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Looking for participantsPhase1/Phase2

A Study of ATTR-01 in Participants With Select Epithelial Solid Tumours

Sponsor: Accession Therapeutics Limited

NCT ID: NCT06977737

View on ClinicalTrials.gov ↗

At a glance

What the study gets you
Access to the study treatment being tested
Type of study
Interventional (receives a drug or procedure)
Time in hospital
In-person visits at study sites — visit count not specified by the sponsor
Drug or intervention
ATTR-01 (drug)
How long the study runs
Study runs about 117 months (dates as stated)
About the drug or intervention
ATTR-01 — drug: Intravenous injection
Patient visit burden
Not specified by the sponsor

In plain English

This study is testing a treatment called ATTR-01 in adults with certain solid tumours that often have high levels of a protein called αvβ6 integrin on their surface. It is run by Accession Therapeutics Limited. The trial focuses on people whose cancer is a type that starts in lining tissues (epithelial).

Who can take part

  • Adults aged 18 and over who consent to take part, with certain solid epithelial tumours known to often have high levels of a protein called αvβ6 integrin
  • People who have already had standard treatment that did not work or caused bad side effects (not including treatment given before surgery)
  • Have a tumour that was not treated with radiotherapy before, and that can safely have small samples (biopsies) taken before and after treatment
  • Have cancer that can be measured using standard guidelines called RECIST Version 1.1
  • Are well enough to care for themselves, based on a fitness score called ECOG of 0 or 1
  • Are expected to live more than three months
  • Are willing to follow good hygiene measures to avoid spreading a virus and to protect vulnerable people
  • Have organs (such as the liver and kidneys) working well enough
  • Are able to follow rules about waiting times after previous treatments and using contraception, as required for genetically modified organisms and cancer treatments
  • Previous immunotherapy (immune checkpoint antibody treatment), alone or with other cancer drugs, is allowed

Who may not be able to

  • People with a significant amount of fibrotic disease (scarring or thickening of tissue), including autoimmune diseases such as systemic lupus or rheumatoid arthritis, or lung fibrosis with no known cause or linked to their job
  • People who have had bad side effects (toxicity) from immunotherapy drugs called PD-1 or PD-L1 treatments in the past
  • People with other health conditions listed in the full trial rules

What taking part involves

  • • Not stated — ask the trial team

Time commitment: Not stated — ask the trial team about the number of visits, how long the trial lasts, and what taking part involves.

Plain-English summary (AI-generated) from registry data. Not eligibility advice — only the trial team can confirm whether you can take part. Use the eligibility checker to see how your health profile matches this trial.

Type of study
Testing a treatment
Ages
18 Years and over
Who
All
Number of participants
72
Started
2025-03-21
Last checked
2026-05

Plain English Summary

What is this study?

  • • Testing a new treatment for solid tumor, adult
  • • Phase1/Phase2 - 72 participants
  • • ATTR-01 is the experimental drug being studied in the ATTEST clinical trial

Who can take part?

  • • Ages 18 Years and over
  • • Diagnosed with solid tumor, adult

Where?

  • • Glasgow - Beatson West of Scotland Cancer Centre
  • • Cardiff - Velindre Cancer Centre
  • • Leeds - , St James' University Hospital
  • • Oxford - Churchill Hospital

This is a simplified summary. Always discuss with your doctor before making any decisions.

About This Trial

ATTR-01 is the experimental drug being studied in the ATTEST clinical trial. The drug is made from a common cold virus that has been changed to only infect and multiply in cancer cells. This virus delivers an immune therapy drug into the cancer that is intended to promote a participant's own immune system to attack the cancer. The first part of this trial (sub-protocol A) is a phase 1 trial including dose escalation and expansion at one or more doses. It is the first time that ATTR-01 will be given to humans. If an optimal dose is identified, additional sub-protocols will be added by to further elicit whether ATTR-01 may successfully treat cancer. Expanded access is not available.

Solid Tumor, Adult

How this trial compares with your answers

Answer 2 more questions to improve match

What we know so far

Condition· Matched your search
Age· Tell us your age for better matching
Gender· Tell us your sex for better matching

Still need:

  • • Tell us your age for better matching
  • • Tell us your sex for better matching

Preliminary match based on your answers. Full eligibility requires on-site assessment including medical history, physical exam, and lab tests. This does not guarantee enrolment.

Eligibility at a Glance

Key info

  • Age: 18 Years and over
  • Who can join: All genders

Biomarkers mentioned

PD-L1

Treatment history

Treatments you must have had:

  • ✓ washout

What the study is looking for

  • ✓Received and failed/intolerant of the usual treatment (SoC) therapy where eligible (not including before surgery).
  • ✓Tumour lesion (not previously irradiated), suitable for safe pre- and post-treatment biopsies.
  • ✓cancer that can be measured on scans by Response Evaluation Criteria in Solid Tumours (RECIST) Version 1.1.
  • ✓activity scale (ECOG) Performance Status (PS) of 0 or 1.
  • ✓Minimum life expectancy anticipated to be greater than three months

Who cannot take part

  • ✗Significant degree of fibrotic disease, including autoimmune diseases (e.g. systemic lupus, rheumatoid arthritis) or...
  • ✗Known prior history of intolerance to anti-programmed cell death protein 1 (PD-1) and/or anti-PD-L1 treatment that helps your immune system fight cancer...
  • ✗Has any of the comorbid conditions listed in the detailed protocol exclusion criteria.
See the full criteria
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.

Where Is This Study? (4 UK sites)

Beatson West of Scotland Cancer Centre

Glasgow, United Kingdom

Recruiting
Hospital R&D contact (matched)

Jennifer McLean

jennifer.mclean@health.scot.nhs.uk0131 537 4718

Velindre Cancer Centre

Cardiff, United Kingdom

Recruiting
Hospital R&D contact (matched)

Sarah Townsend

Velindre.R&Doffice@wales.nhs.uk02920 196165

, St James' University Hospital

Leeds, United Kingdom

Recruiting

Churchill Hospital

Oxford, United Kingdom

Recruiting

How to Get in Touch

Hardev Pandha, Professor

Sponsor contact

CONTACT

+44 1865-950220 clinicaloperations@accessiontherapeutics.com
Data sourced from ClinicalTrials.gov · Last verified: 2026-05