A Phase I/II Study to Evaluate AZD5851 in GPC3+ Advanced/Recurrent Hepatocellular Carcinoma

Phase 1

Recruiting

• Conditions: Hepatocellular Carcinoma
• Interventions: Biological: AZD5851

• Registration Number: NCT06084884
• Lead Sponsor: AstraZeneca

Brief Summary

A Phase I/II study to evaluate AZD5851 in patients with GPC3+ advanced/recurrent hepatocellular carcinoma.

Detailed Description

This first-time in human, single-arm, open-label multicentre Phase I/II study will evaluate the safety, tolerability, antitumour activity, cellular kinetics, pharmacodynamics, and immunogenicity of AZD5851 in adult participants with GPC3+ advanced/recurrent HCC, where at least one line of prior therapy has failed/or was intolerable, or participant/investigator decision.

Study Timeline

• Study First Submitted: 2023-10-03
• Study First Submitted QC: 2023-10-12
• Study First Posted: 2023-10-16
• Study Start: 2023-12-14
• Status Verified: 2025-04
• Last Update Submitted: 2025-04-25
• Last Update Posted: 2025-04-27
• Primary Completion: 2027-12-13
• Study Completion: 2027-12-13

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 94

Inclusion Criteria

1. Participant must be 18 years or older and has voluntarily agreed to participate by giving written informed consent.
2. Participants with confirmed advanced/recurrent or metastatic and/or unresectable HCC based on histopathological findings
3. Completed or were unable to tolerate at least one prior line of standard systemic therapy for HCC and/or participant/investigator decision.
4. GPC3-positive tumour as determined by a central laboratory using an analytically validated IHC assay
5. Barcelona Clinic Liver Cancer Stage B (if not amenable to local treatment/surgery) or C prior to apheresis
6. Child-Pugh score: Grade A
7. Participants with HBV and HCV undergoing management of these infections per institutional practice.

Exclusion Criteria

1. Active or prior documented gastrointestinal (GI) variceal bleed or history of upper GI bleeding, ulcers, or esophageal varices with bleeding within 12 months
2. History of liver transplantation or on waiting list
3. Current clinically significant ascites
4. Main portal vein thrombus, or tumor thrombus invasion of mesenteric vein / inferior vena cava
5. Uncontrolled intercurrent illness
6. Active Infections
7. Positive serology for HIV
8. History of hepatic encephalopathy within 12 months prior to treatment allocation
9. History of chronic or recurrent (within the last year) severe autoimmune or immune mediated disease requiring steroids or other immune-suppressive treatments.
10. Prior treatment with any CAR-T therapy directed at any target or any therapy that is targeted to GPC3.
11. Receipt of the last dose of anticancer therapy (chemotherapy, immunotherapy, endocrine therapy, targeted therapy, biologic therapy, tumour embolisation, or monoclonal antibodies, investigational product) within 5 half-lives or ≤ 21 days (whichever is shortest).

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
AZD5851	AZD5851	Subjects will receive AZD5851 following 3 consecutive doses of lymphodepleting chemotherapy (fludarabine and cyclophosphamide).

Primary Outcome Measures

Name	Time	Method
1. Incidence of participants with dose-limiting toxicities (DLTs), adverse events (AEs), including adverse events of special interest (AESI) and serious adverse events (SAEs). Determination of the recommended dose of AZD5851 for expansion phase	Through study completion, an average of 2 years	Determine if treatment with AZD5851 is safe and tolerable through assessment of DLTs, AEs, SAEs and changes from baseline in vital signs, ECGs, and laboratory parameters

Secondary Outcome Measures

Name	Time	Method
2. Interval between the date of AZD5851 infusion dose and first documented evidence of CR or PR	Through study completion, an average of 2 years	Evaluation of the efficacy of the treatment by assessment of time to first response (TTR)
3. Proportion of participants who have a confirmed CR, PR, or who have stable disease (SD) for at least 5 weeks after the date of AZD5851 infusion	Through study completion, an average of 2 years	Evaluation of the efficacy of the treatment by assessment of disease control rate according to RECIST v1.1 (DCR)
5. The best response the participant achieved according to RECIST v1.1	Through study completion, an average of 2 years	Evaluation of the efficacy of the treatment by assessment of best overall response according to RECIST v1.1 (BoR)
10. Pharmacokinetics -time to peak serum concentration of AZD5851	Through study completion, an average of 2 years	Time to peak (maximum) blood concentration (Tmax)
6. Interval between the date of first documented objective response date of first documented disease progression or the last evaluable assessment in the absence of progression	Through study completion, an average of 2 years	Evaluation of the efficacy of the treatment by assessment of duration of response according to RECIST v1.1 (DoR)
9. Pharmacokinetics - maximum serum concentration of AZD5851	Through study completion, an average of 2 years	Maximum blood concentration (Cmax)
12. Pharmacokinetics - Exposure of AZD5851	Through study completion, an average of 2 years	Area under the curve (AUC)
4. The proportion of participants who have a confirmed response (CR/PR) with a duration of at least a specific number of months	Through study completion, an average of 2 years	Evaluation of the efficacy of the treatment by assessment of durable response rate according to RECIST v1.1 (DRR)
7. Interval between the date of first T cell infusion and the earliest date of disease progression or death due to any cause	Through study completion, an average of 2 years	Evaluation of the efficacy of the treatment by assessment of progression-free survival (PFS)
8. Interval between the date of first T cell infusion and date of death due to any cause	Through study completion, an average of 2 years	Evaluation of the efficacy of the treatment by assessment of overall survival (OS)
1. Proportion of participants with a confirmed Complete Response (CR) or Partial Response (PR)	Through study completion, an average of 2 years	Evaluation of the efficacy of the treatment by assessment of the Overall Response Rate according to RECIST v1.1 (ORR)
11. Pharmacokinetics -time to last measurable serum concentration of AZD5851	Through study completion, an average of 2 years	Time to last detectable blood concentration (Tlast)

Trial Locations

Locations (1)

Research Site; 🇰🇷 Seoul, Korea, Republic of