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Study identifier: NCT03946202 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

KORTUC Phase II - Intra-tumoural Radiation Sensitizer in Patients With Locally Advanced/Recurrent Breast Cancer

Condition: Breast Cancer  ·  Sponsor: Institute of Cancer Research, United Kingdom

PhasePhase 2
Planned participants184
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This is a study aimed at testing a commonly available and inexpensive chemical (hydrogen peroxide) for efficacy in sensitising large cancerous lumps in the breast to a standard course of radiotherapy in patients with locally advanced or recurrent breast cancer. Laboratory research and initial clinical trials in Japan suggest that 4 to 6 injections of a radiation sensitiser ('KORTUC') based on very dilute (0.5%) hydrogen peroxide injected into cancers under local anaesthetic twice a week during radiotherapy greatly increases the effectiveness of standard doses of radiotherapy alone. The side effects are limited to mild/moderate discomfort at the injection site for up to 24 hours reported by Japanese breast cancer patients in whom this treatment has been tested. Complete tumour shrinkage in 70/71 (98%) primary breast cancers up to 5 cm diameter have been reported by Japanese collaborators.

This description comes directly from the study's public registry record.

Talk to the study team

Lone Gothard  ·  +44(0)2086613460  ·  lone.gothard@icr.ac.uk

Justine Hughes  ·  +44(0)2086613273  ·  justine.hughes@icr.ac.uk

Always discuss trial participation with your own doctor first.

Locations (10)

Regional Cancer Centre (RCC)Trivandrum, Kerala, IndiaRecruiting
Christian Medical CentreVellore, Tamil Nadu, IndiaRecruiting
Tata Medical CentreKolkata, West Bengal, IndiaRecruiting
Tata Memorial CentreMumbai, IndiaRecruiting
Royal Cornwall Hospitals NHS TrustTruro, Cornwall, United KingdomRecruiting
Beatson West of Scotland Cancer CentreGlasgow, Scotland, United KingdomRecruiting
Cambridge University Hospitals NHS Foundation TrustCambridge, United KingdomRecruiting
The Christie NHS Foundation TrustManchester, United KingdomRecruiting
University Hospitals of North Midlands NHS TrustStoke-on-Trent, United KingdomRecruiting
The Royal Marsden NHS Foundation TrustSutton, United KingdomRecruiting

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Source record: clinicaltrials.gov/study/NCT03946202