Actively Recruiting

Phase 1
Phase 2
Age: 18Years +
All Genders
Healthy Volunteers
NCT05356741

To Access the Safety and Effects of Intravenous Administration of VIR-5818 Alone and in Combination With Pembrolizumab in Adult Participants With Locally Advanced or Metastatic HER2-Expressing Cancers

Led by Vir Biotechnology, Inc. · Updated on 2025-09-24

645

Participants Needed

10

Research Sites

278 weeks

Total Duration

On this page

Sponsors

V

Vir Biotechnology, Inc.

Lead Sponsor

M

Merck Sharp & Dohme LLC

Collaborating Sponsor

AI-Summary

What this Trial Is About

This first-in-human (FIH) Phase 1 open-label multicenter dose-escalation and dose-expansion study is designed to evaluate the safety, pharmacokinetics, and preliminary activity of VIR-5818 (Formerly AMX-818) as a single agent and in combination with pembrolizumab in participants with HER2+ tumors across multiple tumor types. The study will be conducted in four parts: * Part 1 (dose escalation): Single-agent VIR-5818 * Part 2 (dose escalation): VIR-5818 plus pembrolizumab * Part 3 (dose expansion): Single-agent VIR-5818 * Part 4 (dose expansion): VIR-5818 plus pembrolizumab The total length of the study, from screening of the first participant to the end of the study, is expected to be approximately 52 months.

CONDITIONS

Official Title

To Access the Safety and Effects of Intravenous Administration of VIR-5818 Alone and in Combination With Pembrolizumab in Adult Participants With Locally Advanced or Metastatic HER2-Expressing Cancers

Who Can Participate

Age: 18Years +
All Genders
Healthy Volunteers

Eligibility Criteria

Eligible

You may qualify if you...

  • Written informed consent by the participant or legally acceptable representative
  • Life expectancy of at least 12 weeks
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
  • Diagnosed with locally advanced or metastatic HER2-expressing cancer based on local tests
Not Eligible

You will not qualify if you...

  • Significant cardiopulmonary disease or recent serious cardiac events
  • History of major organ autoimmune diseases
  • Presence of acute or chronic infections

AI-Screening

AI-Powered Screening

Complete this quick 3-step screening to check your eligibility

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Trial Site Locations

Total: 10 locations

1

Investigational site number #100

Melbourne, Victoria, Australia, 3000

Actively Recruiting

2

Investigational site number #101

Randwick, Australia, 2031

Actively Recruiting

3

Investigational site number #150

Toulouse, France, 31059

Actively Recruiting

4

Investigational site number #200

Porto, Portugal, 4200-072

Actively Recruiting

5

Investigational site number #255

Barcelona, Spain, 08023

Actively Recruiting

6

Investigational site number #251

Barcelona, Spain, 08035

Actively Recruiting

7

Investigational site number #254

Madrid, Spain, 28027

Actively Recruiting

8

Investigational site number #252

Madrid, Spain, 28050

Actively Recruiting

9

Investigational site number #250

Pamplona, Spain, 31008

Actively Recruiting

10

Investigational site number #253

Pozuelo de Alarcón, Spain, 28223

Actively Recruiting

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Research Team

S

Study Inquiry

CONTACT

How is the study designed?

Study Type

INTERVENTIONAL

Masking

NONE

Allocation

NON_RANDOMIZED

Model

SEQUENTIAL

Primary Purpose

TREATMENT

Number of Arms

4

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