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Dapsone Gel 5% and Tretinoin Gel 0.025% Versus Tretinoin Gel 0.025% Monotherapy for Facial Acne Vulgaris

This study has been completed.
Information provided by (Responsible Party):
Allergan Identifier:
First received: January 30, 2009
Last updated: September 22, 2011
Last verified: September 2011
A 12-week evaluation of the safety and efficacy of dapsone gel 5% when used with tretinoin gel 0.025% compared with tretinoin gel 0.025% monotherapy in treating moderate to severe facial acne vulgaris

Condition Intervention Phase
Acne Vulgaris
Drug: Dapsone; Tretinoin
Drug: Tretinoin
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single Blind (Investigator)
Primary Purpose: Treatment

Resource links provided by NLM:

Further study details as provided by Allergan:

Primary Outcome Measures:
  • Change From Baseline in Inflammatory Lesion Counts (Papules, Pustules and Nodules) at Week 12 [ Time Frame: Baseline, Week 12 ]
    Change from baseline in inflammatory lesion counts (papules, pustules and nodules) at week 12. Papules and nodules are round, solid elevations of the skin with no visible fluid; papules are smaller (less than 5 or 10 millimeters in width and depth) and nodules are larger (greater than 5 or 10 millimeters in width and depth). Pustules are small elevations of the skin containing cloudy material. A negative number change from baseline indicates a reduction in lesion counts (improvement).

Secondary Outcome Measures:
  • Change From Baseline in Investigator Global Assessment at Week 12 [ Time Frame: Baseline, Week 12 ]
    Change from baseline in the Investigator Global Assessment (IGA) at week 12. The IGA is a 5-point scale used by the investigator to assess overall acne severity, where 0 equals clear skin (no evidence of acne) and 4 equals severe acne. A negative number change from baseline indicates a reduction in acne severity (improvement).

  • Change From Baseline in Overall Disease Severity at Week 12 [ Time Frame: Baseline, Week 12 ]
    Change from baseline in overall disease severity at week 12. The overall disease severity was evaluated by the investigator using a 7-point scale to rate the overall acne severity (lesions, inflammation, facial redness and skin condition), where 0=no acne lesions and 6=most severe acne. A negative number change from baseline indicates a reduction in overall acne disease severity (improvement).

  • Change From Baseline in Non-Inflammatory Lesion Counts (Open and Closed Comedones) at Week 12 [ Time Frame: Baseline, Week 12 ]
    Change from baseline in non-inflammatory lesion counts (open/closed comedones) at week 12. Comedones are small bumps on the skin (lesions) caused by acne and found at the opening of a skin pore. Open comedones (also known as a blackheads) have a microscopic opening to the skin surface, while closed comedones (also known as whiteheads or "pimples") lack the opening to the skin. A negative number change from baseline indicates a reduction in lesion counts (improvement).

Enrollment: 163
Study Start Date: December 2008
Study Completion Date: August 2009
Primary Completion Date: August 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 1
Dapsone gel 5% and Tretinoin gel 0.025%
Drug: Dapsone; Tretinoin
Dapsone topical gel 5%, 1 pea-size amount BID x 12 weeks and Tretinoin gel 0.025%, 1 pea-size amount QD x 12 weeks
Other Name: Aczone Gel 5%; Tretin-X Gel 0.025%
Active Comparator: 2
Tretinoin gel 0.025%
Drug: Tretinoin
Tretinoin gel 0.025%, 1 pea-size amount QD x 12 weeks
Other Name: Tretin-X Gel 0.025%


Ages Eligible for Study:   12 Years and older   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Facial acne vulgaris characterized by the following:

    • 30-100 facial inflammatory lesions; and, 25-100 facial non-inflammatory lesions;
    • Stable disease, non-rapidly regressing facial acne vulgaris; and, less than or equal to 3 nodules and/or cysts (diameter greater than or equal to 1cm)
  • Female subjects of childbearing potential must have a negative pregnancy test at baseline and practice reliable method of contraception throughout the study

Exclusion Criteria:

  • Non-compliance with washout period;
  • History of clinically significant anemia or hemolysis;
  • Skin disease/disorder that might interfere with diagnosis or evaluation of acne vulgaris;
  • Allergy or sensitivity to any component of the test medications
  Contacts and Locations
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Please refer to this study by its identifier: NCT00835198

United States, Ohio
Strongsville, Ohio, United States
Sponsors and Collaborators
Study Director: Medical Director Allergan
  More Information

Responsible Party: Allergan Identifier: NCT00835198     History of Changes
Other Study ID Numbers: MA-ACZ0801
Study First Received: January 30, 2009
Results First Received: September 22, 2011
Last Updated: September 22, 2011

Additional relevant MeSH terms:
Acne Vulgaris
Acneiform Eruptions
Skin Diseases
Sebaceous Gland Diseases
Antineoplastic Agents
Keratolytic Agents
Dermatologic Agents
Anti-Infective Agents
Antiprotozoal Agents
Antiparasitic Agents
Folic Acid Antagonists
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Leprostatic Agents
Anti-Bacterial Agents processed this record on April 26, 2017