Novel Diagnostic Approach for Pulmonary Tuberculosis Developed by Researchers from School of Laboratory Medicine

Strategic Insights -

Researchers at the School of Laboratory Medicine have developed a novel diagnostic approach for pulmonary tuberculosis using a circulating microRNA (miRNA) panel. This study aimed to distinguish pulmonary tuberculosis from lung cancer, particularly in patients presenting with overlapping radiographic features. The research team, led by Xiao Liu, analyzed miRNA expression profiles from 284 individuals, including PTB patients, LC patients, and healthy controls. They identified three miRNAs (hsa-miR-342-3p, hsa-miR-199a-3p, and hsa-miR-199b-3p) that were significantly upregulated in PTB compared to LC. The diagnostic panel incorporating these three miRNAs demonstrated robust performance, achieving an area under the receiver operating characteristic curve (AUC) of 0.911 in the training set and 0.886 in the validation set, with a sensitivity of 0.879.

Key Takeaways:

  • Researchers from the School of Laboratory Medicine developed a novel diagnostic approach for pulmonary tuberculosis using a circulating miRNA panel.
  • The study involved analyzing miRNA expression profiles from 284 individuals, including PTB patients, LC patients, and healthy controls.
  • The researchers identified three miRNAs (hsa-miR-342-3p, hsa-miR-199a-3p, and hsa-miR-199b-3p) that were significantly upregulated in PTB compared to LC.
  • The diagnostic panel incorporating these three miRNAs achieved an AUC of 0.911 in the training set and 0.886 in the validation set, with a sensitivity of 0.879.
  • The miRNA panel outperformed the World Health Organization -endorsed Xpert MTB/RIF assay, effectively identifying early-stage PTB cases without cavity formation.
  • This study underscores the potential of miRNA-based diagnostics as a non-invasive and highly accurate tool for differentiating PTB from LC in patients with comparable imaging presentations.
  • The research was financially supported by the Natural Science Foundation of Shandong Province.

Statistics:

  • 592 participants were enrolled in the study.
  • 284 individuals were analyzed in the discovery phase, including 137 PTB patients, 125 LC patients, and 22 healthy controls.
  • The diagnostic panel achieved an AUC of 0.911 (95% CI: 0.852-0.952) in the training set and 0.886 (95% CI: 0.780-0.953) in the validation set.
  • The sensitivity of the miRNA panel was 0.879.
  • The World Health Organization -endorsed Xpert MTB/RIF assay was used as a comparison for the miRNA panel.

Sources:

  • A novel circulating miRNA panel for early differential diagnosis of pulmonary tuberculosis from lung cancer with similar radiographic presentations. Frontiers in Medicine, 2025,12. (Frontiers in Medicine - http://www.frontiersin.org/medicine).
  • The publisher for Frontiers in Medicine is Frontiers Media S.A.
  • A free version of this journal article is available at https://doi-org.sdpl.idm.oclc.org/10.3389/fmed.2025.1660291.