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Updated: May 17, 2026
09:45
Detection of Copy Number Alterations Using Single Cell Sequencing
Published on: February 17, 2017
COPS: a sensitive and accurate tool for detecting somatic Copy Number Alterations using short-read sequence data from
Neeraja M Krishnan1, Prakhar Gaur, Rakshit Chaudhary
1Ganit Labs, Bio-IT Centre, Institute of Bioinformatics and Applied Biotechnology, Bangalore, India.
Plos One
|October 31, 2012
Summary
We developed COPS, a sensitive tool for detecting cancer-specific copy number alterations (SCNAs) using paired sequencing data. COPS outperforms existing methods in accuracy and sensitivity for identifying these crucial cancer genome variations.
Area of Science:
- Genomics
- Cancer Research
- Bioinformatics
Background:
- Copy number alterations (CNAs) are significant genetic variations in cancer genomes.
- Identifying cancer-specific somatic copy number alterations (SCNAs) is crucial for understanding disease association.
Purpose of the Study:
- To develop and validate COPS, an accurate and sensitive tool for detecting SCNAs using paired samples.
- To compare COPS performance against existing SCNA detection tools.
Main Methods:
- Devised COPS (COpy number using Paired Samples) tool for SCNA detection.
- Tested COPS with simulated and real tumor:normal paired samples.
- Evaluated sensitivity, specificity, and size accuracy across various sequencing parameters.
Main Results:
- COPS demonstrated superior performance compared to other SCNA detection tools.
- High accuracy was achieved across different read lengths and depths.
- An integrated boundary segmentation tool further improved SCNA boundary detection accuracy.
Conclusions:
- COPS is an accurate, sensitive, and user-friendly tool for detecting cancer-specific SCNAs from short-read sequencing data.
- The tool is applicable to any disease requiring analysis of paired normal and disease samples.
- COPS offers improved specificity for SCNA boundaries through its segmentation module.
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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%...
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