A First-in-human Study to Evaluate the Safety and Tolerability of AZD8853 in Participants With Selected Advanced/Metastatic Solid Tumours

AstraZeneca

Status and phase: Terminated; Phase 2; Phase 1

Conditions: Urinary Bladder Neoplasms; Carcinoma, Non-Small-Cell Lung; Colorectal Cancer

Treatments: Drug: AZD8853; Drug: Zirconium-89 crefmirlimab berdoxam

Study type: Interventional

Funder types: Industry

Identifiers

NCT05397171

2021-005438-41 (EudraCT Number)

D9450C00001

Details and patient eligibility

About

A Phase I/IIa First-in-human, Open-label Study to Evaluate the Safety, Pharmacokinetics, Pharmacodynamics, and Preliminary Efficacy of AZD8853 in Participants with Selected Advanced/Metastatic Solid Tumours.

Full description

This study is evaluating the safety, pharmacokinetics, pharmacodynamics, and preliminary efficacy of AZD8853 in participants with advanced, unresectable or metastatic Non-Small Cell Lung Cancer (NSCLC), Microsatellite Stable Colorectal Cancer (MSS-CRC), Urothelial Carcinoma (UC).

This is a modular study, that includes a master protocol and Substudies.

Substudy 1 will be conducted in 3 parts - Part A: Dose escalation, Part B: Safety expansion and exploratory CD8+ T cell radiopharmaceutical tracer with PET imaging, and Part C: Efficacy expansion.

Enrollment: 17 patients

Sex: All

Ages: 18 to 130 years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

*Key Inclusion Criteria*

All Substudies:

1. At least one measurable target lesions per RECIST 1.1.
2. Eastern Cooperative Group (ECOG) of 0-1.
3. Life expectancy of ≥ 12 weeks
4. Adequate organ and marrow function as defined in the protocol

Substudy 1:

1. Histologically or cytologically confirmed locally advanced, unresectable or metastatic NSCLC, MSS-CRC, or UC.
2. Documented progression from previous therapy
3. NSCLC:

3.a. At least 1 line of systemic therapy in the advanced / metastatic setting 3.b.Must have received anti-PD-1/anti-PD-L1 agent with or without chemotherapy 3.c. Part B and C: Documented no sensitizing EGFR mutations or ALK fusions/rearrangements

4. MSS-CRC: 4.a. At least 2 prior lines of systemic therapy in the advanced / metastatic setting, including specific therapies defined in the protocol

5. UC: 5.a. At least 1 prior line of systemic therapy in the advanced / metastatic setting, including either a platinum-containing regimen and/or an anti-PD-1 or anti-PD-L1 drug 6. Provision of archival tissue or unstained slides 7. Part B: Willing to provide mandatory biposies at screening and on study 8. Part B-CD8+ PET: At least 1 non-liver lesion suitable for PET imaging

*Key Exclusion Criteria*

All Substudies:

1. Unresolved toxicities ≥ Grade 2 per CTCAE 5.0 from prior therapy, with some exceptions defined in the protocol
2. Symptomatic CNS metastases or leptomeningeal disease
3. Active or ongoing infections, or uncontrolled intercurrent illness as defined in the protocol
4. Active or prior documented autoimmune or inflammatory disorder
5. Body weight loss of > 10% within 30 days of screening visit
6. Type 2 diabetes requiring management by metformin, where metformin cannot be switched to another treatment at least 7 days prior to starting study treatment

Substudy 1:

1. Must not have had a toxicity from a checkpoint inhibitor that lead to permanent discontinuation of immunotherapy
2. Participants with brain metastases, unless treated, asymptomatic, stable, and not requiring treatment

Trial design

Primary purpose: Treatment

Allocation: Non-Randomized

Interventional model: Sequential Assignment

Masking: None (Open label)

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17 participants in 2 patient groups

Substudy 1 - Parts A, B, and C

Experimental group

Description:

* Part A: AZD8853 monotherapy dose escalation * Part B1 and Part B2: AZD8853 monotherapy safety expansion at dose levels and indications determined to be safe in Part A * Part C1 and Part C2: AZD8853 monotherapy safety and preliminary efficacy expansion at dose levels and indications determined to be safe in Parts A and B

Treatment:

Drug: AZD8853

Substudy 1 - Parts B1 and B2 with CD8+ PET

Experimental group

Description:

Sub-set of participants from Parts B1 and B2 will also receive investigational CD8+ T cell targeted radioactive tracer, Zirconium-89 crefmirlimab berdoxam with PET scans

Treatment:

Drug: Zirconium-89 crefmirlimab berdoxam