Journal
JOURNAL OF INFECTIOUS DISEASES
Volume 193, Issue 10, Pages 1371-1374Publisher
OXFORD UNIV PRESS INC
DOI: 10.1086/503436
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Transforming growth factor ( TGF)-beta 1 suppresses the proliferation and cytotoxicity of natural killer ( NK) cells, which play critical roles in resolving hepatitis C virus ( HCV) infection, especially during the acute phase. We examined 230 anti-HCV antibody-positive subjects for HCV RNA and the -509T/C genotype in the TGF-beta 1 gene promoter. The -509CC genotype and the -509C allele were significantly associated with higher HCV clearance rates (P = .01) and with lower transcriptional activity. The genetic effect remained significant even after adjustment for a history of transfusion. Low TGF-beta 1 producers might have less suppression of NK cells and be more likely to resolve HCV infection.
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