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Hepatocellular CarcinomaPhase 1/2RHEA-1NCT06795022

First in Human Study to Evaluate AZD9793 in Participants With Advanced or Metastatic Solid Tumours

A Phase 1/2 study testing AZD9793 Intravenous (IV) monotherapy and AZD9793 Subcutaneous (SC) monotherapy in people with Hepatocellular Carcinoma, run by AstraZeneca at 21 sites in 7 countries.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

This research is designed to determine if experimental treatment with AZD9793, a T cell-engaging antibody that targets GPC3, is safe, tolerable and has anti-cancer activity in patients with advanced or metastatic solid tumours which are GPC3+. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Hepatocellular Carcinoma
What is being tested?
AZD9793 Intravenous (IV) monotherapy and AZD9793 Subcutaneous (SC) monotherapy
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
304 participants
Where
21 sitesin 7 countries
Study dates
27 Mar 2025to 30 Jun 2028
Phase
Phase 1/2
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age ≥ 18 at the time of signing the informed consent.
  • GPC3 positive tumour as determined by a central laboratory using an analytically validated IHC assay. Patients who previously received any therapy targeting GPC3 must undergo central laboratory GPC3 testing on tumour tissue collected after completion of the prior GPC3-targeted therapy.
  • Must have at least one measurable lesion according to Response Evaluation Criteria in Solid Tumors (RECIST) v1.1
  • Eastern Cooperative Oncology Group Performance status (ECOG PS): 0-1 at screening.
  • Predicted life expectancy of ≥ 12 weeks.
  • Adequate organ and bone marrow function measured within 28 days prior to first dose as defined by the protocol.
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  • Contraceptive use by men or women should be consistent with local regulations, as defined by the protocol.
  • Confirmed advanced recurrent and/or metastatic and/or unresectable HCC, which is histopathologically proven based on the criteria established by the World Health Organization.
  • Barcelona Clinic Liver Cancer (BCLC) stage B (that is not eligible for locoregional therapy) or stage C.
  • Child-Pugh Score class A.
  • Previous therapy:
  • Part A: Patients who have received at least one prior line of standard systemic therapy for HCC as per National Comprehensive Cancer Network or other local scientific guidelines and for which a clinical study is the best option for next treatment based on prior response and/or tolerability and/or patient/investigator decision.
  • Part B: Patients must not have received more than one prior line of systemic therapy in the advanced recurrent and/or metastatic setting.

Who cannot join

  • Unresolved toxicity from prior anticancer therapy, including imAEs, of Common Terminology Criteria for Adverse Events (CTCAE) Grade ≥ 2 except for vitiligo, peripheral neuropathy related to prior anti-cancer therapy, alopecia, endocrine disorders that are controlled with replacement hormone therapy and asymptomatic laboratory abnormalities.
  • Prior to enrolment, participation in another clinical study with an investigational product administered in the last 21 days or 5 half-lives whichever is shorter.
  • CAR-T cell therapy within the last 6 months prior to enrolment on this study.
  • Known allergy or hypersensitivity to AZD9793 or any of the excipients of the product as outlined in the IB.
  • Requires chronic immunosuppressive therapy (including steroids > 10 mg prednisone/day or equivalent).
  • Received radiation within 14 days prior to first dose of study treatment; palliative radiation to reduce the risk of tumour lysis syndrome (TLS) or CRS/neurotoxicity in participants with bulky disease is permitted.
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  • Undergone a major surgical procedure within 14 days prior to first dose of study treatment days to allow adequate healing
  • Experienced unacceptable cytokine release syndrome (CRS) or Immune Effector Cell Associated Neurotoxicity (ICANS) following prior T cell engagers (TCE) or chimeric antigen receptor T (CAR-T) cell therapy.
  • Previous history of hemophagocytic lymphohistiocytosis (HLH) / macrophage activation syndrome (MAS).
  • Active or prior documented autoimmune or inflammatory disorders within 3 years of start of treatment.
  • Cardiac conditions as defined by the protocol.
  • History of thromboembolic event within the past 3 months prior to the scheduled first dose of study intervention.
  • Central nervous system (CNS) metastases or CNS pathology, as defined by the protocol, within 3 months prior to consent.
  • Infectious disease including active human immunodeficiency virus (HIV), and uncontrolled active systemic fungal, bacterial or other infection.
  • Known fibrolamellar HCC, sarcomatoid HCC, or combined hepatocellular malignant cholangiocarcinoma.

