- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00844363
Narrowband UVB Phototherapy in the Treatment of Psoriasis Vulgaris
June 29, 2011 updated by: Rockefeller University
Mechanism of Action of Narrowband UVB Phototherapy in the Treatment of Psoriasis Vulgaris
Ultra-violet light B (UVB) therapy has been used by dermatologists to treat psoriasis for decades.
Only a few studies have begun to dissect the mechanism of how NB-UVB therapy causes lesion resolution.
Results from this study will aid in identifying other diseases that may be treated successfully with NB-UVB.
If we can identify the mechanism of action of this therapy, this may give us additional new therapeutic targets for psoriasis and other diseases.
Our overall hypothesis is that UVB induces changes that will indicate a mechanism of action of this therapy in psoriasis.
Study Overview
Study Type
Interventional
Enrollment (Anticipated)
20
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
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New York
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New York, New York, United States, 10065
- Rockefeller University
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Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Signed informed consent.
- History of chronic plaque psoriasis vulgaris, for at least six months.
- ≥10% body surface affected
- Age 18 or greater.
- Concomitant, chronic, but well-controlled medical conditions such as hypertension are allowable.
- No treatment with topical steroids for at least 2 weeks prior to entering the study
- No treatment with systemic therapies, including etretinate, UVB, PUVA, or cyclosporine, other biologics 4 weeks prior to entering the study. However, if a patient is considered to be "unstable", or would deteriorate clinically if the systemic agent is ceased (eg efalizumab), a shorter "washout" period may be considered, and would be documented in the patient charts.
- Patients who receive a stable dose of methotrexate (defined as <15mg/week for 4 months or greater) for psoriatic arthritis may be included.
Exclusion Criteria:
Subjects who do not meet the above criteria, or who meet any of the following criteria:
- Guttate, erythrodermic, or pustular psoriasis as sole or predominant form of psoriasis.
- PHOTOSENSITIVITY: Hypersensitivity to sunlight or UVB light of any type; history of Lupus, PMLE, or any disease known to be worsened by UV light exposure
- A history of non-melanoma skin cancer may be acceptable, and in this situation, the patient will be carefully evaluated.
- Poorly controlled medical conditions of any kind.
- Any medical condition that, in the opinion of the Investigator, would jeopardize the health or well being of the patient during the course of this study.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Non-Randomized
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Other: NB-UVB
Regular, monitored NB-UVB treatment.
Patients will be treated 3 times per week, and a full course of therapy is 12 weeks.
NB-UVB dosing is increased by 5-20% increments in exposure time, depending on response of the patient.
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UVB light will be administered to the entire body except for the genitals in men and eyelids, which will be shielded.NB-UVB dosing is increased by 5-20% increments in exposure time, depending on response of the patient.
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
The primary outcome is genomic analysis of lesional skin biopsies, in a time course experiment,by microarray and RT-PCR.
Time Frame: End of study
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End of study
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Secondary Outcome Measures
Outcome Measure |
Time Frame |
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cell counts of leukocytes populations in skin biopsies including (but not limited to) myeloid dendritic cells (CD11c and CD1c/BDCA-1), plasmacytoid dendritic cells (BDCA-2/CD123), macrophages (CD163), and T cells (CD3, CD4, CD8, Foxp3, RORγ).
Time Frame: End of study
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End of study
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Effects of NB-UVB on NL skin will be determined by comparison of microarray analysis of NL skin biopsies throughout treatment.
Time Frame: End of study
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End of study
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To determine if there is a set of genes that can predict response, expressed in circulating PBMCs, we will perform microarray on baseline PBMCs, and compare the gene sets for responders and non-responders (discriminant analysis).
Time Frame: End of study
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End of study
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To evaluate if treatment causes an altered ratio of Th17:Tregs in the circulation and skin, we will perform intracellular cytokine staining by flow cytometry on peripheral blood and from the shave biopsy.
Time Frame: Before and after treatment
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Before and after treatment
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Investigators
- Principal Investigator: Michelle Lowes, MD, PhD, Rockefeller University
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
November 1, 2008
Primary Completion (Actual)
May 1, 2011
Study Completion (Actual)
May 1, 2011
Study Registration Dates
First Submitted
February 12, 2009
First Submitted That Met QC Criteria
February 13, 2009
First Posted (Estimate)
February 16, 2009
Study Record Updates
Last Update Posted (Estimate)
June 30, 2011
Last Update Submitted That Met QC Criteria
June 29, 2011
Last Verified
June 1, 2011
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- MLO-0651
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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