title: Variations in DEPDC5 gene and its association with chronic hepatitis C virus infection in Saudi Arabia.
abstract: BACKGROUND
  Variations at DEPDC5 gene have been recently reported as genetic markers associated with hepatocellular carcinoma (HCC) progression in chronic HCV-infected patients. This study was conducted to assess the association of DEPDC5 variants with advanced liver cirrhosis and HCC development among chronic HCV-infected patients in Saudi Arabian population.
  
  
  METHODS
  Six-hundred and one HCV-infected patients were genotyped for DEPDC5 polymorphisms (rs1012068 and rs5998152), in comparison with 592 non-infected healthy control subjects. The allelic frequency and genotype distribution of both DEPDC5 polymorphisms were determined followed by haplotype frequency estimation and multiple logistic regression analysis.
  
  
  RESULTS
  The frequency of the risk alleles of both rs1012068 and rs5998152 was shown to be more in healthy control subjects than in patients (p = 0.0001, OR = 0.704, CI = 0.591-0.839; p = 0.002, OR = 0.761, CI = 0. 0.639-0.907, respectively). Also, our results revealed that GT for SNP rs1012068 (OR =1.715; 95% CI 1.132-2.597; p = 0.0104) and CT for SNP rs5998152 (OR = 1.932; 95% CI 1.276-2.925; p = 0.0017) showed significant association with development of cirrhosis compared with the GG and CC genotypes, respectively. The data also revealed that subjects with the T allele of both SNPs appeared to have a lower susceptibility to HCV-related cirrhosis/HCC than those with the G allele of rs1012068 (p = 0.038, OR = 1.353, 95 % CI 1.017-1.800) and C allele of rs5998152 (p = 0.043, OR = 1.342, 95 % CI 1.010-1.784). Haplotype analysis showed that a combination of T-T alleles of rs1012068 and rs5998152 was significantly associated with liver cirrhosis (frequency = 71.3% and p = 0.027) and with cirrhosis/HCC (frequency = 71.4% and P = 0.045). Also, multiple logistic regression analysis showed that rs5998152 (OR = 2.844, 95% CI 1.333-6.069 and p = 0.007), rs1012068 (OR = 2.793, 95% CI 1.316-5.928 and p = 0.010), age (OR = 1.029, 95% CI 1.001-1.057 and p = 0.041) and HCV genotypes (OR = 0.247, 95% CI 0.097-0.630 and p = 0.003) were independently associated with chronicity of HCV infection.
  
  
  CONCLUSIONS
  Genetic variations in DEPDC5 gene region may influence HCV-associated liver cirrhosis and/or HCC development.
authors.forename: Mashael R
authors.initials: MR
authors.lastname: Al-Anazi
authors.forename: Sabine
authors.initials: S
authors.lastname: Matou-Nasri
authors.forename: Ayman A
authors.initials: AA
authors.lastname: Abdo
authors.forename: Faisal M
authors.initials: FM
authors.lastname: Sanai
authors.forename: Mohammed Q
authors.initials: MQ
authors.lastname: Khan
authors.forename: Ali
authors.initials: A
authors.lastname: Albenmousa
authors.forename: Hamad I
authors.initials: HI
authors.lastname: Al-Ashgar
authors.forename: Nisreen Z
authors.initials: NZ
authors.lastname: Khalaf
authors.forename: Mohammed N
authors.initials: MN
authors.lastname: Al-Ahdal
authors.forename: Ahmed A
authors.initials: AA
authors.lastname: Al-Qahtani
mesh_terms: D000328:Adult; D000483:Alleles; D006528:Carcinoma, Hepatocellular / Q000150:complications / Q000235:genetics*; D018450:Disease Progression; D005260:Female; D020690:GTPase-Activating Proteins; D005819:Genetic Markers; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D005838:Genotype; D006239:Haplotypes; D019698:Hepatitis C, Chronic / Q000150:complications / Q000235:genetics*; D006801:Humans; D008103:Liver Cirrhosis / Q000150:complications / Q000235:genetics*; D008113:Liver Neoplasms / Q000150:complications / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D012097:Repressor Proteins / Q000235:genetics*; D012529:Saudi Arabia
chemical_list: C000590398:DEPDC5 protein, human; D020690:GTPase-Activating Proteins; D005819:Genetic Markers; D012097:Repressor Proteins