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HelpTest ID: NGTCL MayoComplete T-Cell Lymphoma, Next-Generation Sequencing, Varies
Shipping Instructions
Whole blood, bone marrow aspirate, and body fluid specimens must arrive within 14 days of collection.
Specimen Required
Submit only 1 of the following specimens:
Specimen Type: Bone marrow aspirate
Container/Tube:
Preferred: Lavender or pink top (EDTA) or yellow top (ACD)
Acceptable: Green top (sodium heparin)
Specimen Volume: 2 mL
Collection Instructions:
1. Invert several times to mix bone marrow.
2. Send bone marrow specimen in original tube. Do not aliquot.
3. Label specimen as bone marrow.
Specimen Stability Information: Ambient (preferred) 14 days/Refrigerate
Specimen Type: Whole blood
Container/Tube:
Preferred: Lavender or pink top (EDTA) or yellow top (ACD)
Acceptable: Green top (sodium heparin)
Specimen Volume: 3 mL
Collection Instructions:
1. Invert several times to mix blood.
2. Send whole blood specimen in original tube. Do not aliquot.
3. Label specimen as blood.
Specimen Stability Information: Ambient (preferred) 14 days/Refrigerate
Specimen Type: Paraffin-embedded tissue
Container/Tube: Paraffin block
Collection Instructions:
1. Send 1 representative slide stained with hematoxylin and eosin.
2. Minimum amount of tumor nuclei is 20%
3. Required amount of tissue area is at least 25 mm(2)
4. Tissue should be fixed in 10% neutral-buffered formalin. Other fixatives are not acceptable.
5. Decalcified specimens (eg, bone marrow core biopsies) are not acceptable.
Specimen Stability Information: Ambient
Specimen Type: Tissue slide
Slides: 10 unstained slides
Container/Tube: Transport in plastic slide holders.
Collection Instructions:
1. Send 10 unstained, nonbaked slides with 5-micron thick sections of tissue and 1 representative slide stained with hematoxylin and eosin.
2. Minimum amount of tumor nuclei is 20%
3. Required amount of tissue area is at least 25 mm(2).
4. Tissue should be fixed in 10% neutral-buffered formalin. Other fixatives are not acceptable.
5. Decalcified specimens (eg, bone marrow core biopsies) are not acceptable.
Specimen Stability Information: Ambient
Specimen Type: Frozen tissue
Container/Tube: Plastic container
Specimen Volume: 100 mg
Collection Instructions: Freeze tissue within 1 hour of collection
Specimen Stability Information: Frozen
Specimen Type: Body fluid
Container/Tube: Sterile container
Specimen Volume: 5 mL
Specimen Stability Information: Refrigerated 14 days/Frozen
Specimen Type: Extracted DNA
Container/Tube: 1.5- to 2-mL tube
Specimen Volume: Entire specimen
Collection Instructions:
1. Label specimen as extracted DNA and source of specimen
2. Indicate volume and concentration of DNA on label
Specimen Stability Information: Frozen (preferred)/Refrigerated/Ambient
Forms
Useful For
Aiding in establishing diagnosis, refining prognosis, and potentially identifying targeted therapies for the optimal management of patients with T-cell lymphomas
Genetics Test Information
This test includes next-generation sequencing to evaluate the following 22 genes and select intronic regions: ARID1B, CCR4, CXCR4, DDX3X, DNMT3A, EZH2, FYN, IDH1, IDH2, JAK1, JAK3, KMT2D, KRAS, MSC, NOTCH1, NRAS, PLCG1, RHOA, STAT3, STAT5B, TET2, and TP53. For a list of genes and exons targeted by this test, see Targeted Genes Interrogated by T-cell Lymphoma Next-Generation Sequencing.
Method Name
Next-Generation Sequencing (NGS)
Reporting Name
T-cell Lymphoma, NGS, VSpecimen Type
VariesSpecimen Minimum Volume
Whole blood, bone marrow aspirate, body fluid: 1 mL; Frozen tissue: 50 mg; Extracted DNA: 100 microliters (mcL) at 20 ng/mcL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Varies | Varies | 14 days |
Clinical Information
T-cell lymphomas are a heterogenous group of hematological disorders characterized by a range of morphological, immunophenotypic, and clinical features. Many entities share overlapping morphologic and immunophenotypic features resulting in challenges for accurate diagnosis and classification. Genomic profiling by next-generation sequencing has revealed genetic markers that aid in the classification and characterization of mature T-cell neoplasms. This test is intended to interrogate a set of genes with diagnostic, prognostic, and possible therapeutic value in a diverse group of T-cell lymphomas, which includes peripheral T-cell lymphomas and its major subtypes (eg, angioimmunoblastic T-cell lymphomas).
Reference Values
An interpretive report will be provided.
Interpretation
Genomic variants detected by this test will be documented in a detailed laboratory-issued report. This report will contain information regarding the detected alterations and their associations with prognosis or possible therapeutic implications in T-cell lymphomas. The information in the clinical report may be used by the patient’s clinician to help guide decisions concerning management. Final interpretation of next-generation sequencing results requires correlation with all relevant clinical, pathologic, and laboratory findings and is the responsibility of the managing clinician.
Clinical Reference
1. Swerdlow S, Campo E, Harris NL, et al, eds. WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues. 4th ed. IARC Press; 2017. WHO Classification of Tumours, Vol 2
2. Sandell RF, Boddicker RL, Feldman AL. Genetic landscape and classification of peripheral T cell lymphomas. Curr Oncol Rep. 2017;19(4):28. doi:10.1007/s11912-017-0582-9
3. Lemonnier F, Gaulard P, de Leval L. New insights in the pathogenesis of T-cell lymphomas. Curr Opin Oncol. 2018;30(5):277-284. doi:10.1097/CCO.0000000000000474
4. Vallois D, Dobay MP, Morin RD, et al. Activating mutations in genes related to TCR signaling in angioimmunoblastic and other follicular helper T-cell-derived lymphomas. Blood. 2016;128(11):1490-502. doi:10.1182/blood-2016-02-698977
Day(s) Performed
Report Available
16 to 21 daysTest 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.CPT Code Information
81450
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| NGTCL | T-cell Lymphoma, NGS, V | 104242-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| MP071 | Specimen Type | 31208-2 |
| MP072 | Indication for Test | 42349-1 |
| 618505 | NGTCL Result | No LOINC Needed |
| 618506 | Pathogenic Mutations Detected | 82939-0 |
| 618507 | Interpretation | 69047-9 |
| 618509 | Variants of Unknown Significance | 93367-1 |
| 618510 | Additional Information | 48767-8 |
| 618508 | Clinical Trials | 82786-5 |
| 618511 | Method Summary | 85069-3 |
| 618512 | Disclaimer | 62364-5 |
| 618513 | Panel Gene List | 36908-2 |
| 618514 | Reviewed By | 18771-6 |