Exome Sequencing
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.
Whole-exome solutions
Explore comprehensive workflow solutions for whole-exome sequencing including world-class support from Illumina.
In addition, learn more about whole-exome sequencing for rare diseases.
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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 Research
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.
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Using Exome and RNA-Seq to Study Rare Genetic Diseases
Whole-exome and RNA sequencing prove beneficial in uncovering mutations and pathways associated with rare disease.
Read Article
Tumor Exomes Reveal New Insights into Cancer Biology
Read how researchers perform cancer WES from tumor biopsy samples to better understand the tumor onset and progression, identify biomarkers, and predict response to therapeutic interventions.
Read Customer SpotlightRecommended Whole-Exome Sequencing Workflow
Illumina offers whole-exome sequencing workflows that simplify the entire process, from exome enrichment and library preparation to sequencing, data analysis, and biological interpretation.
Library Prep
Illumina DNA Prep with Exome 2.5 Enrichment
A fast, integrated whole-exome enrichment and sequencing library preparation workflow for a wide range of applications.
Illumina Custom Enrichment Panel v2
Expand or enhance Exome coverage with a custom spike-in panel designed for your targets of interest.
Illumina Cell-Free DNA Prep with Enrichment
A highly sensitive library preparation solution to detect low-abundance mutations from cell-free DNA samples.
Illumina FFPE DNA Prep with Exome 2.5 Enrichment
A sensitive and comprehensive whole-exome sequencing solution for detecting low-frequency variants from FFPE (formalin-fixed, paraffin-embedded) samples.
Sequencing
NovaSeq X Series
Our most powerful sequencer for ultra-high-throughput projects, featuring up to 16Tb output and 26 billion single reads per flow cell.
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
Library Prep and Array Kit Selector
Determine the best kit for your needs based on project type, starting material, and method or application.
Learn more about the Library Prep and Array Kit SelectorExome Sequencing Data Analysis
Illumina DRAGEN secondary analysis was developed to address important challenges associated with analyzing NGS data for a range of applications, including exome as well as genome, transcriptome, methylome studies, and more. This software suite rapidly processes NGS data and enables tertiary analysis to drive insights. The available tools make up a highly accurate, comprehensive, and efficient solution that enables labs of all sizes and disciplines to do more with their genomic data.
Learn More About DRAGENEfficient Exome and Multiomics Data Analysis for COPD Study
Scientists discuss how DRAGEN pipelines and Illumina Connected Analytics helped them analyze exome sequencing data as well as whole-genome, transcriptome, and metagenome data for a chronic obstructive pulmonary disease (COPD) research project.
Empowering access for groundbreaking genomic discoveries
Illumina benchtop sequencing systems are making NGS technology more accessible to laboratories worldwide. Learn how these systems provide the speed, power, and flexibility to make breakthroughs in microbiology, cancer research, and more. The MiSeq i100 Series or NextSeq 1000 and NextSeq 2000 Systems can help make your NGS research goals within reach.
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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.
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Illumina DNA Prep with Exome 2.0 Plus Enrichment
A high-performance, fast, and complete whole-exome sequencing kit.
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BaseSpace Sequence Hub
Data management and simplified bioinformatics for labs getting started and for rapidly scaling next-generation sequencing (NGS) operations.
Learn MoreRelated 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.
Genetics of Neurological Disorders
Researchers use exome sequencing, arrays, and other methods to identify gene variants linked to intellectual disability.
Germline CNV Analysis
Download this Application Note to see a streamlined exome sequencing workflow for germline CNV analysis, from library preparation to insights using Illumina DNA Prep with Exome 2.5 Enrichment.
NGS is more accessible than ever with the NextSeq 2000 System
In this interview, Dr. Irina Iordanescu, the coordinator of the Regina Maria Genetic Center Laboratory, explains how NGS enhanced assays such as whole-exome sequencing and targeted sequencing panels for pediatric genetic disease testing and oncology. Read more to discover how she used NGS to speed up and expand sample processing while reducing costs.
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