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Tondi Resta I, Rind A, Montone KT, Livolsi VA, Baloch ZW. A comparison of the histopathologic features of thyroid carcinomas with NTRK fusions to those with other malignant fusions. Hum Pathol 2024; 149:29-38. [PMID: 38857659 DOI: 10.1016/j.humpath.2024.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 05/21/2024] [Accepted: 06/08/2024] [Indexed: 06/12/2024]
Abstract
BACKGROUND Chromosomal rearrangements involving one of the NTRK genes result in oncogenic driver mutations in thyroid carcinoma (TC) and serve as a target for therapy. We compared the clinicopathologic features of thyroid carcinomas with NTRK fusions vs. thyroid neoplasms with other malignancy associated gene fusions within our institution. MATERIALS AND METHODS Our pathology archives were searched from 2013 to 2023 for thyroid neoplasms with gene fusions, excluding THADA fusions and medullary thyroid carcinomas. RESULTS 55 thyroid lesions were identified: 22 with NTRK fusions (NTRK cohort) and 33 with other fusions (non-NTRK cohort). On fine needle aspiration (FNA), 54% of the NTRK cohort were classified as Category V as per Bethesda System for Reporting Thyroid Cytology (TBSRTC) and 51.5% of non-NTRK cohort as TBSRTC Category III. In the NTRK cohort, the most common reported fusion was ETV6::NTRK3 and the most common reported fusion in the non-NTRK cohort was PAX8::PPAR-gamma. On histologic examination both cohorts were most commonly diagnosed as PTC follicular variant. Invasive features were more common in the NTRK cohort in comparison to the non-NTRK cohort. Locoregional recurrence occurred in 2/22 NTRK cases and 2/33 non-NTRK cases, with average time from surgery to recurrence being 5.5 months and 21 months, respectively. The majority of patients in both groups are alive with no evidence of disease. CONCLUSIONS Thyroid neoplasms with a malignancy associated gene fusion are likely to be diagnosed as subtype/variant of PTC. Patients whose thyroid lesions harbor NTRK fusions present with a PTC-FV that on presentation has more aggressive clinicopathologic findings and are likely to have earlier disease recurrence.
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Affiliation(s)
- I Tondi Resta
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA.
| | - A Rind
- Liaquat University of Medical and Health Sciences, Jamshoro, Sindh, Pakistan
| | - K T Montone
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - V A Livolsi
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Z W Baloch
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
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2
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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: 3] [Impact Index Per Article: 3.0] [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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3
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Tian T, Huang S, Dai H, Qi M, Liu B, Huang R. Radioactive Iodine-Refractory Pulmonary Metastases of Papillary Thyroid Cancer in Children, Adolescents, and Young Adults. J Clin Endocrinol Metab 2023; 108:306-314. [PMID: 36226635 DOI: 10.1210/clinem/dgac600] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/05/2022] [Indexed: 01/27/2023]
Abstract
CONTEXT Few studies have explored radioactive iodine-refractory (RAIR) disease in children, adolescents, and young adults with papillary thyroid cancer (CAYA-PTC). OBJECTIVE This study systematically investigated the clinicopathologic characteristics and prognosis of CAYA-PTC with RAIR disease. METHODS Sixty-five patients with PTC aged ≤20 years were enrolled in this study, and all patients were confirmed to have pulmonary metastases. Clinicopathologic profiles were compared between the radioactive iodine-avid (RAIA) and RAIR groups. Univariate and multivariate regression analyses were performed to identify risk factors for RAIR status and progressive disease (PD). Gene alterations were detected in 17 patients. RESULTS Overall, 20 patients were included in the RAIR group, accounting for 30.8% (20/65) of all patients. No significant difference in pathologic characteristics was observed between patients aged <15 years and patients aged 15-20 years, but younger patients were more likely to develop RAIR disease (hazard ratio [HR] 3.500, 95% CI 1.134-10.803, P = .023). RET fusions were the most common genetic alterations in CAYA-PTC, but an association with RAIR disease was not detected (P = .210). RAIR disease (HR 10.008, 95% CI 2.427-41.268, P = .001) was identified as an independent predictor of PD. The Kaplan-Meier curve revealed a lower progression-free survival (PFS) and disease-specific survival (DSS) rate in the RAIR group than in the RAIA group (P < .001 and P = .039). Likewise, RAIR disease was a risk factor for unfavorable PFS in patients aged <15 years (P < .001). CONCLUSION RAIR disease occurs in one-third of CAYA-PTC with pulmonary metastases. Younger patients (aged < 15 years) are more susceptible to RAIR status, which leads to unfavorable PFS and DSS.
