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Randomised trial testing dose escalated intensity modulated radiotherapy in women with higher than average local tumour recurrence risk after breast conservation therapy for early breast cancer

Randomised trial testing dose escalated intensity modulated radiotherapy in women with higher than average local tumour recurrence risk after breast conservation therapy for early breast cancer

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN47437448
Enrollment
2568
Registered
2007-04-17
Start date
2009-03-04
Completion date
Unknown
Last updated
2025-12-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast cancer Cancer Malignant neoplasm of breast

Interventions

The control arm will have standard dose radiotherapy to the whole breast Monday to Friday for 3 weeks (15 treatments). This will be followed by a sequential boost dose to the tumour bed Monday to Frid

Sponsors

Institute of Cancer Research (UK)
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
18 Years to 100 Years

Inclusion criteria

Inclusion criteria: Current inclusion criteria as of 26/02/2019: 1. Operable unilateral breast cancer (T1-3, pN0- pN3a, M0 at presentation) 2. Breast conserving surgery 3. Age greater than or equal to 18 years 4. Histological confirmation of invasive carcinoma 5. Complete microscopic resection 6. Patient requires a tumour bed boost plus whole breast radiotherapy for inclusion within the trial 7. Written informed consent and available for follow-up Previous inclusion criteria: 1. Age greater than or equal to 18 years 2. Operable, unilateral breast cancer (T1-3, N0-1, M0 at presentation) 3. Breast conserving surgery 4. Histological confirmation of invasive carcinoma 5. Complete microscopic resection 6. Patient requires a tumour bed boost plus whole breast radiotherapy 7. Written informed consent and availability for follow-up

Exclusion criteria

Exclusion criteria: Current exclusion criteria as of 26/02/2019: 1. Past history of malignancy except: 1.1. Basal cell skin cancer and CIN cervix uteri or 1.2. Non breast malignancy allowed if treated with curative intent and at least 5 years disease-free 2. Mastectomy 3. Concomitant chemotherapy (primary or sequential chemotherapy allowed). 4. Presence of ipsilateral breast implant Previous exclusion criteria: 1. Previous malignancy (other than non-melanomatous skin cancer and Carcinoma In Situ [CIS] of the cervix) 2. Mastectomy 3. Concomitant chemotherapy (sequential chemotherapy allowed) 4. Radiotherapy prescription includes posterior axillary boost field

Design outcomes

Primary

MeasureTime frame
Current primary outcome measure as of 26/02/2019: Local tumour control measured by reported ipsilateral events at 5 years Previous primary outcome measure: Palpable induration in the ipsilateral breast, measured at yearly follow-up visits by physician examination and also at baseline (before radiotherapy) and at years 3 and 5 by photographic assessment years. Outcome from these will be correlated at years 3 and 5.

Secondary

MeasureTime frame
Current secondary outcome measures as of 26/02/2019: 1. Induration in the ipsilateral breast by clinician assessed changes, patient reported changes, photographic assessments at baseline and 5 years 2. Other late adverse effects in normal tissues reported on CRFs by clinical assessment at 5 years 3. Quality of life reported by patients at baseline, 6 months, 1, 3 and 5 years 4. Location of tumour relapse in breast reported on CRFs and/or assessed by review of scans at 5 years 5. Contralateral primary tumours reported by CRFs at 5 years 6. Regional and distant metastases reported by CRFs at 5 years 7. Survival reported by CRFs at 5 years Previous secondary outcome measures: 1. Quality of life, measured at baseline, 6 months and years 1, 3 and 5 Other secondary outcomes will be measured at annual follow up visits for 10 years and also during the trial by completion of case report forms: 2. Other late adverse effects of radiotherapy in normal tissues 3. Local tumour control 4. Location of tumour relapse in breast 5. Contralateral primary tumours 6. Regional and distant metastases 7. Survival

Countries

England, United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 8, 2026