A Study Comparing Adapalene Gel 0.1% and to Differin Gel in the Treatment of Acne Vulgaris

Study Overview
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Brief Summary
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To demonstrate therapeutic equivalence and safety of adapalene gel 0.1% (Taro Pharmaceuticals U.S.A., Inc.) and Differin® Gel (Adapalene Gel 0.1%, Galderma) in the treatment of acne vulgaris.

Detailed Description
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A multi-center, double-blind, randomized, placebo controlled, parallel-group study, Adapalene Gel 0.1% (Taro Pharmaceuticals U.S.A, Inc.) and to Differin® Gel (Adapalene 0.1%, Galderma) and both active treatments to a placebo control in the treatment of acne vulgaris

Official Title
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A Double-blind, Randomized, Placebo Controlled Study to Compare Adapalene Gel 0.1% to Differin Gel and Both Active Treatments to a Placebo Control in the Treatment of Acne Vulgaris

Conditions
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Acne Vulgaris

Intervention / Treatment
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* Drug: Adapalene Gel 0.1%
* Drug: Placebo Control
* Drug: Differin® Gel (Adapalene 0.1%, Galderma)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Healthy male or non pregnant female aged ≥ 12 and ≤ 40 years with a clinical diagnosis of acne vulgaris. Subjects who are 18 years of age or older (up to the age of 40) must have provided IRB approved written informed consent. Subjects ages 12 to 17 years of age inclusive must have provided IRB approved written assent; Subjects must have a definite clinical diagnosis of acne vulgaris of severity grade 2, 3, or 4 as per the Investigator's Global Assessment (IGA) Exclusion Criteria: Female Subjects who are pregnant, nursing or planning to become pregnant during study participation Subjects with a history of hypersensitivity or allergy to tretinoin, retinoids, or any of the study medication ingredients. Subjects with the presence of any skin condition that would interfere with the diagnosis or assessment of acne vulgaris (e.g., on the face: rosacea, dermatitis, psoriasis, squamous cell carcinoma, eczema, acneiform eruptions caused by medications, steroid acne, steroid folliculitis, or bacterial folliculitis).

Ages Eligible for Study
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Minimum Age: 12 Years
Maximum Age: 40 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Adapalene gel 0.1%<br>The study medication will be self-applied topically, on the affected areas of the face lightly, once daily at bedtime, avoiding contact with the mouth, eyes, and other mucous membranes for 84 consecutive days. | Drug: Adapalene Gel 0.1%<br>* The study medication will be self-applied topically on the affected areas of the face lightly, once daily at bedtime, avoiding contact with the mouth, eyes, and other mucous membranes for 84 consecutive days.<br>* Other names: Test Product;|
| Active Comparator: Differin® Gel (Adapalene 0.1%, Galderma)<br>The study medication will be self-applied topically, on the affected areas of the face lightly, once daily at bedtime, avoiding contact with the mouth, eyes, and other mucous membranes for 84 consecutive days. | Drug: Differin® Gel (Adapalene 0.1%, Galderma)<br>* The study medication will be self-applied topically on the affected areas of the face lightly, once daily at bedtime, avoiding contact with the mouth, eyes, and other mucous membranes for 84 consecutive days.<br>* Other names: Reference Product;|
| Placebo Comparator: Placebo Control<br>The study medication will be self-applied topically, on the affected areas of the face lightly, once daily at bedtime, avoiding contact with the mouth, eyes, and other mucous membranes for 84 consecutive days. | Drug: Placebo Control<br>* The study medication will be self-applied topically on the affected areas of the face lightly, once daily at bedtime, avoiding contact with the mouth, eyes, and other mucous membranes for 84 consecutive days.<br>* Other names: Vehicle;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The percentage change in the inflammatory and non-inflammatory lesion counts | Demonstration of Therapeutic Equivalence | Baseline to Week 12 |