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IGH/BCL2 FISH

Also known as: IGH/BCL2 FISH, t(14;18) FISH

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Purpose

Gene fusions involving the IGH gene at 14q32 and BCL2 at 18q21 are common in follicular lymphomas, and can also occur in diffuse large B-cell lymphomas (DLBCL). The identification of such fusions can assist in diagnosis and classification of disease.

Clinical Utility

Presence of an IGH-BCL2 gene fusion can be useful in diagnosing and sub-classifying B-NHLs. In association with BCL6 and MYC gene fusions (see ‘double/triple hit lymphoma panel’), this fusion can also indicate prognosis in B-cell lymphoma with features intermediate between DLBCL and Burkitt lymphoma.

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 to identify fusion of IGH with BCL2, due to a t(14;18)(q32;q21) translocation.

Test Ordering

This test is usually requested by a haematologist or oncologist.

0.5 mL bone marrow in transport media, or 5-10 mL blood in lithium heparin.

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.

Price

Pricing note:

The price varies according to the specific clinical conditions for a particular patient. Please contact Sonic Genetics on 1800 010 447 for more information.

Medicare Rebate

This test is not rebated by Medicare. The laboratory assumes that the patient or client has provided informed financial consent for the test.

Turnaround Time

2 working days.

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