1
|
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: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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.
Collapse
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
| |
Collapse
|
2
|
Cervi C, Sápi Z, Bedics G, Zajta E, Hegyi L, Pápay J, Dezső K, Varga E, Mudra K, Bödör C, Csóka M. Case report: Complete and durable response to larotrectinib (TRK inhibitor) in an infant diagnosed with angiosarcoma harbouring a KHDRBS1-NTRK3 fusion gene. Front Oncol 2023; 13:999810. [PMID: 36910630 PMCID: PMC9997097 DOI: 10.3389/fonc.2023.999810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 02/07/2023] [Indexed: 02/25/2023] Open
Abstract
Significant improvements in the survival rates of paediatric cancer have been achieved over the past decade owing to recent advances in therapeutic and diagnostic strategies. However, disease progression and relapse remain a major challenge for the clinical management of paediatric angiosarcoma. Comprehensive genomic profiling of these rare tumours using high-throughput sequencing technologies may improve patient stratification and identify actionable biomarkers for therapeutic intervention. Here, we describe the clinical, histopathological, immunohistochemical and molecular profile of a novel and precision medicine-informed case where a KHDRBS1-NTRK3 fusion determined by next-generation sequencing-based comprehensive genomic profiling led to complete and sustained remission (clinical and radiological response) in an otherwise incurable disease. Our patient represents the first paediatric angiosarcoma harbouring a targetable NTRK3 fusion in the literature and demonstrates the first example of targeting this alteration in angiosarcoma using larotrectinib, an NTRK inhibitor. Clinical and radiological remission was achieved in under two months of therapy, and the patient is currently in complete remission, 4 month after stopping larotrectinib therapy, which was given over 17 months with only mild side effects reported. Therefore, this remarkable case exemplifies the true essence of precision-based care by incorporating conventional pathology with the why, when, and how to test for rare oncogenic drivers and agnostic biomarkers in paediatric angiosarcoma.
Collapse
Affiliation(s)
- Catherine Cervi
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary.,2nd Department of Paediatrics, Semmelweis University, Budapest, Hungary
| | - Zoltán Sápi
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Gábor Bedics
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary.,HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Erik Zajta
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary.,HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Lajos Hegyi
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary.,HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Judit Pápay
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Katalin Dezső
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Edit Varga
- 2nd Department of Paediatrics, Semmelweis University, Budapest, Hungary
| | - Katalin Mudra
- 2nd Department of Paediatrics, Semmelweis University, Budapest, Hungary
| | - Csaba Bödör
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary.,HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Monika Csóka
- 2nd Department of Paediatrics, Semmelweis University, Budapest, Hungary
| |
Collapse
|