Radiation After No Axillary Nodal Sampling (RADIANS)

July 20, 2026 updated by: NYU Langone Health

RADIation After no Axillary Nodal Sampling (RADIANS)

This is a single arm, pilot, prospective study to evaluate the safety of partial breast irradiation in women who undergo breast conserving surgery without sentinel lymph node biopsy (SLNB) or axillary lymph node dissection (ALND). Baseline demographic and clinical information will be collected. All patients will complete the Breast Cancer Treatment Outcome Scale (BCTOS-13) questionnaire and the Functional Assessment of Chronic Illness Therapy-Comprehensive Score for financial Toxicity at baseline and at 2 years. All patients are required to have an axillary ultrasound prior to radiation start if this was not obtained pre-operatively.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
105

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • New York
      • New York, New York, United States, 10016
        • Recruiting
        • NYU Langone Health

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Individuals assigned Female at birth, age 40 and older
  • Breast conserving surgery without SLNB or ALND
  • All patients should be capable of giving informed consent,
  • Willingness and ability to comply with scheduled visits, treatment plans, laboratory tests, and other study procedures.
  • Histologically confirmed invasive ductal carcinoma
  • Individuals with pathologic tumor size <3cm
  • Patients in whom partial breast is deemed technically not possible due to breast size will be considered screen failures and excluded from the trial.
  • Clinically and radiologically node-negative (no palpable nodes, negative axillary imaging)
  • Electrocorticography (ECOG) performance status 0-2

Exclusion Criteria:

  • Male
  • Transgender or non-binary individuals.
  • Mastectomy
  • Metastatic disease
  • History of ipsilateral or contralateral breast cancer.
  • Obstacles to obtaining informed consent or undergoing regular follow-up

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Early-Stage Breast Cancer Patients
Patients in whom a sentinel lymph node biopsy is omitted will receive Partial Breast Irradiation (PBI).
Radiation: Partial Breast Irradiation (PBI)
Delivered using 3D or 3D/IMRT or IMRT techniques following breast-conserving surgery.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Rate of Axillary Recurrence
Time Frame: Up to Year 5-post-radiation
Proportion of patients in whom the return of breast cancer in the lymph nodes of the armpit is observed.
Up to Year 5-post-radiation

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Rate of Local Recurrence
Time Frame: Up to Year 5-post-radiation
Proportion of patients in whom the return of breast cancer to the same area as the original tumor is observed.
Up to Year 5-post-radiation
Rate of Distant Recurrence
Time Frame: Up to Year 5-post-radiation
Proportion of patients in whom the return of breast cancer to a different area from the original tumor is observed.
Up to Year 5-post-radiation
Breast-Cancer Specific Survival
Time Frame: Up to Year 5-post-radiation
Time from initiation of treatment to death attributed to breast cancer.
Up to Year 5-post-radiation
Overall Survival
Time Frame: Up to Year 5-post-radiation
Time from initiation of treatment to death due to any cause.
Up to Year 5-post-radiation
Rate of Endocrine Therapy Initiation
Time Frame: Up to Year 5-post-radiation
Proportion of patients who initiate endocrine therapy.
Up to Year 5-post-radiation
Rate of Endocrine Therapy Adherence
Time Frame: Up to Year 5-post-radiation
Proportion of patients who display adherence to endocrine therapy following initiation.
Up to Year 5-post-radiation
Change in Breast Cancer Treatment Outcome Scale (BCTOS-13) Score
Time Frame: Baseline, Year 2 Post-Radiation
BCTOS-13 is a 13-item assessment of aesthetic and functional changes following breast-conserving therapy. Each item is rated on a Likert scale from 1-4; the total score is the average of the item responses and ranges from 1.0 - 4.0. Lower scores indicate a better outcome, meaning the patient perceives less difference between the treated and untreated breast
Baseline, Year 2 Post-Radiation
Functional Assessment of Chronic Illness Therapy - COmprehensive Score for Financial Toxicity (COST-FACIT)
Time Frame: Baseline, Year 2 Post-Radiation
OST-FACIT is a patient-reported questionnaire designed to measure the financial distress and hardship caused by medical treatments for chronic illnesses. 11 items are rated on a scale from 0-4; the total score is the sum of responses and ranges from 0-44. Higher scores indicate less financial distress.
Baseline, Year 2 Post-Radiation

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
NYU Langone Health

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Naamit Gerber, MD, NYU Langone Health

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 9, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 31, 2034

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 31, 2034

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 20, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 20, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 23, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 23, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 20, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 25-01450

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

No plans to share de-identified IPD with other researchers at this time.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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