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Test ID NBLD0582 MGMT Promoter Methylation, Tumor

Useful For

Prognostication of newly diagnosed patients with glioblastoma, IDH-wildtype

 

Identifying newly diagnosed glioblastoma, IDH-wildtype patients that may respond to alkylating chemotherapy (ie, temozolomide)

 

Guiding therapy decision making for newly diagnosed glioblastoma, IDH-wildtype in older patients (>60-65 years)

Specimen Type

Varies


Necessary Information


Pathology report (final or preliminary), at minimum containing the following information, must accompany specimen for testing to be performed:

1. Patient name

2. Block number-must be on all blocks, slides, and paperwork (can be handwritten on the paperwork)

3. Tissue collection date

4. Source of the tissue



Specimen Required


Preferred:

Specimen Type: Tissue

Container/Tube: Tissue block

Collection Instructions: Submit a formalin-fixed, paraffin-embedded tissue block. At least 40% tumor is required for this assay. In general, a 6 mm x 3 mm area of tissue cut at 5-micron thickness is the minimum amount of tissue needed; this could be collected over multiple slides.

 

Acceptable:

Specimen Type: Tissue sections

Slides: 1 Stained and 5 unstained

Collection Instructions: Submit 1 slide stained with hematoxylin and eosin and 5 unstained, nonbaked slides with 5-micron thick sections of the tumor. At least 40% tumor is required for this assay. In general, a 6 mm x 3 mm area of tissue cut at 5-micron thickness is the minimum amount of tissue needed; this could be collected over multiple slides.


Specimen Minimum Volume

5 Unstained slides at 5-microns thickness

Reject Due To

Specimens that have been decalcified (all methods)
Specimens that have not been formalin-fixed, paraffin-embedded
Bone marrow in EDTA
Reject

Specimen Stability Information

Specimen Type Temperature Time
Varies Ambient (preferred)
  Frozen 
  Refrigerated 

Day(s) Performed

Varies

Report Available

7 to 10 days

Method Name

Methylation-Specific Polymerase Chain Reaction (PCR) Analysis

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

81287

88381

Additional Tests

Test ID Reporting Name Available Separately Always Performed
SLIRV Slide Review in MG No, (Bill Only) Yes

Testing Algorithm

When this test is ordered, slide review will always be performed at an additional charge.

Reporting Name

MGMT Promoter Methylation, Tumor

Reference Values

An interpretive report will be provided.

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

Forms

If not ordering electronically, complete, print, and send an Oncology Test Request (T729) with the specimen.

Secondary ID

36733
Sanford Laboratories - Fargo Additional Information:

SANFORD INTERFACE BUILD INFORMATION

Result Code Result Code Description
22415 Result Summary
22416 Result
22417 Interpretation
22418 Additional Information
22419 Specimen
22420 Source
22421 Tissue ID
22422 Released By