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Related Concept Videos

Pharmacogenomics: Identification of New Drug Targets01:29

Pharmacogenomics: Identification of New Drug Targets

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...
Pharmacogenetics and Pharmacogenomics: Overview01:29

Pharmacogenetics and Pharmacogenomics: Overview

Pharmacogenetics and pharmacogenomics examine how genetic factors influence an individual's response to drugs. While pharmacogenetics focuses on the impact of specific genetic variants on drug effects, pharmacogenomics takes a broader approach, studying how genetic variation across populations contributes to differences in drug responses. These fields aim to explain why individuals may experience varying levels of efficacy or adverse reactions to the same medication.Variability in drug...
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu01:29

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

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...
Pharmacogenetics of Drug Metabolism: Overview01:27

Pharmacogenetics of Drug Metabolism: Overview

Genetic polymorphism in drug metabolism is crucial to the inter-individual variability observed in drug responses. Drug metabolism primarily involves the chemical modification of drugs and other xenobiotics to enhance their elimination by increasing their polarity. Two main classes of enzymes mediate this biotransformation process: Phase I enzymes, primarily cytochrome P450s, catalyze oxidation and reduction reactions, while other enzymes, such as esterases, mediate hydrolysis, and Phase II...
Principles of Pharmacogenetics: Types of Genetic Variants01:27

Principles of Pharmacogenetics: Types of Genetic Variants

The human genome is over 99.9% identical between individuals, yet genetic differences exist at millions of bases. The human genome contains approximately 3 million variant positions per individual, many of which are heterozygous, contributing to genetic diversity and individual traits. Genetic variations include single-nucleotide polymorphisms (SNPs), insertions, deletions, and copy number variations (CNVs).SNPs, the most common variation, involve single-base changes in DNA. These can be...
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Pharmacogenetics of Phase I Enzymes: Cytochrome P450 Isozymes

Cytochrome P450 (CYP450) enzymes are a superfamily of heme-containing monooxygenases that play a pivotal role in Phase I drug metabolism by catalyzing oxidation and reduction reactions.These enzymes transform lipophilic xenobiotics into more hydrophilic metabolites, facilitating subsequent Phase II conjugation and eventual excretion. The CYP450 family is classified into families (e.g., CYP1–CYP3) and subfamilies (e.g., CYP2A, CYP2C), based on amino acid sequence homology.CYP450 isoenzymes,...

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Related Experiment Video

Updated: May 18, 2026

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry
05:53

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

Published on: June 21, 2018

Pharmacogenomics knowledge for personalized medicine.

M Whirl-Carrillo1, E M McDonagh, J M Hebert

  • 1Department of Genetics, Stanford University, Palo Alto, California, USA.

Clinical Pharmacology and Therapeutics
|September 21, 2012
PubMed
Summary
This summary is machine-generated.

The Pharmacogenomics Knowledgebase (PharmGKB) curates genetic variation data impacting drug responses. This resource aids personalized medicine by providing evidence-based gene-drug associations and dosing guidelines.

Related Experiment Videos

Last Updated: May 18, 2026

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry
05:53

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

Published on: June 21, 2018

Area of Science:

  • Pharmacogenomics
  • Genetics
  • Drug Discovery

Background:

  • Human genetic variation significantly influences individual drug responses.
  • Personalized medicine requires robust data linking genetic profiles to drug efficacy and safety.
  • Existing resources need comprehensive, curated information for clinical application.

Purpose of the Study:

  • To describe the Pharmacogenomics Knowledgebase (PharmGKB) as a comprehensive resource.
  • To highlight PharmGKB's role in disseminating clinically relevant pharmacogenomic information.
  • To emphasize the utility of PharmGKB in supporting personalized medicine initiatives.

Main Methods:

  • PharmGKB collects and curates data on human genetic variation and drug responses.
  • Information includes gene-drug associations, genotype-phenotype relationships, and dosing guidelines.
  • Curators assign evidence levels to variant-drug associations based on literature review.

Main Results:

  • PharmGKB provides a centralized repository of pharmacogenomic data.
  • It offers clinically actionable information, including annotated drug labels.
  • Evidence levels are assigned using defined criteria, ensuring data quality.

Conclusions:

  • PharmGKB is a valuable, high-quality resource for pharmacogenomic information.
  • The knowledgebase supports the implementation of personalized medicine projects.
  • It facilitates the translation of genetic insights into clinical practice.