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Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
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Immunogenetics in primary sclerosing cholangitis.

Brian K Chung1, Gideon M Hirschfield

  • 1aCentre for Liver Research and NIHR Birmingham Liver Biomedical Research Unit, Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UKbNorwegian PSC Research Center, Department of Transplantation Medicine, Division of Surgery, Inflammatory Medicine and Transplantation, Oslo University Hospital RikshospitaletcInstitute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, NorwaydBirmingham Health Partners, Institute of Translational Medicine, University Hospitals Birmingham, Birmingham, UK.

Current Opinion in Gastroenterology
|February 2, 2017
PubMed
Summary
This summary is machine-generated.

Genetic studies reveal 23 susceptibility loci for primary sclerosing cholangitis and inflammatory bowel disease (PSC-IBD), mostly linked to immune function. Environmental factors play a significant role in PSC-IBD development.

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Area of Science:

  • Hepatology and Immunology
  • Gastroenterology

Background:

  • Primary sclerosing cholangitis (PSC) is a progressive liver disease often co-occurring with inflammatory bowel disease (IBD), termed PSC-IBD.
  • Understanding the genetic underpinnings of PSC-IBD is crucial for differentiating it as a unique clinical entity.

Purpose of the Study:

  • To summarize the current understanding of PSC-IBD genetics.
  • To highlight recent genetic findings that distinguish PSC-IBD from other immune-mediated disorders.

Main Methods:

  • Review of genome-wide association studies (GWAS) and genetic susceptibility loci for PSC-IBD.
  • Analysis of identified genetic variants and their association with immune function and liver-related pathways.

Main Results:

  • Twenty-three susceptibility loci for PSC-IBD have been identified through genome-wide studies.
  • The majority of identified loci are associated with immune system regulation, including the human leukocyte antigen complex.
  • Genetic factors account for less than 10% of PSC-IBD liability, underscoring the importance of environmental influences.

Conclusions:

  • Genetic evidence supports PSC-IBD as a distinct disease entity, aligning with clinical observations.
  • Immune-related genes at risk loci likely impact immune function, tolerance, and cell trafficking.
  • Further research is needed to elucidate the interplay between genetic predisposition and environmental factors in PSC-IBD pathogenesis.