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t(8;21) (RUNX1/RUNX1T1) pin

FISH

t(8;21) (RUNX1/RUNX1T1)

Methodology: FISH

Clinical Significance:
FISH studies for t(8;21) are clinically indicated in new diagnoses of acute myeloid leukemia (AML) for proper diagnostic classification, as the t(8;21) is a recurrent chromosomal abnormality in AML. FISH testing for this abnormality may also be indicated for follow-up studies to monitor disease progression and response to therapy. t(8;21)(q22;q22) is the most frequently observed karyotypic abnormality associated with acute myeloid leukemia (AML), especially in FAB M2. Clinically, this type of AML is found in 5-12% of AML, often shows eosinophilia, and has a high complete remission rate with conventional chemotherapy. Probe type: Dual fusion, dual color

Organ: Blood/Bone Marrow

Disease State: Acute Myeloid Leukemia (AML) / Myeloid Sarcoma

CPT Code(s): 88374. The CPT codes provided 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 payer being billed.

Turnaround Time: Within 4-6 business days of receipt

Schedule: Monday - Friday

Specimen Requirements:
• Peripheral blood, Preferred: 3 ml in sodium heparin (green top) / Acceptable: 3 ml in EDTA (purple top) - OR - • Bone marrow aspirate, Preferred: 1-2 ml in sodium heparin (green top) / Acceptable: 1-2 ml in EDTA (purple top) - OR - • Fresh tissue in RPMI