Related Experiment Video
Updated: Jun 23, 2026
08:46
Implementation of In Vitro Drug Resistance Assays: Maximizing the Potential for Uncovering Clinically Relevant Resistance Mechanisms
Published on: December 9, 2015
Predicting potentially functional SNPs in drug-response genes
Grace S Y Pang1, Jingbo Wang, Zihua Wang
1Division of Medical Sciences, National Cancer Center, Level 6, Lab 5, 11 Hospital Drive, Singapore 169610, Singapore.
Pharmacogenomics
|April 21, 2009
Summary
Identifying functional single nucleotide polymorphisms (SNPs) is crucial for understanding drug response variations. In silico methods offer an economical approach to filter these important SNPs for further experimental validation.
Area of Science:
- Genetics
- Pharmacogenomics
- Bioinformatics
Background:
- Single nucleotide polymorphisms (SNPs) significantly influence individual drug response.
- Over 14 million polymorphisms exist in the human genome, but not all are functional.
- Experimental validation of every SNP is impractical and costly.
Purpose of the Study:
- To address the challenge of identifying functional SNPs within the vast human genome.
- To present in silico methods as an economical and efficient approach for SNP filtering.
- To enable prioritization of SNPs for experimental drug-response studies.
Main Methods:
- Utilizing in silico (bioinformatic) approaches to analyze SNPs.
- Filtering potentially functional SNPs within drug-response genes.
- Prioritizing SNPs for subsequent experimental evaluation.
Main Results:
- In silico methods provide an economical and less labor-intensive way to identify functional SNPs.
- Bioinformatic analysis helps filter a large number of SNPs down to a manageable set.
- This approach allows for focused experimental validation of high-priority SNPs.
Conclusions:
- In silico methods are powerful tools for discovering functional SNPs relevant to drug response.
- Economical bioinformatic filtering accelerates the identification of SNPs impacting drug-response genes.
- This strategy aids researchers in prioritizing experimental studies and understanding SNP mechanisms.
Related Concept Videos
01:29Pharmacogenomics: 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...
01:27Principles 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...
01:29Pharmacogenetic 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...
01:27Pharmacogenetics 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...
01:29Pharmacogenetics 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...
01:11Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
Genetic polymorphisms in drug targets have emerged as critical determinants of interindividual variability in drug response and toxicity. Pharmacogenomic investigations increasingly focus on identifying these variations to personalize and optimize therapeutic interventions. A drug target may be a receptor, enzyme, or signaling protein involved in pharmacologic responses or disease-related pathways. While early pharmacogenetic studies focused primarily on drug metabolism, current research...