Molecular Biotechnology

, Volume 18, Issue 2, pp 97–104 | Cite as

A method for accurate detection of translocation junctions in ewing family of tumors

  • Toru Morishita
  • Mark E. Bolander
  • Kunbo Zhang
  • Susumu Tamai
  • Yoshio Mii
  • Gobinda Sarkar


The Ewing family of tumors (ET) generally contain translocations involving the EWS gene and the FLI or ERG genes. Identification of the translocation confirms the diagnosis of ET. Currently, diagnosis of the translocation is made by several methods. In general, these methods require different primer sets for amplifying different translocations and subsequent efforts to identify the amplified product. The need to employ different sets of primers to amplify different translocation junctions presents some limitations. We have developed a method based on PCR with consensus primers followed by direct automated sequencing of the amplified product. With this method we have correctly determined known as well as unknown ET-associated EWS-FLI and EWS-ERG translocations in appropriate specimens. Use of our consensus primers eliminates the need for separate PCRs to amplify EWS-FLI and EWS-ERG translocation junctions, and because direct sequencing is used for confirming the identity of the amplification product, the accuracy of detection becomes 100%. The method might also accurately diagnose ET-associated translocations other than EWS-FLI and EWS-ERG translocations.

Index Entries

Ewing’ tumor RT-PCR automated sequencing translocation consensus primer 


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Copyright information

© Humana Press Inc 2001

Authors and Affiliations

  • Toru Morishita
    • 1
    • 2
  • Mark E. Bolander
    • 1
  • Kunbo Zhang
    • 1
  • Susumu Tamai
    • 1
    • 2
  • Yoshio Mii
    • 1
    • 3
  • Gobinda Sarkar
    • 1
  1. 1.Department of OrthopedicsMayo Clinic and Mayo FoundationRochester
  2. 2.Department of Orthopedic SurgeryNara Medical UniversityNara
  3. 3.Surgical CenterNara Medical University HospitalNara

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