View clinical trials related to Vitiligo.
Filter by:The present study will aim to evaluate: 1. The presence of Hypoxia Inducible Factor in vitiligo patient 2. Defect of Autophagy Related Genes in vitiligo patient 3. The cross relation between Autophagy Related Genes and Hypoxia Inducible Factor in the pathogenesis of vitiligo among Egyptian patients in Sohag Governorate
The goal of this clinical trial is to learn if platelet-rich plasma (PRP) works to treat acral stable vitiligo in adults. It will also learn about the safety of platelet-rich plasma. The main questions it aims to answer are: - Does PRP combined with 308 nm excimer phototherapy improve the efficacy compared to 308 nm excimer light alone in the treatment of vitiligo of the extremities? - What medical problems do participants have when taking PRP intradermal injections? Researchers will compare PRP to a placebo (a look-alike substance that contains no drug) to see if PRP works to treat acral vitiligo. Participants will: - Receive PRP intradermal injections once a month and 308 nm excimer phototherapy twice a week, or the same frequency of saline injections and phototherapy for 6 consecutive months - Visit the clinic once every 1 month for evaluations - Keep a diary of their symptoms or side effects during follow-up
For each patient, one side of body will be treated with NB-UVB alone while the other side will be treated with NB-UVB therapy in addition to intradermal injection of PRP every 2 weeks. Patients will be photographed at the first visit, in the middle and at the end of therapy. Each patient will sign a written consent form to be included in the study and to be photographed.
Vitiligo affects approximately 1 to 2% of the global population and significantly impacts people's quality of life. Achieving the best treatment outcomes for vitiligo involves addressing the autoimmune inflammatory response to stop the depigmentation process and promoting the differentiation of melanocyte stem cells to induce repigmentation. The loss of melanocytes in vitiligo is a result of an autoimmune process. While the IFN gamma pathway plays a crucial role in the adaptive immune response in vitiligo, there is increasing evidence highlighting the importance of the innate immune response. Deucravacitinib, an allosteric TYK2 inhibitor, has shown effectiveness and safety in treating psoriasis. It inhibits the responses of IFN alpha (IFNα), IFN beta (IFNβ), and IL12, and may also have an impact on the Th1 response. The hypothesis is that by targeting the IFN type I response and IL12, deucravacitinib could effectively halt the depigmentation process and facilitate repigmentation of vitiligo lesions. When combined with NB-UVB, the process of repigmentation should be significantly enhanced. The primary objective is to compare the proportion of patients treated with deucravacitinib versus placebo achieving VITIL-IA 50 at week 24. Interventions Following central randomization, patients will be assigned to receive either deucravacitinib 12mg daily (QD) or a placebo daily (QD) for a duration of 24 weeks. At the end of this period, patients will be re-randomized to receive either deucravacitinib 12mg QD alone or deucravacitinib 12mg QD + twice weekly narrowband UVB treatment twice weekly for an additional 24 weeks. Throughout the study, there will be a total of six visits conducted: selection, inclusion, Week 12, Week 24, Week 36, and Week 48. In patients who volunteer, a skin biopsy will be performed on both the lesional and peri-lesional areas at baseline, Week 12 and Week 36. Serum and plasma samples will be collected at the screening visit, Week 12, Week 24, Week 36, and Week 48.
This project aims to develop and evaluate an online intervention to prevent and/or reduce self-stigma in German patients with visible chronic skin diseases. Evaluation of the intervention with regard to effectiveness and feasibility will follow an open-label randomized controlled design with 550 patients in total. The results of the program are expected to provide new insights and markedly extended knowledge on the mechanisms of self-stigma in chronic skin conditions. The new online intervention can be used in routine care, aiming for better patient care in practice and, ultimately decreased extent of self-stigma, increased quality of life of patients, and decreased rates of depression, anxiety, and suicide ideation.
The objective of the study is to explore various clinical and biochemical parameters and their potential associations with disease severity, activity, and prognosis in atopic dermatitis, psoriasis, alopecia areata, and vitiligo. Further, the study aims at validating remote assessments of skin lesions, using smartphone-acquired photos. The study will also assess the feasibility and compliance with weekly remote-assessments and patient-reported data collection over the full study period of one year. The study will observe patients through a period of one year and will provide detailed information concerning the type and dose of medication used, as well as data to evaluate the disease activity with high resolution during this period. The study will involve collection of serum samples for exploratory biomarkers, and punch biopsies. A total of approximately 370 patients, divided into the four disease areas of atopic dermatitis, alopecia areata, psoriasis, and vitiligo, will be enrolled in the study. Using a combination of self-reported and on-site assessments and procedures, the intent is to observe the natural history of patients with select dermatological conditions, investigate tissue characteristics associated with disease activity and symptoms, and evaluate the validity of remote assessment of lesions, and feasibility of weekly self-acquired smart-phone images of skin lesions for remote assessment.
