title: Superoxide Dismutase Gene (SOD1, SOD2, and SOD3) Polymorphisms and Antituberculosis Drug-induced Hepatitis.
abstract: OBJECTIVE
  Drug-induced liver injury (DILI) is a serious issue often leading to discontinuation of the proper regimen of antituberculosis drugs (ATD). Previous studies have suggested that antioxidant enzymes play an important role in DILI.
  
  
  METHODS
  We explored whether polymorphisms in superoxide dismutase genes, including Cu/Zn superoxide dismutase (SOD1), manganese superoxide dismutase (SOD2) and extracellular superoxide dismutase (SOD3) are associated with ATD-induced hepatitis. Genotype distributions of four single nucleotide polymorphisms (SNPs) in three genes (rs2070424, SOD1; rs4880, SOD2; rs2536512, and rs1799895, SOD3) were compared between 84 patients with ATD-induced hepatitis and 237 patients tolerant to ATD.
  
  
  RESULTS
  Intron SNP rs2070424 of SOD1 showed a significant association with ATD-induced hepatitis. The frequency of genotypes carrying minor alleles (GA or GG) was significantly higher in the case group than that of controls (P=0.019, OR=2.26, 95% CI 1.14-4.49). For the other SNPs of SOD2 and SOD3, there were no differences in genotype frequencies between ATD-induced hepatitis and ATD-tolerant controls.
  
  
  CONCLUSIONS
  These findings suggest that rs2070424 of SOD1 is significantly associated with ATD-induced hepatitis. This genetic variant may be a risk factor for ATD-induced hepatitis in individuals from Korea.
authors.affiliation: Department of Internal Medicine, Eulji University School of Medicine, Seoul, Korea.
authors.forename: Sang-Hoon
authors.initials: SH
authors.lastname: Kim
authors.affiliation: Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea.
authors.forename: Sang-Heon
authors.initials: SH
authors.lastname: Kim
authors.affiliation: Department of Internal Medicine, Eulji University School of Medicine, Seoul, Korea.
authors.forename: Jae-Hyoung
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Internal Medicine, Eulji University School of Medicine, Seoul, Korea.
authors.forename: Byoung-Hoon
authors.initials: BH
authors.lastname: Lee
authors.affiliation: Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea.
authors.forename: Ho Joo
authors.initials: HJ
authors.lastname: Yoon
authors.affiliation: Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea.
authors.forename: Dong Ho
authors.initials: DH
authors.lastname: Shin
authors.affiliation: Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea.
authors.forename: Sung Soo
authors.initials: SS
authors.lastname: Park
authors.affiliation: Department of Internal Medicine, Dankook University College of Medicine, Cheonan, Korea.
authors.forename: Suk Bin
authors.initials: SB
authors.lastname: Jang
authors.affiliation: Department of Internal Medicine, Dankook University College of Medicine, Cheonan, Korea.
authors.forename: Jae-Seuk
authors.initials: JS
authors.lastname: Park
authors.affiliation: Department of Internal Medicine, Dankook University College of Medicine, Cheonan, Korea.
authors.forename: Young-Koo
authors.initials: YK
authors.lastname: Jee
keywords: Antituberculosis drugs; hepatitis; polymorphism; superoxide dismutase