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Title: Association of the IFNL4-ΔG Allele With Impaired Spontaneous Clearance of Hepatitis C Virus.
Authors: Aka PV,  Kuniholm MH,  Pfeiffer RM,  Wang AS,  Tang W,  Chen S,  Astemborski J,  Plankey M,  Villacres MC,  Peters MG,  Desai S,  Seaberg EC,  Edlin BR,  Strickler HD,  Thomas DL,  Prokunina-Olsson L,  Sharp GB,  O'Brien TR
Journal: J Infect Dis
Date: 2014 Feb 1
Branches: BB, IIB, LTG
PubMed ID: 23956438
PMC ID: PMC3883162
Abstract: Interferon lambda 4 protein can be generated in IFNL4-ΔG carriers but not IFNL4-TT homozygotes. We studied 890 anti-hepatitis C virus (HCV)-positive participants in the Women's Interagency HIV Study. Among blacks (n = 555), HCV was more often cleared for those with genotype IFNL4-TT/TT (32.6%; odds ratio [OR], 3.59; P = 3.3 × 10(-5)) than IFNL4-TT/ΔG (11.3%; OR, 0.95; P = .86) or IFNL4-ΔG/ΔG (11.9%; referent). Pooling these data with published results in blacks (n = 1678), ORs were 3.84 (P = 8.6 × 10(-14)) for IFNL4-TT/TT and 1.44 (P = .03) IFNL4-TT/ΔG, and the area under the curve was 0.64 for IFNL4-ΔG genotype and 0.61 for rs12979860 (IL28B). IFNL4-ΔG is strongly associated with impaired spontaneous HCV clearance.