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Postoperative Radiotherapy in Breast Cancer- Concurrent or Sequential With Chemotherapy

Phase III Randomized Controlled Trial of Sequential Chemotherapy and Radiotherapy Versus Concurrent Chemoradiotherapy in Adjuvant Treatment of Breast Cancer (CONCERT)

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06926543
Acronym
CONCERT
Enrollment
858
Registered
2025-04-13
Start date
2024-05-14
Completion date
2031-05-31
Last updated
2025-04-13

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

Conditions

Invasive Breast Cancer, Stage IIB Breast Cancer, Stage III Breast Cancer

Keywords

Invasive breast cancer, Chemoradiation, Sequential, Concurrent, adjuvant therapy

Brief summary

This clinical research aims to determine if concurrent chemotherapy and radiation therapy is more effective than sequential chemotherapy and radiation therapy for patients with stage IIB-III breast cancer. It seeks to answer the following key questions: 1. When compared to sequential treatment, does concurrent chemoradiotherapy increase disease-free survival? 2. What effects does concurrent treatment have on post-operative look, quality of life, and side effects including arm swelling (lymphoedema)? 3. What are each treatment approach's financial costs? Researchers will compare the following to groups: Arm A: Participants in the sequential treatment group will first undergo chemotherapy and then radiation. and Arm B: Participants in the concurrent treatment group will undergo radiation therapy while undergoing chemotherapy. Participants are going to: 1. Get the usual chemotherapy (taxanes and/or anthracyclines). 2. Receive radiation therapy for three to four weeks. 3. Have follow-up visits every 6months for 5years to check for cancer recurrence, side effects, and quality of life.

Interventions

DRUGChemoradiation

This intervention will consist of getting chemotherapy followed by radiotherapy, i.e, in a sequential manner

Sponsors

Dr. Tabassum Wadasadawala
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Pathologically confirmed invasive breast cancer 2. Stage IIB-III invasive breast cancer (AJCC 8th edition) 3. Patients planned for adjuvant chemotherapy and adjuvant radiotherapy 4. Patients fit to receive adjuvant chemotherapy and radiotherapy 5. Age \> 18 years

Exclusion criteria

1. Hypersensitivity to taxanes 2. Patients receiving entire chemotherapy prior to surgery (neoadjuvant setting) 3. Unable or unwilling for regular follow up 4. Bilateral tumour needed RT to both sides 5. Patients planned for RT to oligometastatic sites 6. Unfavourable anatomical factors potentially leading to higher radiotherapy dose to heart and/or lungs (Exceeding the protocol specific mandatory dose constraints). 7. Pregnant patient

Design outcomes

Primary

MeasureTime frame
Study the 3-year Disease Free Survival.From enrollment to 3 years after treatment at six months intervals.

Secondary

MeasureTime frameDescription
Subjective and objective assessment of cosmesis in breast-conserving surgery patients, utilizing the Harvard scale and the BCCT core photographic evaluation, respectively.From enrollment at pre-raditherapy, post-radiotherapy completion and on follow up at 12-monthly interval up to 3 years.All patients who undergo breast conservation surgery will be eligible for this sub-study in which we intend to collect frontal breast photographs for objective assessment of breast cosmesis.
The difference in direct and indirect cost of treatment in the two arms will be assessed using the FACT-COST.From enrollment at start of adjuvant chemotherapy, pre-radiotherapy and at post radiotherapy treatment.As patients in the intervention arm will complete their treatment at least 6-8 weeks before the patients in the standard arm, it will have huge impact on the expenditure that the patient bears for staying, food as well as transport to the hospital. Hence, we would like to collect data pertaining to patient's daily expenditure during their adjuvant treatment.
Impact of concurrent regimen on patient's Quality of life using the EORTC QLQ 30 and BR 23 and EQ5D5L questionnaire.From enrollment at pre-raditherapy, post-radiotherapy completion and on follow up at 12-monthly interval up to 3 years.
Overall survival (OS)outcome assessment in the two arms.From enrollment to 5 years after treatment at 6 months intervals
Breast Cancer Specific Survival (BCSS) will be assessed with regular follow-ups.From enrollment to 5 years after treatment at 6 months intervals
To assess the rate of lymphedema in the two arms of the trial using subjective and objective methodsFrom enrollment at pre-radiotherapy, post-radiotherapy completion and annually thereafter till 3 yearsAs the breast cancer treatment increases the risk of swelling in the upper limb, we would like to assess for the same. This will help us to diagnose lymphedema at an early stage and will be able to treat it more effectively.

Countries

India

Contacts

Primary ContactTabassum Wadasadawala, MD, DNB Radiotherapy
drtabs.radonc@gmail.com(+91-22) 24177026

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026