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Ebbelaar CF, van Dijk M, Breimer GE, Meijers RWJ, Klein LBC, Petronilia MM, de Leng WWJ, Blokx WAM, Jansen AML. Comparative Performance Analysis of Idylla and Archer in the Detection of Gene Fusions in Spitzoid Melanocytic Tumors. Mod Pathol 2024; 37:100538. [PMID: 38880351 DOI: 10.1016/j.modpat.2024.100538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 05/14/2024] [Accepted: 06/04/2024] [Indexed: 06/18/2024]
Abstract
Melanocytic neoplasms with spitzoid histomorphology are often difficult to classify without identifying genetic drivers such as kinase fusions. Traditional diagnostic methods, such as immunohistochemistry, can yield inconclusive results, and advanced techniques such as the Archer fusion assay are often inaccessible and costly. The Idylla GeneFusion Assay might offer a rapid and cost-effective alternative. This study compared Idylla and Archer in identifying ALK, pan-NTRK, RET, and ROS1 gene fusions. Of the 147 samples where next-generation sequencing did not detect genetic drivers, 89 (60.5%) meeting the tissue requirements were further analyzed using Idylla (Cohort A). Idylla demonstrated a sensitivity of 75% and a specificity of 100% in detecting these fusions. Additionally, among 27 randomly selected cases (Cohort B) that failed to meet the inclusion criteria, Idylla maintained the same levels of sensitivity and specificity. Our findings also show that Idylla can be effectively conducted with isolated RNA, broadening its applicability beyond tissue samples. Although the Idylla assay may not replace more comprehensive molecular assays such as Archer, it could serve as a valuable initial screening tool in diagnosing spitzoid melanocytic tumors.
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Affiliation(s)
- Chiel F Ebbelaar
- Department of Pathology, Division of Laboratories, Pharmacy and Biomedical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands; Department of Dermatology, Leiden University Medical Center, Leiden, The Netherlands.
| | - Marijke van Dijk
- Department of Pathology, Division of Laboratories, Pharmacy and Biomedical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Gerben E Breimer
- Department of Pathology, Division of Laboratories, Pharmacy and Biomedical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Ruud W J Meijers
- Department of Pathology, Division of Laboratories, Pharmacy and Biomedical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Laura B C Klein
- Department of Pathology, Division of Laboratories, Pharmacy and Biomedical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Maryleen M Petronilia
- Department of Pathology, Division of Laboratories, Pharmacy and Biomedical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Wendy W J de Leng
- Department of Pathology, Division of Laboratories, Pharmacy and Biomedical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Willeke A M Blokx
- Department of Pathology, Division of Laboratories, Pharmacy and Biomedical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Anne M L Jansen
- Department of Pathology, Division of Laboratories, Pharmacy and Biomedical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
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2
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Vargas AC, Joy C, Maclean FM, Bonar F, Wong DD, Gill AJ, Cheah AL. Kinase expression in angiomatoid fibrous histiocytoma: panTRK is commonly expressed in the absence of NTRK rearrangement. J Clin Pathol 2024; 77:251-254. [PMID: 38053271 DOI: 10.1136/jcp-2023-209225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 11/12/2023] [Indexed: 12/07/2023]
Abstract
Angiomatoid fibrous histiocytoma (AFH) is a soft tissue tumour of intermediate (rarely metastasising) malignant potential, which harbours EWSR1/FUS gene fusions. These tumours can express anaplastic lymphoma kinase (ALK) in the absence of gene rearrangement or copy number alteration and can also coexpresses Pan-TRK immunohistochemistry (IHC). All EWSR1/FUS-rearranged AFH were retrieved from the files of three institutions and Pan-TRK (EPR17341), ALK and BRAF V600E IHC were performed. Fourteen AFH cases were identified, which included three cases of intracranial mesenchymal tumours with FET-CREB fusions. PanTRK and ALK positive immunostaining was identified in 9 (64.2%) and 12 (85.7%) cases, respectively. No NTRK or ALK translocations or increased copy number/amplification were identified in all eight cases which had fluorescence in situ hybridisation and/or next generation sequencing for NTRK1-3 and ALK available for assessment. None of the cases expressed BRAF-V600E.Although our study is limited, our report is the first to document PanTRK expression in AFH in the absence of identifiable NTRK1-3 gene alterations.
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Affiliation(s)
- Ana Cristina Vargas
- The University of Sydney, Sydney, New South Wales, Australia
- Douglass Hanly Moir Pathology, North Ryde, New South Wales, Australia
| | - Christopher Joy
- Sullivan Nicolaides Pathology Central Laboratory Bowen Hills, Fortitude Valley, Queensland, Australia
| | - Fiona M Maclean
- Douglass Hanly Moir Pathology, North Ryde, New South Wales, Australia
| | - Fiona Bonar
- Douglass Hanly Moir Pathology, North Ryde, New South Wales, Australia
| | - Daniel D Wong
- PathWest Laboratory Medical WA, Nedlands, Western Australia, Australia
| | - Anthony J Gill
- The University of Sydney, Sydney, New South Wales, Australia
- Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Alison L Cheah
- Douglass Hanly Moir Pathology, North Ryde, New South Wales, Australia
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3
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Hernandez S, Conde E, Molero A, Suarez-Gauthier A, Martinez R, Alonso M, Plaza C, Camacho C, Chantada D, Juaneda-Magdalena L, Garcia-Toro E, Saiz-Lopez P, Rojo F, Abad M, Boni V, Del Carmen S, Regojo RM, Sanchez-Frias ME, Teixido C, Paz-Ares L, Lopez-Rios F. Efficient Identification of Patients With NTRK Fusions Using a Supervised Tumor-Agnostic Approach. Arch Pathol Lab Med 2024; 148:318-326. [PMID: 37270803 DOI: 10.5858/arpa.2022-0443-oa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2023] [Indexed: 06/06/2023]
Abstract
CONTEXT.— The neurotrophic tropomyosin receptor kinase (NTRK) family gene rearrangements have been recently incorporated as predictive biomarkers in a "tumor-agnostic" manner. However, the identification of these patients is extremely challenging because the overall frequency of NTRK fusions is below 1%. Academic groups and professional organizations have released recommendations on the algorithms to detect NTRK fusions. The European Society for Medical Oncology proposal encourages the use of next-generation sequencing (NGS) if available, or alternatively immunohistochemistry (IHC) could be used for screening with NGS confirmation of all positive IHC results. Other academic groups have included histologic and genomic information in the testing algorithm. OBJECTIVE.— To apply some of these triaging strategies for a more efficient identification of NTRK fusions within a single institution, so pathologists can gain practical insight on how to start looking for NTRK fusions. DESIGN.— A multiparametric strategy combining histologic (secretory carcinomas of the breast and salivary gland; papillary thyroid carcinomas; infantile fibrosarcoma) and genomic (driver-negative non-small cell lung carcinomas, microsatellite instability-high colorectal adenocarcinomas, and wild-type gastrointestinal stromal tumors) triaging was put forward. RESULTS.— Samples from 323 tumors were stained with the VENTANA pan-TRK EPR17341 Assay as a screening method. All positive IHC cases were simultaneously studied by 2 NGS tests, Oncomine Comprehensive Assay v3 and FoundationOne CDx. With this approach, the detection rate of NTRK fusions was 20 times higher (5.57%) by only screening 323 patients than the largest cohort in the literature (0.30%) comprising several hundred thousand patients. CONCLUSIONS.— Based on our findings, we propose a multiparametric strategy (ie, "supervised tumor-agnostic approach") when pathologists start searching for NTRK fusions.
