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Related Experiment Video

Updated: May 12, 2026

Pyrosequencing: A Simple Method for Accurate Genotyping
13:06

Pyrosequencing: A Simple Method for Accurate Genotyping

Published on: January 8, 2008

Accurate human papillomavirus genotyping by 454 pyrosequencing.

V Militello1, E Lavezzo, G Costanzi

  • 1Department of Molecular Medicine, University of Padova, Padova, Italy.

Clinical Microbiology and Infection : the Official Publication of the European Society of Clinical Microbiology and Infectious Diseases
|April 12, 2013
PubMed
Summary

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A new next-generation sequencing (NGS) method accurately identifies human papillomavirus (HPV) types in single and multiple infections. This sensitive and specific HPV typing approach aids vaccine monitoring and cervical cancer screening.

Area of Science:

  • Virology
  • Genetics
  • Molecular Biology

Background:

  • Accurate human papillomavirus (HPV) typing is crucial for HPV vaccine evaluation, cervical cancer screening, and epidemiological studies.
  • Existing HPV typing methods may have limitations in sensitivity and breadth of coverage for certain HPV types.

Purpose of the Study:

  • To develop and clinically validate a novel HPV typing method utilizing 454 next-generation sequencing (NGS) of HPV L1 amplicons.
  • To enhance sensitivity for underrepresented HPV types using a modified PGMY primer set.

Main Methods:

  • The study employed 454 pyrosequencing of HPV L1 amplicons generated with a modified PGMY primer set.
  • The method's performance was assessed using WHO LabNet EQA sample panels, mixtures of HPV16/18 cell lines, and clinical cervical specimens.
Keywords:
454 pyrosequencingdiagnostic accuracygenotypinghuman papillomavirusmultiple infectionnext generation sequencingsensitivity and specificity

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Main Results:

  • The NGS method demonstrated high sensitivity (50 genome equivalents) and correctly identified all high-risk HPV types in single and multiple infections.
  • It accurately quantified HPV proportions in mixed infections and resolved discordant results from other typing assays.
  • The method showed high precision, specificity, and the ability to detect a broad range of HPV types.

Conclusions:

  • A novel, sensitive, specific, and quantitative HPV typing method based on 454 NGS was successfully established.
  • This method is effective for analyzing single and multiple HPV infections, including those with discordant results from other assays.
  • The developed NGS approach holds potential for identifying known and potentially novel HPV types.