View clinical trials related to Vitiligo.
Filter by:The study will evaluate the effectiveness of Tacrolimus 0.03% ointment monotherapy in patients with vitiligo. Patients will be treated for 6 months and followed for 3 months after treatment. All types of vitiligo will be included.
The molecular mechanisms of action of photo(chemo)therapy in skin diseases are investigated in this study. The phototherapeutic modalities employed include UVB (ultraviolet B), UVA (ultraviolet A), PUVA (psoralen+UVA) and/or extracorporeal photochemotherapy (photopheresis). The study will address whether and how photo(chemo)therapy affects specific biologic pathways in different skin disorders and search for predictive biomarkers.
Intro: Patients with vitiligo have a reduced protection on depigmented areas. To date, however, little is known about photoprotection habits in patients with vitiligo even though these patients are thought to have a decreased ability to efficiently protect their skin against sun damage. Moreover, exposure to artificial UV is one of the major elements of the treatment of vitiligo even though certain phenotypes of vitiligo could be photoinduced. Hypothesis The Primary objective is to describe patients behaviour with sun exposition The Secondary objectives are: - to assess the link between sun exposition and vitiligo outbreaks - to assess photoprotection habits according to initial phototype and vitiligo severity (SA-VES) - To validate a short form of the VIPs questionnaire, a validated burden questionnaire. Method We aim to conduct a prospective cross sectional study in patients with Vitiligo with the aim to evaluate sun protection habits in patients with vitiligo. For that purpose a semi-directed questionnaire to investigate the sun protection behavior of vitiligo patients (adults> 18 years of age) have been created by experts in the field. Vitiligo severity will be self-assessed by patients using a recently validated patient reported outcome, the SA-VES. Consecutive vitiligo patients consulting in the dermatology department of Henri Mondor Hospital (Créteil, France) will be proposed to participate the study after having given their oral consent. We are planning to enrol 500 patients. In a first step, a descriptive analysis will be carried out in order to describe the characteristics of the sample. Basic summary statistics, such as proportions, means and standard deviations, will be used to characterize the population. In order to identify the factors associated with the severity of the disease on the one hand and the phototype on the other, comparisons between groups (severe versus non-severe and light phototype versus dark phototype) will be carried out by unconditional logistic regression. All potential predictors of severity will first be assessed individually, and Odds Ratio (OR), corresponding 95% CIs and P values will be calculated. The significance of the OR will be determined by the Wald test χ2, and the predictors with P <.20 will then be evaluated using a multivariate analysis with a pre-selection procedure. Possible interactions and multi-colinearity will be examined. Finally, the quality of fit of the final model will be evaluated using the logistic regression diagnostic procedure. P ≤ 0.05 will be considered as statistically significant. The Hosmer-Lemeshow test will be carried out to test the suitability of the model. Conclusion This study will help to identify gaps in the knowledge of sun protection habits in patients with vitiligo.
Vitiligo is a chronic acquired cutaneous disease of pigmentation that affects patients' quality of life across all degrees of involvement and severity. Phototherapy, such as Narrow band UVB (NB-UVB), is a clinically indicated treatment for skin lesions. NB-UVB treatment has been shown to promote repigmentation and normalize cellular behaviors. The investigators would like to analyze the change in protein expression and histological change in skin from NB-UVB treatment in participants with Vitiligo. The investigators are recruiting participants with Vitiligo on the body, arms, and/or legs.
This study aims to evaluate some differences in the immune system between patients with vitiligo and patients without the disease. These differences will be evaluated by the extraction of peripheral blood that will be analyzed before the treatment and after the treatment that, in the habitual way and at the discretion of the responsible dermatologist. Patients agreeing to participate in the study will be subjected to extraction of two tubes (20 ml) of peripheral blood (baseline) and after 12 weeks (+/- 5 days) of treatment. Therefore, neither treatment nor follow-up visits will be modified by participation, but will be the same whether or not participate in the study. In the case of controls, two peripheral blood tubes (20ml) will be removed in a single participation. Patients with vitiligo will also be asked to complete questionnaires to measure stress, depression and perception of disease (PSS-10, Skindex-29, HADS, Likert) before and after 12 weeks (+/- 5 days) of therapeutic intervention . This study will include 20 patients with active non-segmental vitiligo and 10 controls without the disease. The duration of participation in this study will be 12 weeks (+/- 5 days) for patients with vitiligo and a single participation (extraction of 20 ml of peripheral venous blood) for the controls.
The aim of this study is to evaluate the influence of simvastatin and atorvastatin on vitiligous lesions in patients with non-segmental vitiligo.
Vitiligo is an acquired disorder of the skin and mucous membranes characterized by well circumscribed depigmented macules and patches that occur secondary to selective destruction of melanocytes (Zhang et al., 2009). Generalized vitiligo is the most common clinical presentation and often involves the face and acral regions (Alikhan et al., 2011).
The study will compare the effectiveness of combined treatment with NB-UVB and tacrolimus versus NB-UVB alone . Patients will be treated for 6 months and followed up after 3 months .All types of vitiligo will be included except universal vitiligo.
The Janus kinase/signal transducer and activator of transcription (JAK-STAT) cytokine signaling pathway is an emerging area of interest in dermatology, and emerging evidence suggests that this pathway may play a crucial role in pathogenesis of inflammatory skin disorders. Recent advances on the role of cytokines in the pathophysiology of immune mediated inflammatory diseases lead to the understanding that many pro inflammatory interleukins use JAK/STAT components for signal transduction .
Vitiligo is an acquired disease with a variable course. It is characterized clinically by well-defined depigmented macules or patches thought to occur secondary to melanocyte dysfunction and loss. it is the most common depigmentation disorder, affecting approximately 0.5 to 2.0 percent of the population and has no predilection for gender or race .