Abstract
Objective The aim was to investigate the association between endothelin-1 (ET-1) gene polymorphism and vitiligo occurrence or increased vitiligo risk in Egyptian population. Background ET-1 is a keratinocyte-derived cytokine, which also has been defined as a strong mitogen and melanogen for human melanocytes and a potent stimulant of melanocyte proliferation, melanogenesis, and migration, implying a link with vitiligo. Patients and methods This study was conducted on 60 female patients with vitiligo. Their ages ranged from 6 to 70 years Overall, 54 cases presented with nonsegmental vitiligo and six cases presented with segmental vitiligo. Moreover, 40 age-matched and sex-matched apparently healthy volunteers with no past, present, or family history of vitiligo were included as a control group. Every case and control underwent detection of genotyping of ET-1 by restriction fragment length polymorphism-PCR. Results AA genotype of ET-1 was significantly associated with cases. It increases the risk of vitiligo by 15.9 folds. GA genotype was prevalent in 36.7% of cases. It increases the risk of vitiligo by 3.3 folds. Conclusion There is an association between ET-1 gene polymorphism and vitiligo occurrence.
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