Vitiligo is an acquired pigmentary disorder on skin and/or mucosae, which is characterized by death of melanocytes (MCs), affecting 0.5%-2% of the population worldwide (1). It doesn't affect the health of patients but it has marked social pressure and greatly interfere with their quality of life (2,3). It presents with well circumscribed milky white patches that occur secondary to destruction of melanocyte, it may appear at any age and affect both sexes equally. It can affect ethnic groups and people of all skin types with no predilection (4). Clinically, several types of vitiligo are distinguished according to the distribution of the achromic lesions. One or more lesions in a dermatomal pattern are characteristic for segmental vitiligo (SV) while this segmental distribution is absent in non-segmental vitiligo (NSV). The latter variety includes both the focal type and the generalized type (5). Numerous previous studies tried to illustrate the pathogenesis behind the disease, but the exact pathophysiology is still not fully understood. It is a multifactorial disease. Factors include, neural theory, oxidative stress theory, autoimmune hypothesis, intrinsic theory, melanocytorrhagy hypothesis (6). Many theories tried to explain the mechanisms of MC destruction in vitiligo. Apoptosis is one of the most widely studied cell death pathways. In addition, the other two forms of cell death, conventional necrosis and autophagy seem to be involved in the death of vitiligo MCs under certain situations. Moreover, new types of regulated cell death including necroptosis, pyroptosis, and ferroptosis may also participate in the pathogenesis (7). Pyroptosis is a highly inflammatory form of necrosis cell death NCD regulated mainly by caspase-1, which is initiated following large supramolecular complex ermed inflammasome activation (8). The inflammasome-activated Caspases then cleave the pyroptosis-inducing protein Gasdermin D (GSDMD), which forms a pore in the plasma membrane and causes cell lysis as well as the secretion of IL-1β typically (9). Another study suggests that inflammasome activation could be a useful marker for assessing disease progression of vitiligo (10). However, the link between vitiligo and inflammasome activation is still unclear. The inflammasome regulates cell death and inflammation via activation of caspase-1 (11). The activation of caspase-1 promotes the secretion of proinflammatory cytokines IL-1β and IL-18, as well as the initiation of pyroptosis (12). So, evaluation of pyroptosis-related indicators (GASDM-D, IL 1β & IL-18) may help understanding the obscure inflammasome pathway involvement in the pathogenesis of Vitiligo.
Introduction Vitiligo is an autoimmune disease of the skin that targets pigment producing melanocytes and results in patches of depigmentation that are visible as white spots (Frisoli et al., 2020) Vitiligo is a relatively common acquired pigmentation disorder that can cause significant psychological stress (Leung AKC et al., 2021). The disease affects both genders equally, it can appear at any age, and the average age of onset is somewhat variable in different geographic (Majumder et al, 1993), with an estimated prevalence of 0.5-2% of the population in both adults and children worldwide (Krüger et al, 2012). Vitiligo results in white macules and patches on the body. Initial lesions occur most frequently on the hands, forearms, feet, and face, favoring a periocular or perioral distribution (Ahmed jan N et al., 2023). Vitiligo lesions are classified into 2 major categories: segmental vitiligo (SV) and non-segmental vitiligo (NSV) (Relke et al ., 2019). Segmental vitiligo is characterized by its early onset, rapid stabilization, and unilateral distribution (Van Geel et al., 2017). Non-segmental vitiligo comprises of generalized (vitiligo vulgaris), acrofacial, mucosal (multifocal), and universal vitiligo (Kovacevic et al., 2016). Non-segmental vitiligo (NSV) is the most common form of vitiligo (Benzekri et al., 2013). Multiple mechanisms are involved in melanocyte disappearance, namely genetic predisposition, environmental triggers, metabolic abnormalities, impaired renewal, and altered inflammatory and immune responses (Boniface K et al ., 2018). The results of some studies indicate a frequent association of vitiligo with autoimmune diseases. A number of studies have established a higher prevalence of autoimmune endocrine diseases in women, as well as in non-segmental vitiligo patients and in cases of family history of vitiligo and/or other autoimmune diseases. In addition, it was shown that the prevalence of endocrine diseases increases with increasing area of depigmentation (Troshina EA et al., 2020). Autoimmunity in vitiligo is driven by the IFN-γ-CXCL10 cytokine signaling pathway. Activated melanocyte-specific CD8+ T cells secrete IFN-γ, which signals through the IFN-γ receptor (IFN-γR) to activate JAK1/2 and STAT1. This induces the production of CXCL9 and CXCL10, which signal through their receptor CXCR3 to recruit more auto-reactive T cells to the epidermis, resulting in widespread melanocyte destruction (Harris JE et al., 2017). The lysosomal cysteine proteinases of the papain family are involved in lysosomal bulk proteolysis, major histocompatibility complex class II-mediated antigen presentation, pro-hormone processing, and extracellular matrix remodeling.
Vitiligo is the most common depigmentation disorder affecting around 1% of the population worldwide. Fifty two percent of patients develop vitiligo before the age of 20 and around 80% develop vitiligo before the age of 30 years old.1 Vitiligo often presents in childhood and tends to be a lifelong disease, requiring prolonged courses of phototherapy. Currently no national or international registry for patients with vitiligo exists. Individual dermatologists maintain a database of such patients, however no coordinated efforts have been made to combine these individual registries into a broader national registry. Finally, recently published British Association of Dermatologists (BAD) guideline for the management of vitiligo, recommended the development of a national registry for people with vitiligo undergoing systemic or light therapy to identify outcomes and safety.
Vitiligo, a significant dermatologic challenge affecting 0.5 to 2% of the global population. Despite various existing medical approaches, current vitiligo treatments are still far from optimal.