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FibrosisPhase 2NCT03795116

Light Emitting Diode-Red Light (LED-RL) Phototherapy for Skin Scarring Prevention

A Phase 2 study testing LED-RL phototherapy and Mock irradiation in people with Fibrosis and Skin Scarring, run by State University of New York - Downstate Medical Center at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

Skin scarring (fibrosis) is a common complication in the wound healing process and remains a therapeutic challenge. Scar formation often occurs following injury to the skin such as surgery, trauma, and burns. Read more about this study

Who is it for?
Any ageHealthy volunteers can take part
Conditions the study is for
Fibrosis, Skin Scarring, Skin Wound
What is being tested?
LED-RL phototherapy and Mock irradiation
Type of treatment
Medical device
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
30 participants
Where
1 siteUnited States
Study dates
18 Mar 2019to 26 Oct 2020
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Any age
  • All sexes
  • Healthy volunteers accepted
  • Child, Adult, Older adult

Who may be able to join

  • Provision of written informed consent for all study procedures
  • Stated willingness to comply with all study procedures and availability for the duration of the study
  • Suitable candidate for elective mini-facelift surgery
  • Pass a screening photosensitivity test

Who cannot join

  • Current use of any photosensitizing medications
  • Light-sensitive conditions
  • Diabetes mellitus
  • Systemic lupus erythematosus
  • Current tobacco use
  • History of bleeding or coagulation disorder
Show all 12Show fewer
  • Lax skin associated with genetic disorders
  • Open wounds on the face or neck
  • Fibrotic skin disease, pre-existing scar(s), or other skin conditions affecting the periauricular skin
  • History of surgery or procedure involving or affecting the periauricular skin within the past 6 months (e.g., prior facelift, fillers, laser therapy)
  • Tattoos that cover the proposed treatment sites on the periauricular skin
  • Any other medical condition(s) that could be compromised by exposure to the proposed treatment

Trial locations and contacts

1 site in 1 country.

United States1 site
  • SUNY Downstate Medical Center

    Brooklyn, New York, 11203

Other trials in United States

About this study

Skin scarring (fibrosis) is a common complication in the wound healing process and remains a therapeutic challenge. Scar formation often occurs following injury to the skin such as surgery, trauma, and burns. The goal of this study is to evaluate the safety and efficacy of visible red light as a modality to reduce skin scarring after mini-facelift surgery. Based on laboratory data, light emitting diode-red light (LED-RL) phototherapy may lessen post-surgical skin fibrosis clinically.

Read the detailed description

Skin fibrosis is a significant global health problem that has a profoundly negative impact on quality of life. Characterized by excessive fibroblast proliferation and collagen deposition, skin fibrosis underlies a wide spectrum of dermatologic conditions ranging from pathologic scars secondary to injury (e.g., burns, surgery, trauma) to immune-mediated diseases. Effective anti-scarring therapeutics remain an unmet need, underscoring the importance of developing novel approaches to treat and prevent skin fibrosis.

In vitro data show that LED-RL can modulate key cellular and molecular processes involved in skin fibrosis. Two phase I clinical trials (STARS 1 and STARS 2) demonstrated the safety and tolerability of LED-RL at fluences of 160 J/cm2 up to 480 J/cm2 on normal human skin. The administration of LED-RL phototherapy in the early postoperative period may optimize wound healing and prevent excessive scarring. The results from this study may change the current treatment paradigm for fibrotic skin diseases and help to pioneer LED-RL as a safe, non-invasive, cost-effective, portable, at-home therapy for scars.

Being tested
LED-RL phototherapy, Mock irradiation
Keywords
Light emitting diode, Light emitting diode-red light, Visible red light, Skin fibrosis, Wound healing, Scarring
Medical subject headings
Fibrosis, Cicatrix, Cicatrix, Hypertrophic, Keloid

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • LED-RL phototherapyDevice

    Also called Omnilux handheld LED system (GlobalMed Technologies, Glen Ellen, CA)

    The LED-RL treatment device has a 4.7 cm x 6.1 cm rectangular array of LEDs and emits visible red light (633 nm) at a power density of 360.2 W/m2 at room temperature and a distance of 10 mm from the target surface.