Trial locations and contacts

21 sites in 7 countries. Contact the study team or a site near you to ask about taking part.

AstraZeneca Clinical Study Information Center contact

1-877-240-9479

information.center@astrazeneca.com

21 sites in 7 countries

United States7 sites, 6 recruiting
  • Research Site

    Baltimore, Maryland, 21201

    Not yet recruiting
  • Research Site

    Boston, Massachusetts, 02114

    Not yet recruiting
  • Research Site

    Hackensack, New Jersey, 07601

    Recruiting
  • Research Site

    Houston, Texas, 77030

    Recruiting
  • Research Site

    La Jolla, California, 92093

    Withdrawn
  • Research Site

    Los Angeles, California, 90089

    Recruiting
  • Research Site

    St Louis, Missouri, 63108

    Recruiting

Other trials in United States

China4 sites, 4 recruiting
  • Research Site

    Chengdu, 610041

    Recruiting
  • Research Site

    Guangzhou, 510515

    Recruiting
  • Research Site

    Harbin, 150049

    Not yet recruiting
  • Research Site

    Shanghai, 201114

    Recruiting

Other trials in China

Hong Kong2 sites, 2 recruiting
  • Research Site

    Pokfulam, 999077

    Recruiting
  • Research Site

    Shatin, 000000

    Recruiting

Other trials in Hong Kong

Japan2 sites, 2 recruiting
  • Research Site

    Kashiwa, 277-8577

    Recruiting
  • Research Site

    Yokohama, 241-8515

    Recruiting

Other trials in Japan

South Korea2 sites, 2 recruiting
  • Research Site

    Seoul, 06351

    Not yet recruiting
  • Research Site

    Seoul, 5505

    Recruiting

Other trials in South Korea

Spain2 sites, 2 recruiting
  • Research Site

    Barcelona, 8035

    Not yet recruiting
  • Research Site

    Pamplona, 31005

    Not yet recruiting

Other trials in Spain

Taiwan2 sites, 2 recruiting
  • Research Site

    Taipei, 10002

    Recruiting
  • Research Site

    Taoyuan, 333

    Recruiting

Other trials in Taiwan

About this study

Official title: A Modular Phase I/II Open-label Dose Escalation and Dose Expansion Study to Evaluate the Safety, Pharmacokinetics, Pharmacodynamics, and Efficacy of AZD9793, a T Cell-engaging Antibody Targeting Glypican-3 (GPC3) in Adult Participants With Advanced or Metastatic Solid Tumours (RHEA-1)

This research is designed to determine if experimental treatment with AZD9793, a T cell-engaging antibody that targets GPC3, is safe, tolerable and has anti-cancer activity in patients with advanced or metastatic solid tumours which are GPC3+.

Read the detailed description

This is a first-time in human, modular Phase I/II, open-label multicentre study of AZD9793 monotherapy administered intravenously (Module 1), or AZD9793 monotherapy administered subcutaneously (Module 2) in patients with advanced or metastatic solid tumours. Each module contains dose-escalation (Part A) and dose-expansion (Part B).

Being tested
AZD9793 Intravenous (IV) monotherapy, AZD9793 Subcutaneous (SC) monotherapy
Keywords
Glypican-3, GPC3, GPC3+ tumours, T cell-engaging antibody, TCE, AZD9793, Solid tumours, HCC
Medical subject headings
Carcinoma, Hepatocellular, Simpson-Golabi-Behmel syndrome

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AZD9793 Intravenous (IV) monotherapyDrug

