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  • Title: Randomized clinical trial of combined therapy with oral α-lipoic acid and NB-UVB for nonsegmental stable vitiligo.
    Author: Sun Y, Guan X, Wang H, Zhang J, Gu H, Lu H, Yao Z, Chen X, Zeng F, Wu Y, Gao XH.
    Journal: Dermatol Ther; 2021 Jan; 34(1):e14610. PubMed ID: 33258534.
    Abstract:
    Vitiligo is associated with oxidant stress and α-lipoic acid (ALA) is an antioxidative agent. To evaluate the efficacy and safety of oral ALA in combination with NB-UVB phototherapy on nonsegmental stable vitiligo. The prospective, multi-center, parallel controlled, double-blind randomized clinical trial was conducted from 2012 to 2014, in seven comprehensive tertiary hospitals in China. The patients were randomized into oral ALA group or placebo group at a dose of 300 mg daily for 6 months. All of them received NB-UVB phototherapy three times weekly. The repigmentation rate was evaluated by 4-point grading scale of improvement: >98%, 50-98%, 10-49%, <10%. A total of 133 patients were enrolled in the study, including 72 cases in treatment group and 61 cases in control group. In treatment group, 2.04% (1/49) patients achieved ≥50% improvement at 1-month after enrollment (M1), and the percentage of patients increased to 8.51% (4/47), 14.0% (6/43), and 37.8% (14/37) at M2, M3, and M6, respectively. In control group, the percentages were similar at all timepoints. No significant difference was seen between the two groups (P > .05). For elder patients, younger patients, male or female, no significant differences were found between treatment group and control group at all timepoints. ALA did not show additional benefit to NB-UVB therapy in the treatment of nonsegmental stable vitiligo. More studies should be done to identify other protocols of ALA or other types of antioxidants for stable vitiligo.
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