What is Exome Sequencing?
Whole-exome sequencing is a widely used next-generation sequencing (NGS) method that involves sequencing the protein-coding regions of the genome. The human exome represents less than 2% of the genome, but contains ~85% of known disease-related variants,1 making this method a cost-effective alternative to whole-genome sequencing.
Exome sequencing using exome enrichment can efficiently identify coding variants across a broad range of applications, including population genetics, genetic disease, and cancer studies.
Whole-Exome Sequencing in 3 Simple Steps
Investigate the protein-coding regions of the genome with this comprehensive workflow solution.
Advantages of Exome Sequencing
- Identifies variants across a wide range of applications
- Achieves comprehensive coverage of coding regions
- Provides a cost-effective alternative to whole-genome sequencing (4–5 Gb of sequencing per exome compared to ~90 Gb per whole human genome)
- Produces a smaller, more manageable data set for faster, easier data analysis compared to whole-genome approaches
Whole-Exome vs. Whole-Genome Sequencing
Explore the benefits of both approaches to understand which method is best for your research.
Efficient Analysis of Coding Regions
Exome sequencing is a cost-effective approach when whole-genome sequencing is not practical or necessary. Sequencing only the coding regions of the genome enables researchers to focus their resources on the genes most likely to affect phenotype, and offers an accessible combination of turnaround time and price.
Exome sequencing detects variants in coding exons, with the capability to expand targeted content to include untranslated regions (UTRs) and microRNA for a more comprehensive view of gene regulation. DNA libraries can be prepared in as little as 1 day and require only 4–5 Gb of sequencing per exome.
Featured Exome Sequencing Articles
Sequencing Thousands of Samples to Gain Insights into Novel Variants
Regeneron Genetics Center researchers perform exome sequencing analysis on patient-consented data sets to identify relevant genetic associations.
Read Article
National Exome Sequencing Program
A landmark NGS study identifying rare disease variants in infants led to a national clinical exome sequencing program in Singapore.
Read Article
NGS Proves Invaluable for Biomarker Discovery
Researchers use exome sequencing, RNA sequencing, and other NGS methods in their search for cancer-associated gene expression profiles.
Read ArticleRecommended Whole-Exome Sequencing Workflow
Library Prep
Illumina DNA Prep with Exome Enrichment
A fast, integrated whole-exome enrichment and sequencing library preparation workflow for a wide range of applications.
Sequencing
NovaSeq 6000 System
Scalable throughput and flexibility for virtually any genome, sequencing method, and scale of project.
Data Analysis
DRAGEN Enrichment App
Push-button alignment, followed by variant calling of Illumina exomes to rapidly identify disease-associated variants.
Mean Coverage by Targeted Region
Variant Summary
Exome Sequencing Data Analysis
The DRAGEN Bio-IT Platform provides accurate, ultra-rapid analysis of exome sequencing data and other NGS data across a broad range of applications.
Learn More
Comprehensive Whole-Exome Sequencing Workflow
Illumina sequencing by synthesis (SBS) chemistry is the most widely adopted next-generation sequencing (NGS) technology, generating approximately 90% of global sequencing data.*
Illumina offers whole-exome sequencing workflows that simplify the entire process, from exome enrichment and library preparation to sequencing, data analysis, and biological interpretation.
Click on the below to view products for each workflow step.
Illumina DNA Prep with Exome Enrichment
A fast, integrated whole-exome enrichment and sequencing library preparation workflow for a wide range of applications.
TruSeq DNA ExomeCost-effective library preparation and exome enrichment solution that delivers exceptional target coverage over a broad range of read depths.
Nextera DNA ExomeFast library preparation and exome enrichment that accommodates low input amounts.
AmpliSeq for Illumina Exome Panel
Targeted research panel for sequencing the protein-coding regions of the genome.
TruSight One Sequencing PanelsComprehensive panels targeting disease-associated regions of the exome with high analytical sensitivity and specificity.
Library Prep Kit SelectorDetermine the best kit for your needs based on project type, starting material, and method or application.
MiSeq System
Focused power to sequence targeted regions or 1 human exome per run.
NextSeq 1000 & 2000 SystemsGroundbreaking benchtop sequencers allow you to explore new discoveries across a variety of current and emerging applications, with higher efficiency and fewer restraints.
NovaSeq 6000 SystemScalable throughput and flexibility for virtually any genome, sequencing method, and scale of project.
Platform Comparison Tool
Compare sequencing platforms and identify the best system for your lab and applications.
Sequencing ReagentsFind kits that include sequencing reagents, flow cells, and/or buffers tailored to each Illumina sequencing system.
BaseSpace Enrichment App
Performs targeted resequencing using fast and accurate Isaac algorithms for alignment and variant calling.
BaseSpace Variant InterpreterLeverages leading annotation databases and a powerful filtering interface for rapid identification of disease-associated variants.
BaseSpace Integrative Genomics Viewer AppAssociates single gene or list of genes with annotation data for pathways, diseases, tissues, and small molecules.
BaseSpace Sequence Hub
The Illumina genomics computing environment for NGS data analysis and management.
BaseSpace Correlation EngineA growing library of curated genomic data to support researchers in identifying disease mechanisms, drug targets, and biomarkers.
Illumina DRAGEN Bio-IT PlatformThe Illumina DRAGEN (Dynamic Read Analysis for GENomics) Bio-IT Platform provides ultra-rapid secondary analysis of NGS data.
Featured Products
NextSeq 1000 & 2000 Systems
Groundbreaking benchtop sequencers allow you to explore new discoveries across a variety of current and emerging applications, with higher efficiency and fewer restraints.
Learn More
BaseSpace Sequence Hub
Data management and simplified bioinformatics for labs getting started and for rapidly scaling next-generation sequencing (NGS) operations.
Learn More
Using Exome and RNA Sequencing to Study Rare Undiagnosed Genetic Diseases
Whole-exome and transcriptome sequencing prove beneficial in uncovering mutations and pathways associated with rare disease.
Read InterviewRelated Solutions
Choosing an NGS Company
Seek out a best-in-class next-generation sequencing company with user-friendly bioinformatics tools and industry-leading support and service. See the evidence.
Cancer Exome Analysis
This method provides useful information about coding mutations associated with tumor progression. By sequencing less than 2% of the genome, it is possible to sequence to higher depth more economically. Learn more about cancer exome sequencing.
Complex Disease Genomics
Whole-exome sequencing is a common approach to finding causal variants in cases of complex disorders. Learn more about complex disease research.
RNA Exome Capture Sequencing
Achieve cost-effective, accurate, and sensitive RNA exome analysis of even difficult samples without sacrificing gene fusion discovery power. Learn more about RNA exome capture sequencing.
Rare Disease Variant Analysis
NGS-based exome analysis can help scientists uncover variants linked to rare and undiagnosed disorders. Learn more about rare disease genomics.
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Additional Resources
Genetic Contributions of Cognitive Control
Exome sequencing helps researchers identify variants for an array designed for ADHD, autism, and schizophrenia studies.
DNA Sequencing Data Analysis
Explore user-friendly tools for intuitive analysis of DNA sequencing data.
Whole-Exome Sequencing of FFPE Samples
Researchers in Italy developed a quality control method that enables them to sequence formalin-fixed, paraffin-embedded tissues.
Genetics of Neurological Disorders
Researchers use exome sequencing, arrays, and other methods to identify gene variants linked to intellectual disability.
Reference
- van Dijk EL, Auger H, Jaszczyszyn Y, Thermes C. Ten years of next-generation sequencing technology. Trends Genet. 2014;30:418-426.
*Data calculations on file. Illumina, Inc., 2015