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Testing Immunotherapy With or Without Stereotactic Body Radiation Therapy in Patients With Advanced Liver Cancer, HELIO-RT Trial

Phase III Randomized Trial of IO-Based Systemic Treatment +/- Liver SBRT in Hepatocellular Cancer With Macrovascular Invasion (HELIO-RT)

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07166406
Enrollment
226
Registered
2025-09-10
Start date
2026-02-26
Completion date
2034-03-10
Last updated
2026-08-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Advanced Hepatocellular Carcinoma, Stage III Hepatocellular Carcinoma AJCC v8, Stage IV Hepatocellular Carcinoma AJCC v8

Brief summary

This phase III trial compares the effect of immunotherapy (IO) with stereotactic body radiation therapy (SBRT) to IO alone in treating patients with liver cancer (hepatocellular cancer) that may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body (advanced). The usual approach is treatment with IO-based drug combinations, such as atezolizumab and bevacizumab, durvalumab and tremelimumab, or ipilimumab and nivolumab. IO with monoclonal antibodies, such as durvalumab, tremelimumab, atezolizumab, nivolumab and ipilimumab, may help the body's immune system attack the tumor, and may interfere with the ability of tumor cells to grow and spread. Bevacizumab is in a class of medications called antiangiogenic agents. It works by stopping the formation of blood vessels that bring oxygen and nutrients to tumor. This may slow the growth and spread of tumor cells. Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill cancer cells and shrink tumors. SBRT is a type of external radiation therapy that uses special equipment to position a patient and precisely deliver radiation to tumors in the body (except the brain). The total dose of radiation is divided into smaller doses given over several days. This type of radiation therapy helps spare normal tissue. Giving IO with SBRT may be more effective than IO alone in helping patients with advanced hepatocellular cancer live longer.

Detailed description

PRIMARY OBJECTIVE: I. To determine if liver SBRT in combination with IO-based systemic therapy improves survival compared to IO-based systemic therapy alone, in patients with hepatocellular cancer with macrovascular invasion. SECONDARY OBJECTIVES: I. To evaluate and compare progression-free survival between treatment arms. II. To evaluate and compare objective response rate between treatment arms. III. To evaluate and compare vascular recanalization between treatment arms. IV. To evaluate and compare biochemical decline in alpha-fetoprotein (AFP) between treatment arms. V. To evaluate and compare toxicity within and between treatment arms. VI. To evaluate and compare liver decompensation per Child Pugh score between treatment arms. VII. To evaluate and compare liver decompensation per modified albumin-bilirubin (ALBI) (mALBI) score between treatment arms. HEALTH-RELATED QUALITY OF LIFE (HRQOL) OBJECTIVES: I. Primary: To compare Functional Assessment of Cancer Therapy-Hepatobiliary (FACT-Hep) total score at 6 months between the treatment arms. II. Secondary: To evaluate and compare quality-adjusted survival using European Quality of Life Five Dimension (EQ-5D) between treatment arms. (Will be done if the overall survival primary endpoint is met and/or if EQ-5D significantly differs between treatment arms.) III. Exploratory: To evaluate FACT-Hep total scores over time between the treatment arms. EXPLORATORY OBJECTIVES: I. Biospecimen collection for future correlative analyses. OUTLINE: Patients are randomized to 1 of 2 arms. ARM 1: Patients receive 1 of 3 IO-based systemic treatments per physician's decision. TREATMENT A: Patients receive atezolizumab and bevacizumab intravenously (IV) every 3 weeks in the absence of disease progression or unacceptable toxicity. TREATMENT B: Patients receive tremelimumab IV once and durvalumab IV every 4 weeks in the absence of disease progression or unacceptable toxicity. TREATMENT C: Patients receive nivolumab and ipilimumab IV every 3 weeks for up to 4 doses followed by nivolumab IV every 4 weeks in the absence of disease progression or unacceptable toxicity. ARM 2: Patients receive 1 of 3 IO-based systemic treatments per physician's decision. TREATMENT A: Patients undergo liver SBRT once daily (QD), once every other day (QOD), or twice weekly for 5 fractions over up to 3 weeks. Patients also receive atezolizumab and bevacizumab IV every 3 weeks in the absence of disease progression or unacceptable toxicity. TREATMENT B: Patients undergo liver SBRT QD, QOD, or twice weekly for 5 fractions over up to 3 weeks. Patients also receive tremelimumab IV once and durvalumab IV every 4 weeks in the absence of disease progression or unacceptable toxicity. TREATMENT C: Patients undergo liver SBRT QD, QOD, or twice weekly for 5 fractions over up to 3 weeks. Patients also receive nivolumab and ipilimumab IV every 3 weeks for up to 4 doses followed by nivolumab IV every 4 weeks in the absence of disease progression or unacceptable toxicity. Additionally, patients undergo blood sample collection, chest computed tomography (CT) and CT and/or magnetic resonance imaging (MRI) throughout the study and may also undergo positron emission tomography (PET)/CT prior to registration. After completion of study treatment, patients are followed every 3 months for 2 years, every 6 months for 3 years then yearly.

