First in Human Study to Evaluate AZD9793 in Participants With Advanced or Metastatic Solid Tumours
RHEA-1
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)
1 other identifier
interventional
304
7 countries
20
Brief 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+.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_1 hepatocellular-carcinoma
Started Mar 2025
20 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
January 8, 2025
CompletedFirst Posted
Study publicly available on registry
January 27, 2025
CompletedStudy Start
First participant enrolled
March 27, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
February 25, 2028
ExpectedStudy Completion
Last participant's last visit for all outcomes
July 25, 2028
December 1, 2025
November 1, 2025
2.9 years
January 8, 2025
November 28, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (5)
The number of patients with adverse events
Number of patients with adverse events by system organ class and preferred term
From first dose of study drug up to 30 days post last dose and prior to start of subsequent anticancer therapy
The number of patients with serious adverse events
Number of patients with serious adverse events by system organ class and preferred term
From first dose of study drug up to 30 days post last dose and prior to start of subsequent anticancer therapy
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
From first dose of study drug up to 30 days post last dose and prior to start of subsequent anticancer therapy
The number of patients with dose-limiting toxicity (DLT), as defined in the protocol.
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 Cycle 1 (the DLT assessment period) that is assessed as unrelated to the disease or disease-related processes under investigation.
From date of first dose of study drug until the end of Cycle 1 (up to 28 days)
Objective Response Rate (ORR) [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.
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 (14)
Objective Response Rate (ORR) [Dose escalation only]
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)
Best overall response (BOR)
From first dose until disease progression or the last evaluable assessment in the absence of progression (up to approximately 2 years)
Disease Control Rate (DCR) at 12 weeks
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]
Durable response rate (DRR)
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)
Duration of response (DoR)
From the first documented objective response (subsequently confirmed) to progressive disease or death in absence of progression (up to approximately 2 years)
- +9 more secondary outcomes
Study Arms (2)
Module 1: AZD9793 Intravenous (IV) monotherapy
EXPERIMENTALModule 1: AZD9793 Intravenous (IV) monotherapy
Module 2: AZD9793 Subcutaneous (SC) monotherapy
EXPERIMENTALModule 2: AZD9793 Subcutaneous (SC) monotherapy
Interventions
T cell-engaging antibody that targets GPC3 on tumour cells
T cell-engaging antibody that targets GPC3 on tumour cells
Eligibility Criteria
You may qualify if:
- 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.
- 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.
- 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.
You may not qualify if:
- 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).
- Prior treatment with any therapy that is targeted to GPC3.
- 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.
- 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.
- +1 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- AstraZenecalead
Study Sites (20)
Research Site
La Jolla, California, 92093, United States
Research Site
Los Angeles, California, 90089, United States
Research Site
Baltimore, Maryland, 21201, United States
Research Site
St Louis, Missouri, 63108, United States
Research Site
Hackensack, New Jersey, 07601, United States
Research Site
Houston, Texas, 77030, United States
Research Site
Chengdu, 610041, China
Research Site
Guangzhou, 510515, China
Research Site
Harbin, 150049, China
Research Site
Shanghai, 201114, China
Research Site
Pokfulam, 999077, Hong Kong
Research Site
Shatin, 000000, Hong Kong
Research Site
Kashiwa, 277-8577, Japan
Research Site
Yokohama, 241-8515, Japan
Research Site
Seoul, 06351, South Korea
Research Site
Seoul, 5505, South Korea
Research Site
Barcelona, 8035, Spain
Research Site
Pamplona, 31008, Spain
Research Site
Taipei, 10002, Taiwan
Research Site
Taoyuan District, 333, Taiwan
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Central Study Contacts
AstraZeneca Clinical Study Information Center
CONTACT
Study Design
- Study Type
- interventional
- Phase
- phase 1
- Allocation
- NON RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SEQUENTIAL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
January 8, 2025
First Posted
January 27, 2025
Study Start
March 27, 2025
Primary Completion (Estimated)
February 25, 2028
Study Completion (Estimated)
July 25, 2028
Last Updated
December 1, 2025
Record last verified: 2025-11
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- STUDY PROTOCOL, SAP
- Time Frame
- AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA PhRMA Data Sharing Principles. For details of our timelines, please rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.
- Access Criteria
- When a request has been approved AstraZeneca will provide access to the anonymized individual patient-level data via secure research environment Vivli.org. Signed Data Usage Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information.
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.