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Study identifier: NCT05356741 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

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

Condition: Locally Advanced or Metastatic HER2-Expressing Cancers  ·  Sponsor: Vir Biotechnology, Inc.

PhasePhase 1/Phase 2
Planned participants645
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersYes

About this study

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.

This description comes directly from the study's public registry record.

Talk to the study team

Study Inquiry  ·  415-654-5281  ·  clinicaltrials@vir.bio

Always discuss trial participation with your own doctor first.

Locations (10)

Investigational site number #100Melbourne, Victoria, AustraliaRecruiting
Investigational site number #101Randwick, AustraliaRecruiting
Investigational site number #150Toulouse, FranceRecruiting
Investigational site number #200Porto, PortugalRecruiting
Investigational site number #255Barcelona, SpainRecruiting
Investigational site number #251Barcelona, SpainRecruiting
Investigational site number #254Madrid, SpainRecruiting
Investigational site number #252Madrid, SpainRecruiting
Investigational site number #250Pamplona, SpainRecruiting
Investigational site number #253Pozuelo de Alarcón, SpainRecruiting

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Source record: clinicaltrials.gov/study/NCT05356741