FISH, ETV6/RUNX1 (TEL/AML1), Translocation (12;21)
Test Code
Clinical Significance
FISH, ETV6/RUNX1 (TEL/AML1), Translocation (12;21) - This fluorescence in situ hybridization (FISH) assay detects the ETV6/RUNX1 (TEL/AML1) fusion gene and is used for determining prognosis of patients with acute lymphoblastic leukemia (ALL) and monitoring for recurrence.
The ETV6/RUNX1 (TEL/AML1) fusion gene results from the t(12;21)(p13;q22) translocation and is usually undetectable by conventional chromosome analysis [1]. Although it occurs rarely in adults, it is the most common recurrent translocation in B-lineage pediatric ALL (frequency ~25%) [2]. The presence of the ETV6/RUNX1 (TEL/AML1) fusion ...
Test Resources
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Test Details
Methodology
Reference Range(s)
Alternative Name(s)
Preferred Specimen(s)
5 mL whole blood or 3 mL bone marrow collected in a sodium heparin (green-top) tube
Alternative Specimen(s)
Sodium heparin (royal blue-top) tube • Sodium heparin lead-free (tan-top) tube
Minimum Volume
1 mL
Transport Container
Sodium heparin (green-top) tube
Transport Temperature
Room temperature
Specimen Stability
- Specimen viability decreases during transit. Send specimen to testing lab for viability determination. Do not freeze. Do not reject.