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TARGeted Intraoperative radioTherapy as a tumour bed Boost (TARGIT-B): To compare targeted intra-operative radiotherapy boost with conventional external beam radiotherapy boost after lumpectomy for breast cancer in women with a high risk of local recurrence

TARGIT-B: An international randomised controlled trial to compare targeted intra-operative radiotherapy boost with conventional external beam radiotherapy boost after lumpectomy for breast cancer in women with a high risk of local recurrence

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN43138042
Enrollment
1796
Registered
2012-10-10
Start date
2013-03-01
Completion date
Unknown
Last updated
2024-11-12

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

Conditions

Early breast cancer Cancer Malignant neoplasm of breast

Interventions

Current interventions as of 09/05/2024: Eligible patients are those with a higher risk (8% at 5 years) of local recurrence after breast-conserving surgery. After giving consent patients are randomised

Sponsors

University College London (UK)
Lead Sponsor

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: Patients diagnosed with breast cancer and suitable for conserving surgery and radiotherapy, with a cytological or histological confirmation of carcinoma can be included in the study once written informed consent is obtained. All patients should be available for regular follow-up (according to local policies) for at least ten years. At least one of these criteria must be satisfied: 1. Less than 46 years of age 2. More than 45 years of age, but with one of the following poor prognostic factors: 2.1. Lymphovascular invasion 2.2. Gross nodal involvement (not micrometastasis) 2.3. More than one tumour in the breast but still suitable for breast-conserving surgery through a single specimen 3. More than 45 years of age, but with at least two of the following poor prognostic factors 3.1. ER-negative 3.2. Grade 3 histology 3.3. Positive margins at first excision 4. Those patients with large tumours which have responded to neo-adjuvant chemo- or hormone therapy in an attempt to shrink the tumour and are suitable for breast-conserving surgery as a result 5. Lobular carcinoma or Extensive Intraductal Component (EIC) 6. A combination of high-risk factors are present (as predefined in the policy document) that give a high risk of local recurrence

Exclusion criteria

Exclusion criteria: 1. Bilateral breast cancer at the time of diagnosis 2. Patients with any severe concomitant disease that may limit their life expectancy 3. Previous history of malignant disease does not preclude entry if the expectation of relapse-free survival at 10 years is 90% or greater (e.g., non-melanoma skin cancer, CIN etc) 4. No more than 30 days can have elapsed between last breast cancer surgery (not axillary) and randomisation for patients in the post-pathology stratification unless part of a specific clinical trial that addresses the question of timing or tumour bed can be reliably identified, e.g. by ultrasound

Design outcomes

Primary

MeasureTime frame
Local recurrence

Secondary

MeasureTime frame
1. Site of relapse within the breast 2. Relapse-free survival and overall survival 3. Local toxicity/morbidity

Countries

Australia, Canada, Denmark, England, France, Germany, Italy, Norway, Poland, Switzerland, United Kingdom, United States of America

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026