Test Name: Chronic Myelomonocyitc Leukemia (CMML) FISH Panel


Methodology: FISH


Test Description

•Disease(s):  Abnormalities associated with chronic myelomonocytic leukemia and other myeloproliferative or myelodysplastic/myeloproliferative neoplasms; the panel includes BCR/ABL, which has to be excluded for a diagnosis of CMML (WHO criteria)
•Probes:
◦EGR1 5q31.2/TASR1 5p15.31 (5q)
◦RELN, ORC5L 7q22/TES 7q31 (7q)
CEP8/CMYC (+8)
◦ABL1 9q34/BCR 22q11.2/ASSI 9q34 t(9;22)
◦PTPRT 20q12/MYBL2 20q13.12 (20q)

◦Probes may be ordered separately


Specimen Requirements

•Bone Marrow Aspirate: 1-3 mL sodium heparin tube. EDTA tube is acceptable.
•Peripheral Blood: 2-4 mL sodium heparin tube. EDTA tube is acceptable.
•Fresh, Unfixed Tissue: Tissue in RPMI.
•Bone Marrow Core Biopsy: 1-2cm core (length) Tissue in RPMI.
•Fluids: Equal parts RPMI to specimen volume.
•Paraffin Block or Cut Slides: Not available.


Storage and Transport

Use cold pack for transport, making sure cold pack is not in direct contact with specimen. 


Specimen Rejection Criteria

Click here to reference the specimen rejection criteria.


Turn Around Time (TAT): 1-3 Days


CPT Codes*: 88377(x5)


*The CPT codes provided with our Test Descriptions are based on AMA guidelines and are for informational purposes only. Correct CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed.