Methodology
Immunohistochemistry (IHC)
Test Description
cMyc protein is a transcription factor localized to the nucleus of the cell. Amplification of the cMyc gene has been found in several types of human tumors.
cMyc is amplified in 20-30% of breast cancer cases and is associated with HER-2 amplification and poor outcome. In Burkitt’s lymphoma, 90% of tumors have translocation of cMyc or variants. cMyc protein (>40%) is seen in a subset of cases of diffuse large B-cell lymphoma (DLBCL) and is correlated with Myc rearrangement. It is also positive in radiation-associated angiosarcoma.
Specimen Requirements
- A formalin-fixed, paraffin-embedded (FFPE) tissue block is preferred specimen type
or - One (1) unbaked, unstained slide for H&E staining (required) and two to three (2-3) positively charged unstained slides (all cut at 4-5 microns) for each test/antibody ordered
- Block and slide identifiers should be clearly written and match exactly with the specimen ID and specimen labeling as noted on the requisition.
Storage & Transportation
Use cold pack for transport. Make sure cold pack is not in direct contact with specimen.
CPT Code(s)*
88342 x 1 or 88341 x 1
Turnaround Time
24 hours
Level of Service
Stain Only
New York Approved
Yes
Notes
Global prognostic interpretation is available (TAT is 48 hours)