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Affiliation(s)
- Susana Hernandez
- From the Department of Pathology, 12 de Octubre University Hospital, Research Institute 12 de Octubre University Hospital (i+12), Madrid, Spain (Hernandez, Alonso)
| | - Esther Conde
- the Department of Pathology, 12 de Octubre University Hospital, Universidad Complutense de Madrid, Research Institute 12 de Octubre University Hospital (i+12), CIBERONC, Madrid, Spain (Conde, Lopez-Rios)
| | - Aida Molero
- the Department of Pathology, Segovia General Hospital, Segovia, Spain (Molero)
| | - Ana Suarez-Gauthier
- the Department of Pathology, Jimenez Diaz Foundation University Hospital, Madrid, Spain (Suarez-Gauthier)
| | - Rebeca Martinez
- the Department of Pathology, Health Diagnostic-Grupo Quiron Salud, Madrid, Spain (Martinez)
| | - Marta Alonso
- From the Department of Pathology, 12 de Octubre University Hospital, Research Institute 12 de Octubre University Hospital (i+12), Madrid, Spain (Hernandez, Alonso)
| | - Carlos Plaza
- the Department of Pathology, Clinico San Carlos University Hospital, Madrid, Spain (Plaza)
| | - Carmen Camacho
- the Department of Pathology, Insular Materno-Infantil University Hospital, Las Palmas de Gran Canaria, Spain (Camacho)
| | - Debora Chantada
- the Department of Pathology, Alvaro Cunqueiro Hospital, Vigo, Spain (Chantada, Juaneda-Magdalena)
| | - Laura Juaneda-Magdalena
- the Department of Pathology, Alvaro Cunqueiro Hospital, Vigo, Spain (Chantada, Juaneda-Magdalena)
| | - Enrique Garcia-Toro
- the Department of Pathology, Burgos University Hospital, Burgos, Spain (Garcia-Toro, Saiz-Lopez)
| | - Patricia Saiz-Lopez
- the Department of Pathology, Burgos University Hospital, Burgos, Spain (Garcia-Toro, Saiz-Lopez)
| | - Federico Rojo
- the Institute of Health Research-Jimenez Diaz Foundation, CIBERONC, Madrid, Spain (Rojo)
| | - Mar Abad
- the Department of Pathology, Salamanca University Hospital, Salamanca, Spain (Abad)
| | - Valentina Boni
- NEXT Oncology Madrid, Quiron Salud Madrid University Hospital, Madrid, Spain (Boni)
| | - Sofia Del Carmen
- the Department of Pathology, Marques de Valdecilla University Hospital, Santander, Spain (del Carmen)
| | - Rita Maria Regojo
- the Department of Pathology, La Paz University Hospital, Madrid, Spain (Regojo)
| | | | - Cristina Teixido
- the Department of Pathology, Thoracic Oncology Unit, Hospital Clínic of Barcelona, University of Barcelona, Barcelona, Spain (Teixido)
| | - Luis Paz-Ares
- the Department of Oncology, 12 de Octubre University Hospital, Department of Medicine, Universidad Complutense de Madrid, Research Institute 12 de Octubre University Hospital (i+12), CIBERONC, Madrid, Spain (Paz-Ares)
| | - Fernando Lopez-Rios
- the Department of Pathology, 12 de Octubre University Hospital, Universidad Complutense de Madrid, Research Institute 12 de Octubre University Hospital (i+12), CIBERONC, Madrid, Spain (Conde, Lopez-Rios)
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Daruish M, Ambrogio F, Colagrande A, Marzullo A, Alaggio R, Trilli I, Ingravallo G, Cazzato G. Kinase Fusions in Spitz Melanocytic Tumors: The Past, the Present, and the Future. Dermatopathology (Basel) 2024; 11:112-123. [PMID: 38390852 PMCID: PMC10885070 DOI: 10.3390/dermatopathology11010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/05/2024] [Accepted: 02/08/2024] [Indexed: 02/24/2024] Open
Abstract
In recent years, particular interest has developed in molecular biology applied to the field of dermatopathology, with a focus on nevi of the Spitz spectrum. From 2014 onwards, an increasing number of papers have been published to classify, stratify, and correctly frame molecular alterations, including kinase fusions. In this paper, we try to synthesize the knowledge gained in this area so far. In December 2023, we searched Medline and Scopus for case reports and case series, narrative and systematic reviews, meta-analyses, observational studies-either longitudinal or historical, case series, and case reports published in English in the last 15 years using the keywords spitzoid neoplasms, kinase fusions, ALK, ROS1, NTRK (1-2-3), MET, RET, MAP3K8, and RAF1. ALK-rearranged Spitz tumors and ROS-1-rearranged tumors are among the most studied and characterized entities in the literature, in an attempt (although not always successful) to correlate histopathological features with the probable molecular driver alteration. NTRK-, RET-, and MET-rearranged Spitz tumors present another studied and characterized entity, with several rearrangements described but as of yet incomplete information about their prognostic significance. Furthermore, although rarer, rearrangements of serine-threonine kinases such as BRAF, RAF1, and MAP3K8 have also been described, but more cases with more detailed information about possible histopathological alterations, mechanisms of etiopathogenesis, and also prognosis are needed. The knowledge of molecular drivers is of great interest in the field of melanocytic diagnostics, and it is important to consider that in addition to immunohistochemistry, molecular techniques such as FISH, PCR, and/or NGS are essential to confirm and classify the different patterns of mutation. Future studies with large case series and molecular sequencing techniques are needed to allow for a more complete and comprehensive understanding of the role of fusion kinases in the spitzoid tumor family.
