FISH, Myeloid Neoplasms, MECOM (EVI1), 3q26.2

Test Code

91391

CPT Codes
88271 (x3), 88275

Preferred Specimen

3 mL bone marrow or 5 mL whole blood collected in a sodium heparin (green-top) tube

Minimum Volume

1 mL bone marrow • 3 mL whole blood

Other Acceptable Specimens

Bone marrow or whole blood collected in: Sodium heparin (royal blue-top) tube or sodium heparin lead-free (tan-top) tube

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.

Methodology
Fluorescence in situ Hybridization (FISH)

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule

Daily

Reference Range

See Laboratory Report

Clinical Significance

Disruption of the human entropic virus integration site (EVI1 or MECOM) gene located at chromosome band 3q26.2 is associated with myeloid neoplasms and is indicative of a poor prognosis. EVI1 rearrangements are especially frequent in myeloid blast crisis that evolves through tyrosine kinase inhibitors. It has been associated with dysplasia of megakaryocytes and alters differentiation of other myeloid cells. Associated rearrangements include inv(3)(q21q26), t(3;3)q21;q26), t(3;21)(q26;q22) and t(3;12)(q26;p13).

Performing Laboratory

Quest Diagnostics Nichols Institute-Chantilly VA

14225 Newbrook Drive

Chantilly, VA 20151-2228

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.