PBI-MST-01 (NCT04541108) Substudy AZN-05: Intratumoral Microdosing of Rilvegostomig, Volrustomig, Sabestomig, and AZD9592 in HNSCC

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

EARLY_PHASE1

Total Enrollment

15 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-05-22

Study Completion Date

2025-04-30

Brief Summary

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This is a multi-center, open-label, Phase 0 substudy designed to evaluate the localized pharmacodynamics (PD) of rilvegostomig, volrustomig, sabestomig, and AZD9592 within the tumor microenvironment (TME) when administered intratumorally in microdose quantities via the CIVO device in patients presenting with Head and Neck Squamous Cell Carcinoma (HNSCC) with a surface accessible lesion, who are scheduled for tumor and/or regional node dissection as part of their standard treatment. PD effects due to injected investigational agents, either as single agents or as AZD9592 drug combinations with the evaluated biologics, will be compared to those elicited by pembrolizumab alone, which will also be injected in microdose quantities via the CIVO device.

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Detailed Description

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The CIVO Microdose Injection Device (MID) simultaneously delivers multiple drugs and drug combinations (Up to 8), each in microdose amounts, into a single patient tumor and enables comparisons of the resulting biomarker responses that occurred while that tumor was still in the native microenvironment. AstraZeneca is developing three novel assets: rilvegostomig, volrustomig, and sabestomig, all of which are bispecific monoclonal antibodies designed to stimulate antitumor immunity. In this Phase 0 clinical trial, the PD effects of these investigational assets in the TME of patients presenting with HNSCC will be evaluated. These investigational assets will be injected alone in microdose quantities at tumor sites in HNSCC patients. Pembrolizumab, also used therapeutically in this patient population, will be included in the CIVO injection array administered as a single agent. In addition, microdoses of AZD9592, a novel antibody drug conjugate (ADC), alone or in combinations with the evaluated biologics will also be assessed. The CIVO-injected portion of the tissue will be analyzed for localized response at sites of drug exposure in the TME.

Conditions

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Head and Neck Squamous Cell Carcinoma

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

This is an exploratory clinical trial to evaluate intratumoral mechanistic effects of novel and approved agents on intact human tumors. This is a cohort substudy of a Master Protocol (PBI-MST-01, NCT04541108) framework, under which comparisons will not be made between substudy cohorts.

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Rilvegostomig, Volrustomig, Sabestomig, AZD9592, Pembrolizumab

HNSCC patients presenting with a surface accessible lesion who are scheduled for tumor and/or regional node dissection as part of their standard treatment will be injected one to three days prior to surgery using the CIVO device. The planned injection scheme includes: vehicle control and microdoses of rilvegostomig, volrustomig, sabestomig, AZD9592, and pembrolizumab as single agents and AZD9592 drug combinations with the evaluated biologics.

Group Type EXPERIMENTAL