Acne VulgarisPhase 4NCT00964366
Study to Determine and Compare the Tolerance and Irritation Potential of Topical Acne Medications
A Phase 4 study testing clindamycin and benzoyl peroxide and Dapsone gel in people with Acne Vulgaris, run by Stiefel, a GSK Company at 1 site in United States.
Trial summary
This is a randomized, half-face study. On 1 side of the face, the subject will apply 1 of the 2 test products, clindamycin and benzoyl peroxide or dapsone gel and the contra lateral side of the face will remain non-treated to serve as a control. Read more about this study
- Who is it for?
- Ages 18 to 45 yearsHealthy volunteers can take part
- Conditions the study is for
- Acne Vulgaris
- What is being tested?
- clindamycin and benzoyl peroxide and Dapsone gel
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 53 participants
- Where
- 1 siteUnited States
- Study dates
- Jul 2009to Aug 2009
- Phase
- Phase 4
- 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 18 to 45 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Capable of understanding and willing to provide signed and dated written voluntary informed consent (and any local or national authorization requirements) before any protocol specific procedures are performed.
- Male and female subjects aged from 18 to 45 years at time of consent.
- Has a Fitzpatrick Skin Type of I, II, or III.
- Is willing to discontinue use of all facial products (other than the cleanser provided and makeup or razor and facial shave product) on the face for the 3 days before their baseline/day 0 visit and use only the provided facial products and their normal makeup or razor and facial shaving product for the duration of the study.
- Is willing to not change brands of makeup or razor and facial shave product during the study.
- Is willing to refrain from using any facial product on the face other than study products and their normal makeup or razor and facial shave product for the duration of the study.
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- Is willing to refrain from exercising prior to their instrument appointments.
- Is willing to refrain from showering or drinking caffeinated beverages within 1 hour prior to their instrument visits.
- Is willing to report to the site for each visit with a clean face and no makeup.
- Is willing to avoid sunburn, tanning, tanning beds or other excessive sun exposure. Understands that if their skin tone changes significantly during the study it will be necessary to discontinue their participation.
- Able to complete the study and to comply with study instructions.
- Sexually active females of childbearing potential participating in the study must agree to use a medically acceptable method of contraception while receiving protocol-assigned product. A woman of childbearing potential is defined as one who is biologically capable of becoming pregnant; including perimenopausal women who are less than 2 years from their last menses.
Who cannot join
- Female subjects who are pregnant, trying to become pregnant, or breast feeding.
- Male subjects that have facial beards (mustache and/or goatee is acceptable).
- Is a Type I diabetic.
- Has active or chronic skin allergies.
- Has a history of acute or chronic disease that might interfere with, or increase the risk of study participation.
- Has participated in other facial studies in the preceding 30 days or other clinical studies in preceding 14 days.
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- Had skin cancer treatment in preceding 12 months.
- Has damaged skin on facial areas (eg, from sunburn, tattoos, scars).
- Had any medical procedure (e.g., laser resurfacing, chemical peels, plastic surgery) to facial areas in preceding 12 months.
- Had any cosmetic procedure (e.g., microdermabrasion, etc.) to facial areas within 8 weeks of the baseline visit.
- Use of topical retinoids or related agents for the treatment of acne or photoaging in the preceding 6 months.
- Live in the same household as currently enrolled subjects.
- Employees of investigator/clinical research organization (CRO) or Stiefel Laboratories involved in the study, or an immediate family member (partner, offspring, parents, siblings or sibling's offspring) of an employee involved in the study.
- Any other condition or factor the investigator or his duly assigned representative believes may affect the skin response or the interpretation of the test results.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Two-week Study to Determine and Compare the Tolerance and Irritation Potential of Clindamycin and Benzoyl Peroxide to Dapsone Gel Topical Acne Medications
This is a randomized, half-face study. On 1 side of the face, the subject will apply 1 of the 2 test products, clindamycin and benzoyl peroxide or dapsone gel and the contra lateral side of the face will remain non-treated to serve as a control.
Read the detailed description
This is a single-blind (blinded expert grader), parallel group, randomized, half-face study being conducted at one clinical site. On 1 side of the face, the subject will apply 1 of the 2 test products, clindamycin and benzoyl peroxide or dapsone gel and the contra lateral side of the face will remain non-treated to serve as a control. Approximately 25-30 male and female healthy subjects without facial acne, aged 18 to 45, will be randomly assigned to each product.
The eligible subjects who qualify will be entered into a 2-week treatment phase. The first of application of the study medication will be supervised at the site, Monday through Friday of each week. Any additional applications should be applied by the subjects at home each evening and the times of application recorded on a diary card. Subjects will apply the study product at home on Saturdays and Sundays and record the times of application on a diary card.
