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Related Concept Videos

Comparing Copy Number Variations and SNPs02:26

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%...
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The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
Single Nucleotide Polymorphisms-SNPs01:05

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,...

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Related Experiment Video

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Rare Event Detection Using Error-corrected DNA and RNA Sequencing
10:36

Rare Event Detection Using Error-corrected DNA and RNA Sequencing

Published on: August 3, 2018

Evaluating the accuracy of a functional SNP annotation system.

Terry H Shen1, Christopher S Carlson, Peter Tarczy-Hornoch

  • 1Departments of Biomedical & Health Informatics, University of Washington, Seattle, WA, USA. hyshen@u.washington.edu

BMC Bioinformatics
|September 19, 2009
PubMed
Summary

Understanding genetic variation through single nucleotide polymorphisms (SNPs) is key for disease research. The SNP Integration Tool (SNPit) aids in assessing SNP function, improving genetic association studies.

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Area of Science:

  • Population genetics
  • Human genetic variation
  • Bioinformatics tools

Background:

  • Genetic variation influences many common and chronic diseases.
  • Single nucleotide polymorphisms (SNPs) are crucial for understanding human genetic diversity.
  • Assessing the functional impact of SNPs is vital for genetic studies.

Purpose of the Study:

  • To introduce the SNP Integration Tool (SNPit) for predicting SNP functionality.
  • To evaluate the accuracy of the SNPit system using a novel gold standard.
  • To enhance the analysis of genetic association studies.

Main Methods:

  • Developed the SNP Integration Tool (SNPit) by integrating existing SNP functionality predictors.
  • Created an alternative gold standard for evaluating SNP prediction accuracy.
  • Measured accuracy using sensitivity and specificity metrics.

Main Results:

  • The SNPit system integrates diverse SNP functionality predictors.
  • The developed alternative gold standard provided a robust evaluation framework.
  • Initial evaluation results for the SNPit system were encouraging.

Conclusions:

  • SNPit offers a comprehensive resource for assessing SNP functional impact.
  • The novel evaluation method shows promise for assessing prediction tool accuracy.
  • Improved analysis of genetic association studies is facilitated by tools like SNPit.