Actinic KeratosesPhase 3NCT00175643
Safety and Efficacy of Imiquimod Applied in Dose-Cycle for Actinic Keratoses
A Phase 3 study testing imiquimod in people with Actinic Keratoses, run by University of British Columbia at 1 site in Canada.
Trial summary
It is believed that imiquimod 5% cream has the potential to be an effective treatment for actinic keratoses. The purpose of this study is to evaluate the duration of the effect of topical imiquimod 5% topical cream for the treatment of actinic keratoses. Read more about this study
- Who is it for?
- Ages 18 to 75 yearsHealthy volunteers can take part
- Conditions the study is for
- Actinic Keratoses
- What is being tested?
- imiquimod
- How many people
- 20 participants
- Where
- 1 siteCanada
- Study dates
- Feb 2005to Nov 2005
- Phase
- Phase 3
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 75 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- At least 18 years of age.
- Have a total of 4 to 8 clinically typical, discrete, non-hyperkeratotic, non-hypertrophic AK lesions located within a contiguous 25 cm2 treatment area (balding scalp or face, but not both).
- Free of any significant findings (e.g. tattoos) in the potential application site area that may impair examination of treatment or surrounding area.
- Willing to eliminate tanning bed/sun parlor use for duration of study.
Who cannot join
- Evidence of clinically significant, unstable cardiovascular or immunosuppressive, hematologic, hepatic, neurologic, renal, endocrine, collagen-vascular, or gastrointestinal abnormalities or disease.
- Any dermatological disease and or condition in the treatment or surrounding area that may be exacerbated by treatment with imiquimod or cause difficulty with examination (e.g. rosacea, psoriasis, atopic dermatitis, eczema).
- Confirmed SCC, BCC anywhere on the head.
- Share a household where there is a person participating in a concurrent clinical study of imiquimod or being treated with imiquimod 5% topical cream.
- Active chemical dependency or alcoholism, as assessed by investigator.
- Females who are pregnant, breast-feeding or considering becoming pregnant while on the study.
- Females with childbearing unwilling to practice an effective method of contraception, as defined by the investigator for the duration of the study as well as one month after completion.
- Received any treatment, products or procedures within the designated time period prior to the prestudy visit as listed on page 4 of the protocol (Version 03 dd March 2003).
Trial locations and contacts
1 site in 1 country.
Canada1 site
Clinical Trials Unit, Skin Care Centre, UBC Dermatology
Vancouver, British Columbia, V5Z 4E8
About this study
Official title: Open-Label Study to Assess Safety and Efficacy of Imiquimod 5% Cream Applied 3 Days Per Week in 1 or 2 Cycles for Treatment of Actinic Keratoses on the Head
It is believed that imiquimod 5% cream has the potential to be an effective treatment for actinic keratoses. The purpose of this study is to evaluate the duration of the effect of topical imiquimod 5% topical cream for the treatment of actinic keratoses.
Read the detailed description
This study will assess the safety and efficacy of imiquimod 5% cream applied to actinic keratoses on the head to reduce the size of lesions. The objective is to analyze the effect of dose cycling with respect to the complete clearance rate when imiquimod 5% cream is applied 3 times per week for 4 weeks in 1 or 2 cycles. The complete clearance rate is defined as the proportion of subjects with no clinically visible AK lesions in the treatment area at the end of cycle 1 or the end of cycle 2.
- Conditions
- Actinic Keratoses
- Being tested
- imiquimod
- Keywords
- actinic keratoses, imiquimod, pre-malignant, squamous cell carcinoma, immunosuppression
- Medical subject headings
- Keratosis, Actinic, Precancerous Conditions, Carcinoma, Squamous Cell
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
imiquimodDrug
What is being measured
The primary outcome is the main question the study is designed to answer.
Complete clearance rate - defined as the proportion of subjects at the end of cycle 1 or cycle 2 with no (zero) clinically visible AK lesions in the treatment area.
Secondary outcomes (2)
Partial clearance rate - defined as the proportion of subjects at the end of cycle 2 with at least 75% reduction from the number of AK lesions counted at baseline in the treatment area
Sustained clearance rate at week 8 post-treatment.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 Sep 2005 (estimated)
- Study startFeb 2005
- Study completionNov 2005
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Actinic KeratosesStudies of the same condition, open and under way.
- More trials run by University of British ColumbiaThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 20 participants
Sponsor and investigators
- Lead sponsor
- University of British Columbia
- Sponsor type
- University, hospital or other
- Collaborators
- Vancouver Coastal Health Research Institute, 3M
- Investigators
- Jason K Rivers, M.D., Principal investigator, Division of Dermatology, University of British Columbia
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00175643
- Sponsor's protocol ID
- AK-IMIQUIMOD CYCLING
- Status last verified
- May 2006
- First submitted
- 11 Sep 2005
- Last updated
- 9 May 2006
- Results posted
- No
Publications
(1.) Somani N, Rivers JK. Imiquimod 5% cream for the treatment of actinic keratoses. Skin Therapy Lett 2005;10(2):1-6. (2.) Rivers JK. Topical 3% diclofenac in 2.5% hyaluronan gel for the treatment of actinic keratoses. Skin Therapy Lett 2004;9(1):1-3. (3.) Rivers JK, Arlette J, Shear N, Guenther L, Carey W, Poulin Y. Topical treatment of actinic keratoses with 3.0% diclofenac in 2.5% hyaluronan gel. Br J Dermatol 2002;146 (4.) Rivers JK, McLean DI. An open study to assess the efficacy and safety of topical 3% diclofenac in a 2.5% hyaluronic acid gel for the treatment of actinic keratoses. Arch Dermatol 1997;133(10):1239-42.