  • Mock irradiationDevice

    The mock therapy device is designed to sound, look, and feel identical to the LED-RL treatment device (i.e., has the same physical components and thermal output), except it does not emit visible red light.

Study groups in NCT03795116
Study groupRoleWhat they receive
LED-RL phototherapyExperimentalThirty subjects will be randomly allocated to three treatment groups to receive LED-RL phototherapy or temperature-matched mock irradiation (control) to either periauricular incision site at fluences of 160 J/cm2, 320 J/cm2, or 480 J/cm2. Starting one week after surgery (postoperative days 4-8), treatments will be administered three times weekly for three consecutive weeks.
Receives: Device: LED-RL phototherapy
Mock irradiationSham comparatorThirty subjects will be randomly allocated to three treatment groups to receive LED-RL phototherapy or temperature-matched mock irradiation (control) to either periauricular incision site at fluences of 160 J/cm2, 320 J/cm2, or 480 J/cm2. Starting one week after surgery (postoperative days 4-8), treatments will be administered three times weekly for three consecutive weeks.
Receives: Device: Mock irradiation

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in Scar Pliability Between the Treated and Control Incision Sites as Measured by Skin Elasticity at 6 Months Compared to Baseline

    The ElastiMeter, a non-invasive indentation instrument, will be used to evaluate skin elasticity (i.e., skin stiffness) of the LED-RL-treated scar versus the untreated scar. Skin elasticity is measured in Newtons/meters (N/m).

    Measured: 1 month, 3 months, 6 months

  2. Change in Scar Pliability Between the Treated and Control Incision Sites as Measured by Skin Induration at Three Follow-up Time Points Compared to Baseline

    The SkinFibroMeter, a non-invasive indentation instrument, will be used to evaluate the induration of the skin and subcutaneous tissue (i.e., hardness) of the LED-RL-treated scar versus the untreated scar. Skin induration is measured in Newtons (N).

    Measured: Baseline assessment was completed on post-operative day 5, before LED-RL or mock phototherapy treatment. Follow-up visits were scheduled on approximately post-operative day 30 (1 month), post-operative 90 (3 months), and post-operative day 180 (6 months).

Secondary outcomes (10)
  1. Observer Scar Assessment Scale

    The scale consists of six items rated from 1 to 10, where 1 is "normal skin" and 10 is the "worst imaginable scar". The observer (i.e., investigator) evaluates scar vascularity, pigmentation, thickness, relief, pliability, and surface area. The scores of each of the six items are summed for a total score (range 6 to 60).

    Measured: Baseline assessment was completed on post-operative day 5, before LED-RL or mock phototherapy treatment. Follow-up visits were scheduled on approximately post-operative day 30 (1 month), post-operative 90 (3 months), and post-operative day 180 (6 months).

  2. Visual Analog Scale (VAS) Scoring of Digital Photographs of Scars

    The scar images will be rated by two independent, blinded dermatologists using a VAS. The VAS is presented as a 10 cm horizontal line, where the extreme ends of 0 indicates "normal skin" and 10 corresponds to the "worst possible scar," for each of the following scar attributes: pigmentation, vascularity, observer comfort, contour, and overall severity.

    Measured: Baseline assessment was completed on post-operative day 5, before LED-RL or mock phototherapy treatment. Follow-up visits were scheduled on approximately post-operative day 30 (1 month), post-operative 90 (3 months), and post-operative day 180 (6 months).

  3. Dermal Collagen Concentration

    A non-invasive, handheld diffuse reflectance probe will be used to measure collagen concentration in the dermis at each incision site. The scale ranges from 10 to 99 and the collagen measurement corresponds to the half of the optical scattering coefficient of the dermis.

    Measured: Baseline assessment was completed on post-operative day 5, before LED-RL or mock phototherapy treatment. Follow-up visits were scheduled on approximately post-operative day 30 (1 month), post-operative 90 (3 months), and post-operative day 180 (6 months).

  4. Dermal Water Concentration

    A non-invasive, handheld diffuse reflectance probe will be used to measure water concentration in the dermis at each incision site. Infrared light is emitted at different wavelengths to retrieve the scattering and the absorption coefficients of the dermis. The more water, the less reflectance. Concentration ranges from 40% to 85%.

    Measured: Baseline assessment was completed on post-operative day 5, before LED-RL or mock phototherapy treatment. Follow-up visits were scheduled on approximately post-operative day 30 (1 month), post-operative 90 (3 months), and post-operative day 180 (6 months).

