title: Associations between serum lipids and hepatitis C antiviral treatment efficacy.
abstract: Approximately one half of patients who undergo antiviral therapy for chronic hepatitis C virus (HCV) genotype 1 infection do not respond to treatment. African Americans (AAs) are less responsive to treatment than Caucasian Americans (CAs), but the reasons for this disparity are largely unknown. Recent studies suggest that serum lipids may be associated with treatment response. The aims of this study were to evaluate baseline and changes in serum lipids during therapy, determine whether serum lipids are associated with virological response, and assess whether these measures explain the racial difference in efficacy. The study participants were from Virahep-C, a prospective study of treatment-naïve patients with genotype 1 HCV infection who received peginterferon (PEG-IN) alfa-2a plus ribavirin therapy for up to 48 weeks. Fasting serum lipids were analyzed at baseline and during and after therapy in 160 AAs and 170 CAs. A relative risk (RR) model was employed to evaluate characteristics associated with sustained virological response (SVR). Antiviral therapy was associated with changes in serum lipids during and after antiviral therapy, with the changes differing by race and the amount of PEG-IFN taken. Baseline lipid measures independently associated with higher rates of SVR were lower triglyceride and higher low-density lipoprotein cholesterol, with an interaction between high-density lipoprotein cholesterol (HDLc) and gender. Lipid measures did not contribute significantly to an explanation of the racial difference in SVR.
  
  
  CONCLUSIONS
  Serum lipids are associated with SVR, although these paramaters did not explain the racial difference in treatment response. The results of this study are compatible with proposed biological mechanisms of HCV entry, replication, and secretion, and may underscore new potential therapeutic targets for HCV eradication.
authors.affiliation: Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA. dramcharran@gmail.com
authors.forename: Darmendra
authors.initials: D
authors.lastname: Ramcharran
authors.forename: Abdus S
authors.initials: AS
authors.lastname: Wahed
authors.forename: Hari S
authors.initials: HS
authors.lastname: Conjeevaram
authors.forename: Rhobert W
authors.initials: RW
authors.lastname: Evans
authors.forename: Tianyi
authors.initials: T
authors.lastname: Wang
authors.forename: Steven H
authors.initials: SH
authors.lastname: Belle
authors.forename: Leland J
authors.initials: LJ
authors.lastname: Yee
mesh_terms: D000328:Adult; D001741:Black or African American; D000998:Antiviral Agents / Q000627:therapeutic use*; D008076:Cholesterol, HDL / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D015331:Cohort Studies; D004359:Drug Therapy, Combination; D005260:Female; D005838:Genotype; D016174:Hepacivirus / Q000235:genetics; D019698:Hepatitis C, Chronic / Q000097:blood / Q000188:drug therapy* / Q000208:ethnology; D006801:Humans; D000077190:Interferon alpha-2; D016898:Interferon-alpha / Q000627:therapeutic use*; D008055:Lipids / Q000097:blood*; D008297:Male; D008875:Middle Aged; D011092:Polyethylene Glycols / Q000627:therapeutic use*; D011446:Prospective Studies; D011994:Recombinant Proteins; D012189:Retrospective Studies; D012254:Ribavirin / Q000627:therapeutic use*; D016896:Treatment Outcome; D014280:Triglycerides / Q000097:blood; D044465:White People
chemical_list: D000998:Antiviral Agents; D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D000077190:Interferon alpha-2; D016898:Interferon-alpha; D008055:Lipids; D011994:Recombinant Proteins; D014280:Triglycerides; D011092:Polyethylene Glycols; D012254:Ribavirin; C100416:peginterferon alfa-2a