Abstract
Background/Aim: Alopecia areata (AA), which is characterized by hair loss, is an inflammatory autoimmune disease. Tumor necrosis factor-alpha (TNFα) is a potent proinflammatory cytokine that has a highly significant role in inflammatory and immune responses. The aim of this study is to evaluate whether there is a relationship between TNFα -238 G/A gene polymorphism and AA in the Turkish population. Methods: In this case-control study, the frequency of TNFα-238 G/A gene polymorphism and its relationship with some clinical parameters of AA patients were investigated. Seventy-eight AA patients and 78 healthy individuals were included in our study. TNFα -238 G/A polymorphism was evaluated by the PCR-RFLP method. Results: The distribution of TNFα -238 G/A genotypes was significantly different between patients and control subjects (P
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