Active clinical trials for "Vitiligo"

This is a Phase 2b, randomized, double blind, parallel group, multicenter study with an extension period. The study will have a maximum duration of approximately 60 weeks. This includes an up to 4 weeks Screening Period, a 24 week dose ranging period, an up to 24 week extension period and a 8 week Follow up Period.

Total Glucosides of Paeony(TGP) As a traditional Chinese medicine, peony root is the dried root of peony of Ranunculaceae, cultivated all over the country.The main ingredient is a group of glycosides, including paeoniflorin, hydroxy paeoniflorin, paeoniflorin, paeoniflorin, benzoyl paeoniflorin etc, collectively referred to as total glucosides of paeony（TGP）. Paeoniflorin accounted for more than 90% of the TGP, is the main active ingredient of white peony root.By pharmacological and clinical studies of TGP, it have found that the mechanism of TGP is unique and mainly acts on the upstream of the immune response - inhibiting the presentation of antigens. It is different from immunosuppressive agents on T, B lymphocytes, or hormones and other drugs acting on the whole process. Vitiligo Vitiligo is a pigment deprived skin disease caused by the destruction of melanocytes, the global incidence of about 1%. The pathogenesis is not yet clear, the current study shows that oxidative stress and autoimmunity is an important part of its occurrence and development. The basic and clinical research of TGP used in vitiligo The ratio of cluster of differentiation 4+ / cluster designation 8+ T cell vs. cluster of differentiation 4+ chronotropic dose 25+ in the peripheral blood of patients with vitiligo could be significantly increase, after patients treatment by TGP combined with tacrolimus. Thereby enhancing the patient's maintenance of immune self-stability and Immune tolerance ability, promoting the healing of skin lesions. It showed significant effect in stable vitiligo,when patients treated by autologous epidermal grafting combined with TGP.

Vitiligo is a common acquired disorder of pigmentation affecting 0.5% to 1% of the world population. Sharply demarcated patches of depigmentation, which can affect all ethnicities, and can lead to cosmetic disfiguration and psychosocial distress, characterize the disease. The etiology of vitiligo remains unknown. Various mechanisms have been proposed, such as autoimmunity, self-destruction, biochemical, genetic, neural, oxidative stress, and an imbalance of epidermal cytokines leading to inflammation and selective loss of epidermal melanocytes. Currently, the most popular theory is autoimmunity. Previous studies noted that around 25-30% of patients have at least one other autoimmune disease, such as autoimmune thyroid disease, Addison's disease, pernicious anemia, and alopecia areata. Currently, NB-UVB phototherapy is the most widely used therapeutic option for vitiligo affecting more than 10-20% of the skin surface, as it is generally considered to be a safe initial treatment. Potential side effects include phototoxic reaction, thickening of the skin and koebnerization. NB-UVB is a band of UV radiation with a wavelength of 311-313 nm. UVB induces mitogenesis and migration in melanocytes mediated by several factors such as IL-1, TNF alpha, and leukotriene C4. UV radiation produces increased number and activity of melanocytes, increased melanin density, elongation and branching of dendrites, with increased transfer of more heavily melanized melanosomes to keratinocytes, seen clinically as increased pigmentation. Apremilast is an oral small molecule phosphodiesterase-4 (PDE4) inhibitor that has been shown to regulate inflammatory mediators. Apremilast enters cells by passive diffusion and, once intracellular, binds PDE4. PDE-4, the dominant phosphodiesterase expressed in immune cells, degrades cyclic AMP (cAMP) into AMP. PDE4 inhibition thereby elevates intracellular cAMP, which can down-regulate the inflammatory responses such as TNF-α, IFN-γ, interleukins (IL) 2, 12 and 23 through mechanisms such as partially inhibiting expression of inflammatory cytokines and increasing expression of anti-inflammatory mediators such as IL2 and IL10. The hypothesis is that apremilast will shut down the inflammatory insult in vitiligo and NB-UVB phototherapy will then be able to regenerate melanocytes and their activity. By examination of skin biopsies taken pre- and post-therapy, the study team aims to assess changes in immune and cellular markers in affected skin.

This is a study that is being conducted in order to assess the efficacy of microneedling as a stand-alone treatment for vitiligo. Vitiligo is an autoimmune depigmentation disease of the skin that is characterized by the destruction of epidermal melanocytes by CD8+ T cells. The pathogenesis of Vitiligo has been linked to autoimmunity, oxidative stress, and genetic susceptibility.

The aim of this study is to evaluate the influence of two concentrations of methotrexate on vitiligous lesions in patients with non-segmental vitiligo

Clinical significance of circulating T regulatory cells , soluble CD25 and CXCL9 to assess disease activity of vitiligo.

Vitiligo is a skin disorder that causes substantial social and psychological distress due to multiple patches of depigmentation.Disease can target at any age, but it appears to affect various parts of body due to loss of melanin. Although the exact cause of the disease is unknown, several theories suggest that genetic predisposition, autoimmunity, and increased vulnerability of melanocytes to the deleterious effects of harmful metabolites all play a role in disease causation. It impacts 0.1%-2% of the general population, with a 30% familial prevalence rate. Vitiligo treatment still presents a therapeutic challenge for dermatologists despite a variety of therapeutic modalities. Topical steroids, ultraviolet B phototherapy (UVB 280nm-320nm), and photochemotherapy (PUVA i.e., psoralen plus UVA 329nm-400nm) are traditional treatment options. Topical calcipotriol and excimer laser are also used. According to research, narrowband UVB (NB-UVB) is effective when used alone. Few studies, however also, have reported more than 75% re-pigmentation in patients treated with NB-UVB in conjunction with other modalities. Topical immunomodulators (tacrolimus, pimecrolimus) are considered safe and effective long-term treatments for vitiligo because they do not cause skin atrophy, which is associated with long-term use of topical corticosteroids. Tacrolimus is an effective treatment for vitiligo when used alone; in one study, 61% of patients showed more than 75% repigmentation when treated with tacrolimus alone. Another study found that when tacrolimus was combined with NB-UVB, 73% of patients experienced more than 50% repigmentation. The objective of this research was to present a comparatively new mode of treatment that may be beneficial to vitiligo patients.

The study aims to evaluate the safety and efficacy of the combination of topical baricitinib and 308-nm monochromatic excimer light versus 308-nm monochromatic excimer light alone in treatment of non-segmental vitiligo.

The purpose of this study is to investigate stress response pathways in tissues and melanocytes from patients with vitiligo. Investigators are collecting evidence of UPR and stress response activation in tissues and melanocytes from patients with vitiligo. Individuals with vitiligo will have punch biopsies to study stress response UPR activation and NF-κB signaling to test our hypothesis. In order to characterize differences between disease and normal states, a second arm of control individuals (Arm 2) will be recruited.

Photocil is a topical drug (cream) that selectively delivers Narrow Band - Ultraviolet B (NB-UVB) therapy when exposed to sunlight. Photocil is intended to help protect users from non-therapeutic Ultraviolet B (UVB) radiation while selectively passing wavelengths of light in the NB-UVB range with peak transmission of 308nm. The aim of the study is to assess the safety and efficacy of Photocil in the treatment of vitiligo.