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Effects of PRK 124 Lotion in Acne Rosacea

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00580723
First Posted: December 27, 2007
Last Update Posted: January 17, 2014
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Collaborator:
SenetekPLC
Information provided by (Responsible Party):
Christopher Zachary, University of California, Irvine
  Purpose
The purpose of this open-label study is to determine the tolerance and efficacy of twice-daily application of PRK 124 (Pyratine-6)(0.125%) moisturizing lotion for improving the signs and symptoms of mild to moderate facial rosacea.

Condition Intervention Phase
Acne Rosacea Other: PRK 124 Phase 1 Phase 2

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Effects of PRK 124 (0.125%) Lotion in Acne Rosacea

Resource links provided by NLM:


Further study details as provided by Christopher Zachary, University of California, Irvine:

Primary Outcome Measures:
  • Erythema Severity [ Time Frame: Baseline, Weeks 1, 4, 8, 12, 24, 36, 48 ]
    Measured by percent improvement on a scale of 0-4. Subjects received a 0 for no improvement, 1 for less than twenty-five percent improvement, a 2 for twenty-five to fifty percent improvement, a 3 for fifty to seventy-five percent improvement and a 4 for greater than seventy-five percent improvement. Mean scores from all continuing 16 participants were averaged for each encounter, for a total of 8 visits. The percent improvement in mean erythema severity was calculated by comparing the change in mean scores at week 48 to mean scores assessed at baseline.

  • Inflammatory Lesion Count [ Time Frame: Baseline, Weeks 1, 4, 8, 12, 24, 36, 48 ]
    Lesion counts were numerically summed for each patient at each encounter, and the average lesion count was calculated from all continuing 16 subjects at each visit, for a total of 8 visits. Percent improvement (reduction in lesion number) was assessed by comparing the average number of lesions at week 48 to the average number of lesions assessed at baseline.

  • Telangiectasia Severity [ Time Frame: Baseline, Weeks 1, 4, 8, 12, 24, 36, 48 ]
    Measured by percent improvement on a scale of 0-4. Subjects received a 0 for no improvement, 1 for less than twenty-five percent improvement, a 2 for twenty-five to fifty percent improvement, a 3 for fifty to seventy-five percent improvement and a 4 for greater than seventy-five percent improvement. Mean scores from all continuing 16 participants were averaged for each encounter, for a total of 8 visits. The percent improvement in mean telangiectasia severity was calculated by comparing the change in mean scores at week 48 to mean scores assessed at baseline.


Secondary Outcome Measures:
  • Skin Tolerance [ Time Frame: Baseline, Weeks 1, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48 ]
  • Skin Photodamage [ Time Frame: Baseline, Weeks 1, 4, 8, 12, 24, 36, 48 ]
  • Transepidermal Water Loss (TEWL) [ Time Frame: Baseline, Weeks 1, 4, 8, 12, 24, 36, 48 ]
  • Cosmetic Acceptability [ Time Frame: Baseline, Weeks 1, 4, 8, 12, 24, 36, 48 ]

Enrollment: 24
Study Start Date: April 2007
Study Completion Date: February 2009
Primary Completion Date: February 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: PRK 124
Topical PRK 124 (Pyratine-6)(0.125%) moisturizing lotion applied twice daily to the face for 48 weeks. Subjects will wash their faces prior to application. The applications will occur in the mornings and one hour before bedtime.
Other: PRK 124
Topical PRK 124 (0.125%) moisturizing lotion applied twice daily to the face for 48 weeks
Other Names:
  • Pyratine-6
  • N-furfuryl-9-(2-tetrahydropyranyl)adenine

  Show Detailed Description

  Eligibility

Information from the National Library of Medicine

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, Learn About Clinical Studies.


Ages Eligible for Study:   21 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • be at least 21 years old
  • be in reasonably good health as defined by the study doctor
  • have routine laboratory tests to evaluate your blood cell count, and kidney and liver function
  • for females of child-bearing age, not be pregnant or nursing and have a negative urine pregnancy test (except if surgically sterile or at least 1 year menopausal)
  • for females, agree to use medically acceptable forms of birth control throughout the entire study (medically acceptable forms of birth control include oral contraceptive ["the pill"], implants such as Norplant®, injectable progesterone [Depo-provera®], diaphragm and spermicide or condoms and spermicide)
  • must have mild to moderate acne rosacea
  • be willing to refrain from using non-approved lotions, moisturizer, cleansers or lotions on affected facial areas during the treatment period
  • be capable of understanding and giving written, voluntary informed consent before study screening
  • be willing to consent to facial photographs at baseline and each follow-up visit to monitor treatment with the test product.

Exclusion Criteria:

  • have a history or evidence of any chronic or reoccurring skin disease or disorder (e.g., psoriasis, eczema, etc.) affecting the face
  • have known or suspected hypersensitivity to study treatment or any of its ingredients
  • have used systemic retinoids within 6 months prior to study entry (e.g., acitretin, isotretinoin)
  • have received treatment with systemic corticosteroids (e.g. prednisone) or antibiotics within 1 month
  • have used topical treatment to the face with retinoids (e.g. tretinoin, adapalene), or antibiotics or corticosteroids, within 2 weeks prior to study entry
  • are unwilling to use a sunscreen with an SPF of 30 during the study
  • have participated in any clinical trial involving an investigational drug or cosmetic product or procedure within the past 30 days
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00580723


Locations
United States, California
UC Irvine Dermatology Clinical Research Center
Irvine, California, United States, 92697
Sponsors and Collaborators
University of California, Irvine
SenetekPLC
Investigators
Principal Investigator: Gerald D Weinstein, MD University of California, Irvine
  More Information

Additional Information:
Publications:
Responsible Party: Christopher Zachary, MBBS, FRCP, University of California, Irvine
ClinicalTrials.gov Identifier: NCT00580723     History of Changes
Other Study ID Numbers: 2006-5307
Contract SPLC-41239 ( Other Identifier: University of California, Irvine )
First Submitted: December 21, 2007
First Posted: December 27, 2007
Results First Submitted: March 18, 2013
Results First Posted: December 10, 2013
Last Update Posted: January 17, 2014
Last Verified: December 2013

Keywords provided by Christopher Zachary, University of California, Irvine:
acne
rosacea
acne rosacea
papulopustular rosacea
erythema
telangiectasia
flushing

Additional relevant MeSH terms:
Rosacea
Skin Diseases