    T cell-engaging antibody that targets GPC3 on tumour cells

  • AZD9793 Subcutaneous (SC) monotherapyDrug

    T cell-engaging antibody that targets GPC3 on tumour cells

Study groups in NCT06795022
Study groupRoleWhat they receive
Module 1: AZD9793 Intravenous (IV) monotherapy Part AExperimentalModule 1: AZD9793 Intravenous (IV) monotherapy Part A: Dose Escalation
Receives: Drug: AZD9793 Intravenous (IV) monotherapy
Module 2: AZD9793 Subcutaneous (SC) monotherapy Part AExperimentalModule 2: AZD9793 Subcutaneous (SC) monotherapy Part A: Dose Escalation
Receives: Drug: AZD9793 Subcutaneous (SC) monotherapy
Module 1: AZD9793 Intravenous (IV) monotherapy Part BExperimentalModule 1: AZD9793 Intravenous (IV) monotherapy Part B: Dose Expansion
Receives: Drug: AZD9793 Intravenous (IV) monotherapy
Module 2: AZD9793 Subcutaneous (SC) monotherapy Part BExperimentalModule 2: AZD9793 Subcutaneous (SC) monotherapy Part B: Dose Expansion
Receives: Drug: AZD9793 Subcutaneous (SC) monotherapy

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. The number of patients with adverse events

    Number of patients with adverse events by system organ class and preferred term

    Measured: From first dose of study drug up to 30 days post last dose and prior to start of subsequent anticancer therapy

  2. The number of patients with serious adverse events

    Number of patients with serious adverse events by system organ class and preferred term

    Measured: From first dose of study drug up to 30 days post last dose and prior to start of subsequent anticancer therapy

  3. The number of patients with adverse events of special interest

    Number of patients with adverse events of special interest by system organ class and preferred term

    Measured: From first dose of study drug up to 30 days post last dose and prior to start of subsequent anticancer therapy

  4. The number of AEs leading to discontinuation of AZD9793

    Number of AEs that in the opinion of the Investigator or the Sponsor contraindicate further dosing or AEs that meet criteria for discontinuation

    Measured: From first dose of study drug up to 30 days post last dose and prior to start of subsequent anticancer therapy

  5. The number of patients with dose-limiting toxicity (DLT), as defined in the protocol [Part A Dose Escalation only]

    Number of patients with at least 1 DLT. A DLT is a toxicity as defined in the protocol that occurs from the first dose of study drug up to and including the planned end of the DLT evaluation period that is assessed as unrelated to the disease or disease-related processes under investigation.

    Measured: From date of first dose of study drug until the end of DLT evaluation period (up to 21, 28 or 35 days depending on dose regimen)

  6. Objective Response Rate (ORR) [Part B Dose Expansion only]

    The percentage of patients with a confirmed investigator assessed complete or partial response according to response criteria in solid tumours (RECIST 1.1). Dose expansion only.

    Measured: From first dose of study drug to progressive disease or the last evaluable assessment in the absence of disease progression whichever comes first (up to approximately 2 years)

Secondary outcomes (15)
  1. Objective Response Rate (ORR) [Part A Dose Escalation only]

    The percentage of patients with a confirmed investigator assessed complete or partial response according to response criteria in solid tumours (RECIST 1.1). Dose escalation only.

    Measured: From first dose of study drug to progressive disease or the last evaluable assessment in the absence of disease progression whichever comes first (up to approximately 2 years)

  2. Best overall response (BOR)

    The best overall radiological visit response the participant achieves per RECIST 1.1 as assessed by the investigator.

    Measured: From first dose until disease progression or the last evaluable assessment in the absence of progression (up to approximately 2 years)

  3. Duration of response (DoR)

    The time from the date of first response until date of disease progression or death in the absence of disease progression, according to response criteria in solid tumours (RECIST 1.1).

    Measured: From the first documented objective response (subsequently confirmed) to progressive disease or death in absence of progression (up to approximately 2 years)

  4. Disease Control Rate (DCR) at 12 weeks

    Percentage of patients with confirmed complete or partial response or having stable disease maintained for >= 11 weeks, at 12 weeks from first dose, according to response criteria in solid tumours (RECIST 1.1).

    Measured: From first dose of study drug to progressive disease or last evaluable assessment in the absence of disease progression. [Expected to be measured for each patient at 12 weeks]

  5. Durable response rate (DRR)

    Percentage of participants who have a confirmed best overall response of CR or PR with a duration of at least 3 months, 6 months, 9 months, and 12 months.

