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Also known as: t(8;21) FISH, AML1/ETO FISH

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Fusion of the AML1 and ETO genes defines a specific AML subtype. These two genes are also known as RUNX1 and RNX1T1 (respectively). This gene fusion is the result of a chromosomal translocation: t(8;21)(q22;q22). Identification of this fusion has prognostic implications.

Clinical Utility

Fusion of AML1 and ETO is associated with favourable prognosis in adults with AML

This is an assay for non-heritable mutations. It does not raise issues of ethics or consent that are different from most other investigations ordered in the routine care of a patient.

Test Method

Fluorescent in situ hybridisation (FISH) analysis, using probes designed to detect AML1-ETO gene fusion.

Test Ordering

This test is usually requested by a haematologist or oncologist.

0.5 mL bone marrow in transport media (or 10 mL blood in lithium heparin if blasts>10%).

To help ensure the quality of the test, a genetic test should be done with a dedicated sample whenever possible i.e. a sample collected specifically for that test rather than a sample that is used for multiple tests.

We also recommend that the patient or another adult check the labelling of request forms and sample tubes.



This test may have a rebate for all or part of the cost.

Medicare Rebate

This test has a Medicare rebate of $196.35, subject to the requirements of the Medicare descriptor being met. The MBS item number is 73314.

Turnaround Time

2 working days.