Interventions

BIOLOGICALAtezolizumab

Given IV

BIOLOGICALBevacizumab

Given IV

PROCEDUREBiospecimen Collection

Undergo blood sample collection

PROCEDUREComputed Tomography

Undergo CT and PET/CT

BIOLOGICALDurvalumab

Given IV

BIOLOGICALIpilimumab

Given IV

PROCEDUREMagnetic Resonance Imaging

Undergo MRI

BIOLOGICALNivolumab

Given IV

PROCEDUREPositron Emission Tomography

Undergo PET/CT

OTHERQuestionnaire Administration

Ancillary studies

RADIATIONStereotactic Body Radiation Therapy

Undergo liver SBRT

BIOLOGICALTremelimumab

Given IV

Sponsors

NRG Oncology
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* PRIOR TO STEP 1 REGISTRATION: * Diagnosis of hepatocellular carcinoma (HCC) by at least 1 criterion listed below: * Pathologically (histologically or cytologically) proven diagnosis of HCC (strongly recommended) * Radiographically proven (American Association for the Study of Liver Diseases \[AASLD\] criteria) diagnosis of HCC by multiphasic MRI and/or CT scan is allowed. * For patients with a prior or concurrent malignancy, pathologic confirmation of hepatocellular cancer is required. * HCC macrovascular invasion, defined as enhancing vascular thrombosis demonstrating arterial enhancement and venous or delayed venous washout on multiphasic MRI and/or CT is required. * Presence of extrahepatic metastatic disease on CT chest and CT or MRI pelvis, or PET/CT chest/abdomen/pelvis is permitted. * 5 or fewer discrete intrahepatic parenchymal foci of HCC. * Total maximal sum of hepatocellular carcinoma tumors, as a single conglomerate, multiple lesions, or infiltrative HCC \< 20 cm in total summed diameter. * No direct primary tumor extension into the stomach, duodenum, small bowel, or large bowel. * No known fibrolamellar HCC, sarcomatoid HCC, or biphenotypic HCC. * Child-Pugh class A or B7 liver function. * Age ≥ 18. * Eastern Cooperative Oncology Group (ECOG) performance status of 0-2. * Not pregnant and not nursing * Negative urine or serum pregnancy test (in persons of childbearing potential) within 30 days prior to registration. Childbearing potential is defined as any person who has experienced menarche and who has not undergone surgical sterilization (hysterectomy or bilateral oophorectomy) or who is not postmenopausal. * Absolute neutrophil count (ANC) ≥ 1,500 cells/mm\^3. * Platelets ≥ 60,000 cells/mm\^3. * Hemoglobin ≥ 8g/dl (Note: The use of transfusion or other intervention to achieve hemoglobin \[Hgb\] ≥ 8g/dl is acceptable). * Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 6 x institutional upper limit of normal (ULN). * Total bilirubin \< 4 x institutional ULN. * Creatinine clearance (CrCL) ≥ 30 mL/min/1.73 m\^2 by the Cockcroft-Gault formula. * For treatment of HCC: * Prior surgical resection, transarterial chemoembolization (TACE), and ablation are permitted. * No prior systemic therapy or transarterial radioembolization (TARE) for HCC. * No history of liver transplantation. * For prior treatment for any malignancy: * Prior systemic therapy for a different cancer is allowable, except for prior immunotherapy. * No prior radiotherapy to the region of the study cancer that would result in significant overlap of radiation therapy fields that would lead to excessive cumulative toxicity at the discretion of the investigator. * No medical contraindication to the standard of care immunotherapy. * For patients to be treated with atezolizumab/bevacizumab: * No history of a gastrointestinal (GI) bleed or other clinically significant bleeding event within 6 months prior to study registration. * Systemic immunostimulatory agents (including, but not limited to, interferons and interleukin-2 \[IL-2\]) are prohibited within 4 weeks or five drug elimination half-lives (whichever is longer) prior to registration and during the study period. * No history of allergic reaction to the systemic therapy agent(s), compounds of similar chemical or biologic composition to the systemic therapy agent(s) (or any of its excipients). * PRIOR TO STEP 2 RANDOMIZATION: * Obtain confirmation of payment coverage (insurance or other) for both possible treatment arms.