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Affiliation(s)
- Maged Daruish
- Dorset County Hospital NHS Foundation Trust, Dorchester DT1 2JY, UK
| | - Francesca Ambrogio
- Section of Dermatology and Venereology, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari "Aldo Moro", 70124 Bari, Italy
| | - Anna Colagrande
- Section of Molecular Pathology, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari "Aldo Moro", 70124 Bari, Italy
| | - Andrea Marzullo
- Section of Molecular Pathology, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari "Aldo Moro", 70124 Bari, Italy
| | - Rita Alaggio
- Pathology Unit, Department of Laboratories, Bambino Gesù Children's Hospital, IRCCS, 00165 Rome, Italy
| | - Irma Trilli
- Department of Interdisciplinary Medicine, University of Bari "Aldo Moro", 70124 Bari, Italy
| | - Giuseppe Ingravallo
- Section of Molecular Pathology, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari "Aldo Moro", 70124 Bari, Italy
| | - Gerardo Cazzato
- Section of Molecular Pathology, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari "Aldo Moro", 70124 Bari, Italy
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Zhang W, Schmitz AA, Kallionpää RE, Perälä M, Pitkänen N, Tukiainen M, Alanne E, Jöhrens K, Schulze-Rath R, Farahmand B, Zong J. Neurotrophic-tyrosine receptor kinase gene fusion in papillary thyroid cancer: A clinicogenomic biobank and record linkage study from Finland. Oncotarget 2024; 15:106-116. [PMID: 38329731 PMCID: PMC10852057 DOI: 10.18632/oncotarget.28555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 12/28/2023] [Indexed: 02/09/2024] Open
Abstract
Selective tropomyosin receptor kinase (TRK) inhibitors are approved targeted therapies for patients with solid tumors harboring a neurotrophic tyrosine receptor kinase (NTRK) gene fusion. Country-specific estimates of NTRK gene fusion frequency, and knowledge on the characteristics of affected patients, are limited. We identified patients with histologically-confirmed papillary thyroid cancer (PTC) from Finland's Auria Biobank. TRK protein expression was determined by pan-TRK immunohistochemistry. Immuno-stained tumor samples were scored by a certified pathologist. Gene fusions and other co-occurring gene alterations were identified by next generation sequencing. Patient characteristics and vital status were determined from linked hospital electronic health records (EHRs). Patients were followed from 1 year before PTC diagnosis until death. 6/389 (1.5%) PTC patients had an NTRK gene fusion (all NTRK3); mean age 43.8 years (and none had comorbidities) at PTC diagnosis. Gene fusion partners were EML4 (n = 3), ETV6 (n = 2), and RBPMS (n = 1). Of 3/6 patients with complete EHRs, all received radioactive iodine ablation only and were alive at end of follow-up (median observation, 9.12 years). In conclusion, NTRK gene fusion is infrequent in patients with PTC. Linkage of biobank samples to EHRs is feasible in describing the characteristics and outcomes of patients with PTC and potentially other cancer types.
