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Genome-wide Association Study for Alcohol-related Cirrhosis Identifies Risk Loci in MARC1 and HNRNPUL1

  • Hamish Innes (Lead / Corresponding author)
  • , Stephan Buch
  • , Sharon Hutchinson
  • , Indra Neil Guha
  • , Joanne R. Morling
  • , Elleanor Barnes
  • , Will Irving
  • , Ewan Forrest
  • , Vincent Pedergnan
  • , David Goldberg
  • , Esther Aspinall
  • , Stephan Barclay
  • , Peter Hayes
  • , John Dillon
  • , Hans Dieter Nischalke
  • , Philipp Lutz
  • , Ulrich Spengler
  • , Janett Fischer
  • , Thomas Berg
  • , Mario Brosch
  • Florian Eyer, Christian Datz, Sebastian Mueller, Teresa Peccerella, Pierre Deltenre, Astrid Marot, Michael Soyka, Andrew McQuillin, Marsha Y. Morgan, Jochen Hampe, Felix Stickel

    Research output: Contribution to journalArticlepeer-review

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    Abstract

    Background & Aims: Little is known about genetic factors that affect development of alcohol-related cirrhosis. We performed a genome-wide association study (GWAS) of samples from the United Kingdom Biobank (UKB) to identify polymorphisms associated with risk of alcohol-related liver disease.

    Methods: We performed a GWAS of 35,839 participants in the UKB with high intake of alcohol against markers of hepatic fibrosis (FIB-4, APRI and Forns index scores) and hepatocellular injury (levels of aminotransferases). Loci identified in the discovery analysis were tested for their association with alcohol-related cirrhosis in 3 separate European cohorts (phase 1 validation cohort; n=2545). Variants associated with alcohol-related cirrhosis in the validation at a false-discovery rate of less than 20% were then directly genotyped in 2 additional European validation cohorts (phase 2 validation, n=2068).

    Results: In the GWAS of the discovery cohort, we identified 50 independent risk loci with genome-wide significance (P<5 x 10-8). Nine of these loci were significantly associated with alcohol-related cirrhosis in the phase 1 validation cohort; 6 of these 9 loci were significantly associated with alcohol-related cirrhosis in phase 2 validation cohort, at a false discovery rate below 5%. The loci included variants in the mitochondrial amidoxime reducing component 1 gene (MARC1) and the heterogeneous nuclear ribonucleoprotein U like 1 gene (HNRNPUL1). After we adjusted for age, sex, body mass index, and type-2 diabetes in the phase 2 validation cohort, the minor A allele of MARC1:rs2642438 was associated with reduced risk of alcohol-related cirrhosis (adjusted odds ratio, 0.76; P=.0027); conversely the minor C allele of HNRNPUL1:rs15052 was associated with an increased risk of alcohol-related cirrhosis (adjusted odds ratio, 1.30; P=.020).

    Conclusions: In a GWAS of samples from the UKB, we identified and validated (in 5 European cohorts) single-nucleotide polymorphisms that affect risk of alcohol-related cirrhosis in opposite directions: the minor A allele in MARC1:rs2642438 decreases risk whereas the minor C allele in HNRNPUL1:rs15052 increases risk.

    Original languageEnglish
    Pages (from-to)1276-1298.e7
    Number of pages21
    JournalGastroenterology
    Volume159
    Issue number4
    Early online date16 Jun 2020
    DOIs
    Publication statusPublished - Oct 2020

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 3 - Good Health and Well-being
      SDG 3 Good Health and Well-being

    Keywords

    • SNP
    • biomarker
    • hepatic fibrogenesis
    • prognostic factor

    ASJC Scopus subject areas

    • Hepatology
    • Gastroenterology

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