Active clinical trials for "Vitiligo"

The study offers narrowband UVB light therapy to patients who have 5% of their body involved with vitiligo. The hypothesis is that Narrowband UVB promotes melanocyte proliferation in vitiligo lesions.

This is a randomized, double blind, placebo-controlled, phase II study. The study will be performed as a multicenter, multinational study.

Vitiligo is an acquired, non contagious skin disorder characterised by depigmented patches of skin that may appear in a localised or very generalised distribution, and affecting 0.5-2.0% of the global population.There are however, limited population-based studies on the burden of vitiligo and disparities across people of different ethnicities and deprivation. The overall purpose of this study is to provide an estimate of the lifetime risk of vitiligo in the population overall and by sociodemographic subgroups. Moreover, to do a subgroup analysis in the vitiligo population to identify health-related disparities across people in different sex, age, deprivation and ethnicity. A detailed understanding of the burden of disease in different sociodemographic groups is vital to plan resource provision.

We will investigate the process of vitiligo induction and the influence of different commonly used cream treatments on this process. Studies comparing different treatments for vitiligo in the induction stage of the disease are still missing. The study hypothesis = cream treatment can stop actively spreading vitiligo lesions during the early induction stage of the disease.

This study aims to detect the presence and diversity of Tissue resident memory T cell populations in early and late cases of generalized non-segmental Vitiligo.

This study aims at evaluating the effect of NB-UVB on tissue level of IL-15 and IL-15 receptor alpha subunit (IL-15Rα)(CD215) in active non segmental vitiligo. This in turn will shed light on the potential role of phototherapy as a safe mean of prevention of vitiligo recurrence as well as evaluating the utility of IL 15 and IL 15 Rα as markers of vitiligo activity/recurrence.

A randomized controlled split-face pilot study was planned to investigate the preventive effect of tretinoin 0.05% cream on hyperpigmentation during phototherapy in patients with vitiligo.

Previous studies have evaluated the transplantation of pigment cells (melanocytes)and skin cells (keratinocytes) for the treatment of vitiligo. This procedure is known as MKTP (Melanocyte Keratinocyte Transplantation Procedure). Multiple studies have found this procedure to be both safe and effective for the treatment of vitiligo. The majority of these studies utilized trypsin to help isolate melanocytes and keratinocytes. Trypsin is enzyme that helps to separate the different layers of skin. However, some cell biologists believe that the enzyme dispase (which can be used to separate the epidermis from the dermis) is less toxic to cells of the epidermis and can result in a greater number of viable melanocytes and keratinocytes for transplantation. This study will look at the repigmentation rates of MKTP using trypsin to isolate cells, versus MKTP using dispase to isolate cells.

There are several surgical methods to treat vitiligo patches, and follicular unit extraction (FUE) is one among them. FUE, performed using punch biopsy extraction and hair follicle transplantation, has proven safe and effective in multiple studies for treatment of hair bearing (non-glabrous) skin. This technique has not yet been trialed on hairless areas (glabrous skin) affected by vitiligo, such as the lips, fingertips, knuckles, wrists, and feet, which tend to be resistant to standard treatments. We suspect this technique will be successful in patients who have responded well to other therapies in all areas except for non-hair bearing areas.

Rationale: Vitiligo is a common skin disorder that can impair a patient's quality of life. Many depigmented lesions in vitiligo patients remain therapy resistant for medical treatment. Therefore new therapeutic options in these patients are necessary. Currently, dermabrasion by conventional or fractional laser therapy in combination with NB-UVB therapy and steroids appears to be effective in therapy resistant areas. However, little literature on this combination is available. Objectives: To assess the efficacy and patient safety of (1)fractional CO2-laser treatment in combination with NB- UVB,(2) fractional CO2-laser treatment in combination with NB- UVB and topical corticosteroids versus NB-UVB treatment alone(3) Study design: Prospective observer blinded randomised intra-patient controlled study. Study population: 23 patients ≥ 18 years with non segmental vitiligo who receive NB-UVB treatment at the Netherlands Institute for Pigment Disorders (SNIP) at the Academic Medical Centre University of Amsterdam. We will include patients with 3 depigmented lesions that are resistant to NB- UVB treatment after 3 to 6 months. Methods: Three NB-UVB resistant depigmented regions on the trunk or extremities will be randomly allocated to;(1) NB-UVB treatment in combination with fractional CO2 laser abrasion, or (2) NB-UVB treatment in combination with fractional CO2 laser abrasion and topical steroids, or (3) NB-UVB treatment alone. NB-UVB treatment and topical steroids will be given according to the standard treatment protocol of the SNIP and continued for at least 6 months. Two and 6 months after the laser treatment, the percentage of repigmentation of the lesions will be assessed.