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Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu

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Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...

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Updated: Jun 9, 2026

Implementation of In Vitro Drug Resistance Assays: Maximizing the Potential for Uncovering Clinically Relevant Resistance Mechanisms

Implementation of In Vitro Drug Resistance Assays: Maximizing the Potential for Uncovering Clinically Relevant Resistance Mechanisms

Published on: December 9, 2015

Clopidogrel resistance: what's new?

Thomas Cuisset, Guillaume Cayla, Johanne Silvain

Archives of Cardiovascular Diseases

|August 31, 2010

Summary

Clopidogrel resistance, influenced by various factors, impacts patient outcomes. Tailored antiplatelet therapy aims to personalize treatment, potentially improving results in acute coronary syndromes.

Area of Science:

Pharmacology and Clinical Medicine
Cardiovascular Research
Translational Medicine

Background:

Clopidogrel resistance is a recognized phenomenon with significant clinical implications.
Studies have identified complex mechanisms contributing to variable clopidogrel response, including drug interactions, genetic variations, and patient-specific factors.

Discussion:

Variable clopidogrel response is clinically relevant, correlating with increased ischemic risk in non-responders and bleeding risk in hyper-responders.
Strategies to overcome clopidogrel resistance are under investigation, with tailored antiplatelet therapy showing promise in smaller studies.

Key Insights:

Understanding clopidogrel resistance mechanisms is crucial for optimizing antiplatelet therapy.
Personalized treatment strategies based on individual patient response are essential for improving outcomes.

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Microfluidics in Assessing Platelet Function

Microfluidics in Assessing Platelet Function

Published on: November 8, 2024

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Last Updated: Jun 9, 2026

Implementation of In Vitro Drug Resistance Assays: Maximizing the Potential for Uncovering Clinically Relevant Resistance Mechanisms

Implementation of In Vitro Drug Resistance Assays: Maximizing the Potential for Uncovering Clinically Relevant Resistance Mechanisms

Published on: December 9, 2015

Microfluidics in Assessing Platelet Function

Microfluidics in Assessing Platelet Function

Published on: November 8, 2024

Outlook:

Future antiplatelet therapy, especially for acute coronary syndromes, will likely involve more potent drugs and individualized approaches.
Platelet function and genetic testing may guide tailored antiplatelet strategies, aiming for improved patient outcomes.