Skip to main content
Go to the home page of the European Commission (opens in new window)
English en
CORDIS - EU research results
CORDIS

A Novel Phase-2a Clinical Trial for a Next-Generation Oncolytic Immunotherapy Targeting Platinum-Resistant Ovarian Cancer

Objective

Annually 87,894 EU citizens are diagnosed with ovarian cancer (OC), with >75% at an advanced stage and poor long-term outcomes (<25% 5-year survival). Standard-of-care first-line treatments combine cytoreductive surgery, platinum-based chemotherapies, and paclitaxel. Although initially effective, most patients relapse (>70% within 3-years) and become resistant to treatment. There are no effective treatments for platinum-resistant OC (PROC) and patients have a life expectancy of <12-months.

Therapeutic challenges result from the heterogeneous and immune-suppressed nature of the tumour microenvironment, and high volume of cancer-associated fibroblasts (CAFs), that create barriers to treatment and promote tumour survival mechanisms.

THEO-260 is a next-generation oncolytic virus demonstrating:
- world-first dual efficacy, targeting both patient CAF- and cancer- cells
- high tumour selectivity (low toxicity)
- strong TME modulation (immune cell infiltration) and adaptive immune responses
- high systemic activity (intravenous delivery via standard-of-care practices and treatment of metastatic tumours)

Currently in Phase-1 trials, THEO-260 is expected to deliver a game-changer in PROC treatment, tripling patient survival, improving quality-of-life, and doubling 5-year survival rates for advanced stage disease.

The project assembles a world class consortium, comprising one of Europe’s leading SME OV Biotechs and 4 centres of excellence in the fields of gynaecological cancer, immunotherapies, and translational research. Our goals are to:
- complete a 20-patient multi-centre, open label Phase-2a trial to assess preliminary efficacy,
- undertake comprehensive translational research to assess THEO-260's pharmacokinetic, pharmacodynamic, and immune behaviour, and
- leverage our partnership and knowhow to consolidate OV clinical development capabilities and best-practice within Europe (increasing OV trial capacity and accelerating development).

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-RIA - HORIZON Research and Innovation Actions

See all projects funded under this funding scheme

Call for proposal

(opens in new window) HORIZON-HLTH-2025-01

See all projects funded under this call

Coordinator

THEOLYTICS LTD
Net EU contribution
€ 5 348 627,00
Address
SHERARD BUILDING, EDMUND HALLEY ROAD, OXFORD SCIENCE PARK
OX4 4DQ OXFORD
United Kingdom
SME
Yes
Region
South East (England) Berkshire, Buckinghamshire and Oxfordshire Oxfordshire
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Links
Total cost
€ 5 348 627,00

Participants (4)