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Advancements in Diagnostics and Therapeutics for Cancer of Unknown Primary in the Era of Precision Medicine

  • 0Department of Medical Oncology Fudan University Shanghai Cancer Center Shanghai China.
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April 17, 2025

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April 17, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

Cancer of unknown primary (CUP) is diagnosed using advanced molecular techniques, improving accuracy. Gene expression profiling-guided treatment enhances survival for CUP patients.

Area Of Science

  • Oncology
  • Molecular Diagnostics
  • Cancer Research

Background

  • Cancer of unknown primary (CUP) constitutes 2-5% of all malignancies and is a significant cause of cancer-related mortality.
  • Diagnosis of CUP is challenging due to the occult nature of the primary tumor, historically leading to poor prognoses.

Purpose Of The Study

  • To review the epidemiology, etiology, pathogenesis, and characteristics of CUP.
  • To provide an overview of diagnostic and therapeutic advancements in CUP over the last 50 years.
  • To highlight the impact of gene expression profiling (GEP) in guiding site-specific treatment for CUP.

Main Methods

  • Review of epidemiological, etiological, and pathogenetic data for CUP.
  • Analysis of advancements in diagnostic methodologies including cytology, histology, GEP, and genomic/epigenomic analyses.
  • Evaluation of clinical trial data, including a phase III trial on GEP-guided treatment.

Main Results

  • Modern molecular diagnostics, particularly GEP, have surpassed 90% accuracy in CUP diagnosis.
  • GEP-guided site-specific treatment demonstrated improved progression-free survival and overall survival in a phase III trial.
  • Significant progress has been made in understanding and managing CUP over the past five decades.

Conclusions

  • GEP-guided site-specific treatment represents a foundational shift in first-line management for CUP.
  • Optimizing diagnostic modalities and exploring further-line treatment regimens are crucial for future CUP research.
  • Continued research is essential to further improve outcomes for patients with cancer of unknown primary.

Keywords:

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