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Updated: Dec 22, 2025

Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing
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Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing

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Practical genotyping by single-nucleotide primer extension.

Joan P Breyer1, Jeffrey R Smith1,2

  • 1Division of Genetic Medicine, Department of Medicine, Vanderbilt Genetics Institute, Vanderbilt University Medical Center, Nashville, TN, USA.

Biology Methods & Protocols
|May 9, 2020
PubMed
Summary
This summary is machine-generated.

This study presents a customizable single-nucleotide primer extension (SNuPE) genotyping method for efficiently validating genetic variants. The SNuPE assay is scalable and reliable for large-scale genotyping of single nucleotide polymorphisms (SNPs) and insertion-deletions (indels).

Keywords:
SNPfluorescence polarizationgenotypegenotypingpolymorphismprimer extension

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Area of Science:

  • Genetics
  • Molecular Biology
  • Bioinformatics

Background:

  • Genome-wide association studies (GWAS) identify genetic variants requiring validation in large cohorts.
  • Current genotyping methods face limitations in throughput and applicability for specific variants.
  • Efficiently genotyping single nucleotide polymorphisms (SNPs) and insertion-deletions (indels) is crucial for genetic research.

Purpose of the Study:

  • To adapt and implement a single-nucleotide primer extension (SNuPE) method for versatile genotyping.
  • To establish a reliable and scalable laboratory protocol for high-throughput genotyping.
  • To demonstrate the efficacy of SNuPE for validating genetic variants identified in GWAS.

Main Methods:

  • Adaptation of the single-nucleotide primer extension (SNuPE) assay.
  • Implementation as a general laboratory protocol for genotyping SNPs and indels.
  • Application for production-scale genotyping using standard laboratory equipment.

Main Results:

  • Successful conversion of 87% of tested SNPs and indels for SNuPE assay.
  • Achieved a low estimated error rate of 0.003 for the SNuPE genotyping assay.
  • Demonstrated reliable performance for production-scale genotyping.

Conclusions:

  • The adapted SNuPE genotyping assay is a viable and customizable addition to existing methods.
  • The SNuPE method is scalable and suitable for large-scale genetic variant validation.
  • This protocol utilizes standard reagents and equipment, making it accessible for many laboratories.