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Affiliation(s)
- Wei Zhang
- Bayer HealthCare Pharmaceuticals Inc, Whippany, NJ 07981, USA
| | | | - Roosa E. Kallionpää
- Auria Biobank, Turku University Hospital, University of Turku, Turku, Finland
| | - Merja Perälä
- Auria Biobank, Turku University Hospital, University of Turku, Turku, Finland
| | - Niina Pitkänen
- Auria Biobank, Turku University Hospital, University of Turku, Turku, Finland
| | - Mikko Tukiainen
- Auria Biobank, Turku University Hospital, University of Turku, Turku, Finland
| | - Erika Alanne
- Department of Oncology and Radiotherapy, Turku University Hospital, Turku, Finland
- Western Finland Cancer Centre, Turku, Finland
| | - Korinna Jöhrens
- Dresden University Hospital, Technical University Dresden, Dresden, Germany
| | | | | | - Jihong Zong
- Bayer HealthCare Pharmaceuticals Inc, Whippany, NJ 07981, USA
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6
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Moura MS, Costa J, Velasco V, Kommoss F, Oliva E, Le Loarer F, McCluggage WG, Razack R, Treilleux I, Mills A, Longacre T, Devouassoux-Shisheboran M, Hostein I, Azmani R, Blanchard L, Hartog C, Soubeyran I, Khalifa E, Croce S. Pan-TRK immunohistochemistry in gynaecological mesenchymal tumours: diagnostic implications and pitfalls. Histopathology 2024; 84:451-462. [PMID: 37988282 DOI: 10.1111/his.15082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/22/2023] [Accepted: 10/14/2023] [Indexed: 11/23/2023]
Abstract
AIMS NTRK-rearranged sarcomas of the female genital tract mainly occur in the uterus (more commonly cervix than corpus) and are characterized by a "fibrosarcoma-like" morphology and NTRK gene rearrangements. These neoplasms may exhibit histological overlap with other entities and can present diagnostic difficulties without molecular confirmation. Pan-TRK immunohistochemistry was developed to identify tumours harbouring NTRK rearrangements. The aim of this study was to characterize pan-TRK immunohistochemical expression in a large cohort of gynaecological mesenchymal neoplasms and investigate the utility of pan-TRK immunohistochemistry to distinguish NTRK-rearranged sarcoma from its mimics. METHODS AND RESULTS A total of 473 gynaecological mesenchymal tumours (461 without known NTRK fusions and 12 NTRK-rearranged sarcomas) were selected. Pan-TRK immunohistochemistry (EPR17341, Abcam) was performed on whole tissue sections and tissue microarrays. Molecular interrogation of pan-TRK positive tumours was performed by RNA sequencing or fluorescence in situ hybridization (FISH). Of the 12 NTRK-rearranged sarcomas, 11 (92%) exhibited diffuse (≥70%) cytoplasmic pan-TRK staining with moderate/marked intensity, while the other was negative. Eleven (2.4%) additional tumours also exhibited pan-TRK immunohistochemical expression: three low-grade endometrial stromal sarcomas, seven high-grade endometrial stromal sarcomas, and an undifferentiated uterine sarcoma. Molecular confirmation of the absence of NTRK rearrangements was possible in nine of these tumours. Of these nine neoplasms, seven exhibited focal/multifocal (<70%) pan-TRK cytoplasmic staining with weak/moderate intensity. CONCLUSION Even though pan-TRK immunohistochemical expression is not entirely sensitive or specific for NTRK-rearranged sarcomas, these neoplasms tend to exhibit diffuse staining of moderate/strong intensity, unlike its mimics. Pan-TRK should be performed in monomorphic uterine (corpus and cervix) spindle cell neoplasms that are negative for smooth muscle markers and hormone receptors and positive for CD34 and/ or S100. Ultimately, the diagnosis requires molecular confirmation.
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Affiliation(s)
- Madalena Souto Moura
- Department of Pathology, Portuguese Institute of Oncology-Porto, Porto, Portugal
| | - João Costa
- Department of Pathology, Portuguese Institute of Oncology-Porto, Porto, Portugal
| | - Valérie Velasco
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Centre, Bordeaux, France
| | - Felix Kommoss
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
| | - Esther Oliva
- Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Francois Le Loarer
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Centre, Bordeaux, France
- Inserm U1312, Université de Bordeaux, Bordeaux, France
- Université de Bordeaux, Talence, France
| | - W Glenn McCluggage
- Department of Pathology, Belfast Health and Social Care Trust, Belfast, UK
| | - Rubina Razack
- Division of Anatomical Pathology, National Health Laboratory Service, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg Academic Hospital, Cape Town, South Africa
| | | | - Anne Mills
- Department of Pathology, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Teri Longacre
- Department of Surgical Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | | | - Isabelle Hostein
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Centre, Bordeaux, France
| | - Rihab Azmani
- Bioinformatics, Data and Digital Health Department, Institut Bergonié, Comprehensive Cancer Centre, Bordeaux, France
| | - Larry Blanchard
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Centre, Bordeaux, France
| | - Cécile Hartog
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Centre, Bordeaux, France
| | - Isabelle Soubeyran
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Centre, Bordeaux, France
| | - Emmanuel Khalifa
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Centre, Bordeaux, France
| | - Sabrina Croce
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Centre, Bordeaux, France
- Inserm U1312, Université de Bordeaux, Bordeaux, France
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7
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Conde E, Hernandez S, Alonso M, Lopez-Rios F. Pan-TRK Immunohistochemistry to Optimize the Detection of NTRK Fusions: Removing the Hay When Looking for the Needle. Mod Pathol 2023; 36:100346. [PMID: 37757968 DOI: 10.1016/j.modpat.2023.100346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 08/17/2023] [Accepted: 09/20/2023] [Indexed: 09/29/2023]
Affiliation(s)
- Esther Conde
- Pathology Department, Hospital Universitario 12 de Octubre, Universidad Complutense de Madrid, Research Institute Hospital 12 de Octubre (i+12), CIBERONC, Madrid, Spain
| | - Susana Hernandez
- Pathology Department, Hospital Universitario 12 de Octubre, Research Institute Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Marta Alonso
- Pathology Department, Hospital Universitario 12 de Octubre, Research Institute Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Fernando Lopez-Rios
- Pathology Department, Hospital Universitario 12 de Octubre, Universidad Complutense de Madrid, Research Institute Hospital 12 de Octubre (i+12), CIBERONC, Madrid, Spain.
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8
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Cuello M, García-Rivello H, Huamán-Garaicoa F, Irigoyen-Piñeiros P, Lara-Torres CO, Rizzo MM, Ticona-Castro M, Trejo R, Zoroquiain P. Detection of NTRK gene fusions in solid tumors: recommendations from a Latin American group of oncologists and pathologists. Future Oncol 2023; 19:2669-2682. [PMID: 38088163 DOI: 10.2217/fon-2023-0552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
Abstract
NTRK gene fusions have been detected in more than 25 types of tumors and their prevalence is approximately 0.3% in solid tumors. This low prevalence makes identifying patients who could benefit from TRK inhibitors a considerable challenge. Furthermore, while numerous papers on the evaluation of NTRK fusion genes are available, not all countries have guidelines that are suitable for their setting, as is the case with Latin America. Therefore, a group of oncologists and pathologists from several countries in Latin America (Argentina, Chile, Ecuador, Mexico, Peru and Uruguay) met to discuss and reach consensus on how to identify patients with NTRK gene fusions in solid tumors. To do so, they developed a practical algorithm, considering their specific situation and limitations.
