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Open-Label Safety Study to Evaluate Imiquimod Cream, 5% for Large Areas of Actinic Keratosis

This study has been completed.
Information provided by:
Graceway Pharmaceuticals, LLC Identifier:
First received: June 30, 2005
Last updated: July 14, 2010
Last verified: July 2010
Actinic keratosis (AK) is a skin condition that shows up on skin routinely exposed to the sun, such as the face, scalp, shoulders, chest, back, arms, and hands. The purpose of this study is to evaluate the safety of one, two, or three cycles of imiquimod for the treatment of AK. The AK lesions treated can be in adjacent and nonadjacent areas of the head, torso, and extremities. The total surface area for the AK lesions must be greater than 25 cm2. The secondary objective is to evaluate the effectiveness of treatment with imiquimod in people with large surface areas of AK.

Condition Intervention Phase
Drug: imiquimod cream
Phase 4

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Open-Label Safety and Pharmacokinetic Study of AldaraTM (Imiquimod) Cream, 5% for One, Two, or Three Treatment Cycles to Surface Areas Greater Than 25 cm2 With Actinic Keratosis

Resource links provided by NLM:

Further study details as provided by Graceway Pharmaceuticals, LLC:

Primary Outcome Measures:
  • Number of Participants Who Experienced an Adverse Event [ Time Frame: from first dose up to 18 months ]
    Adverse events that occurred between the first day of exposure to the study cream and study discharge were summarized. Adverse events - any untoward medical occurrence in a subject that is temporally related to protocol procedures, including the administration of a pharmaceutical product at any dose, but which does not necessarily have a causal relationship with the treatment.

Secondary Outcome Measures:
  • Percent Reduction From Baseline to the Final Follow-up in Total Actinic Keratosis Lesion Count [ Time Frame: At Month 18 ]
    Percent reduction = (total baseline AK lesion count - total final lesion count)x100/ total baseline AK lesion count

Enrollment: 551
Study Start Date: June 2005
Study Completion Date: May 2007
Primary Completion Date: May 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Aldara 5%
Aldara® (imiquimod) cream, 5% supplied in 250 mg single-use packets.
Drug: imiquimod cream
imiquimod 5% cream applied in doses ranging from one packet (12.5 mg) to 6 packets (75 mg) to either single or multiple body regions for up to 3 cycles
Other Name: Aldara® (imiquimod) cream 5%

Detailed Description:

This was a Phase 4, open-label, single-arm, multicenter study in male and female subjects aged 18 years or older with clinically diagnosed AK lesions, conducted at 31 investigational sites in the United States.

This study assessed the safety of imiquimod as a treatment for AK applied in doses ranging from one packet 12.5 mg) to 6 packets (75 mg) to either single or multiple body regions for up to 3 cycles, depending upon treatment success and AK lesion recurrence. Eligible subjects applied imiquimod 5% cream prior to normal sleeping hours 2 days per week to at least 4 clinically typical, visible, discrete, nonhypertrophic AK lesions in contiguous or noncontiguous treatment areas totaling greater than 25 cm2 at baseline. Multiple treatment areas could be exposed (i.e., head, torso and/or extremities), with the number of packets determined by the investigator but not to exceed one packet for each 25 cm2 treatment area, up to a maximum of 6 packets per dose. In each treatment cycle, dosing was to continue for 16 weeks (approximately 4 months), as instructed by the investigator, followed by a 2-month, treatment-free follow-up period.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Are at least 18 years of age.
  • Have greater than 25 cm2 total treatment area(s) containing at least 4 actinic keratosis lesions.

Exclusion Criteria:

  • Have any skin condition in the treatment area that may be made worse by treatment with imiquimod (e.g., rosacea, psoriasis, atopic dermatitis, eczema).
  • Have received specific treatments/medications in the treatment area(s) within the designated time period prior to study treatment initiation.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00116649

  Show 32 Study Locations
Sponsors and Collaborators
Graceway Pharmaceuticals, LLC
Study Director: Sharon Levy, MD Graceway Pharmaceuticals
  More Information

Responsible Party: Sharon Levy, MD VP Product Development, Graceway Pharmaceuticals Identifier: NCT00116649     History of Changes
Other Study ID Numbers: 1520-IMIQ
Study First Received: June 30, 2005
Results First Received: October 21, 2008
Last Updated: July 14, 2010

Keywords provided by Graceway Pharmaceuticals, LLC:
actinic keratosis lesions large head torso extremities
actinic keratosis

Additional relevant MeSH terms:
Keratosis, Actinic
Skin Diseases
Precancerous Conditions
Adjuvants, Immunologic
Immunologic Factors
Physiological Effects of Drugs
Antineoplastic Agents
Interferon Inducers processed this record on April 28, 2017