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Development and application of a whole transcriptome sequencing assay for the detection of gene fusions in clinical cancer specimens

  • 0Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China.
Bmc Cancer +

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May 9, 2025

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May 9, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

A new whole transcriptome sequencing (WTS) assay accurately detects gene fusions in cancer, identifying actionable alterations to guide treatment decisions and improve patient outcomes.

Area Of Science

  • Oncology
  • Genomics
  • Molecular Diagnostics

Background

  • Gene fusions are key drivers of cancer, necessitating precise detection for clinical decision-making.
  • The diagnostic utility of whole transcriptome sequencing (WTS) for gene fusion detection remains underexplored.

Purpose Of The Study

  • To develop and validate a novel WTS-based assay for detecting gene fusions, including MET exon 14 skipping and EGFR VIII alterations.
  • To establish optimal parameters for WTS assay sensitivity, specificity, and reproducibility.

Main Methods

  • Development of a novel whole transcriptome sequencing (WTS) assay.
  • Optimization of assay parameters including RNA input, fusion expression, and mapped reads.
  • Validation using clinical samples, including 101 non-small cell lung cancer (NSCLC) cases.

Main Results

  • The WTS assay achieved 98.4% sensitivity and 100% specificity in detecting known gene fusions.
  • Optimal assay performance was defined by specific thresholds for RNA quality, input, expression, and read mapping.
  • A high proportion (68.9%) of identified fusions in NSCLC samples were potentially actionable, with additional diagnostic and prognostic value observed in pan-cancer samples.

Conclusions

  • A novel WTS assay demonstrates high sensitivity, specificity, repeatability, and reproducibility for gene fusion detection.
  • The assay effectively identifies potentially actionable gene fusions, offering valuable insights for guiding cancer treatment decisions.
  • This WTS assay contributes to understanding the fusion landscape in various cancers, aiding diagnosis and prognosis.

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