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Affiliation(s)
- Mauricio Cuello
- Academic Unit of Oncology, Hospital de Clínicas Dr. Manuel Quintela, Montevideo, Uruguay
| | - Hernán García-Rivello
- Departmento of Clinical Pathology, Instituto de Medicina Traslacional e Ingeniería Biomédica (IMTIB), Hospital Italiano, Buenos Aires, Argentina
| | - Fuad Huamán-Garaicoa
- Instituto de Salud Integral (ISAIN), Universidad Católica, Santiago de Guayaquil (Ecuador), Department of Pathology, Sociedad de Lucha Contra el Cáncer del Ecuador (SOLCA), Guayaquil, Ecuador
| | | | - César O Lara-Torres
- Laboratory of Molecular Pathology, Instituto Nacional de Cancerología, Ciudad de México, México
| | - Manglio M Rizzo
- Cancer Immunobiology Laboratory, Instituto de Investigaciones en Medicina Traslacional (IIMT), Facultad de Ciencias Biomédicas, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Austral, Derqui-Pilar, Argentina
- Department of Medical Oncology, Hospital Universitario Austral, Derqui-Pilar, Argentina
| | - Miguel Ticona-Castro
- Service of Medical Oncology, Hospital Nacional Edgardo Rebagliati Martins, EsSalud - Jesús María, Lima (Perú), Clínica Montefiori, La Molina, Lima, Perú
| | - Rogelio Trejo
- Department of Medical Oncology, Centro Médico Nacional Siglo XXI, Ciudad de México, México
| | - Pablo Zoroquiain
- Pathology Department, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
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9
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Romanko AA, Mulkidjan RS, Tiurin VI, Saitova ES, Preobrazhenskaya EV, Krivosheyeva EA, Mitiushkina NV, Shestakova AD, Belogubova EV, Ivantsov AO, Iyevleva AG, Imyanitov EN. Cost-Efficient Detection of NTRK1/2/3 Gene Fusions: Single-Center Analysis of 8075 Tumor Samples. Int J Mol Sci 2023; 24:14203. [PMID: 37762506 PMCID: PMC10531831 DOI: 10.3390/ijms241814203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/26/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
The majority of NTRK1, NTRK2, and NTRK3 rearrangements result in increased expression of the kinase portion of the involved gene due to its fusion to an actively transcribed gene partner. Consequently, the analysis of 5'/3'-end expression imbalances is potentially capable of detecting the entire spectrum of NTRK gene fusions. Archival tumor specimens obtained from 8075 patients were subjected to manual dissection of tumor cells, DNA/RNA isolation, and cDNA synthesis. The 5'/3'-end expression imbalances in NTRK genes were analyzed by real-time PCR. Further identification of gene rearrangements was performed by variant-specific PCR for 44 common NTRK fusions, and, whenever necessary, by RNA-based next-generation sequencing (NGS). cDNA of sufficient quality was obtained in 7424/8075 (91.9%) tumors. NTRK rearrangements were detected in 7/6436 (0.1%) lung carcinomas, 11/137 (8.0%) pediatric tumors, and 13/851 (1.5%) adult non-lung malignancies. The highest incidence of NTRK translocations was observed in pediatric sarcomas (7/39, 17.9%). Increased frequency of NTRK fusions was seen in microsatellite-unstable colorectal tumors (6/48, 12.5%), salivary gland carcinomas (5/93, 5.4%), and sarcomas (7/143, 4.9%). None of the 1293 lung carcinomas with driver alterations in EGFR/ALK/ROS1/RET/MET oncogenes had NTRK 5'/3'-end expression imbalances. Variant-specific PCR was performed for 744 tumors with a normal 5'/3'-end expression ratio: there were no rearrangements in 172 EGFR/ALK/ROS1/RET/MET-negative lung cancers and 125 pediatric tumors, while NTRK3 fusions were detected in 2/447 (0.5%) non-lung adult malignancies. In conclusion, this study describes a diagnostic pipeline that can be used as a cost-efficient alternative to conventional methods of NTRK1-3 analysis.
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Affiliation(s)
- Aleksandr A. Romanko
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia (V.I.T.)
| | - Rimma S. Mulkidjan
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia (V.I.T.)
| | - Vladislav I. Tiurin
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia (V.I.T.)
| | - Evgeniya S. Saitova
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia (V.I.T.)
| | - Elena V. Preobrazhenskaya
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia (V.I.T.)
- Department of Medical Genetics, St.-Petersburg Pediatric Medical University, 194100 St.-Petersburg, Russia
| | - Elena A. Krivosheyeva
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia (V.I.T.)
| | - Natalia V. Mitiushkina
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia (V.I.T.)
| | - Anna D. Shestakova
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia (V.I.T.)
| | - Evgeniya V. Belogubova
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia (V.I.T.)
| | - Alexandr O. Ivantsov
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia (V.I.T.)
| | - Aglaya G. Iyevleva
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia (V.I.T.)
- Department of Medical Genetics, St.-Petersburg Pediatric Medical University, 194100 St.-Petersburg, Russia
| | - Evgeny N. Imyanitov
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia (V.I.T.)