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Affiliation(s)
- Tian Tian
- Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Shuhui Huang
- Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Hongyuan Dai
- Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Mengfang Qi
- Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Bin Liu
- Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Rui Huang
- Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, China
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4
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Vuong HG, Le HT, Le TT, Le T, Hassell L, Kakudo K. Clinicopathological significance of major fusion oncogenes in papillary thyroid carcinoma: An individual patient data meta-analysis. Pathol Res Pract 2022; 240:154180. [DOI: 10.1016/j.prp.2022.154180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/11/2022] [Accepted: 10/14/2022] [Indexed: 11/05/2022]
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5
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Franco AT, Ricarte-Filho JC, Isaza A, Jones Z, Jain N, Mostoufi-Moab S, Surrey L, Laetsch TW, Li MM, DeHart JC, Reichenberger E, Taylor D, Kazahaya K, Adzick NS, Bauer AJ. Fusion Oncogenes Are Associated With Increased Metastatic Capacity and Persistent Disease in Pediatric Thyroid Cancers. J Clin Oncol 2022; 40:1081-1090. [PMID: 35015563 PMCID: PMC8966969 DOI: 10.1200/jco.21.01861] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 10/07/2021] [Accepted: 12/09/2021] [Indexed: 12/15/2022] Open
Abstract
PURPOSE In 2014, data from a comprehensive multiplatform analysis of 496 adult papillary thyroid cancer samples reported by The Cancer Genome Atlas project suggested that reclassification of thyroid cancer into molecular subtypes, RAS-like and BRAF-like, better reflects clinical behavior than sole reliance on pathologic classification. The aim of this study was to categorize the common oncogenic variants in pediatric differentiated thyroid cancer (DTC) and investigate whether mutation subtype classification correlated with the risk of metastasis and response to initial therapy in pediatric DTC. METHODS Somatic cancer gene panel analysis was completed on DTC from 131 pediatric patients. DTC were categorized into RAS-mutant (H-K-NRAS), BRAF-mutant (BRAF p.V600E), and RET/NTRK fusion (RET, NTRK1, and NTRK3 fusions) to determine differences between subtype classification in regard to pathologic data (American Joint Committee on Cancer TNM) as well as response to therapy 1 year after initial treatment had been completed. RESULTS Mutation-based subtype categories were significant in most variables, including age at diagnosis, metastatic behavior, and the likelihood of remission at 1 year. Patients with RET/NTRK fusions were significantly more likely to have advanced lymph node and distant metastasis and less likely to achieve remission at 1 year than patients within RAS- or BRAF-mut subgroups. CONCLUSION Our data support that genetic subtyping of pediatric DTC more accurately reflects clinical behavior than sole reliance on pathologic classification with patients with RET/NTRK fusions having worse outcomes than those with BRAF-mutant disease. Future trials should consider inclusion of molecular subtype into risk stratification.
