A Study of Dapsone Gel in Females With Skin of Color and Acne Vulgaris

August 11, 2015 updated by: Allergan
This study will evaluate the effect of dapsone gel in female subjects with skin of color (Fitzpatrick Skin Types IV, V, and VI) with acne vulgaris.

Study Overview

Status

Status

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

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 (Actual)

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.
68

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.
  • Phase 4

Contacts and Locations

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

Study Locations

  • United States
    • District of Columbia
      • Washington, District of Columbia, United States

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • Diagnosis of acne vulgaris
  • Medium to dark complexion (Fitzpatrick Skin Type IV, V or VI)
  • Willing to avoid excessive or prolonged exposure of the face to ultraviolet light (eg, sunlight, tanning beds) throughout the study

Exclusion Criteria:

  • Received treatment with botulinum toxin of any serotype in the face within 6 months

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: Dapsone Gel
Dapsone Gel (Aczone®) applied twice daily to the face for 12 weeks.
Drug: Dapsone Gel
Dapsone Gel (Aczone®) applied twice daily to the face for 12 weeks.
Other Names:
  • Aczone®

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
Change From Baseline in the Global Assessment of Acne Severity (GAAS) Score by Physician
Time Frame: Baseline, Week 12
The investigator evaluated the participant's acne severity using the 5-point GAAS grading scale: 0= No evidence of facial acne vulgaris to 4= Significant degree of inflammatory disease; papules/pustules were a predominant feature; a few nodulo-cystic lesions could have been present; comedones (small pumps on the skin caused by acne) could have been present. A negative change from Baseline indicated improvement.
Baseline, Week 12

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
Change From Baseline in the GAAS
Time Frame: Baseline, Weeks 2 and 6
The investigator evaluated the participant's acne severity using the 5-point GAAS grading scale: 0= No evidence of facial acne vulgaris to 4= Significant degree of inflammatory disease; papules/pustules were a predominant feature; a few nodulo-cystic lesions could have been present; comedones (small pumps on the skin caused by acne) could have been present. A negative change from Baseline indicated improvement.
Baseline, Weeks 2 and 6
Percent Change From Baseline in Total Lesion Counts
Time Frame: Baseline, Weeks 2, 6 and 12
The investigator evaluated Inflammatory (papule, pustule and nodule/cyst) and Non-inflammatory (blackhead and whitehead) lesions. A papule is a small, red, solid elevation less than 1.0 cm in diameter, a pustule is a small, circumscribed elevation of the skin that contains yellow-white exudate and a nodule/cyst is a circumscribed, elevated, solid lesion generally more than 0.5 cm in diameter with palpable depth. The total lesion count was the sum of the inflammatory and non-inflammatory lesion counts. A negative percent change from baseline indicates a reduction in lesion counts (improvement).
Baseline, Weeks 2, 6 and 12
Percent Change From Baseline in Inflammatory Lesion Counts
Time Frame: Baseline, Weeks 2, 6 and 12
The investigator evaluated Inflammatory lesions (papule, pustule and nodule/cyst). A negative percent change from baseline indicates a reduction in lesion counts (improvement).
Baseline, Weeks 2, 6 and 12
Percent Change From Baseline in Non-Inflammatory Lesion Counts
Time Frame: Baseline, Weeks 2, 6 and 12
The investigator evaluated Non-inflammatory (blackhead and whitehead) lesions. A negative percent change from baseline indicates a reduction in lesion counts (improvement).
Baseline, Weeks 2, 6 and 12
Percentage of Participants With 0 (None) or 1 (Minimal) on the GAAS
Time Frame: Weeks 2, 6 and 12
The investigator evaluated the participant's acne severity using the 5-point GAAS grading scale: 0= No evidence of facial acne vulgaris to 4= Significant degree of inflammatory disease; papules/pustules were a predominant feature; a few nodulo-cystic lesions could have been present; comedones (small pumps on the skin caused by acne) could have been present. The percentage of participants with a score of 0=none or 1=minimal is reported.
Weeks 2, 6 and 12
Acne Symptom and Impact Scale (ASIS) Sign Domain Score
Time Frame: Weeks 2, 6 and 12
The participant assessed signs of acne vulgaris using the ASIS. The sign domain is a composite of 9 items of the 17 items on the overall scale. Each of the items is answered on a 5-point scale: 0 (best) to 4 (worst). The sign domain score is calculated as the average of the 9 items for a total possible score of 0 to 4. Higher scores indicate the presence of more severe signs of acne.
Weeks 2, 6 and 12
ASIS Impact Domain Score
Time Frame: Weeks 2, 6 and 12
The participant assessed the impact of acne vulgaris using the ASIS. The impact domain is a composite of 8 items assessing the psychosocial impacts (6 items emotional and 2 items social) of the 17 items on the overall scale. Each of the items is answered on a 5-point scale: 0 (best) to 4 (worst). The impact domain score is calculated as the average of the 8 items for a total possible score of 0 to 4. Higher scores on the ASIS Impact Domain indicate greater negative impact of acne on health-related quality of life and appearance.
Weeks 2, 6 and 12

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.
Allergan

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

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.
December 1, 2013

Primary Completion (Actual)

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.
June 1, 2014

Study Completion (Actual)

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.
September 1, 2014

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).
January 8, 2014

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.
January 8, 2014

First Posted (Estimate)

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.
January 10, 2014

Study Record Updates

Last Update Posted (Estimate)

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.
August 19, 2015

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.
August 11, 2015

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.
August 1, 2015

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.
  • GMA-ACZ-13-001

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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