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Analyzing Copy Number Variation with Droplet Digital PCR
Avery Davis Bell1,2,3, Christina L Usher1,2,3, Steven A McCarroll4,5,6
1Department of Genetics, Harvard Medical School, Boston, MA, USA.
Methods in Molecular Biology (Clifton, N.J.)
|May 3, 2018
Summary
Accurate copy number variation measurement is crucial for understanding genetic traits. Droplet digital PCR (ddPCR) provides a precise digital counting method for analyzing these genomic copy number variants.
Area of Science:
- Genomics
- Molecular Biology
- Biotechnology
Background:
- Genomic segments exhibit copy number variations (CNVs) within species and between normal and cancerous cells.
- Accurate measurement of CNVs is essential for genetic studies, population distribution analysis, and phenotype correlation.
Purpose of the Study:
- To describe the analysis of copy number variants using Droplet digital PCR (ddPCR).
- To review effective assay design, ddPCR performance, reaction optimization, and data interpretation for CNV analysis.
Main Methods:
- Utilizing Droplet digital PCR (ddPCR) for precise copy number measurement.
- Partitioning PCR reactions into nanoliter droplets for digital counting of genomic sequences.
- Analyzing the presence or absence of target sequences within droplets via end-point fluorescence.
Main Results:
- ddPCR enables accurate quantification of copy number variants.
- Effective assay design and reaction optimization are key to reliable ddPCR performance.
- Standardized data interpretation protocols enhance the utility of ddPCR for CNV analysis.
Conclusions:
- ddPCR is a powerful tool for accurate copy number variant analysis.
- The described methods and reviews provide a framework for effective ddPCR assay implementation.
- This approach facilitates deeper understanding of the genetic and phenotypic implications of CNVs.
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