  5. 3D Imaging Analysis: Pigmentation of Scar Tissue

    A 3D digital imaging system will be used to construct 3D images of the scars for colorimetric analyses, including quantitative measurements of pigmentation at each incision site.

    Measured: Baseline assessment was completed on post-operative day 5, before LED-RL or mock phototherapy treatment. Follow-up visits were scheduled on approximately post-operative day 30 (1 month), post-operative 90 (3 months), and post-operative day 180 (6 months).

  6. 3D Imaging Analysis: Vascularity of Scar Tissue

    A 3D digital imaging system will be used to construct 3D images of the scars for colorimetric analyses, including quantitative measurements of vascularity at each incision site.

    Measured: Baseline assessment was completed on post-operative day 5, before LED-RL or mock phototherapy treatment. Follow-up visits were scheduled on approximately post-operative day 30 (1 month), post-operative 90 (3 months), and post-operative day 180 (6 months).

  7. 3D Imaging Analysis: Volume of Elevation of Scar Tissue

    A 3D digital imaging system will be used to construct 3D images of the scars for skin profilometry analyses, including quantitative measurements of tissue volume at each incision site.

    Measured: Baseline assessment was completed on post-operative day 5, before LED-RL or mock phototherapy treatment. Follow-up visits were scheduled on approximately post-operative day 30 (1 month), post-operative 90 (3 months), and post-operative day 180 (6 months).

  8. Histological Analysis: Collagen Content of Scar Tissue (Optional)

    The histological changes that occur in vivo in response to LED-RL phototherapy will be evaluated by examination of pre- and post-treated skin tissue. Skin specimens will be obtained via optional 2 mm punch biopsy and stained for collagen fibers.

    Measured: Skin specimens will be obtained via optional 2 mm punch biopsy on post-operative day 0 (prior to surgery) and post-operative day 30 (first follow-up visit after completion of LED-RL treatment).

  9. Number of Participants Experiencing Adverse Events in Each Treatment Group

    Subjects will be provided with a daily diary to record any adverse events experienced during the three-week intervention period. Treatment sessions will be monitored closely for the occurrence of any safety issues or adverse events, as reported by the subject or observed by the clinical research team. At each follow up visit, patients will be asked about adverse effects.

    Measured: From first LED-RL and mock phototherapy treatment session on post-operative day 5 until final follow-up visit on post-operative day 180 (6 month follow-up).

  10. Patient Scar Assessment Scale

    The scale consists of six items rated from 1 to 10, where 1 is "normal skin" and 10 is the "worst imaginable scar". The patient assesses pain, itching, color, stiffness, thickness, and irregularity. The scores of each of the six items are summed for a total score (range 6 to 60).

    Measured: Baseline assessment was completed on post-operative day 5, before LED-RL or mock phototherapy treatment. Follow-up visits were scheduled on approximately post-operative day 30 (1 month), post-operative 90 (3 months), and post-operative day 180 (6 months).

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted7 Jan 2019
  2. Study start18 Mar 2019
  3. Primary completion26 Oct 2020
  4. Study completion26 Oct 2020

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Outcomes assessor
Enrolment
30 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03795116
Sponsor's protocol ID
1304108
Status last verified
May 2022
First submitted
20 Dec 2018
Last updated
1 Jun 2022
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
Individual data sharing
No

Publications

  • Nguyen JK, Weedon J, Jakus J, Heilman E, Isseroff RR, Siegel DM, Jagdeo JR. A dose-ranging, parallel group, split-face, single-blind phase II study of light emitting diode-red light (LED-RL) for skin scarring prevention: study protocol for a randomized controlled trial. Trials. 2019 Jul 15;20(1):432. doi: 10.1186/s13063-019-3546-6.

    PubMed 31307501

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing LED-RL phototherapy and Mock irradiation in people with Fibrosis and Skin Scarring, run by State University of New York - Downstate Medical Center at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 12 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 1 Jun 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 1 Jun 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in Scar Pliability Between the Treated and Control Incision Sites as Measured by Skin Elasticity at 6 Months Compared to Baseline (time frame: 1 month, 3 months, 6 months). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03795116, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Jun 2022.

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