Comparison of Duac® Gel And Differin® Gel in Mild to Moderate Acne Vulgaris

Multi-Centre, Single-Blind, Parallel Group, Clinical Evaluation of the Efficacy and Safety of Duac® Gel And Differin® Gel in the Topical Treatment of Mild to Moderate Acne Vulgaris

Comparing the efficacy and safety of a gel formulation containing a combination of clindamycin phosphate (equivalent to 1% clindamycin) and benzoyl peroxide (5%) once daily with a gel containing 0.1% adapalene once daily in the treatment of acne vulgaris of mild to moderate severity.

Study Overview

• Status: Completed
• Conditions: Acne Vulgaris
• Intervention / Treatment: Drug: Duac® Gel / Differin® Gel

Detailed Description

Title: A Multi-Centre, Single-Blind, Parallel Group, Clinical Evaluation of the Efficacy and Safety of Duac® Gel (a Gel Containing Clindamycin Phosphate [Equivalent to 1% Clindamycin] and 5% Benzoyl Peroxide) And Differin® Gel (a Gel Containing 0.1% Adapalene) in the Topical Treatment of Mild to Moderate Acne Vulgaris

Objectives: To compare the efficacy and safety of a gel formulation containing a combination of clindamycin phosphate (equivalent to 1% clindamycin) and benzoyl peroxide (5%) once daily with a gel containing 0.1% adapalene once daily in the treatment of acne vulgaris of mild to moderate severity.

Study methodology: Randomised, comparator-controlled, single-blind trial. The Investigators/ Assessors will be blinded to the treatment received.

Study population: Male and female patients, aged 12-39, with mild to moderate acne vulgaris.

• Study Type: Interventional
• Enrollment (Actual): 130
• Phase: Phase 4

Contacts and Locations

Study Locations

• Poland
  • Warsaw, Poland, 00710
    • Prof A Langner
• United Kingdom
  • Leeds, United Kingdom, LS1 3EX
    • Dr V Goulden
  • London, United Kingdom, W12 0NN
    • Dr A Chu

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 8 years to 35 years (Child, Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. Patients with mild to moderate acne vulgaris of the face with at least 15 inflammatory lesions and/or non-inflammatory lesions, but no more than three nodulocystic lesions and an acne grade of greater than 2.0 and less than 7.0 (The Leeds Revised Acne Grading System7).
2. Patients of either sex aged between 12 and 39 years, inclusive.
3. Patients who are willing and able to provide written informed consent, after being informed of all the pertinent aspects of the trial. In the case of patients aged under 16 years of age, parental or guardian consent must be obtained in addition to patient assent.
4. Patients agreeing not to use sun-beds or undergo any UV light treatment for 4 weeks prior to entering the study and to minimise the amount of exposure to direct sunlight for the duration of the study.
5. Patients agreeing to minimise their alcohol consumption throughout the study, with a limit of 14 units per week.

Exclusion Criteria:

1. Female patients who are pregnant, breast-feeding, or sexually active and not using reliable contraception and/or not prepared to do so for the duration of the trial (a negative pregnancy test must be confirmed at Visit 1 and at the end of the study, for all females if menarche has occurred).
2. Patients using anti-androgen containing contraceptives.
3. Patients who, during the past month, have received oral or topical steroids, oral or topical antibiotics, or acne treatment of any type, including natural or artificial UV therapy.
4. Patients who have a history of hypersensitivity or idiosyncratic reaction to clindamycin phosphate, benzoyl peroxide, adapalene or any components of the study medications.
5. Patients using, or having used in the past month, any significant concomitant medication which might affect their acne, as judged by the Investigator.
6. Patients with severe systemic diseases (e.g., severely impaired renal or liver function, severe cardiovascular, neurological disease, or any other diseases that may interfere with the evaluation of the study medications). This also applies to patients with psoriasis, acne rosacea, allergic rashes, bacterial, viral or fungal infections of the facial skin, or other diseases of the facial skin.
7. Patients with a history of regional enteritis or ulcerative colitis, or a history of antibiotic-associated colitis.
8. Patients who have a history of photosensitivity.
9. Patients who are unreliable or unlikely to be available for the duration of the follow-up.
10. Patients who have participated in a clinical trial involving a drug within 30 days of recruitment into the study (or are likely to do so at any time during their participation).
11. Patients who are either an immediate family member, or a colleague, of study personnel.
12. Patients who already have a member of their household entered onto this trial.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Percentage change from baseline of inflammatory lesion counts at week 2

Secondary Outcome Measures

Outcome Measure
Absolute change from baseline of inflammatory lesion counts at week 2.
Absolute change and percentage change from baseline of inflammatory lesion counts at weeks 1, 4, 8 and 12.
Absolute change and percentage change from baseline of non-inflammatory lesion counts and total lesion counts at weeks 1, 2, 4, 8 and 12.
Also, acne grade and global change score at weeks 1, 2, 4, 8 and 12 will be investigated.
Patient's self-rating assessment at weeks 1, 2, 4, 8 and 12.

Collaborators and Investigators

• Sponsor: Stiefel, a GSK Company
• Collaborators: GlaxoSmithKline
• Investigators: Principal Investigator: A Chu, MB BS, FRCP, Hammersmith Hospital, London; Principal Investigator: A Langner, MD, DSc, Iwolang spoo, Warsaw

Study record dates

Study Major Dates

• Study Start: December 1, 2004
• Primary Completion (Actual): August 1, 2005
• Study Completion (Actual): August 1, 2005

Study Registration Dates

• First Submitted: September 9, 2005
• First Submitted That Met QC Criteria: September 9, 2005
• First Posted (Estimate): September 12, 2005

Study Record Updates

• Last Update Posted (Actual): May 30, 2017
• Last Update Submitted That Met QC Criteria: May 24, 2017
• Last Verified: May 1, 2017

More Information

Terms related to this study

• Keywords: Mild to Moderate
• Additional Relevant MeSH Terms: Skin Diseases; Acneiform Eruptions; Sebaceous Gland Diseases; Acne Vulgaris; Physiological Effects of Drugs; Peripheral Nervous System Agents; Analgesics; Sensory System Agents; Anti-Inflammatory Agents, Non-Steroidal; Analgesics, Non-Narcotic; Anti-Inflammatory Agents; Antirheumatic Agents; Dermatologic Agents; Adapalene
• Other Study ID Numbers: S194-INT-04