Experimental virus therapy takes on deadly brain cancer
NCT ID NCT06102525
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This early-phase trial is testing a new treatment for glioblastoma, an aggressive brain cancer. The therapy uses a modified virus (RZ-001) that is injected into the tumor, followed by an antiviral drug (valganciclovir) designed to activate the virus and kill cancer cells. The study will enroll 43 adults to check safety and see if the treatment has any effect on the tumor.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- RZ-001 (a modified virus) plus valganciclovir (an antiviral drug)
- What this could lead to
- If it works, this could point toward a new treatment option for glioblastoma, a tough brain cancer.
- What could go wrong
- This is a very early (Phase 1/2a) and small trial (43 people). The treatment may not shrink tumors or improve survival, and could cause serious side effects.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1/2
Runs two stages together: safety and dose first, then whether the treatment works.
- Participants
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About 43 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Oct 2024
- Expected to finish
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May 2029
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Adult males and females * Histologically-confirmed grade 4 astrocytoma, GBM, per The 2021 WHO Classification of CNS Tumors. * hTERT positive expression confirmed during the screening period * ECOG score of ≤ 2 * KPS ≥ 60 * Life expectancy ≥ 3 months Exclusion Criteria: * Diagnosis of other malignant tumors within 5 years prior to RZ-001 administration. * Have extracranial metastases of the tumor cells * Current or history of HIV positive * Not suitable for inclusion judged by the investigator
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
6 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Asan Medical Center
RECRUITINGSeoul, 05505, South Korea
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Gachon University Gil Medical Center
RECRUITINGIncheon, 21565, South Korea
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Samsung Medical Center
RECRUITINGSeoul, 06351, South Korea
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Seoul National University Bundang Hospital
RECRUITINGSeongnam-si, 13620, South Korea
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Severance Hospital, Yonsei University Health System
RECRUITINGSeoul, 03722, South Korea
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The Catholic University of Korea, Incheon St. Mary's Hospital
RECRUITINGIncheon, 21431, South Korea
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a trio of repurposed drugs shrink recurrent brain tumors?
- Can an existing drug boost bevacizumab against recurrent brain cancer?
- One extra radiation dose after standard brain cancer therapy: can it boost the immune system?
- Radioactive tracer lights up Oxygen-Starved brain tumors
- Can a common virus vaccine help fight brain cancer?
- Radioactive tiles target brain tumors in frail patients