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Related Concept Videos

Cancer-Critical Genes I: Proto-oncogenes01:33

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Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
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Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
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Related Experiment Video

Updated: Jan 13, 2026

Oncogenic Gene Fusion Detection Using Anchored Multiplex Polymerase Chain Reaction Followed by Next Generation Sequencing
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Oncogenic Gene Fusion Detection Using Anchored Multiplex Polymerase Chain Reaction Followed by Next Generation Sequencing

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EcDNA-borne structural variants drive oncogenic fusion transcript amplification.

Hyerim Yi1, Shu Zhang1, Jason Swinderman2

  • 1RNA Medicine Program, Stanford University, Stanford, CA, USA; Departments of Dermatology and Genetics, Stanford University School of Medicine, Stanford, CA, USA; Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA; Sarafan ChEM-H, Stanford University, Stanford, CA, USA.

Cell
|January 8, 2026
PubMed
Summary
This summary is machine-generated.

Extrachromosomal DNA (ecDNA) amplifications drive cancer by creating oncogene fusions. These ecDNA fusions, particularly involving PVT1 and MYC, enhance cancer cell survival and transcription.

Keywords:
PVT1RNA fusionRNA stabilitySRSF1cancerecDNAextrachromosomal DNAoncogene

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Area of Science:

  • Oncology
  • Genetics
  • Molecular Biology

Background:

  • Extrachromosomal DNA (ecDNA) amplifications are recognized drivers of human cancers.
  • Understanding the role of ecDNA in cancer development is crucial for therapeutic advancements.

Purpose of the Study:

  • To investigate the role of ecDNA in generating and amplifying oncogene fusion transcripts across various cancer types.
  • To identify the mechanisms by which ecDNA fusions contribute to cancer progression.

Main Methods:

  • Integrated analysis of whole-genome and transcriptome sequencing data from diverse tumor samples and cancer cell lines.
  • Comparative analysis of oncogene fusion event rates across different copy-number alterations.

Main Results:

  • ecDNAs exhibit the highest rate of oncogene fusion events among all copy-number alterations.
  • Fusion of the PVT1 gene with various 3' partners on ecDNA increases RNA stability and enhances MYC-dependent transcription.
  • This mechanism promotes cancer cell survival.

Conclusions:

  • ecDNA acts as a significant platform for oncogene fusion formation in cancer.
  • ecDNA contributes to genome instability and drives cancer progression through fusion events.