First slide
CytoCell fluorescence in situ hybridisation (FISH) logo.

Product summary

  • Chromosomes
    2221
  • Labels    
  • Disease focus Sarcoma
  • Regulatory status In vitro diagnostic. This product is intended to be used on formalin-fixed paraffin-embedded (FFPE) tissues. Disease information supported by the literature and is not a reflection of the intended purpose of this product.
Cytocell Catalogue Probe Packaging With Amber Tube
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Probe design

Overview

Probe specification

  • EWSR1, 22q12, Red
  • ERG, 21q22, Green

The EWSR1/ERG Translocation probe consists of green probes (215kb, 154kb) flanking the breakpoint region at the ERG gene locus and red probes (139kb, 151kb) flanking the breakpoint region at the EWSR1 locus.

 

Probe information

Ewing's sarcoma (EWS) is the second most frequent primary bone cancer in patients under 20 years of age1. It is mainly characterised by a translocation between the two genes - EWSR1 (Ewing's Sarcoma Region 1) and FLI1 (Friend Leukaemia virus Integration 1) - in the t(11;22)(q24;q12) translocation, found in 83% of such tumours2. 10% of the remaining cases have a variant translocation involving EWSR1 and ERG, t(21;22)(q22;q12), and less than 1% carry one of the 7p22 (ETV1), 17q12 (E1AF) or 2q36 (FEV) translocations with EWSR13.

EWSR1 is also involved in translocations in desmoplasmic small round cell tumours, a subset of angiomatoid fibrous histocytomas, and possibly in myxoid liposarcoma4,5.

Product documentation

FFPE tissue preparation and FISH protocol

Select a protocol step to view:

Heat pretreatment

Icon representing the heat pre-treatment stage of the fluorescence in situ hybridisation (FISH) protocol for FFPE samples.
  • Heat 50ml Tissue Pretreatment Solution (Reagent 1) in a porcelain wash jar or coplin jar immersed in a waterbath until it is either boiling or 98 - 100°C.
  • Boil slides for 30 minutes (Note: different incubation times may be required depending on tissue fixation. A 30-minute incubation is a recommended starting point).
  • Wash in PBS or dH2O at room temperature (RT) for 2 x 3 minutes.

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References

  1. Bernstein M et al., Oncologist 2006;11(5):503-19
  2. Turc-Carel C et al., Cancer Genet Cytogenet 1988;32:229-38
  3. Suárez Antelo et al., Arch Bronconeumol. 2010;46(01):44-6
  4. Borden EC et al., Clin Canc Res 2003;9:1941-56
  5. Sandberg AA, Bridge JA, Cancer Genet Cytogenet 2000;123(1):1-26