A blinded expert grader will rate comparative product tolerance during the study before study product is applied.
Instrumentation measurements of TEWL will be utilized to evaluate product mildness.
Duplicate sebum samples will be taken from the left and right forehead areas and assessed.
Subject will complete questionnaires and all adverse events will be recorded.
- Conditions
- Acne Vulgaris
- Being tested
- clindamycin and benzoyl peroxide, Dapsone gel
- Medical subject headings
- Acne Vulgaris
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
clindamycin and benzoyl peroxideDrug
Also called Duac® gel
Daily applications, to the randomized side of the face either left or right, of clindamycin and benzoyl peroxide
Dapsone gelDrug
Also called ACZONE® (dapsone) Gel, 5%
Twice-daily applications of dapsone gel
| Study group | Role | What they receive |
|---|---|---|
| Clindamycin/BPO gel | Experimental | Once-daily applications of clindamycin/BPO gel to the randomized side of the face either left or right. Receives: Drug: clindamycin and benzoyl peroxide |
| Dapsone gel | Active comparator | Twice-daily applications of dapsone gel to one side of the face. Receives: Drug: Dapsone gel |
What is being measured
The primary outcome is the main question the study is designed to answer.
Skin Erythema (Redness)
Assessment of erythema as part of an evaluation of tolerance of two treatments: clindamycin and benzoyl peroxide or dapsone gel. This was done by visual assessment by an independent blinded grader using the grading scale shown below.
Grade Description 0 None 2 Mild erythema 4 Moderate confluent erythema 6 Marked erythema with some edema 8 Marked erythema, edema, possible erosion
Measured: 2 Weeks
Skin Dryness
The amount of dryness on the left and right cheek of each panelist.
The scale used to evaluate skin dryness is:
Grade Description 0 None 2 Slight flaking 4 Moderate flaking/scaling 6 Marked scaling / slight fissuring 8 Severe scaling, fissuring
Expert Grader assessments of dryness were taken prior to product application on Days 0, 1, 2, 3, 6, 7, 8, 9, 10, 13 and 14.
Measured: Baseline, Day 1through Day 14
Secondary outcomes (3)
Transepidermal Water Loss (TEWL)
To assess skin moisture and hydration using transepidermal water loss (TEWL). These tables record the data obtained for each panelist at Baseline, and on Days 3, 7 and 14 or upon early termination of site(s), if applicable. Results are measured on a continuous scale.
Measured: 2 Weeks
Sebum Measurements
To sample the skin surface, the sebum collector strips are applied to the skin sites for 10 seconds. Once removed, these samples will be immediately measured for the amount of sebum on the strip using the tape analyzer. The amount of sebum production was measured as the amount of sebum collected on a tape applied to the skin for 10 seconds and then converted to 1 of 10 incremental levels. Sebum production was measured in increments of 0 (minimum value) to 10 (maximum value). The higher the number, the greater amount of sebum produced.
Measured: 2 weeks
Skin Hydration
Evaluation of Skin Hydration using electrical conductance measurements,on weekdays during 14 days of treatment. The value recorded which is expressed in units of microsiemens represents the AC conductance 2-3 seconds after placing the spring-loaded probe tip to the sample site.
Measured: 2 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted24 Aug 2009 (estimated)
- Study startJul 2009
- Primary completionAug 2009
- Study completionAug 2009
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Acne VulgarisStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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 4
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 53 participants (actual)
Sponsor and investigators
- Lead sponsor
- Stiefel, a GSK Company
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- GlaxoSmithKline
- Responsible party
- Sponsor
- Investigators
- GSK Clinical Trials, Study director, GlaxoSmithKline
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00964366
- Sponsor's protocol ID
- 114545
- Other IDs
- C0000-408
- Status last verified
- May 2017
- First submitted
- 20 Aug 2009
- Last updated
- 30 May 2017
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 30 May 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Two-week Study to Determine and Compare the Tolerance and Irritation Potential of Clindamycin and Benzoyl Peroxide to Dapsone Gel Topical Acne Medications
- ClinicalTrials.gov ID
- NCT00964366
- Acronym / sponsor ID
- 114545
- Conditions
- Acne Vulgaris
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 53 participants (actual)
- Lead sponsor
- Stiefel, a GSK CompanyIndustry (pharma, biotech, devices)
- Collaborators
- GlaxoSmithKline
- Study start
- Jul 2009
- Primary completion
- Aug 2009 (actual)
- Study completion
- Aug 2009 (actual)
- First posted
- 24 Aug 2009 (estimated)
- Results
- Posted 3 Apr 2012
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is a randomized, half-face study. On 1 side of the face, the subject will apply 1 of the 2 test products, clindamycin and benzoyl peroxide or dapsone gel and the contra lateral side of the face will remain non-treated to serve as a control.
