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Cold virus turned cancer killer enters human trials

NCT ID NCT06977737

Disease control Sponsor: Accession Therapeutics Limited Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This early-phase trial tests ATTR-01, a modified cold virus designed to infect and multiply only in cancer cells, delivering an immune-boosting drug directly into the tumor. The study involves 72 adults with solid tumors who have not responded to standard treatments. The goal is to see if the virus is safe and can shrink tumors.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
ATTR-01 (a modified common cold virus that infects and kills cancer cells while delivering immune therapy)
What this could lead to
If successful, this could point toward a new treatment option for certain solid tumors that have not responded to standard therapies.
What could go wrong
This is the first human study, so safety and effectiveness are unknown. The trial is small (72 people) and early-stage, so results may not lead to a widely available treatment.

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

Phase 1/2

Runs two stages together: safety and dose first, then whether the treatment works.

Participants

About 72 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2025

Expected to finish

Dec 2034

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Consenting male and female adults (18 years of age) with select solid epithelial tumour indications known to have high frequency (75 percent) of αvβ6 integrin receptor expression as detailed in the applicable SP. * Received and failed/intolerant of Standard of Care (SoC) therapy where eligible (not including neoadjuvant). * Tumour lesion (not previously irradiated), suitable for safe pre- and post-treatment biopsies. * Measurable disease by Response Evaluation Criteria in Solid Tumours (RECIST) Version 1.1. * Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) of 0 or 1. * Minimum life expectancy anticipated to be greater than three months * Willing to undertake appropriate measures of hygiene to prevent any spread of virus and protection of vulnerable individuals. * Adequate organ function. * Compliant with requirements for prior treatment washout and contraceptive measures applicable to genetically modified organisms (GMOs) and cancer therapies * Prior immune checkpoint antibody therapies as single agents or in combination with other anti-cancer agents is permissible. Exclusion Criteria: * Significant degree of fibrotic disease, including autoimmune diseases (e.g. systemic lupus, rheumatoid arthritis) or idiopathic and occupation-related pulmonary fibrosis. * Known prior history of intolerance to anti-programmed cell death protein 1 (PD-1) and/or anti-PD-L1 immunotherapy due to toxicity. * Has any of the comorbid conditions listed in the detailed protocol exclusion criteria.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Solid tumor, adult

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

    8 sites in 2 countries. The list below names each one and where it is.

  3. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  4. 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

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • , St James' University Hospital

    RECRUITING

    Leeds, United Kingdom

  • Beatson West of Scotland Cancer Centre

    RECRUITING

    Glasgow, Scotland, United Kingdom

  • Churchill Hospital

    RECRUITING

    Oxford, United Kingdom

  • General Hospital San Pedro - START

    NOT_YET_RECRUITING

    Rioja, Spain

  • START Barcelona

    RECRUITING

    Barcelona, Spain

  • Start Fjd

    RECRUITING

    Madrid, Spain

  • Start Hm Ciocc

    RECRUITING

    Madrid, Spain

  • Velindre Cancer Centre

    RECRUITING

    Cardiff, Wales, United Kingdom

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