Impact of Photobiomodulation (PBM) on Biomarkers of Radiation Lymphedema and Fibrosis in Head and Neck Cancer Patients (PBM-LEF)

March 24, 2026 updated by: NYU Langone Health

PBM-LEF Study: The Impact of PBM on Biomarkers of Radiation Lymphedema and Fibrosis in Head and Neck Cancer Patients: A Feasibility Study

Radiation fibrosis syndrome (RFS) is a general side effect of radiation therapy (RT) which can adversely impact patients chronically over years typically triggered by an acute inflammatory state that evolves into chronic inflammation and tissue remodeling causing lymphedema, fibrosis, pain, atrophy and organ dysfunction. Some of the side effects that encompass RFS in the head and neck (HNC) population include decreased ability to fully open the mouth (trismus), neck pain and tightness (cervical dystonia), lymphedema (swelling), difficult with speech and swallowing and salivary hypofunction. Although there is Level I evidence demonstrating the benefit of Photobiomodulation (PBM) therapy to prevent acute mucositis in HNC patients treated with RT, there is only limited data regarding its impact.

This is a clinical trial to compare active treatment (PBM-therapy) with sham control (Sham- therapy). Up to 60 patients will be randomized to the two groups with equal allocation to estimate the efficacy (soft tissue thickness) of external Photobiomodulation (PBM) with light-emitting diode (LED) planned therapy for the treatment of radiation fibrosis syndrome (RFS) in head and neck cancer (HNC) patients who have undergone radiation therapy (RT) compared with sham control.

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.
60

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 Contact Backup

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:

  • Patients treated with radiation for head and neck cancer who are ≥ 3 months < 36 months post-RT (last RT).
  • Patients who received at least 50Gy of bilateral neck RT. Subjects who received RT or concurrent chemoradiation (chemoRT) therapy for HNC are eligible.
  • No evidence of disease as documented by imaging 3 months after completion of RT.
  • Common Terminology Criteria for Adverse Events (CTCAE) fibrosis score ≥ 2 at enrollment.
  • Patient who has body mass index (BMI) >30 at the time of enrollment may be excluded at a discretion of the principal investigator if fibrotic areas cannot be identified by clinical objective assessment of fibrosis.
  • Willing to comply with all study procedures and be available for the duration of the study.

Exclusion Criteria:

  • Woman who are pregnant or planning to become pregnant or breast-feeding.
  • Patients enrolled on another drug or device investigational trial for prevention or treatment of LEF.
  • Patients deprived of freedom, under supervision or guardianship.
  • Patients unable to attend to scheduled visits due to geographical, social or mental reasons.
  • Patients who received prior PBM therapy for RT toxicities in the last year;
  • Patients who report being photosensitive.
  • Patients who have chronic immunosuppression or are on current immunosuppressive therapies.
  • Any patient who, in the opinion of the investigator, is unable or unlikely to comply fully with the study requirements or procedures for any reason.

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: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

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: Active Treatment: PBM Therapy

Participants who received bilateral neck RT will be treated with PBM to a total of 12 sites - 6 sites on each side of the neck and face along the 3 neck nodal levels (II, III, IV) of the sternocleidomastoid muscle (SCM), along the major salivary glands (parotid, and submandibular) and masseter].

Treatment will occur at two timepoints:

  • At least 3 months and less than 18 months after RT completion of last dose to any site
  • Between 18 and 36 months after RT completion of last dose to any site
Device: Photobiomodulation (PBM) Therapy

PBM is a low-intensity form of light therapy and employs visible or near-infrared (NIR) light generated from a laser or Light Emitting Diode (LED).

In this study, PBM will be delivered using an LED device emitting 660 and 850nm with the purpose of research. The output power typically ranges from 5 to 200 mW with wavelengths ranging 600-1,000nm.
Sham Comparator: Sham Treatment

Participants who received bilateral neck RT will be treated with SHAM PBM to a total of 12 sites - 6 sites on each side of the neck and face along the 3 neck nodal levels (II, III, IV) of the sternocleidomastoid muscle (SCM), along the major salivary glands (parotid, and submandibular) and masseter].

Treatment will occur at two timepoints:

  • At least 3 months and less than 18 months after RT completion of last dose to any site
  • Between 18 and 36 months after RT completion of last dose to any site
Device: Sham PBM
Sham PBM will be delivered using a matching shame device that emits no output power.

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
Soft tissue thickness (STT) at Nodal Level II - Right Side
Time Frame: Baseline, Week 2 Post-Treatment
STT will be measured via ultrasound.
Baseline, Week 2 Post-Treatment
STT at Nodal Level II - Left Side
Time Frame: Baseline, Week 2 Post-Treatment
STT will be measured via ultrasound.
Baseline, Week 2 Post-Treatment
STT at Nodal Level III - Right Side
Time Frame: Baseline, Week 2 Post-Treatment
STT will be measured via ultrasound.
Baseline, Week 2 Post-Treatment
STT at Nodal Level III - Left Side
Time Frame: Baseline, Week 2 Post-Treatment
STT will be measured via ultrasound.
Baseline, Week 2 Post-Treatment
STT at Nodal Level IV - Right Side
Time Frame: Baseline, Week 2 Post-Treatment
STT will be measured via ultrasound.
Baseline, Week 2 Post-Treatment
STT at Nodal Level IV - Left Side
Time Frame: Baseline, Week 2 Post-Treatment
STT will be measured via ultrasound.
Baseline, Week 2 Post-Treatment

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: Kenneth Hu, 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.
February 13, 2025

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.
February 13, 2028

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.
February 13, 2030

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).
November 26, 2024

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.
November 26, 2024

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.
November 27, 2024

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.
March 30, 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.
March 24, 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.
March 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.
  • 19-00511

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

product manufactured in and exported from the U.S.

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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