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Formaldehyde-fixed paraffin-embedded (FFPE) tissues are crucial for next-generation sequencing (NGS) in cancer diagnostics. This study explores strategies to mitigate fixation artifacts for reliable genetic analysis.

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Area of Science:

  • Oncology
  • Molecular Biology
  • Pathology

Background:

  • Pathology has evolved from morphological diagnosis to incorporating biomolecular and genetic studies for targeted therapies.
  • Next-generation sequencing (NGS) is now indispensable for cancer diagnosis, prognosis, and treatment.
  • Formaldehyde-fixed paraffin-embedded (FFPE) tissues are a valuable source of clinical and molecular information.

Purpose of the Study:

  • To discuss the applications of FFPE tissue samples in NGS.
  • To identify challenges in nucleic acid extraction from FFPE samples for NGS.
  • To present strategies for preventing and reducing fixation artifacts in FFPE samples for NGS.

Main Methods:

  • Review of current applications of FFPE tissues in NGS.
  • Analysis of common problems encountered during nucleic acid extraction from FFPE samples.
  • Evaluation of strategies to minimize fixation-induced artifacts, such as single nucleotide polymorphisms (SNPs).

Main Results:

  • FFPE tissues are widely used for NGS, providing essential diagnostic and prognostic data.
  • Formalin fixation can introduce artifacts, impacting the quality of extracted DNA and RNA.
  • Specific methods can effectively reduce or prevent these artifacts, ensuring reliable NGS results.

Conclusions:

  • FFPE samples remain a critical resource for molecular profiling in oncology via NGS.
  • Understanding and addressing fixation artifacts is essential for accurate genetic analysis.
  • Implementing optimized strategies can enhance the utility of FFPE samples for NGS-based cancer research and clinical practice.