- Department of Medical Genetics, St.-Petersburg Pediatric Medical University, 194100 St.-Petersburg, Russia
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10
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Zito Marino F, Buono S, Montella M, Giannatiempo R, Messina F, Casaretta G, Arpino G, Vita G, Fiorentino F, Insabato L, Sgambato A, Orditura M, Franco R, Accardo M. NTRK gene aberrations in triple-negative breast cancer: detection challenges using IHC, FISH, RT-PCR, and NGS. J Pathol Clin Res 2023; 9:367-377. [PMID: 37143440 PMCID: PMC10397374 DOI: 10.1002/cjp2.324] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 03/31/2023] [Accepted: 04/07/2023] [Indexed: 05/06/2023]
Abstract
Triple-negative breast cancer (TNBC) is usually an aggressive disease with a poor prognosis and limited treatment options. The neurotrophic tyrosine receptor kinase (NTRK) gene fusions are cancer type-agnostic emerging biomarkers approved by the Food and Drug Administration (FDA), USA, for the selection of patients for targeted therapy. The main aim of our study was to investigate the frequency of NTRK aberrations, i.e. fusions, gene copy number gain, and amplification, in a series of TNBC using different methods. A total of 83 TNBCs were analyzed using pan-TRK immunohistochemistry (IHC), fluorescence in situ hybridization (FISH), real-time polymerase chain reaction (RT-PCR), and RNA-based next-generation sequencing (NGS). Of 83 cases, 16 showed pan-TRK positivity although no cases had NTRK-fusions. Indeed, FISH showed four cases carrying an atypical NTRK1 pattern consisting of one fusion signal and one/more single green signals, but all cases were negative for fusion by NGS and RT-PCR testing. In addition, FISH analysis showed six cases with NTRK1 amplification, one case with NTRK2 copy number gain, and five cases with NTRK3 copy number gain, all negative for pan-TRK IHC. Our data demonstrate that IHC has a high false-positive rate for the detection of fusions and molecular testing is mandatory; there is no need to perform additional molecular tests in cases negativity for NTRK by IHC. In conclusion, the NTRK genes are not involved in fusions in TNBC, but both copy number gain and amplification are frequent events, suggesting a possible predictive role for other NTRK aberrations.
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Affiliation(s)
- Federica Zito Marino
- Pathology Unit, Department of Mental and Physical Health and Preventive MedicineUniversity of Campania “L. Vanvitelli”NaplesItaly
| | - Simona Buono
- Pathology Unit, Department of Mental and Physical Health and Preventive MedicineUniversity of Campania “L. Vanvitelli”NaplesItaly
| | - Marco Montella
- Pathology Unit, Department of Mental and Physical Health and Preventive MedicineUniversity of Campania “L. Vanvitelli”NaplesItaly
| | | | | | | | - Grazia Arpino
- Department of Clinical Medicine and SurgeryUniversity of Naples Federico IINaplesItaly
| | - Giulia Vita
- Anatomical Pathology Department, IRCCS CROBRionero in VultureItaly
| | | | - Luigi Insabato
- Department of Advanced Biomedical Sciences, Pathology SectionUniversity of Naples “Federico II”NaplesItaly
| | - Alessandro Sgambato
- Scientific Direction, Centro di Riferimento Oncologico della Basilicata (IRCCS‐CROB)Rionero in VultureItaly
| | - Michele Orditura
- Division of Medical Oncology, Department of Precision Medicine, School of MedicineUniversity of Campania “L. Vanvitelli”NaplesItaly
| | - Renato Franco
- Pathology Unit, Department of Mental and Physical Health and Preventive MedicineUniversity of Campania “L. Vanvitelli”NaplesItaly
| | - Marina Accardo
- Pathology Unit, Department of Mental and Physical Health and Preventive MedicineUniversity of Campania “L. Vanvitelli”NaplesItaly
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11
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Adam J, Stang NL, Uguen A, Badoual C, Chenard MP, Lantuéjoul S, Maran-Gonzalez A, Robin YM, Rochaix P, Sabourin JC, Soubeyran I, Sturm N, Svrcek M, Vincent-Salomon A, Radosevic-Robin N, Penault-Llorca F. Multicenter Harmonization Study of Pan-Trk Immunohistochemistry for the Detection of NTRK3 Fusions. Mod Pathol 2023; 36:100192. [PMID: 37084942 DOI: 10.1016/j.modpat.2023.100192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 03/14/2023] [Accepted: 04/12/2023] [Indexed: 04/23/2023]
Abstract
Pan-Trk immunohistochemistry has been described as a screening test for the detection of NTRK fusions in a broad spectrum of tumor types. However, pan-Trk testing in the clinical setting may be limited by many factors, including analytical parameters such as clones, platforms, and protocols used. This study aimed to harmonize pan-Trk testing using various clones and immunohistochemical (IHC) platforms and to evaluate the level of analytical variability across pathology laboratories. We developed several IHC pan-Trk assays using clones EPR17341 (Abcam) and A7H6R (Cell Signaling Technology) on Ventana/Roche, Agilent, and Leica platforms. To compare them, we sent unstained sections of a tissue microarray containing 9 cases with NTRK3 fusions to participating laboratories, to perform staining on Ventana/Roche (10 centers), Agilent (4 centers), and Leica (3 centers) platforms. A ready-to-use pan-Trk IVD assay (Ventana/Roche) was also performed in 3 centers. All slides were centrally and blindly reviewed for the percentage of stained tumor cells. Laboratory-developed tests with clone EPR17341 were able to detect pan-Trk protein expression in all cases, whereas lower rates of positivity were observed with clone A7H6R. Moderate to strong variability of the positive cases rate was observed with both antibodies in each IHC platforms type and each of the positivity cut points evaluated (≥1%, ≥10%, and ≥50% of stained tumor cells). The rate of false-negative cases was lower when pan-Trk staining was assessed with the lowest positivity threshold (≥1%). In conclusion, most evaluated pan-Trk IHC laboratory-developed tests were able to detect NTRK3-fusion proteins; however, a significant analytical variability was observed between antibodies, platforms, and centers.