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Affiliation(s)
- Aime T. Franco
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Julio C. Ricarte-Filho
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Amber Isaza
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Zachary Jones
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, Philadelphia, PA
- Deceased
| | - Neil Jain
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Sogol Mostoufi-Moab
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, Philadelphia, PA
- Division of Oncology, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Lea Surrey
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | | | - Marilyn M. Li
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | | | - Erin Reichenberger
- Department of Biomedical and Health Informatics, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Deanne Taylor
- Department of Biomedical and Health Informatics, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Ken Kazahaya
- Division of Pediatric Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Surgery, Children's Hospital of Philadelphia, Philadelphia, PA
| | - N. Scott Adzick
- Department of Surgery, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Andrew J. Bauer
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, Philadelphia, PA
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6
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Mollen KP, Shaffer AD, Yip L, Monaco SE, Huyett P, Viswanathan P, Witchel SF, Duvvuri U, Simons JP. Unique Molecular Signatures Are Associated with Aggressive Histology in Pediatric Differentiated Thyroid Cancer. Thyroid 2022; 32:236-244. [PMID: 34915753 DOI: 10.1089/thy.2021.0317] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background: Molecular testing (MT) enhances the diagnostic accuracy of thyroid fine-needle aspiration biopsy, reducing the need for diagnostic lobectomy in adult patients with indeterminate nodules (Bethesda class III/IV). However, little is known about genetic alterations in pediatric thyroid carcinoma (TC). Our aim was to analyze MT results of pediatric differentiated TC (DTC) cases to determine associations with histological and clinical features. Methods: A retrospective review identified all patients (aged <19 years) diagnosed with DTC from 2001 to 2017 at the University of Pittsburgh Medical Center. Histology was rereviewed to confirm diagnosis and identify tissue for MT using next-generation sequencing (ThyroSeq, version 3, TSv3). Correlation with histological and clinical features was analyzed using regression analysis. Results: Of 71 patients with MT results, 62 (87%) patients had papillary TC. All patients were alive at a median follow-up of 6 years (range 18 days to 18 years). Genetic alterations were identified in 65 (92%) patients. These alterations were grouped as BRAF-like point mutations or fusions (39, 55%), RAS-like mutations or fusions (21, 30%), or copy number alterations (5, 7%). On multiple regression analysis accounting for patient sex and tumor size in patients with papillary TC, increased tumor stage (β: 0.234, p < 0.001), multifocal disease (odds ratio [OR]: 3.60, p = 0.042), and lymph node metastases (OR: 6.13, p = 0.044) were associated with BRAF-like gene fusions. When considering individual mutations, ETV6/NTRK3 fusions were associated with increased tumor stage (β: 2.07, p = 0.023) and BRAF-like point mutations were associated with increased likelihood of surgery for recurrence over time (hazard ratio: 19.5, p = 0.004). Conclusions: Among our cohort of pediatric TC patients who underwent comprehensive MT, >90% had an identifiable genetic alteration. Aggressive features were primarily associated with BRAF-like gene fusions. Preoperative MT results may be useful in guiding the extent of the initial operation in pediatric patients (aged <19 years) with TC.
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Affiliation(s)
- Kevin P Mollen
- Department of Surgery and University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Amber D Shaffer
- Department of Otolaryngology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Linwah Yip
- Department of Surgery and University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Sara E Monaco
- Department of Laboratory Medicine, Geisinger Medical Center, Danville, Pennsylvania, USA
| | - Phillip Huyett
- Department of Otolaryngology, Harvard Medical School, Boston, Massachusetts, USA
| | - Pushpa Viswanathan
- Division of Pediatric Endocrinology, Diabetes, and Metabolism, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Selma F Witchel
- Division of Pediatric Endocrinology, Diabetes, and Metabolism, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Umamaheswar Duvvuri
- Department of Otolaryngology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Jeffrey P Simons
- Department of Otolaryngology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
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Rogounovitch TI, Mankovskaya SV, Fridman MV, Leonova TA, Kondratovitch VA, Konoplya NE, Yamashita S, Mitsutake N, Saenko VA. Major Oncogenic Drivers and Their Clinicopathological Correlations in Sporadic Childhood Papillary Thyroid Carcinoma in Belarus. Cancers (Basel) 2021; 13:3374. [PMID: 34282777 PMCID: PMC8268670 DOI: 10.3390/cancers13133374] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/02/2021] [Accepted: 07/02/2021] [Indexed: 11/16/2022] Open
Abstract
Childhood papillary thyroid carcinoma (PTC) diagnosed after the Chernobyl accident in Belarus displayed a high frequency of gene rearrangements and low frequency of point mutations. Since 2001, only sporadic thyroid cancer occurs in children aged up to 14 years but its molecular characteristics have not been reported. Here, we determine the major oncogenic events in PTC from non-exposed Belarusian children and assess their clinicopathological correlations. Among the 34 tumors, 23 (67.6%) harbored one of the mutually exclusive oncogenes: 5 (14.7%) BRAFV600E, 4 (11.8%) RET/PTC1, 6 (17.6%) RET/PTC3, 2 (5.9%) rare fusion genes, and 6 (17.6%) ETV6ex4/NTRK3. No mutations in codons 12, 13, and 61 of K-, N- and H-RAS, BRAFK601E, or ETV6ex5/NTRK3 or AKAP9/BRAF were detected. Fusion genes were significantly more frequent than BRAFV600E (p = 0.002). Clinicopathologically, RET/PTC3 was associated with solid growth pattern and higher tumor aggressiveness, BRAFV600E and RET/PTC1 with classic papillary morphology and mild clinical phenotype, and ETV6ex4/NTRK3 with follicular-patterned PTC and reduced aggressiveness. The spectrum of driver mutations in sporadic childhood PTC in Belarus largely parallels that in Chernobyl PTC, yet the frequencies of some oncogenes may likely differ from those in the early-onset Chernobyl PTC; clinicopathological features correlate with the oncogene type.