Detailed description
This is a single-blind (blinded expert grader), parallel group, randomized, half-face study being conducted at one clinical site. On 1 side of the face, the subject will apply 1 of the 2 test products, clindamycin and benzoyl peroxide or dapsone gel and the contra lateral side of the face will remain non-treated to serve as a control. Approximately 25-30 male and female healthy subjects without facial acne, aged 18 to 45, will be randomly assigned to each product.
The eligible subjects who qualify will be entered into a 2-week treatment phase. The first of application of the study medication will be supervised at the site, Monday through Friday of each week. Any additional applications should be applied by the subjects at home each evening and the times of application recorded on a diary card. Subjects will apply the study product at home on Saturdays and Sundays and record the times of application on a diary card.
A blinded expert grader will rate comparative product tolerance during the study before study product is applied.
Instrumentation measurements of TEWL will be utilized to evaluate product mildness.
Duplicate sebum samples will be taken from the left and right forehead areas and assessed.
Subject will complete questionnaires and all adverse events will be recorded.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Clindamycin/BPO gel | Experimental | Drug: clindamycin and benzoyl peroxideOnce-daily applications of clindamycin/BPO gel to the randomized side of the face either left or right. |
| Dapsone gel | Active comparator | Drug: Dapsone gelTwice-daily applications of dapsone gel to one side of the face. |
Who may qualify
- Ages
- 18 to 45 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (12 listed)
- Capable of understanding and willing to provide signed and dated written voluntary informed consent (and any local or national authorization requirements) before any protocol specific procedures are performed.
- Male and female subjects aged from 18 to 45 years at time of consent.
- Has a Fitzpatrick Skin Type of I, II, or III.
- Is willing to discontinue use of all facial products (other than the cleanser provided and makeup or razor and facial shave product) on the face for the 3 days before their baseline/day 0 visit and use only the provided facial products and their normal makeup or razor and facial shaving product for the duration of the study.
- Is willing to not change brands of makeup or razor and facial shave product during the study.
Key exclusion criteria (14 listed)
- Female subjects who are pregnant, trying to become pregnant, or breast feeding.
- Male subjects that have facial beards (mustache and/or goatee is acceptable).
- Is a Type I diabetic.
- Has active or chronic skin allergies.
- Has a history of acute or chronic disease that might interfere with, or increase the risk of study participation.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| clindamycin and benzoyl peroxideAlso: Duac® gelDaily applications, to the randomized side of the face either left or right, of clindamycin and benzoyl peroxide | Drug | Clindamycin/BPO gel |
| Dapsone gelAlso: ACZONE® (dapsone) Gel, 5%Twice-daily applications of dapsone gel | Drug | Dapsone gel |
Primary outcome
Skin Erythema (Redness)
Time frame: 2 Weeks
Assessment of erythema as part of an evaluation of tolerance of two treatments: clindamycin and benzoyl peroxide or dapsone gel. This was done by visual assessment by an independent blinded grader using the grading scale shown below. Grade Description 0 None 2 Mild erythema 4 Moderate confluent erythema 6 Marked erythema with some edema 8 Marked erythema, edema, possible erosion
Skin Dryness
Time frame: Baseline, Day 1through Day 14
The amount of dryness on the left and right cheek of each panelist. The scale used to evaluate skin dryness is: Grade Description 0 None 2 Slight flaking 4 Moderate flaking/scaling 6 Marked scaling / slight fissuring 8 Severe scaling, fissuring Expert Grader assessments of dryness were taken prior to product application on Days 0, 1, 2, 3, 6, 7, 8, 9, 10, 13 and 14.
3 secondary outcomes
Transepidermal Water Loss (TEWL)
Time frame: 2 Weeks
Sebum Measurements
Time frame: 2 weeks
Skin Hydration
Time frame: 2 weeks
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 30 May 2017.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
GSK Clinical Trials study director
GlaxoSmithKline
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing clindamycin and benzoyl peroxide and Dapsone gel in people with Acne Vulgaris, run by Stiefel, a GSK Company 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 12 inclusion and 14 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 30 May 2017. 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. 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 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
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 3 Apr 2012). 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?
Skin Erythema (Redness) (time frame: 2 Weeks). 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?
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 30 May 2017; AzTrials last refreshed its copy on 1 Nov 2026.