combination therapy of atezolizumab/bevacizumab and proton beam therapy to portal vein tumor thrombosis with or without main primary tumor in patients with stage 3 or higher hepatocellular carcinoma (HCC) with Vp2-4 portal vein invasion who had not undergone systemic therapy for HCC. The primary endpoint of this study is progression-free survival and secondary endpoints are overall survival (OS), time to progression (TTP), objective response rate, disease control rate (DCR), and time to local disease progression (LTP).

Conditions

Interventions

RADIATION

PBT and atezolizumab/bevacizumab

Atezolizumab 1200 mg and bevacizumab 15 mg/Kg is administered IV infusion every 3 weeks. Proton beam therapy 30 - 50 Gy/5 fractions to portal vein tumor thrombosis with or without main primary tumor after 1 week (+/- 7 days) of 2nd cycle of atezolizumab and bevacizumab The follow-up phase begins when the decision to discontinue study is made. The follow-up phase is defined as the day after the end of study treatment until the day the subject dies.

Sponsors & Collaborators

  • Samsung Medical Center

    lead OTHER

Principal Investigators

  • Jeong Il Yu, MD, PhD · Samsung Medical Center

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
20 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2023-01-15
Primary Completion
2025-11-30
Completion
2026-03-30

Countries

  • South Korea

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05625893 on ClinicalTrials.gov