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HelpTest Code COGMF Acute Myeloid Leukemia (AML), Children's Oncology Group Enrollment Testing, FISH, Varies
Ordering Guidance
This test is only performed on specimens from pediatric patients being considered for enrollment in a Children's Oncology Group (COG) protocol. If this test is ordered and the laboratory is informed that the patient is not on a Children's Oncology Group (COG) protocol, this test will be canceled and automatically reordered by the laboratory as AMLPF / Acute Myeloid Leukemia (AML), FISH, Pediatric, Varies.
For children in whom disease relapse or a secondary myeloid neoplasm is a concern and enrollment in a new COG protocol is being considered; order COGBM / Chromosome Analysis, Hematologic Disorders, Children's Oncology Group Enrollment Testing, Bone Marrow.
Shipping Instructions
Advise Express Mail or equivalent if not on courier service.
Necessary Information
1. A reason for testing, a flow cytometry and/or a bone marrow pathology report, and a Children's Oncology Group (COG) registration number and protocol number should be submitted with each specimen. The laboratory will not reject testing if this information is not provided, but appropriate testing and interpretation may be compromised or delayed. If this information is not provided, an appropriate indication for testing may be entered by Mayo Clinic Laboratories.
2. If a patient has received an opposite sex bone marrow transplant prior to specimen collection for this protocol, note this information on the request.
Specimen Required
Submit only 1 of the following specimens:
Preferred:
Specimen Type: Bone marrow
Container/Tube:
Preferred: Yellow top (ACD)
Acceptable: Green top (heparin) or lavender top (EDTA)
Specimen Volume: 2 to 3 mL
Collection Instructions:
1. It is preferable to send the first aspirate from the bone marrow collection.2. Invert several times to mix bone marrow.
Acceptable:
Specimen Type: Blood
Container/Tube:
Preferred: Yellow top (ACD)
Acceptable: Green top (heparin) or lavender top (EDTA)
Specimen Volume: 6 mL
Collection Instructions: Invert several times to mix blood.
Useful For
Evaluation of pediatric bone marrow and peripheral blood specimens by fluorescence in situ hybridization (FISH) probe analysis for classic rearrangements and chromosomal copy number changes associated with acute myeloid leukemia (AML) in patients being considered for enrolment in Children's Oncology Group (COG) clinical trials and research protocols
As an adjunct to conventional chromosome studies in performed in pediatric patients with AML being considered for enrollment in COG protocols
Testing Algorithm
This test is only performed on specimens from pediatric patients being considered for enrollment in a Children's Oncology Group (COG) protocol.
The fluorescence in situ hybridization (FISH) panel includes testing for the following abnormalities using the FISH probes listed:
inv(16), [M4, Eos], MYH11/CBFB
t(8;21), [M2], RUNX1T1/RUNX1
t(15;17), [M3], PML/RARA
11q23 rearrangement, [M0-M7], MLL (KMT2A)
t(6;9), [M2,M4], DEK/NUP214
inv(3) or t(3;3), [M1,2,4,6,7], RPN1/MECOM
t(8;16), [M4,M5], KAT6A/CREBBP
t(1;22), [M7], RBM15/MKL1
-5/5q-, D5S630/EGR1
-7/7q-, D7Z1/ D7S486
12p13 rearrangement, ETV6
inv(16), GLIS2/CBFA2T3
11p15.4 rearrangement, NUP98
When an MLL (KMT2A) rearrangement is identified, reflex testing will be performed to identify the translocation partner. Probes include identification of:
t(4;11)(q21;q23) AFF1/MLL
t(6;11)(q27;q23) MLLT4(AFDN)/MLL
t(9;11)(p22;q23) MLLT3/MLL
t(10;11)(p12;q23) MLLT10/MLL
t(11;16)(q23;p13.3) MLL/CREBBP
t(11;19)(q23;p13.1)
MLL/ELL
t(11;19)(q23;p13.3) MLL/MLLT1
Appropriate ancillary probes may be performed at consultant discretion to render comprehensive assessment. Any additional probes will have the results included within the final report and will be performed at an additional charge.
In the absence of RPN1::MECOM fusion, when an extra MECOM signal is identified, the MECOM/RUNX1 probe set will be considered to identify a potential t(3;21)(q26.2;q22) rearrangement.
In the absence of RPN1::MECOM fusion, when an extra RPN1 signal is identified, reflex testing using the PRDM16/RPN1 probe set will be considered to identify a potential t(1;3)(p36;q21).
In the absence of MYH11::CBFB fusion, when an extra CBFB signal is identified, reflex testing will be performed using the CBFB break-apart probe set to evaluate for the presence or absence of an CBFB rearrangement.
In the absence of PML::RARA fusion, when an extra or atypical RARA signal is identified, testing using a break-apart RARA probe set will be performed to identify a potential variant translocation involving RARA; example: t(17;var)( q21;?).
When an ETV6 rearrangement is identified, reflex testing using the MNX1/ETV6 probe set will be performed to identify a potential t(7;12)(q36;p13) rearrangement.
When a NUP98 rearrangement is identified, reflex testing using the HOXA9/NUP98 probe set will be performed to identify a potential t(7;11)(p15;p15.4) rearrangement.
For more information see:
-Acute Leukemias of Ambiguous Lineage Testing Algorithm
-Acute Myeloid Leukemia: Testing Algorithm
-Acute Promyelocytic Leukemia: Guideline to Diagnosis and Follow-up
Special Instructions
Reporting Name
COG, AML, FISHSpecimen Type
VariesSpecimen Minimum Volume
Blood: 2 mL
Bone Marrow: 1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Varies | Ambient (preferred) | ||
| Refrigerated | |||
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Reference Values
An interpretive report will be provided.
Day(s) Performed
Monday through Friday
Report Available
7 to 10 daysSpecimen Retention Time
4 weeksPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
88271 x 2, 88275, 88291-FISH Probe, Analysis, Interpretation; 1 probe set
88271 x 2, 88275-FISH Probe, Analysis; each additional probe set (if appropriate)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| COGMF | COG, AML, FISH | 102101-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 602276 | Result Summary | 50397-9 |
| 602277 | Interpretation | 69965-2 |
| 602278 | Result Table | 93356-4 |
| 602279 | Result | 62356-1 |
| GC013 | Reason for Referral | 42349-1 |
| GC014 | Specimen | 31208-2 |
| 602281 | Source | 31208-2 |
| 602282 | Method | 85069-3 |
| 602283 | Additional Information | 48767-8 |
| 602284 | Disclaimer | 62364-5 |
| 602285 | Released By | 18771-6 |
Forms
If not ordering electronically, complete, print, and send a Children's Oncology Group Test Request (T829) with the specimen.