Warfarin pharmacogenetics.

N Engl J Med

Published: June 2009

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Warfarin is the most widely used oral anticoagulant in clinical practice. The cytochrome P450 2C9 (CYP2C9), vitamin K epoxide reductase complex 1 (VKORC1), and cytochrome P450 4F2 (CYP4F2) genotypes are associated with warfarin dose requirements in China. Accurate genotyping is vital for obtaining reliable genotype-guided warfarin dosing information.

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Adverse drug responses (ADRs) result in over 7,000 deaths annually. Pharmacogenomic studies have shown that many ADRs are partially attributable to genetics. However, emerging data suggest that epigenetic mechanisms, such as DNA methylation (DNAm) also contribute to this variance.

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Characterizing the genetic architecture of drug response using gene-context interaction methods.

Cell Genom

December 2024

Bioinformatics Interdepartmental Program, University of California Los Angeles, Los Angeles, CA 90095, USA; Department of Neurology, University of California Los Angeles, Los Angeles, CA 90095, USA; Department of Computational Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA; Department of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA. Electronic address:

Identifying factors that affect treatment response is a central objective of clinical research, yet the role of common genetic variation remains largely unknown. Here, we develop a framework to study the genetic architecture of response to commonly prescribed drugs in large biobanks. We quantify treatment response heritability for statins, metformin, warfarin, and methotrexate in the UK Biobank.

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Introduction: Genomic variations among individuals can greatly affect their responses to different medications. Pharmacogenomics is the area of study that aims to understand the relationship between these various genetic variations and subsequent drug responses. Many medications used to optimize cardiovascular health are affected by these genetic variants and these relationships can subsequently impact dosing strategies in patients.

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Article Synopsis
  • Pharmacogenomics is gaining traction in South Asia, particularly in Sri Lanka, aiming to enhance drug therapies and minimize side effects for patients.
  • A comprehensive review analyzed research in Sri Lanka, where studies were classified into categories like clinical correlational, descriptive, and novel assay development; 11 articles and 8 theses were reviewed.
  • While progress has been made, additional clinical studies and a wider scope of genomic research are necessary, alongside efforts to address challenges like funding and public awareness, to successfully implement personalized medicine in the region.
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