Prospective randomised clinical trial testing 5.7 Gy and 6.0 Gy fractions of whole breast radiotherapy in terms of late normal tissue responses and tumour control

ISRCTN ISRCTN62488883
DOI https://doi.org/10.1186/ISRCTN62488883
ClinicalTrials.gov (NCT) NCT00107497
Protocol serial number N/A
Sponsor Institute of Cancer Research (UK)
Funder Research costs are covered by the Cancer Research UK (CRUK) core grant held by the Institute of Cancer Research Clinical Trials and Statistics Unit (ICR-CTSU).
Submission date
01/10/2004
Registration date
10/01/2005
Last edited
06/10/2021
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Cancer
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

http://www.cancerresearchuk.org/cancer-help/trials/a-trial-looking-at-different-ways-of-giving-radiotherapy-for-women-with-early-breast-cancer

Contact information

Prof John Yarnold
Scientific

Academic Radiotherapy
Royal Marsden Hospital
Downs Road
Sutton
SM2 5PT
United Kingdom

Phone +44 (0)20 8661 3388
Email john.yarnold@icr.ac.uk

Study information

Primary study designInterventional
Study designRandomised controlled trial
Secondary study designRandomised controlled trial
Study type Participant information sheet
Scientific titleProspective randomised clinical trial testing 5.7 Gy and 6.0 Gy fractions of whole breast radiotherapy in terms of late normal tissue responses and tumour control
Study acronymFAST
Study objectivesAim: to test 5 fractions of 5.7 Gy and 6.0 Gy against 25 fractions of 2.0 Gy in terms of late normal tissue effects and tumour control in women prescribed whole breast radiotherapy (no boost) after local excision of early breast cancer.
Ethics approval(s)Added 30/07/2008: South West MREC (04/MRE06/17) - approved 30/06/2004.
Health condition(s) or problem(s) studiedEarly breast cancer
InterventionControl arm: 50 Gy in 25 fractions over 5 weeks
Test arm 1: 30 Gy in 5 fractions over 5 weeks
Test arm 2: 28.5 Gy in 5 fractions over 5 weeks
Intervention typeOther
Primary outcome measure(s)

Change in photographic breast appearance.

Key secondary outcome measure(s)

Tumour recurrence in the breast.

Completion date09/03/2007

Eligibility

Participant type(s)Patient
Age groupAdult
SexFemale
Target sample size at registration900
Total final enrolment915
Key inclusion criteria1. Women over the age of 49 years with invasive breast cancer who have had breast preserving surgery
2. Tumour size less than 3 cm with complete resection and node negative
Key exclusion criteria1. Age less than 50 years
2. Mastectomy
3. Lymphatic radiotherapy or radiotherapy boost
4. Neoadjuvant or adjuvant cytotoxic therapy
Date of first enrolment01/10/2004
Date of final enrolment09/03/2007

Locations

Countries of recruitment

  • United Kingdom
  • England

Study participating centre

Academic Radiotherapy
Sutton
SM2 5PT
United Kingdom

Results and Publications

Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request
IPD sharing plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 01/07/2011 Yes No
Results article 14/07/2020 06/10/2021 Yes No
Participant information sheet Participant information sheet 11/11/2025 11/11/2025 No Yes
Study website Study website 11/11/2025 11/11/2025 No Yes

Editorial Notes

06/10/2021: Publication reference and total final enrolment added.