OCT2
Alias/Synonym: B-cell Transcription Factor
CPT Code: 88342
- Includes:
- Specimen Type, Preferred:
- Formalin fixed paraffin embedded tissue
- Specimen Type, Alternate:
- Sample Quantity, Preferred:
- 1 block
- 2 slides
- Sample Quantity, Minimum:
- N/A
- Transport Container:
- Paraffin block
- Unstained slides
- Transport Temperature:
- Room temperature
- Collection Instructions:
- Block and slide identifiers should be clearly written and match exactly with the specimen ID and specimen labeling as noted on the requisition.
- Slides should be positively charged and cut at 3-4 microns for each stain/antibody ordered.
- Specimen Stability:
- N/A
- Rejection Criteria:
- No liquid specimens.
- Uncharged slides
- Clinical Significance:
- Oct-2 is a transcription factor that binds to the immunoglobin gene octamer sites regulating B-cell specific genes. Oct-2 antibody protein expression is seen in germinal center B-cells and is greater in germinal center derived B-cell lymphomas. Studies suggest that morphologic and immunohistochemical studies can distinguish most cases of classic Hodgkin’s lymphoma (CHL) from its imitators. However, the differences in expression of BSAP, OCT-2, BOB.1 and the pan B-cell markers CD20, CD22 and CD79a may aid in distinguishing cases of CHL from nodular lymphocyte predominant Hodgkin’s lymphoma and diffuse large B-cell lymphomas.
- Limitations:
- Turnaround Time:
- 1 day(s)
- Reference Ranges:
- N/A