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Gene of the month: ERG
  1. Dorinda Mullen1,
  2. Klaudia Nowak1,
  3. Runjan Chetty2
  1. 1 Department of Pathology, University Health Network Laboratory Medicine Program, University of Toronto, Toronto, Ontario, Canada
  2. 2 Deciphex (Pty Ltd), Dublin, Ireland
  1. Correspondence to Professor Runjan Chetty, Deciphex (Pty Ltd), Dublin, Ireland; runjan.chetty{at}


The ERG gene belongs to the erythroblastosis transformation specific family of transcription factors and encodes for the transcription regulator protein ERG. It is located on chromosome 22q22 and is a nuclear transcription factor. In normal physiology, ERG protein is expressed in endothelial cells and is involved in processes including, but not limited to, angiogenesis and haematopoiesis. Of diagnostic value in clinical practice, ERG immunohistochemistry is a useful marker of endothelial differentiation for both benign and malignant vascular lesions. It is also reliable for identifying ERG gene translocated malignancies such as EWS/FUS::ERG Ewing’s sarcoma and TMPSSR2::ERG prostatic carcinoma.

  • genes, neoplasm
  • molecular biology
  • oncogenes

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  • Handling editor Tahir S Pillay.

  • Twitter @runjanchetty

  • Contributors All authors contributed equally to the manuscript.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; internally peer reviewed.