Design outcomes

Primary

MeasureTime frameDescription
Overall survival (OS)From the date of randomization to the date of death or last follow-up, assessed up to 5 yearsWill be estimated by the Kaplan-Meier method (Kaplan 1958). The distributions of the OS estimates between the two arms will be compared using a log-rank test. The Cox regression model will be used to analyze the effects of factors, in addition to treatment, including, but not limited to stratification factors, which may be associated with OS. The primary analysis will happen after at least 150 OS events (deaths) have occurred and will be tested with a 1-sided significance level of 0.022 (level based on not having stopped at either of the 2 planned interim analyses).

Secondary

MeasureTime frameDescription
Objective response rate (ORR)Up to 5 yearsDefined as having a complete or partial response. ORR will be compared between treatment arms using a chi-squared test. Duration of response will also be reported.
Vascular recanalization (VR)Up to 5 yearsDefined as having a complete or partial vascular thrombosis response. The VR proportion for each treatment arm will be determined and compared between treatment arms using a chi-squared test. Time to best VR response before progression and duration of VR response will be reported, but no statistical testing will be done.
Short-term toxicityUp to 90 days from randomizationDefined as grade ≥ 4 adverse events (AEs). Will be compared between the treatment arms using a Z-test.
Progression-free survival (PFS)From the date of randomization to the date of first PFS failure or last follow-up for patients without a reported PFS event, assessed up to 5 yearsDefined as local progression, distant failure, or death due to any cause. PFS will be estimated by the Kaplan-Meier method (Kaplan 1958) and estimates between treatment arms will be compared using the log-rank test (Mantel 1966). The Cox proportional hazard regression model will be used to analyze the effects of factors, in addition to treatment, which may be associated with PFS (Cox 1972).
Biochemical decline in alpha-fetoprotein (BD-AFP)Up to 5 yearsFailure is defined as a ≥ 20% decrease in AFP from baseline. The BD-AFP proportion for each treatment arm will be determined and compared between treatment arms using a chi-squared test.
Liver decompensation rate per Child Pugh score (LDR-CP)Up to 5 yearsFailure for this endpoint is the first occurrence of a worsening of Child Pugh score by 2 or more. The LDR-CP proportion for each treatment arm will be determined and compared between treatment arms using a chi-squared test.
Liver decompensation rate per modified albumin-bilirubin (ALBI) score (LDR-mALBI)Up to 5 yearsFailure for this endpoint is the first occurrence of a decrease in grade. The LDR-mALBI proportion for each treatment arm will be determined and compared between treatment arms using a chi-squared test.
Selected long-term treatment-related toxicityUp to 18 months after randomizationDefined as grade ≥ 4 hepatobiliary or gastrointestinal AEs and any grade 5 AE definitely related to protocol treatment. The percentage of patients with the above-specified treatment related AEs will be compared between the treatment arms using a Z-test.

Countries

Canada, United States

Contacts

PRINCIPAL_INVESTIGATORJennifer Y Wo

NRG Oncology

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 18, 2026