Biomarkers of Lichen Sclerosus

Study Overview
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Brief Summary
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Lichen sclerosus (LS) is a skin condition of the external genitals (vulva) of women. LS causes vulvar itching, pain, and burning. In addition, LS causes scarring of the vulva which may cause significant lack of sexual pleasure or pain. Lastly, 4-6% of women with LS will develop vulvar cancer. The purpose of this study is to learn the gene expression file changes in skins affected by LS as compared to normal skins in order to discover the mechanism of the LS, and further to develop effective drugs to treat the condition.

Detailed Description
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Lichen sclerosus (LS) is a chronic, lymphocyte mediated cutaneous disorder affecting approximately one in seventy women. Presenting symptoms may include intense pruritis, pain, burning, and dyspareunia. This disorder may affect any area of the skin, but has a notable predilection for the female genital region, in particular, the vulva, per anal area and the groin. Affected females outnumber affected males by 13:1. Typically, the patient is a menopausal woman, but prepubertal girls and women of all ages may be affected. The typical lesions of lichen sclerosus are white plaques and papules, often with areas of ecchymosis, excoriation, and ulceration. Often, there is destruction of the vulvar architecture with scarring of the clitoral prepuce, resorption of the labia minora, and narrowing of the introitus. Vulvar lichen sclerosus has a 4%-6% transformation malignant rate and women with the disease are at a 250-fold increased risk for developing vulvar carcinoma than women without lichen sclerosus. While the exact etiology of LS is as yet unknown, there is at least a suggested genetic component as evidenced by case reports of familial LS, findings of associations with HLA antigens, and high rates of concordance with other autoimmune disorder. The purpose of this study is to determine the differences in the genomic/proteomic profiles between LS and normal skin biopsies for women with active vulvar lichen sclerosus in order to identify potential biomarkers that can be used for the prevention, early diagnosis and effective treatment for LS. The study will aim to identify genes/proteins/glycoproteins biomarkers that are associated with LS, select biomarkers associated with LS either individual candidate biomarker or as a panel, validate the identified candidate biomarkers for LS using targeted analysis of candidate biomarkers from independent LS specimen sets, develop assays to determine the clinical utilities of the identified biomarkers as minimum invasive tests for the early detection of LS and determine the clinical utility of biomarkers for biopsy-based tissue tests for LS diagnosis and treatment.

Official Title
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Discovery and Validation of Biomarkers of Lichen Sclerosus

Conditions
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Lichen Sclerosus

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 18-75 of age Diagnosis of active, Histologically proven, vulvar lichen sclerosus Exclusion Criteria: Under the age of 18 or over the age of 75. Participants who are pregnant at the time of recruitment If, in the clinical opinion of Dr. Andrew Goldstein, she: does not have active LS has active infection has evidence of any other dermatologic disease of the vulva has evidence of neoplastic disease of the vulva If, in the opinion of Dr. Andrew Goldstein, they will be unable to keep the biopsy sites clean until they heal. If the biopsy specimen sent to dermatopathology is not confirmatory for active lichen sclerosus then the specimens obtained from that patient will be excluded from the study.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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Female

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Differential gene expression between LS and normal vulvar skin tissue | Gene expression obtained from biopsies via Next Generation Sequencing (RNASeq) | 1-2 year | 
| Differential protein expression between LS and normal vulvar skin tissue | Protein expression obtained from biopsies via Western blot | 1-2 year | 
| Identification of tissue-derived glycoproteins in serum | Glycoproteins identified via glycoproteomic technologies | 1-2 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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lichen sclerosus