- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04300010
Blue Light Therapy of C. Acnes
Efficacy of Blue Light Therapy in Reducing Cutibacterium Acnes Bioburden at the Deltopectoral Interval
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Participants will have two study visits (consent plus treatment and swabs for culture). These visits will be conducted at the main UW Hospital, UW Health at the American Center, or UW Health at 1 S. Park. All visits will be conducted in reserved conference rooms at each location.
Once a subject is determined to be eligible and has consented to the study, they will be randomized into one of three treatment groups. Study team has blank envelopes that contain one of the three treatment groups enclosed. After a subject consents to the study, the study team will randomly draw an envelope to assign a treatment arm.
Arm 1. One group will receive 5% topical benzoyl peroxide gel plus 2% chlorhexidine gluconate with 70% isopropyl alcohol
Arm 2. One group will receive blue light therapy plus 2% chlorhexidine gluconate with 70% isopropyl alcohol
Arm 3. One group will receive both of the above treatments
All participants will have their contralateral shoulder serve as the control (2% chlorhexidine gluconate with 70% isopropyl alcohol only). All treatment will be provided by the study team. Participants will also be asked to complete a research intake form.
If C. acnes does grow for a tissue culture, Investigators plan to bank a colony of the bacterium for potential use in a future study. There will be no added risk to research subjects as no additional cultures will be taken and samples will be completely anonymized. The banked samples will simply be a colony of growth from the culture media for storage for possible future use. Samples will be banked for 5 years from the date of study completion after which time the samples will be destroyed.
Study Type
Enrollment (Actual)
Phase
- Phase 4
Contacts and Locations
Study Locations
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Wisconsin
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Madison, Wisconsin, United States, 53792
- University of Wisconsin - Madison
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Healthy male
- 18 years or older
Exclusion Criteria:
- Allergy to benzoyl peroxide or chlorhexidine
- <18 years of age
- Previous history of shoulder infections
- Antibiotics taken within one month of research visit
- Immunocompromised state
- Active cancer
- Diabetic
- Skin lesions or abrasions over the deltopectoral interval
- Topical corticosteroid treatment to either shoulder or or systemic corticosteroid treatment within 2 weeks of research visit
- Topical benzoyl peroxide treatment to either shoulder within 2 weeks of research visit
- Blue light therapy treatment to either shoulder within 2 weeks of research visit
- Prior incision over the deltopectoral interval of either shoulder
- Contraindication to blue light treatment
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
ACTIVE_COMPARATOR: Blue Light Therapy
FDA cleared blue light product, Omniluxblue (Globalmed Technologies, Glen Elen, CA), which emits a 415 nm blue light irradiance of 40mW/cm2.
Following the application of blue light protective eyewear, the blue light therapy device will be centered over the deltopectoral interval according to device standardized use instructions and a 23-minute treatment will be administered to dry skin.
As was done in the topical BPO group, following treatment, a skin swab culture of the treatment shoulder will be taken, then both the treatment shoulder and control shoulder will be sterilely prepped with 2% chlorhexidine gluconate solution with 70% isopropyl alcohol and allowed to dry for 3 minutes.
Following chlorhexidine preparation, a single set of cultures will be obtained from each shoulder.
Participants and research personnel conducting the blue light treatments will be wearing medical grade blue light protective glasses for safety.
|
Blue light therapy treatment for acne
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ACTIVE_COMPARATOR: 5% Topical Benzoyl Peroxide Gel
A pea-sized amount, ~0.5 grams, will be applied to a 10cm strip over the deltopectoral interval beginning the morning 48 hours prior to schedule research visit to obtain cultures.
The benzoyl peroxide will be applied on dry skin after a shower.
The gel will be applied once in the morning and once in the evening for two consecutive days as well as the morning of the scheduled research visit.
Following treatment, a skin swab culture of the treatment shoulder will be taken, both the treatment shoulder and control shoulder will be sterilely prepped with 2% chlorhexidine gluconate solution with 70% isopropyl alcohol and allowed to dry for 3 minutes.
Following chlorhexidine preparation, a single set of cultures will be obtained from each shoulder.
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Gel treatment used to treat acne
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ACTIVE_COMPARATOR: Light and Gel
Prior to treatment, a skin swab culture will be taken, 5% topical benzoyl peroxide treatment will be performed on dry skin immediately after a shower as described in the above paragraph.
Again, five total treatments will be performed prior to research visit.
On the day of the research visit, the blue light therapy protocol described above will be performed exactly the same followed by culture obtainment.
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Blue light therapy treatment for acne
Gel treatment used to treat acne
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number of Participants With C. Acnes Bacterium Culture After Treatment
Time Frame: up to 2 days
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Swab will be taken from skin and cultured for approximately 7 days to determine bacteria growth.
This result is for the null condition following treatment with either blue light, blue light plus benzoyl peroxide or just benzoyl peroxide but before additional preparation with chlorhexidine.
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up to 2 days
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Median Colony Forming Units (CFU) After Treatment
Time Frame: up to 2 days
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Quantitative culture analysis between treatment groups after treatment to the shoulder but before chlorhexidine preparation (null condition).
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up to 2 days
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Percentage of Participants in Each Group With Positive C. Acnes Cultures
Time Frame: up to 2 days
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Comparison of positive Cutibacterium acnes cultures as a binary (yes/no) outcome between treatment arm and control arm following chlorhexidine (CHX) prep.
Reported is the percentage of people in each group that had Cutibacterium acnes growth.
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up to 2 days
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Median Colony Forming Units Per mL Treatment vs Control
Time Frame: up to 2 days
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Samples taken from treatment arm and control arm after chlorhexidine (CHX) preparation on both sides.
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up to 2 days
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Brian F Grogan, MD, University of Wisconsin, Madison
Publications and helpful links
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2020-0018
- A536110 (Other Identifier: UW Madison)
- SMPH/ORTHO&REHAB/ORTHO (Other Identifier: UW Madison)
- Protocol Version 9/14/2020 (OTHER: UW Madison)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
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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