On April 9, 2025 Infinitopes Ltd reported that the UK Medicines and Healthcare products Regulatory Agency (MHRA) has granted Clinical Trial Application (CTA) approval for the first-in-human Phase I/IIa clinical trial of ITOP1, the company’s lead ‘off-the-shelf’ cancer vaccine (Press release, Infinitopes, APR 9, 2025, View Source [SID1234651861]). ITOP1 is a precision cancer vaccine, designed to safely and accurately target tumour antigens, leveraging the company’s vector delivery system, aiming to drive strong and durable T-cell protection for patients with surgically resectable oesophageal adenocarcinoma (OAC).
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The vaccine is designed to stimulate a robust immune response, including activation of CD8+ cytotoxic T cells, to eliminate residual cancer cells expressing the target antigens, reducing the risk of disease recurrence. Tumour antigen targets for ITOP1, Infinitopes’ lead asset from its Precision Immunomics platform, are derived using the company’s bespoke AI/ML-driven immunopeptidomics approach and demonstrate high tumour-specificity and inter-patient conservation with potential clinical applicability across multiple cancer types.
The VISTA* study is a phase I/IIa double-blind, randomised, placebo-controlled trial to assess the safety, tolerability and anti-tumour activity of ITOP1 in reducing OAC recurrence rates. 60 patients will receive ITOP1 in a prime/boost regimen, in combination with the best standard of care, i.e., a priming dose following neoadjuvant and a boost dose before adjuvant FLOT (fluorouracil, leucovorin, oxaliplatin, and docetaxel) chemotherapy. Infinitopes’ VISTA trial will be one of the first in the world to administer a cancer vaccine in the neoadjuvant setting while the primary tumour remains in situ, unlocking the potential for enhanced protection from epitope spreading.
The multicentre VISTA study will be conducted at specialist cancer centres in the UK under the leadership of Prof Mark Middleton, a world-renowned Chief Investigator. The VISTA* study is set to commence in Q2 2025. For further details, visit the UK Clinical Trials Registry for Integrated Research Application System (IRAS) project 1008088.
Prof Mark Middleton, Chief Investigator, Head of Oncology & Co-director, CRUK Oxford Centre, University of Oxford, and Scientific Advisory Board Member for Infinitopes, said: "Half of us will suffer cancer in our lifetimes, so we need better, affordable treatments for the disease. ITOP1 is an exciting new immunotherapy with the potential to make a difference across a wide range of cancers, bringing hope to many patients. This first trial in oesophageal cancer will evaluate ITOP1’s precision targeting, which enables anti-tumour immunity through epitope spreading to tackle residual cancer cells and prevent recurrence. We are particularly excited that, by working with the MHRA, we can test ITOP1 where we believe it will achieve the best protection, in potentially curable disease."
Dr Jonathan Kwok, Chief Executive Officer & Co-Founder at Infinitopes, commented: "We are delighted that we have advanced our lead vaccine candidate, ITOP1, from university research to a groundbreaking clinical programme in just over three years. This marks a major performance milestone for the company, bringing Infinitopes an important step closer to offering lifesaving solutions for patients with oesophageal and other aggressive cancers. This achievement is a testament to the power of our team, across immunopeptidomics, computational biology/AI/ML, immunology, oncology, advanced trial design, and our collaborations with Cancer Research UK and leading centres around the world."
Infinitopes recently strengthened its scientific and clinical team with the appointments of exceptional industry leaders, Dan Menichella and Jo Brewer, PhD, supporting the company’s ambition to advance ITOP1 through clinical development to prolong survival and improve the quality of life for patients.
Dan Menichella, Non-Executive Director at Infinitopes, noted: "Infinitopes’ Precision Immunomics approach has the potential to revolutionise cancer treatment as we know it today. I am very excited for the start of our VISTA study, to validate our ITOP1 vaccine and the fundamental enabling technologies."
*VISTA (Vaccination with ITOP1 in resectable oesophageal adenocarcinoma, to evaluate Safety, Tolerability & Anti-tumour activity)