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Affiliation(s)
- Julien Adam
- Pathology Department, Groupe Hospitalier Paris Saint-Joseph, Paris, and Inserm U1186, Gustave Roussy, Villejuif, France.
| | - Nolwenn Le Stang
- National Reference Center Mesopath, Centre Leon Berard, Lyon, France; Now with General Cancer Registry of Poitou-Charentes, Biology, Pharmacy and Public Health Unit, University Hospital, Poitiers, France
| | - Arnaud Uguen
- LBAI-UMR1227 - Inserm & Department of Pathology, CHU de Brest, Université de Brest, Brest, France
| | | | | | - Sylvie Lantuéjoul
- Université de Grenoble Alpes, Grenoble and Pathology Department, Centre Leon Berard, Lyon, France
| | | | | | | | | | | | | | - Magali Svrcek
- Pathology Department, Hôpital Saint-Antoine, AP-HP, Paris, France
| | | | - Nina Radosevic-Robin
- Pathology Department, Centre Jean Perrin, Clermont-Ferrand, France; University Clermont Auvergne, INSERM U1240, Clermont-Ferrand, France
| | - Frédérique Penault-Llorca
- Pathology Department, Centre Jean Perrin, Clermont-Ferrand, France; University Clermont Auvergne, INSERM U1240, Clermont-Ferrand, France
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12
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Nguyen MA, Colebatch AJ, Van Beek D, Tierney G, Gupta R, Cooper WA. NTRK fusions in solid tumours: what every pathologist needs to know. Pathology 2023:S0031-3025(23)00128-9. [PMID: 37330338 DOI: 10.1016/j.pathol.2023.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 04/30/2023] [Accepted: 05/03/2023] [Indexed: 06/19/2023]
Abstract
Fusions involving the Neurotrophic tropomyosin receptor kinase (NTRK) gene family (NTRK1, NTRK2 and NTRK3) are targetable oncogenic alterations that are found in a diverse range of tumours. There is an increasing demand to identify tumours which harbour these fusions to enable treatment with selective tyrosine kinase inhibitors such as larotrectinib and entrectinib. NTRK fusions occur in a wide range of tumours including rare tumours such as infantile fibrosarcoma and secretory carcinomas of the salivary gland and breast, as well as at low frequencies in more common tumours including melanoma, colorectal, thyroid and lung carcinomas. Identifying NTRK fusions is a challenging task given the different genetic mechanisms underlying NTRK fusions, their varying frequency across different tumour types, complicated by other factors such as tissue availability, optimal detection methods, accessibility and costs of testing methods. Pathologists play a key role in navigating through these complexities by determining optimal approaches to NTRK testing which has important therapeutic and prognostic implications. This review provides an overview of tumours harbouring NTRK fusions, the importance of identifying these fusions, available testing methods including advantages and limitations, and generalised and tumour-specific approaches to testing.
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Affiliation(s)
- Minh Anh Nguyen
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Andrew J Colebatch
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Diana Van Beek
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Geraldine Tierney
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Ruta Gupta
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Wendy A Cooper
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia; School of Medicine, Western Sydney University, Sydney, NSW, Australia.
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13
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Ghandili S, Dierlamm J, Bokemeyer C, von Bargen CM, Weidemann SA. NTRK fusion protein expression is absent in a large cohort of diffuse large B-cell lymphoma. Front Oncol 2023; 13:1146029. [PMID: 36998460 PMCID: PMC10043297 DOI: 10.3389/fonc.2023.1146029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 03/06/2023] [Indexed: 03/16/2023] Open
Abstract
BackgroundEven though two NTRK-targeting drugs are available for the treatment of irresectable, metastatic, or progressive NTRK-positive solid tumors, less is known about the role of NTRK fusions in lymphoma. For this reason, we aimed to investigate if NTRK fusion proteins are expressed in diffuse large B-cell lymphoma (DLBCL) by systemic immunohistochemistry (IHC) screening and additional FISH analysis in a large cohort of DLBCL samples according to the ESMO Translational Research and Precision Medicine Working Group recommendations for the detection of NTRK fusions in daily practice and clinical research.MethodsA tissue microarray of 92 patients with the diagnosis of DLBCL at the University Hospital Hamburg between 2020 and 2022 was built. The clinical data were taken from patient records. Immunohistochemistry for Pan-NTRK fusion protein was performed and positive staining was defined as any viable staining. For FISH analysis only results with quality 2 and 3 were evaluated.ResultsNTRK immunostaining was absent in all analyzable cases. No break apart was detectable by FISH.ConclusionOur negative result is consistent with the very sparse data existing on NTRK gene fusions in hematologic neoplasms. To date, only a few cases of hematological malignancies have been described in which NTRK-targeting drugs may provide a potential therapeutic agent. Even though NTRK fusion protein expression was not detectable in our sample cohort, performing systemic screenings for NTRK fusions are necessary to define further the role of NTRK fusions not only in DLBCL but in a multitude of lymphoma entities as long as the lack of reliable data exists.
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Affiliation(s)
- Susanne Ghandili
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, University Cancer Center Hamburg, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- *Correspondence: Susanne Ghandili,
| | - Judith Dierlamm
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, University Cancer Center Hamburg, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Carsten Bokemeyer
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, University Cancer Center Hamburg, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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14
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Haberecker M, Töpfer A, Melega F, Moch H, Pauli C. A systematic comparison of pan-Trk immunohistochemistry assays among multiple cancer types. Histopathology 2023; 82:1003-1012. [PMID: 36759438 DOI: 10.1111/his.14884] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/19/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023]
Abstract
AIMS NTRK rearranged tumours are rare but can be successfully treated using anti-TRK-targeted therapies, making NTRK testing important for treatment choices in patients with advanced cancers. Pan-Trk immunohistochemistry (IHC) has become a valuable and affordable screening tool in many laboratories. Unfortunately, the choice of antibodies and IHC protocols to investigate biomarkers is not standardised. In this study, we compared the performance of four pan-Trk IHC methods, using three different clones, primarily in NTRK fusion-positive tumours. METHODS AND RESULTS We studied the performance of four pan-Trk IHC methods using three different clones: EPR17341 (Abcam and Ventana), EP1058Y (Abcam) and A7H6R (Cell Signaling) in 22 molecularly confirmed NTRK rearranged tumours. Additionally, selected NTRK fusion-negative tumours were further included: NTRK mutated (n = 8) and amplified (n = 15) tumours as well as NTRK fusion-negative tumours driven by other gene fusions, such as ALK, ROS1 and BCOR (n = 20), as well as salivary gland tumours (n = 16). Inter-rater agreement of three pathologists was additionally calculated, including H-score. With clone EPR17341 (Abcam in-house and ready-to-use Ventana protocol), all molecularly confirmed NTRK1-3 rearranged tumours were positively detected by immunohistochemistry, while the other clones missed NTRK2-3 rearranged tumours. For the fusion-negative cohort we found the best performance (least false-positive cases) using the clone A7H6R (Cell Signalling). CONCLUSION Given the therapeutic importance, testing for NTRK rearrangements in daily practice has become necessary and, despite IHC being a fast and affordable tool, using it in routine diagnostics is complicated and requires a high level of expertise.
