Genetic polymorphisms associated with fatty liver disease and fibrosis in HIV positive patients receiving combined antiretroviral therapy (cART)

PLoS One. 2017 Jun 8;12(6):e0178685. doi: 10.1371/journal.pone.0178685. eCollection 2017.

Abstract

Hepatic steatosis can occur with any antiretroviral therapy (cART). Although single nucleotide polymorphisms (SNPs) have been identified to predispose to alcoholic and non-alcoholic fatty liver disease, their role for treatment-associated steatosis in HIV-positive patients remains unclear. We determined the frequency of PNPLA3 (rs738409), CSPG3/NCAN (rs2228603), GCKR (rs780094), PPP1R3B (rs4240624), TM6SF (rs8542926), LYPLAL1 (rs12137855) and MBOAT7 (rs626283) by RT-PCR in 117 HIV-positive patients on cART and stratified participants based on their "controlled attenuation parameter" (CAP) into probable (CAP: 215-300 dB/m) and definite (CAP >300 dB/m) hepatic steatosis. We analyzed CAP values and routine metabolic parameters according to the allele frequencies. Sixty-five (55.6%) and 13 (11.1%) patients were allocated to probable and definite steatosis. CAP values (p = 0.012) and serum triglycerides (p = 0.043) were increased in carriers of the GCKR (rs780094) A allele. Cox logistic regression identified triglycerides (p = 0.006), bilirubin (p = 0.021) and BMI (p = 0.068), but not the genetic parameters as risk factors for the occurrence of hepatic steatosis. Taken together, according to the limited sample size, this exploratory study generates the hypothesis that genetic polymorphisms seem to exert minor effects on the risk for fatty liver disease in HIV-positive patients on cART. Nevertheless, SNPs may modify metabolic complications once metabolic abnormalities have developed. Hence, subsequent analysis of a larger cohort is needed.

MeSH terms

  • Acyltransferases / genetics
  • Adaptor Proteins, Signal Transducing / genetics
  • Adult
  • Aged
  • Aged, 80 and over
  • Anti-Retroviral Agents / therapeutic use
  • Bilirubin / blood
  • Body Mass Index
  • Chondroitin Sulfate Proteoglycans / genetics
  • Fatty Liver / genetics*
  • Female
  • Genetic Predisposition to Disease / genetics
  • HIV Seropositivity / drug therapy
  • HIV Seropositivity / genetics
  • Humans
  • Lipase / genetics
  • Liver Cirrhosis / genetics*
  • Lysophospholipase / genetics
  • Male
  • Membrane Proteins / genetics
  • Middle Aged
  • Polymorphism, Single Nucleotide / genetics
  • Proportional Hazards Models
  • Protein Phosphatase 1 / genetics
  • Reverse Transcriptase Polymerase Chain Reaction
  • Triglycerides / blood
  • Young Adult

Substances

  • Adaptor Proteins, Signal Transducing
  • Anti-Retroviral Agents
  • CSPG4 protein, human
  • Chondroitin Sulfate Proteoglycans
  • GCKR protein, human
  • Membrane Proteins
  • Triglycerides
  • Acyltransferases
  • MBOAT7 protein, human
  • Lipase
  • adiponutrin, human
  • Lysophospholipase
  • LYPLAL1 protein, human
  • PPP1R3B protein, human
  • Protein Phosphatase 1
  • Bilirubin

Grants and funding

The study was supported by a grant from the German center for infection research (DZIF) to US and JKR. The funding sponsor had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript.