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Updated: Jun 27, 2026

Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing
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Published on: February 10, 2023

Methodological Advances in Mitochondrial DNA Analysis for Forensic Genetics.

Víctor Daniel Carrillo-Rodríguez1,2, Carina Amalinalli Ruiz-Villavicencio1, María Teresa Navarro-Romero1

  • 1Laboratorio de Investigación e Innovación en Genética Forense (LIIGF), Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City 14610, Mexico.

Genes
|June 26, 2026
PubMed
Summary

Mitochondrial DNA (mtDNA) analysis offers crucial forensic insights, especially for degraded samples. Advances in sequencing technologies like Massive Parallel Sequencing (MPS) and Third-Generation Sequencing (TGS) enhance its reliability for human identification and lineage reconstruction.

Keywords:
forensic geneticshuman identificationmassive parallel sequencingmitochondrial DNAthird-generation sequencing (TGS)

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Area of Science:

  • Forensic genetics
  • Molecular biology
  • Human identification

Background:

  • Mitochondrial DNA (mtDNA) analysis is vital in forensic genetics for degraded samples.
  • Its high copy number and matrilineal inheritance aid in human identification and lineage reconstruction.
  • Applications include disaster victim identification, historical cases, and missing persons investigations.

Purpose of the Study:

  • To review contemporary methodological approaches for human mitogenome investigation.
  • To highlight advancements in DNA extraction, enrichment, and sequencing techniques.
  • To assess the impact of these advancements on forensic mtDNA analysis.

Main Methods:

  • Review of recent literature on mitochondrial DNA analysis techniques.
  • Discussion of advancements in DNA extraction and enrichment.
  • Evaluation of Sanger sequencing, Massive Parallel Sequencing (MPS), and Third-Generation Sequencing (TGS) platforms.

Main Results:

  • Extraction and enrichment techniques effectively reduce nuclear mitochondrial DNA sequences (NUMTs) and improve fragment recovery.
  • Massive Parallel Sequencing (MPS) significantly enhances sensitivity for detecting low-frequency heteroplasmies.
  • Third-Generation Sequencing (TGS) enables full-length native molecule sequencing, minimizing PCR amplification biases.

Conclusions:

  • Methodological advances are strengthening the reliability of mitochondrial DNA analysis in forensics.
  • Ongoing improvements expand the potential of mtDNA analysis for human identification and lineage reconstruction.
  • Challenges such as heteroplasmy interpretation and database limitations persist but are being addressed.