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Affiliation(s)
- Martina Haberecker
- Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Antonia Töpfer
- Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Francesca Melega
- Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Holger Moch
- Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland.,Medical Faculty, University Zurich, Zurich, Switzerland
| | - Chantal Pauli
- Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland.,Medical Faculty, University Zurich, Zurich, Switzerland
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Vingiani A, Lorenzini D, Conca E, Volpi CC, Trupia DV, Gloghini A, Perrone F, Tamborini E, Dagrada GP, Agnelli L, Capone I, Busico A, Pruneri G. Pan-TRK immunohistochemistry as screening tool for NTRK fusions: A diagnostic workflow for the identification of positive patients in clinical practice. Cancer Biomark 2023; 38:301-309. [PMID: 37545217 DOI: 10.3233/cbm-220357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
BACKGROUND Pan-TRK inhibitors Entrectinib and Larotrectinib have been recently approved as tumor-agnostic therapies in NTRK1-2-3 rearranged patients and there is therefore an urgent need to identify reliable and accessible biomarkers for capturing NTRK fusions in the real-world practice. OBJECTIVE We aim to assess the analytical validity of the recently released pan-TRK assay (Ventana), running a head-to-head comparison between immunohistochemistry and Archer FusionPlex Lung Panel (ArcherDX) that is designed to detect key fusions in 13 genes, also including NTRK1-3. METHODS Pan-TRK IHC and NGS analysis were conducted on a retrospective/prospective cohort of 124 cancer patients (carcinomas, 93 cases; soft tissue sarcomas, 19; primary central nervous system tumours, 10; and neuroblastomas, 2). FISH data were available in most of the IHC/NGS discordant cases. RESULTS A comparison between IHC and NGS results was carried out in 117 cases: among 30 pan-TRK positive cases, NTRK rearrangement by NGS was found in 11 (37%), while one of the 87 (1.1%) pan-TRK negative cases (a case of NSCLC) showed a TPM3-NRTK1 rearrangement by NGS. Accordingly, sensitivity and specificity of IHC in predicting NTRK status were 91.7% and 81.9%, respectively, while negative (NPV) and positive predictive value (PPV) were 98.8% and 36.7%, respectively. CONCLUSIONS These data lead to suggest that IHC with VENTANA pan-TRK antibody can be a reliable screening tool for the identification of patients potentially bearing NTRK rearranged tumours.
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Affiliation(s)
- Andrea Vingiani
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
- Department of Oncology and Hematoncology, University of Milan, Milan, Italy
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
| | - Daniele Lorenzini
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
| | - Elena Conca
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
| | - Chiara Costanza Volpi
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
| | - Desirè Viola Trupia
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
| | - Annunziata Gloghini
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
| | - Federica Perrone
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
| | - Elena Tamborini
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
| | - Gian Paolo Dagrada
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
| | - Luca Agnelli
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
| | - Iolanda Capone
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
| | - Adele Busico
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
- Department of Oncology and Hematoncology, University of Milan, Milan, Italy
| | - Giancarlo Pruneri
- Department of Diagnostic Innovation, Foundation IRCCS National Cancer Institute, Milan, Italy
- Department of Oncology and Hematoncology, University of Milan, Milan, Italy
- Department of Oncology and Hematoncology, University of Milan, Milan, Italy
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16
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Petaccia de Macedo M, Toledo Nascimento EC, Soares FA, Costa Santini F, D'Almeida Costa F, Werneck da Cunha I, Ramella Munhoz R, De Marchi P, Carnier Jorge TW, Ramos Moreira Leite K. Brazilian Expert Consensus for NTRK Gene Fusion Testing in Solid Tumors. CLINICAL PATHOLOGY (THOUSAND OAKS, VENTURA COUNTY, CALIF.) 2023; 16:2632010X231197080. [PMID: 37719804 PMCID: PMC10504829 DOI: 10.1177/2632010x231197080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 07/31/2023] [Indexed: 09/19/2023]
Abstract
Oncogenic neurotrophic tropomyosin receptor kinase gene fusions occur in less than 1% of common cancers. These mutations have emerged as new biomarkers in cancer genomic profiling with the approval of selective drugs against tropomyosin receptor kinase fusion proteins. Nevertheless, the optimal pathways and diagnostic platforms for this biomarker's screening and genomic profiling have not been defined and remain a subject of debate. A panel of national experts in molecular cancer diagnosis and treatment was convened by videoconference and suggested topics to be addressed in the literature review. The authors proposed a testing algorithm for oncogenic neurotrophic tropomyosin receptor kinase gene fusion screening and diagnosis for the Brazilian health system. This review aims to discuss the latest literature evidence and international consensus on neurotrophic tropomyosin receptor kinase gene fusion diagnosis to devise clinical guidelines for testing this biomarker. We propose an algorithm in which testing for this biomarker should be requested to diagnose advanced metastatic tumors without known driver mutations. In this strategy, Immunohistochemistry should be used as a screening test followed by confirmatory next-generation sequencing in immunohistochemistry-positive cases.
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Affiliation(s)
| | | | - Fernando Augusto Soares
- Rede D'Or São Luiz, São Paulo, Brazil
- D'Or Institute for Research and Teaching (IDOR), São Paulo, Brazil
| | | | | | - Isabela Werneck da Cunha
- Rede D'Or São Luiz, São Paulo, Brazil
- D'Or Institute for Research and Teaching (IDOR), São Paulo, Brazil
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