Comparison of Interferon-Gamma (IFNG) +874 T/A single nucleotide polymorphism in hepatitis C virus infected patients and non-infected controls in Mashhad, Iran

Sina Rostami, Alireza Pasdar, Sina Gerayli, Hamed Hatami, Samaneh Sepahi, Fatemeh Nategh, Mojtaba Meshkat, Seyed Mousalreza Hoseini, Mitra Ahadi, Hamid Reza Sima, Hasan Vosughinia, Mohammad Reza Sarvghad, Abbas Esmaeelzade, Hosein Nomani, Homan Mosanan Mozafari, Fariba Rezai Talab, Mohammad Taghi Shakeri, Zahra Meshkat*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Background and Objectives: Interferon-gamma is an important cytokine, which facilitates immunity against intracellular pathogens. Several factors, including genetic variations of cytokine-producing genes have been shown to influence the progression and severity of Hepatitis C virus (HCV) infection. Methods: Between January and December 2012, 87 HCV-infected individuals and 89 individuals without HCV infection were recruited for the study of Single Nucleotide Polymorphism (SNP) at Interferon Gamma (IFNG) +874 T/A. After extraction of genomic DNA from Peripheral Blood Mononuclear Cells (PBMCs) in blood sample of the individuals, Amplification Refractory Mutation System (ARMS) polymerase chain reaction was performed to evaluate the SNP at this position. Results: The frequency of genotype TA was 62.1% in the HCV-infected group, while it was 47.2% for the control group (p=0.033). However, after adjusting for confounders (including alcohol consumption, drug addiction, transfusion, and tattoos), the genotypes at this position did not show any statistically significant association with HCV infection (adjusted P values were above 0.05). The frequency of allele A was slightly higher in patients than the controls (55.2% versus 48.3%).Carriers of A allele were more frequent in patients with HCV infection compared to the control group (55.17% in patients versus 48.31% in the control group; P=0.02). However, after adjustment for confounders, the results were no longer statistically significant (P=0.2). Conclusion: A carrier status for certain alleles and genotypes at Interferon Gamma (IFNG) +874 T/A may lead to higher susceptibility to HCV infection in a certain population.

Original languageEnglish
Pages (from-to)248-256
Number of pages9
JournalIranian Journal of Pathology
Volume12
Issue number3
Publication statusPublished - 1 Jun 2017

Keywords

  • Hepatitis C virus
  • Interferon-gamma
  • Polymorphism
  • Single nucleotide

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