A Multicenter, Randomized, Double-Blind, Vehicle-Controlled, Parallel Group Comparison Study to Determine the Therapeutic Equivalence of Generic Imiquimod Cream, 2.5% and Zyclara® (Imiquimod) Cream, 2.5% in Subjects With Actinic Keratoses
Overview
- Phase
- Phase 3
- Intervention
- Imiquimod
- Conditions
- Actinic Keratosis
- Sponsor
- Actavis Inc.
- Enrollment
- 467
- Locations
- 27
- Primary Endpoint
- Complete Clearance Rate - Percentage of Participants With Treatment Success: Per-Protocol (PP) Population
- Status
- Completed
- Last Updated
- 6 years ago
Overview
Brief Summary
The purpose of this study it so compare the safety and efficacy profiles of a generic imiquimod 2.5% cream to the reference listed Zyclara® (imiquimod) cream in the treatment of actinic keratosis (AK).
Detailed Description
Aldara® (imiquimod) Cream, 5% was the first imiquimod product approved by the Food and Drug Administration (FDA) for the topical treatment of AK, superficial basal cell carcinoma and external genital and perianal warts. The FDA approved regimen for the treatment of AK is application of 250 milligrams (mg) of cream twice a week for 16 weeks to a 25 square centimeters (cm\^2) area. In 2011, a lower strength imiquimod cream, Zyclara (imiquimod) Cream, 2.5% was approved by the FDA. When used for the treatment of AK, Zyclara is applied for a shorter duration and in an expanded treatment area (for example, face or scalp) in comparison to Aldara®. This study will be conducted in compliance with the protocol, Good Clinical Practice (GCP) and the applicable regulatory requirement(s). Marketed by Medicis, Zyclara® (imiquimod) cream 2.5% is a safe and effective topical therapy for the treatment of AK of the face and scalp. Actavis has developed a generic formulation of imiquimod 2.5% cream and the current study is designed to evaluate the safety and efficacy of this formulation.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Participant is a male or female, 18 years of age or older.
- •Participant has provided written informed consent.
- •Participant is willing and able to apply the test article as directed, comply with study instructions and commit to all follow-up visits for the duration of the study.
- •Participant has a clinical diagnosis of AK with at least 5 and no more than 20 clinically typical, visible or palpable AK lesions, each at least 4 millimeters (mm) in diameter, in an area greater than 25 cm\^2 on the face (excluding ears) or balding scalp, but not both.
- •Participant is in good general health and free of any disease state or physical condition that might impair evaluation of AK lesions or which, in the investigator's opinion, exposes the participant to an unacceptable risk by study participation.
- •Females must be post-menopausal, surgically sterile or use an effective method of birth control, with a negative urine pregnancy test (UPT) at the Baseline visit.
Exclusion Criteria
- •Participant is pregnant, lactating, or is planning to become pregnant during the study.
- •Participant has hyperkeratotic, hypertrophic or atypical AKs (for example, AK greater than \[\>\] 1 cm\^2 in size) in the treatment area.
- •Participant is currently enrolled in an investigational drug or device study.
- •Participant plans to be exposed to artificial tanning devices or excessive sunlight during the trial.
- •Participant is immunosuppressed (for example; human immunodeficiency virus \[HIV\], systemic malignancy, graft vs. host disease, etc.).
- •Participant has experienced an unsuccessful outcome from previous imiquimod therapy (an unsuccessful outcome is defined as after a reasonable therapeutic trial with no compliance issues and the topical drug do not work).
- •Participant has used an investigational drug or investigational device within 30 days prior to the Baseline visit.
- •Participant has had dermatologic procedures or surgeries such as: laser resurfacing, PUVA (Psoralen + ultraviolet A) therapy, UVB therapy, chemical peels or dermabrasion on the face or balding scalp within 6 months prior to the Baseline visit.
- •Participant has cryodestruction or chemodestruction, curettage, photodynamic therapy, surgical excision or other treatments for AK on the designated treatment area (face or scalp) within 1 month prior to the Baseline visit.
- •Participant has used oral corticosteroid therapy, interferon, cytotoxic drugs, immunomodulators, immunosuppressive therapies or retinoids within 1 month prior to the Baseline visit.
Arms & Interventions
Generic Imiquimod Cream 2.5%
Generic imiquimod cream 2.5% will be applied once daily approximately 1 to 2 hours before bedtime to the skin of the treatment area (either full face \[excluding the ears\] or balding scalp) for two, 2-week treatment cycles separated by a 2-week no-treatment period. Participants will apply test article for 14 consecutive days for each treatment cycle.
Intervention: Imiquimod
Zyclara® (Imiquimod) Cream 2.5%
Zyclara® (imiquimod) cream 2.5% will be applied once daily approximately 1 to 2 hours before bedtime to the skin of the treatment area (either full face \[excluding the ears\] or balding scalp) for two, 2-week treatment cycles separated by a 2-week no-treatment period. Participants will apply test article for 14 consecutive days for each treatment cycle.
Intervention: Zyclara®
Vehicle Cream
Vehicle cream will be applied once daily approximately 1 to 2 hours before bedtime to the skin of the treatment area (either full face \[excluding the ears\] or balding scalp) for two, 2-week treatment cycles separated by a 2-week no-treatment period. Participants will apply test article for 14 consecutive days for each treatment cycle.
Intervention: Vehicle Cream
Outcomes
Primary Outcomes
Complete Clearance Rate - Percentage of Participants With Treatment Success: Per-Protocol (PP) Population
Time Frame: Week 14
Complete clearance rate (treatment success) was defined as the percentage of participants in each treatment group with a count of zero actinic keratosis (AK) lesions in the treatment area at Week 14. All AKs (baseline and new lesions) independent of size within the treatment area were included in the efficacy lesion count. The AK clearance rate for a participant was calculated as follows: {1 - \[ (number of AK lesions at Week 14) / (number of AK lesions at Baseline)\]} \* 100.
Complete Clearance Rate - Percentage of Participants With Treatment Success: ITT Population
Time Frame: Week 14
Complete clearance rate (treatment success) was defined as the percentage of participants in each treatment group with a count of zero AK lesions in the treatment area at Week 14. All AKs (baseline and new lesions) independent of size within the treatment area were included in the efficacy lesion count. The AK clearance rate for a participant was calculated as follows: {1 - \[ (number of AK lesions at Week 14) / (number of AK lesions at Baseline)\]} \* 100.
Secondary Outcomes
- Number of Participants With Adverse Events (AEs)(Baseline (Day 1) up to Week 14)
- Number of Participants With Local Skin Reactions(Baseline (Day 1) up to Week 14)