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Koehler VF, Achterfeld J, Sandner N, Koch C, Wiegmann JP, Ivanyi P, Käsmann L, Pusch R, Wolf D, Chirica M, Knösel T, Demes MC, Kumbrink J, Vogl TJ, Meyer G, Spitzweg C, Bojunga J, Kroiss M. NTRK fusion events and targeted treatment of advanced radioiodine refractory thyroid cancer. J Cancer Res Clin Oncol 2023; 149:14035-14043. [PMID: 37548775 PMCID: PMC10590332 DOI: 10.1007/s00432-023-05134-x] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 07/04/2023] [Indexed: 08/08/2023]
Abstract
PURPOSE Pathogenic fusion events involving neurotrophic receptor tyrosine kinase (NTRK) have been described in ~ 2% of differentiated thyroid cancer (DTC). The selective tropomyosin receptor kinase (TRK) inhibitors entrectinib and larotrectinib have been approved in a tumor agnostic manner based on phase 1/2 clinical trials. In a real-world setting at five referral centers, we aimed to describe the prevalence of NTRK gene fusions and the efficacy and safety of TRK inhibitor treatment for non-medullary, advanced thyroid cancer (TC). METHODS A total of 184 TC patients with testing for NTRK gene fusions were included. Progression-free survival (PFS) and overall survival (OS) probabilities were estimated using the Kaplan-Meier method in six patients with NTRK fusion-positive TC who underwent TRK inhibitor therapy. RESULTS 8/184 (4%) patients harbored NTRK gene fusions. Six patients with radioiodine (RAI)-refractory TC harboring NTRK1 (n = 4) and NTRK3 (n = 2) gene fusions were treated with larotrectinib. Five patients (83%) had received ≥ 1 prior systemic therapy and one patient did not receive prior systemic therapy. All patients had morphologically progressive disease before treatment initiation. Objective response rate was 83%, including two complete remissions. Median PFS from start of TRK inhibitor treatment was 23 months (95% confidence interval [CI], 0-57.4) and median OS was not reached (NR) (95% CI, NR). Adverse events were of grade 1-3. CONCLUSION The prevalence of NTRK gene fusions in our cohort of RAI-refractory TC is slightly higher than reported for all TC patients. Larotrectinib is an effective treatment option in the majority of NTRK gene fusion-positive advanced TC patients after prior systemic treatment and has a favorable safety profile.
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Affiliation(s)
| | - Josefine Achterfeld
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
| | - Natalie Sandner
- Department of Medicine I, Goethe University Hospital, Frankfurt am Main, Germany
| | - Christine Koch
- Department of Medicine I, Goethe University Hospital, Frankfurt am Main, Germany
| | - Jonas Paul Wiegmann
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Philipp Ivanyi
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Lukas Käsmann
- Department of Radiotherapy and Radiation Oncology, University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
| | - Renate Pusch
- Department of Oncology and Hematology, Ordensklinikum Linz, Barmherzige Schwestern, Linz, Austria
| | - Dominik Wolf
- Department of Haematology and Oncology, Medical University Innsbruck, Innsbruck, Austria
| | | | - Thomas Knösel
- Department of Pathology, LMU Munich, Munich, Germany
| | - Melanie-Christin Demes
- Senckenbergisches Institut für Pathologie, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Joerg Kumbrink
- German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
- Department of Pathology, LMU Munich, Munich, Germany
| | - Thomas J. Vogl
- Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Gesine Meyer
- Department of Medicine I, Goethe University Hospital, Frankfurt am Main, Germany
| | - Christine Spitzweg
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
- Division of Endocrinology, Diabetes, Metabolism and Nutrition, Adjunct Academic Appointment, Mayo Clinic Rochester, Rochester, MN USA
| | - Joerg Bojunga
- Department of Medicine I, Goethe University Hospital, Frankfurt am Main, Germany
| | - Matthias Kroiss
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
- Department of Internal Medicine I, Division of Endocrinology/Diabetology, University of Würzburg, Würzburg, Germany
- Comprehensive Cancer Center Mainfranken, University of Würzburg, Würzburg, Germany
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