Neoadjuvant chemotherapy followed by radiation therapy for breast cancer patients

Neoadjuvant Chemotherapy Followed by Radiotherapy Alone in Patients With Breast Cancer

Phase 2 Interventional Instituto do Cancer do Estado de São Paulo · NCT03213925

This study tests if giving radiation therapy alone after chemotherapy can help older breast cancer patients who have no signs of cancer avoid surgery.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment1 (estimated)
Ages40 Years to 75 Years
SexFemale
SponsorInstituto do Cancer do Estado de São Paulo Academic / other
Drugs / interventionschemotherapy, radiation
Locations1 site (São Paulo)
Trial IDNCT03213925 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the effectiveness of administering radiation therapy alone after neoadjuvant chemotherapy in patients with breast cancer who have achieved a complete response. The study aims to determine if surgical intervention can be avoided in this subgroup of patients, potentially streamlining treatment and reducing the need for invasive procedures. Participants will receive radiation therapy without undergoing surgery, allowing researchers to assess the outcomes of this approach. The trial focuses on patients aged 40 and older with specific clinical stages of breast cancer.

Who should consider this trial

Good fit: Ideal candidates for this study are women aged 40 and older with pathologically confirmed unicentric invasive breast cancer who have responded completely to neoadjuvant chemotherapy.

Not a fit: Patients with prior cancer diagnoses (except certain in situ tumors), those who are pregnant, or individuals who have previously received radiation therapy in the thoracic region may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could reduce the need for surgery in certain breast cancer patients, leading to less invasive treatment options.

How similar studies have performed: While the approach of avoiding surgery in favor of radiation therapy is innovative, similar studies have shown promise in reducing surgical interventions for certain cancer patients.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 40 years or older
* Pathologically confirmed unicentric invasive breast cancer
* Clinical stage T1-3 / N0 or N2 / M0
* Clinical conditions to receive neoadjuvant chemotherapy

Exclusion Criteria:

* Prior diagnosis of cancer (exception: in situ cervical tumor and non-melanoma skin)
* Patient is known to be pregnant
* Prior history of radiation therapy in the thoracic region
* Impossibility to perform magnetic resonance imaging

Where this trial is running

São Paulo

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Breast CancerRadiation Therapy
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.