Related Experiment Video
Updated: Jun 25, 2025

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Gene polymorphism as a cause of hemorrhagic complications in patients with non-valvular atrial fibrillation treated
Ayan Abdrakhmanov1,2,3, Aizhana Shaimerdinova2, Zhanasyl Suleimen4
1National Research Cardiac Surgery Center, Turan Ave 38, Astana 010000, Kazakhstan.
Genetic variations influence how patients respond to direct oral anticoagulants (DOACs). Understanding these pharmacogenetics can help personalize anticoagulant therapy, improving safety and reducing bleeding risks in atrial fibrillation patients.
Area of Science:
- Pharmacogenomics
- Cardiology
- Drug Metabolism
Background:
- Atrial fibrillation (AF) is a common arrhythmia linked to high stroke risk.
- Direct oral anticoagulants (DOACs) like dabigatran, rivaroxaban, apixaban, and edoxaban are crucial for stroke prevention in AF.
- Individual responses to DOACs can vary, necessitating research into genetic influences.
Purpose of the Study:
- To review and analyze scientific literature on gene polymorphisms affecting DOAC metabolism and efficacy.
- To explore the impact of pharmacogenetics on DOAC pharmacokinetics, pharmacodynamics, and clinical outcomes.
- To identify potential genetic markers for optimizing DOAC therapy and minimizing hemorrhagic complications.
Main Methods:
- Systematic literature search of PubMed, Cochrane, Google Scholar, and CyberLeninka databases.
- Inclusion of full-text articles, meta-analyses, observational studies, and studies on single-nucleotide polymorphisms (SNPs) and DOACs.
- Focus on studies published in English and Russian over the last 10 years, involving patients aged 18-75.
Main Results:
- Identified various gene polymorphisms influencing DOAC metabolism and response.
- Pharmacogenomic data indicates differences in how genetic variations affect DOACs.
- Current data highlights the potential for personalized DOAC therapy but is limited by the lack of large-scale studies.
Conclusions:
- Gene polymorphisms play a significant role in DOAC efficacy and safety.
- Personalized anticoagulant therapy based on patient genotyping may reduce hemorrhagic risks.
- Large-scale population studies are essential to establish genotype-guided DOAC dosing strategies.
Related Concept Videos
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Disorders of Hemostasis
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
Extrinsic and Intrinsic Pathways of Hemostasis
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which...
Factors Affecting Protein-Drug Binding: Drug Interactions
Displacement interactions can have varying outcomes, ranging from toxicity to virtually...