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Affiliation(s)
- Tatiana I. Rogounovitch
- Department of Radiation Medical Sciences, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki 852-8523, Japan; (T.I.R.); (N.M.)
| | - Svetlana V. Mankovskaya
- Institute of Physiology of the National Academy of Sciences of Belarus, 220072 Minsk, Belarus;
| | - Mikhail V. Fridman
- Republican Centre for Thyroid Tumors, Department of Pathology, Minsk City Clinical Oncologic Dispensary, 220013 Minsk, Belarus;
| | - Tatiana A. Leonova
- Counseling-Diagnostic Department of Thyroid Diseases, Minsk City Clinical Oncologic Dispensary, 220013 Minsk, Belarus;
| | | | - Natalya E. Konoplya
- N.N.Alexandrov National Cancer Centre of Belarus, Department of Chemotherapy, 223040 Minsk, Belarus;
| | - Shunichi Yamashita
- Radiation Medical Science Center, Fukushima Medical University, Fukushima 960-1295, Japan;
- Center for Advanced Radiation Emergency Medicine, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Norisato Mitsutake
- Department of Radiation Medical Sciences, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki 852-8523, Japan; (T.I.R.); (N.M.)
- Department of Radiation Molecular Epidemiology, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki 852-8523, Japan
| | - Vladimir A. Saenko
- Department of Radiation Molecular Epidemiology, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki 852-8523, Japan
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Marotta V, Chiofalo MG, Di Gennaro F, Daponte A, Sandomenico F, Vallone P, Costigliola L, Botti G, Ionna F, Pezzullo L. Kinase-inhibitors for iodine-refractory differentiated thyroid cancer: still far from a structured therapeutic algorithm. Crit Rev Oncol Hematol 2021; 162:103353. [PMID: 34000414 DOI: 10.1016/j.critrevonc.2021.103353] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 01/16/2021] [Accepted: 05/11/2021] [Indexed: 12/17/2022] Open
Abstract
The kinase-inhibitors (KIs) sorafenib and lenvatinib demonstrated efficacy in iodine-refractory DTC upon phase III studies. However, evidence allowing a punctual balance of benefits and risks is poor. Furthermore, the lack of a direct comparison hampers to establish the proper sequence of administration. However, some insights may provided: a) indirect comparison between phase III trials showed milder toxicity for sorafenib, which should be preferred in case of cardiovascular comorbidities; b) prospective evidence of efficacy in KIs pre-treated patients is available only for lenvatinib, which should be used as second-line. Promising activity was found for the majority of other tested KIs, but no placebo-controlled trials are available. Emerging, but still early, frontiers include the restoration of iodine-sensitivity and the selective activity on pathogenic mutations. In conclusion, the use of KIs in iodine-refractory DTC is far from a structured therapeutic algorithm.