    Measured: From first documented objective response (subsequently confirmed) to the date of disease progression or the last evaluable assessment in the absence of progression (up to approximately 2 years)

  6. Time To Response (TTR)

    The time from start of study treatment until the date of first documented objective response, which is subsequently confirmed as assessed by the Investigator per RECIST 1.1.

    Measured: From start of study treatment until the date of first documented objective response, which is subsequently confirmed as assessed by the Investigator per RECIST 1.1 (up to approximately 2 years)

  7. Percentage change in tumour size

    Percentage change from baseline in target lesion tumour size (sum of longest diameters of target lesions) based on the RECIST v1.1 target lesion measurements as assessed by the Investigator.

    Measured: From first dose of study drug to the last evaluable assessment

  8. Progression free Survival (PFS)

    The time from the start of study treatment until RECIST 1.1 defined disease progression or death in the absence of disease progression.

    Measured: From the start of study treatment to progressive disease or death due to any cause (up to approximately 2 years)

  9. Overall Survival (OS) [Dose expansion only]

    The time from the start of study treatment until death due to any cause. Dose expansion only.

    Measured: From the start of study treatment to death (up to approximately 2 years)

  10. Pharmacokinetics of AZD9793: Maximum serum concentration of the study drug (Cmax)

    Maximum observed serum concentration of the study drug

    Measured: From the first dose of study intervention, at predefined intervals throughout the study (up to approximately 2 years)

  11. Pharmacokinetics of AZD9793: Area Under the concentration-time curve (AUC)

    Area under the serum concentration-time curve

    Measured: From the first dose of study intervention, at predefined intervals throughout the study (up to approximately 2 years)

  12. Pharmacokinetics of AZD9793: Clearance

    A pharmacokinetic measurement of the volume of serum from which the study drug is completely removed per unit time.

    Measured: From the first dose of study intervention, at predefined intervals throughout the study (up to approximately 2 years)

  13. Pharmacokinetics of AZD9793: Terminal elimination half-life (t 1/2)

    Terminal elimination half life.

    Measured: From the first dose of study intervention, at predefined intervals throughout the study (up to approximately 2 years)

  14. Immunogenicity of AZD9793

    The number and percentage of participants who develop anti-drug antibodies (ADAs) measured in serum

    Measured: From the first dose of study intervention, at predefined intervals throughout the study (up to approximately 2 years)

  15. Change in CD8+ Levels

    Percentage change in CD8+ cells measured by IHC in samples taken pre and post treatment

    Measured: From time of Informed consent, at predefined intervals (including screening, on-treatment or end of treatment) throughout the study (up to approximately 2 years)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Jan 2025
  2. Study start27 Mar 2025
  3. Primary completion30 Jun 2027 (estimated)
  4. Study completion30 Jun 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1/2
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Sequential
Model description
The study consists of individual modules each evaluating the safety and tolerability of AZD9793 dosed as monotherapy: Module 1: AZD9793 intravenous administration Module 2: AZD9793 subcutaneous administration Modules 1 and 2 each consist of two parts: Part A, Dose Escalation and Part B, Dose Expansion.
Masking
None (open label)
Enrolment
304 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06795022
Sponsor's protocol ID
D7040C00001
Acronym
RHEA-1
Status last verified
Oct 2026
First submitted
8 Jan 2025
Last updated
14 Oct 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal Vivli.org. All requests will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure. Yes, indicates that AZ are accepting requests for IPD, but this does not mean all requests will be shared.

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing AZD9793 Intravenous (IV) monotherapy and AZD9793 Subcutaneous (SC) monotherapy in people with Hepatocellular Carcinoma, run by AstraZeneca at 21 sites in 7 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 13 inclusion and 15 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 14 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 21 sites in United States, China, Hong Kong, Japan, South Korea and 2 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact AstraZeneca Clinical Study Information Center (1-877-240-9479, information.center@astrazeneca.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

The number of patients with adverse events (time frame: From first dose of study drug up to 30 days post last dose and prior to start of subsequent anticancer therapy). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 Oct 2026.

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