Intended Use
The most frequent primary abnormalities in multiple myeloma (MM) are trisomies of odd-numbered chromosomes or translocations involving the immunoglobulin heavy chain (IGH) gene locus. As a consequence, translocation partner genes of IGH are dysregulated, as they are juxtaposed to transcriptional enhancers in the IGH locus. Prognosis and risk classification are strongly associated with the detection and interpretation of cytogenetic primary abnormalities. According to the International Myeloma Working Group (IMWG), risk classification of MM by FISH based analysis of IgH locus involving translocations represents one column of the entire diagnostics.
Patient Preparation
- Sample collection: Non-diluted bone marrow aspirate. Collect in a sodium heparinized Vacutainer.
- Specimen preparation: Do not freeze or expose to extreme temperatures.
- Bone Marrow: Transfer 3 mL bone marrow to a Green (Sodium Heparin). (Min: 1 mL)
- Whole Blood: Transport 5 mL whole blood. (Min: 2 mL)
- Storage/Transport Temperature: Room temperature.
- Unacceptable Conditions: Frozen specimens. Clotted specimens.
- Remarks:
- Stability: Ambient: 48 hours; Refrigerated: 48 hours; Frozen: Unacceptable
Methodology
Fluorescence in situ Hybridization (FISH)
Sample received to report Turnaround time (TAT)
3 working days
Reference Interval
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Interpretive Data
The most recent WHO classification of Tumours of Hematopoietic and Lymphoid Tissues (Revised 5th edition) is used for interpretation criteria for evaluation.
Resources
- Additional Technical Information
- Test Request Form
Sample Reports
- Enhanced Report
- See report