Many studies have previously confirmed high TNFalpha (tumor necrosis factor-alpha) production in sarcoidosis, and have shown that TNFalpha plays an important role in granuloma formation. We investigated TNFA and TNFB (lymphotoxin-alpha) gene polymorphisms in 26 cardiac sarcoidosis patients of Japanese origin. These studies revealed a significant increase in the more uncommon TNFA2 allele in the patient group, suggesting that the TNFA gene controls the genetic susceptibility to cardiac sarcoidosis.
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Takashige et al. (1999) studied this question.
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