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Affiliation(s)
- Vincenzo Marotta
- Struttura Complessa Chirurgia Oncologica Della Tiroide, Istituto Nazionale Tumori - Irccs - Fondazione G.Pascale, Napoli, Italy.
| | - Maria Grazia Chiofalo
- Struttura Complessa Chirurgia Oncologica Della Tiroide, Istituto Nazionale Tumori - Irccs - Fondazione G.Pascale, Napoli, Italy
| | - Francesca Di Gennaro
- Struttura Complessa Medicina Nucleare e Terapia Metabolica, Istituto Nazionale Tumori - Irccs - Fondazione G.Pascale, Napoli, Italy
| | - Antonio Daponte
- Struttura Complessa Oncologia Clinica Sperimentale Testa-Collo e Muscolo-Scheletrica, Istituto Nazionale Tumori - Irccs - Fondazione G.Pascale, Napoli, Italy
| | - Fabio Sandomenico
- Struttura Complessa Radiodiagnostica, Istituto Nazionale Tumori - Irccs - Fondazione G.Pascale, Napoli, Italy
| | - Paolo Vallone
- Struttura Complessa Radiodiagnostica, Istituto Nazionale Tumori - Irccs - Fondazione G.Pascale, Napoli, Italy
| | - Luciana Costigliola
- Unità Operativa Compessa Di Chirugia Generale, d'Urgenza e Metabolica, Pineta Grande Hospital, Castel Volturno, Italy
| | - Gerardo Botti
- Struttura Complessa Anatomia Patologica e Citopatologia, Istituto Nazionale Tumori - Irccs - Fondazione G.Pascale, Napoli, Italy
| | - Franco Ionna
- Struttura Complessa Chirurgia Oncologica Maxillo-Facciale Ed ORL, Istituto Nazionale Tumori - Irccs - Fondazione G.Pascale, Napoli, Italy
| | - Luciano Pezzullo
- Struttura Complessa Chirurgia Oncologica Della Tiroide, Istituto Nazionale Tumori - Irccs - Fondazione G.Pascale, Napoli, Italy.
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9
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Stenman A, Backman S, Johansson K, Paulsson JO, Stålberg P, Zedenius J, Juhlin CC. Pan-genomic characterization of high-risk pediatric papillary thyroid carcinoma. Endocr Relat Cancer 2021; 28:337-351. [PMID: 33827048 PMCID: PMC8111328 DOI: 10.1530/erc-20-0464] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/06/2021] [Indexed: 12/20/2022]
Abstract
Pediatric papillary thyroid carcinomas (pPTCs) are often indolent tumors with excellent long-term outcome, although subsets of cases are clinically troublesome and recur. Although it is generally thought to exhibit similar molecular aberrancies as their counterpart tumors in adults, the pan-genomic landscape of clinically aggressive pPTCs has not been previously described. In this study, five pairs of primary and synchronously metastatic pPTC from patients with high-risk phenotypes were characterized using parallel whole-genome and -transcriptome sequencing. Primary tumors and their metastatic components displayed an exceedingly low number of coding somatic mutations and gross chromosomal alterations overall, with surprisingly few shared mutational events. Two cases exhibited one established gene fusion event each (SQSTM1-NTRK3 and NCOA4-RET) in both primary and metastatic tissues, and one case each was positive for a BRAF V600E mutation and a germline truncating CHEK2 mutation, respectively. One single case was without apparent driver events and was considered as a genetic orphan. Non-coding mutations in cancer-associated regions were generally not present. By expressional analyses, fusion-driven primary and metastatic pPTC clustered separately from the mutation-driven cases and the sole genetic orphan. We conclude that pPTCs are genetically indolent tumors with exceedingly stable genomes. Several mutations found exclusively in the metastatic samples which may represent novel genetic events that drive the metastatic behavior, and the differences in mutational compositions suggest early clonal divergence between primary tumors and metastases. Moreover, an overrepresentation of mutational and expressional dysregulation of immune regulatory pathways was noted among fusion-positive pPTC metastases, suggesting that these tumors might facilitate spread through immune evasive mechanisms.
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Affiliation(s)
- Adam Stenman
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Department of Breast, Endocrine Tumors and Sarcoma, Karolinska University Hospital, Stockholm, Sweden
| | - Samuel Backman
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Klara Johansson
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Johan O Paulsson
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Peter Stålberg
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Jan Zedenius
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Department of Breast, Endocrine Tumors and Sarcoma, Karolinska University Hospital, Stockholm, Sweden
| | - C Christofer Juhlin
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
- Department of Pathology and Cytology, Karolinska University Hospital, Stockholm, Sweden
- Correspondence should be addressed to C C Juhlin:
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