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Updated: Nov 5, 2025

Matrix-based DNA Extraction for Targeted Next-Generation Sequencing on Decontaminated Sputum Samples
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Rapid discrimination between tuberculosis and sarcoidosis using next-generation sequencing.

Yencheng Chao1, Jieyi Li2, Ziying Gong2

  • 1Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China.

International Journal of Infectious Diseases : IJID : Official Publication of the International Society for Infectious Diseases
|May 18, 2021
PubMed
Summary

Next-generation sequencing (NGS) effectively distinguishes tuberculosis (TB) from sarcoidosis (SA) using tissue specimens. This method offers improved diagnostic accuracy for differentiating these challenging conditions.

Keywords:
Clinical biopsy specimensDiagnosisNext-generation sequencingSarcoidosisTuberculosis

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Area of Science:

  • Medical diagnostics
  • Infectious diseases
  • Genomics

Background:

  • Tuberculosis (TB) and sarcoidosis (SA) share similar clinical, radiological, and histopathological features.
  • Accurate differentiation between TB and SA presents a significant clinical challenge.

Purpose of the Study:

  • To evaluate the feasibility of next-generation sequencing (NGS) for Mycobacterium tuberculosis (MTB) genome detection.
  • To assess NGS's utility in the differential diagnosis of TB versus SA.

Main Methods:

  • Directly captured and sequenced the MTB genome from tissue specimens of 44 TB and 47 SA patients.
  • Utilized NGS with a sequencing depth >10× and coverage >15% for MTB identification.

Main Results:

  • The NGS method achieved 81.8% sensitivity and 95.7% specificity in distinguishing TB from SA.
  • Overall concordance was 89.0% (kappa = 0.78, P<0.001), demonstrating high agreement.

Conclusions:

  • An improved NGS strategy was established for rapid differentiation of TB from SA.
  • This NGS approach shows potential for significant clinical benefits in diagnosing TB.