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Test ID MCLNR MayoComplete Lung Rearrangements, Rapid, Tumor

Ordering Guidance

Multiple oncology (cancer) gene panels are available. For more information see Oncology Somatic NGS Testing Guide.

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

This assay requires at least 10% tumor nuclei.

-Preferred amount of tumor area with sufficient percent tumor nuclei: tissue 36 mm(2)

-Minimum amount of tumor area: tissue 18 mm(2)

-These amounts are cumulative over up to 10 unstained slides and must have adequate percent tumor nuclei.

-Tissue fixation: 10% neutral buffered formalin, not decalcified



Specimen Type: Tissue block and cell block

Collection Instructions: Submit a formalin-fixed, paraffin-embedded tissue block or cell block with acceptable amount of tumor tissue.



Specimen Type: Tissue slides

Slides: 1 Stained and 5 unstained

Collection Instructions: Submit 1 slide stained with hematoxylin and eosin and 5 unstained, nonbaked slides wit 5-micron thick sections of the tumor tissue.

Note: The total amount of required tumor nuclei can be obtained by scraping up to 5 slides from the same block.

Additional Information: Unused unstained slides will not be returned.


Specimen Type: Cytology slides (direct smears)

Slides: 1 to 3 Slides for smears

Collection Instructions: Submit 1 to 3 slides unstained or stained with Diff Quik or Pap and cover slipped with a preferred total of 5000 nucleated cells or a minimum of at least 3000 nucleated cells.

Note: Glass coverslips are preferred; plastic coverslips are acceptable but will result in longer turnaround times.

Additional Information: Cytology slides used in testing will have everything scraped and not be returned.

Useful For

Identifying lung tumors that may respond to targeted therapies by simultaneously assessing multiple genes involved in rearrangements resulting in fusion transcripts


Diagnosis and management of patients with lung cancer

Additional Tests

Test ID Reporting Name Available Separately Always Performed
SLIRV Slide Review in MG No Yes

Testing Algorithm

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

Method Name

Polymerase Chain Reaction (PCR)

Reporting Name

MayoComplete Lung Rearrangements

Specimen Type


Specimen Minimum Volume

See Specimen Required

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Ambient (preferred)

Clinical Information

Targeted cancer therapies are defined as antibody or small molecule drugs that block the growth and spread of cancer by interfering with specific cell molecules involved in tumor growth and progression. Multiple targeted therapies have been approved by the US Food and Drug Administration (FDA) for treatment of specific cancers. Molecular genetic profiling is often needed to identify targets amenable to targeted therapies and to minimize treatment costs and therapy-associated risks.


Fusions involving the NTRK1, NTRK2, or NTRK3 genes (ie, NTRK gene fusions) form through intra- and interchromosomal rearrangements. NTRK gene fusions lead to activation of downstream MAPK, PIK, and STAT3 signaling pathways and act as oncogenic drivers of multiple types of pediatric and adult solid tumors. In solid tumors, the presence of an NTRK gene fusion is a biomarker for response to tropomyosin receptor kinase inhibitor therapy.


Lung cancers harboring ALK rearrangements are resistant to epidermal growth factor receptor tyrosine kinase inhibitors, but may be highly sensitive to ALK inhibitors, like Xalkori (crizotinib). The drug Xalkori works by blocking certain kinases, including those produced by the abnormal ALK gene. Clinical studies have demonstrated that Xalkori treatment of patients with tumors exhibiting ALK rearrangements can halt tumor progression or result in tumor regression.


RET rearrangements occur in approximately 2.5% to 10% of sporadic papillary thyroid cancer(1) and 1% to 3% of non-small cell lung cancer. The most prevalent fusions are KIF5B exon 15 - RET exon 12 and KIF5B exon 16 - RET exon 12, which represent over 75% of RET fusions.


ROS1 (c-ros oncogene 1), originally described in glioblastomas, has been identified as a potential relevant therapeutic target in lung adenocarcinoma. Crizotinib has shown in vitro activity and early evidence of clinical activity in ROS1-rearranged tumors.


Many cases of METex14 alterations are found in lung adenocarcinomas, these events have a much higher incidence in pulmonary sarcomatoid carcinomas. Approximately 20% to 30% of sarcomatoid carcinomas harbor METex14 alterations.


See Targeted Genes and Methodology Details for MayoComplete Lung Rearrangements

Reference Values

An interpretive report will be provided.


The interpretation of molecular biomarker analysis includes an overview of the results and the associated diagnostic, prognostic, and therapeutic implications.

Clinical Reference

1. Vaishnavi A, Capelletti M, Le AT, et al: Oncogenic and drug-sensitive NTRK1 rearrangements in lung cancer.Nat Med 2013 Nov;19(11):1469-1472

2. US Food and Drug Administration (FDA): Table of Pharmacogenomic Biomarkers in Drug Labeling. FDA; Updated March 29, 2022, Accessed August 3, 2022. Available at

3. Shaw AT, Kim DW, Nakagawa K, Seto T, Crino L, Ahn MJ, et al. Crizotinib versus chemotherapy in advanced ALK-positive lung cancer. N Engl J Med. 2013;368(25):2385-94. doi: 10.1056/NEJMoa1214886.

4. Sehgal K, Patell R, Rangachari D, Costa DB. Targeting ROS1 rearrangements in non-small cell lung cancer with crizotinib and other kinase inhibitors. Transl Cancer Res. 2018;7(Suppl 7):S779-S86. doi: 10.21037/tcr.2018.08.11.

5. Drilon A, Oxnard GR, Tan DSW, Loong HHF, Johnson M, Gainor J, et al. Efficacy of Selpercatinib in RET fusion-positive non-small-cell lung cancer. N Engl J Med. 2020;383(9):813-24. doi: 10.1056/NEJMoa2005653.

6. Cocco E, Scaltriti M, Drilon A: NTRK fusion-positive cancers and TRK inhibitor therapy. Nat Rev Clin Oncol 2018 Dec;15(12):731-747 doi: 10.1038/s41571-018-0113-0

7. Frampton GM, Ali SM, Rosenzweig M, Chmielecki J, Lu X, Bauer TM, et al. Activation of MET via diverse exon 14 splicing alterations occurs in multiple tumor types and confers clinical sensitivity to MET inhibitors. Cancer Discov. 2015;5(8):850-9. doi: 10.1158/2159-8290.CD-15-0285

Day(s) Performed

Monday through Friday

Report Available

4 to 8 days

Test Classification

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

CPT Code Information





81479 (if appropriate for government payers)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
MCLNR MayoComplete Lung Rearrangements 73977-1


Result ID Test Result Name Result LOINC Value
618280 Result 82939-0
618281 Interpretation 69047-9
618282 Additional Info 48767-8
618283 Specimen 31208-2
618284 Tissue ID 80398-1
618285 Method 85069-3
618286 Disclaimer 62364-5
618287 Released By 18771-6