Cancer Research Campaign trial for the treatment of women with early breast cancer: the role of local prophylactic radiotherapy

Prospectively registered

Protocol

Statistical analysis plan

Results

Individual participant data

Record updated in last year

Plain English summary of protocol

Not provided at time of registration

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Scientific

UKCCCR Register Co-ordinator
MRC Clinical Trials Unit
222 Euston Road
London
NW1 2DA
United Kingdom

Primary study design	Interventional
Study design	Randomised controlled trial
Secondary study design	Randomised controlled trial
Study type	Participant information sheet
Scientific title	Cancer Research Campaign trial for the treatment of women with early breast cancer: the role of local prophylactic radiotherapy
Study objectives	Not provided at time of registration
Ethics approval(s)	Not provided at time of registration
Health condition(s) or problem(s) studied	Breast cancer
Intervention	1. Group A: Radiotherapy according to local practise 2. Group B: Watch policy
Intervention type	Other
Primary outcome measure(s)	Not provided at time of registration
Key secondary outcome measure(s)	Not provided at time of registration
Completion date	31/12/2000

Participant type(s)	Patient
Age group	Adult
Sex	Female
Key inclusion criteria	1. Operable early breast cancer 2. Uncertainty as to the need for radiotherapy 3. Fit to receive radiotherapy 4. Any age
Key exclusion criteria	Not provided at time of registration
Date of first enrolment	01/01/1998
Date of final enrolment	31/12/2000

MRC Clinical Trials Unit

London
NW1 2DA
United Kingdom

Individual participant data (IPD) Intention to share	No
IPD sharing plan summary
IPD sharing plan

Output type	Details	Date created	Date added	Peer reviewed?	Patient-facing?
Participant information sheet	Participant information sheet	11/11/2025	11/11/2025	No	Yes