Related Experiment Video
Updated: May 15, 2026

09:45
Detection of Copy Number Alterations Using Single Cell Sequencing
Published on: February 17, 2017
cnvHiTSeq: integrative models for high-resolution copy number variation detection and genotyping using population
Genome Biology
|December 25, 2012
Summary
This study introduces cnvHiTSeq, a new method for identifying copy number variation (CNV) using next-generation sequencing data. It improves CNV detection sensitivity and genotyping accuracy by integrating multiple data features.
Area of Science:
- Genomics
- Bioinformatics
- Computational Biology
Background:
- Next-generation sequencing (NGS) enables high-resolution copy number variation (CNV) detection.
- Existing CNV detection methods often analyze limited features from NGS data.
- A unified approach integrating multiple signatures is needed for improved CNV discovery.
Purpose of the Study:
- To develop an integrative probabilistic method for CNV discovery and genotyping.
- To leverage multiple features from a single NGS experiment for enhanced CNV analysis.
- To improve the sensitivity and accuracy of CNV detection and genotyping.
Main Methods:
- Developed cnvHiTSeq, an integrative probabilistic framework.
- Jointly analyzes multiple features from NGS data at the population level.
- Combines evidence from complementary data sources.
Main Results:
- Achieved high genotyping accuracy for copy number variations.
- Demonstrated substantial improvement in CNV detection sensitivity compared to existing methods.
- Maintained a low false discovery rate in CNV identification.
Conclusions:
- cnvHiTSeq offers a powerful, integrated approach for CNV discovery and genotyping.
- The method enhances sensitivity and accuracy by utilizing multiple data signatures.
- cnvHiTSeq represents a significant advancement in analyzing CNV from NGS data.
Related Concept Videos
Comparing Copy Number Variations and SNPs
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Next-generation Sequencing
The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.
RNA-seq
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
Single Nucleotide Polymorphisms-SNPs
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
Sanger Sequencing
DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...
