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Finkelstein S, Timmaraju VA, Samankan S, O'Malley Q, Kapustin D, Spaulding S, Xing M, Matloob A, Beute J, Seo G, Saturno M, Greenberg L, Wein L, Gonzalez-Velazquez C, Doyle S, Levine J, Urken M, Brandwein-Weber M. Functional loss of tumor suppressor genes detected by loss of heterozygosity, but not driver mutations, predicts aggressive lymph node status in papillary thyroid carcinoma. Pathol Res Pract 2023; 251:154842. [PMID: 37890270 DOI: 10.1016/j.prp.2023.154842] [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: 08/24/2023] [Accepted: 09/30/2023] [Indexed: 10/29/2023]
Abstract
BACKGROUND Recognizing aggressive tumor biology is essential to optimizing patient management for papillary thyroid carcinomas (PTC). Aggressive lymph node (ALN) status is one feature that influences decision-making. We evaluated genomic deletions in regions of tumor suppressor genes, detected by loss of heterozygosity (LOH) analysis, to understand causal alterations linked to thyroid cancer aggressiveness and to serve as a molecular diagnostic biomarker for ALN status. METHODS We analyzed 105 primary PTC enriched for patients with ALN (64% with, 36% without). We also analyzed 39 positive lymph nodes (79% with, 21% without ALN). LOH was determined using a panel of 25 polymorphic microsatellite alleles targeting 10 genomic loci harboring common tumor suppressor genes. Additionally, ThyGeNEXT® and ThyraMIR® assays were performed. RESULTS LOH was detected in 43/67 primary PTC from patients with ALN status, compared with only 5/38 primary PTC without ALN (minimal metastatic burden) (P=0.0000003). This is further supported by post hoc analyses of paired primary and metastatic samples. Paired samples from patients with ALN are more likely to harbor LOH, compared to the ALN negative group (P=0.0125). Additionally, 12/31 paired samples from patients with ALN demonstrated additional or different LOH loci in metastatic samples compared to the primary tumor samples. No association was seen between ALN and mutational, translocation, or microRNA data. CONCLUSIONS LOH detected in primary PTC significantly predicts ALN status. Analysis of paired primary and metastatic samples from patients with / without ALN status further supports this relationship. The acquisition of LOH at additional loci is common in lymph nodes from patients with ALN status. SIMPLE SUMMARY A subset of patients with papillary thyroid carcinoma (PTC) will develop recurrent disease. One known predictor of recurrence is the American Thyroid Association category "Aggressive Lymph Node" (ALN) disease, considering metastatic burden. Loss of heterozygosity (LOH) - chromosomal loss in regions of tumor suppressor genes - has yet to be investigated as a possible mechanism driving ALN status in PTC. The ability to predict ALN status prior to surgery can guide the extent of surgery and postoperative treatment options. We found that paired samples from patients with ALN are more likely to harbor LOH, compared to patients without ALN disease. 38% of patients with ALN demonstrated additional or different LOH loci in metastatic samples compared to the primary tumor samples. LOH complements current molecular analysis of thyroid cancer when searching for evidence of aggressive biology.
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Affiliation(s)
- Sydney Finkelstein
- Interpace Diagnostics, Interpace Biosciences, Pittsburgh, PA, United States
| | | | - Shabnam Samankan
- Department of Pathology, Icahn School of Medicine, Mount Sinai Health System, New York, United States
| | - Quinn O'Malley
- THANC (Thyroid, Head and Neck Cancer) Foundation, 10 Union Square East, New York, NY 10003, United States
| | - Danielle Kapustin
- THANC (Thyroid, Head and Neck Cancer) Foundation, 10 Union Square East, New York, NY 10003, United States; Department of Otolaryngology - Head and Neck Surgery, Icahn School of Medicine, Mount Sinai Health System, New York, NY, United State
| | - Sarah Spaulding
- THANC (Thyroid, Head and Neck Cancer) Foundation, 10 Union Square East, New York, NY 10003, United States
| | - Monica Xing
- THANC (Thyroid, Head and Neck Cancer) Foundation, 10 Union Square East, New York, NY 10003, United States
| | - Ammar Matloob
- Department of Pathology, Icahn School of Medicine, Mount Sinai Health System, New York, United States
| | - John Beute
- THANC (Thyroid, Head and Neck Cancer) Foundation, 10 Union Square East, New York, NY 10003, United States
| | - Gabriella Seo
- THANC (Thyroid, Head and Neck Cancer) Foundation, 10 Union Square East, New York, NY 10003, United States
| | - Michael Saturno
- THANC (Thyroid, Head and Neck Cancer) Foundation, 10 Union Square East, New York, NY 10003, United States
| | - Lily Greenberg
- THANC (Thyroid, Head and Neck Cancer) Foundation, 10 Union Square East, New York, NY 10003, United States
| | - Lauren Wein
- THANC (Thyroid, Head and Neck Cancer) Foundation, 10 Union Square East, New York, NY 10003, United States
| | - Camilo Gonzalez-Velazquez
- THANC (Thyroid, Head and Neck Cancer) Foundation, 10 Union Square East, New York, NY 10003, United States
| | - Scott Doyle
- Department of Pathology and Anatomical Sciences, University at Buffalo, Jacobs School of Medicine, Buffalo, NY, United States
| | - Jonathan Levine
- Interpace Diagnostics, Interpace Biosciences, Pittsburgh, PA, United States
| | - Mark Urken
- THANC (Thyroid, Head and Neck Cancer) Foundation, 10 Union Square East, New York, NY 10003, United States; Department of Otolaryngology - Head and Neck Surgery, Icahn School of Medicine, Mount Sinai Health System, New York, NY, United State
| | - Margaret Brandwein-Weber
- Department of Pathology, Icahn School of Medicine, Mount Sinai Health System, New York, United States.
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Słowińska-Klencka D, Popowicz B, Kulczycka-Wojdala D, Szymańska B, Duda-Szymańska J, Wojtaszek-Nowicka M, Kaczka K, Klencki M. Effective Use of microRNA, BRAF and Sonographic Risk Assessment in Bethesda III Thyroid Nodules Requires a Different Approach to Nodules with Features of Nuclear Atypia and Other Types of Atypia. Cancers (Basel) 2023; 15:4287. [PMID: 37686562 PMCID: PMC10486535 DOI: 10.3390/cancers15174287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 08/23/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
The aim of the study was to analyze the diagnostic usefulness of the combined assessment of the ultrasound risk category of the nodule (evaluated with EU-TIRADS system), the presence of BRAF V600E mutation and the expression of selected microRNAs (miR-146b, miR-221 and miR-222) in Bethesda category III thyroid nodules, separately for cases with nuclear atypia (AUS-nuclear) and cases with other types of atypia (AUS-other). We evaluated 161 nodules (66 AUS-nuclear and 95 AUS-other) with known results of postoperative histopathological examination. The rate of cancer and the rate of PTC among cancers were nearly three times higher in the AUS-nuclear than the AUS-other group. For AUS-nuclear nodules, the most effective diagnostic panel included, in addition to repeat FNA, the assessment of BRAF V600E mutation and the expression of miR-146b and miR-222 (sensitivity: 93.5%, specificity: 80.0%). For AUS-other nodules, a two-step procedure was most effective: at the first stage, forgoing surgical treatment in subjects with a benign repeat FNA outcome, and, at the second stage, the assessment of miR-222 expression and the EU-TIRADS category (sensitivity: 92.3%, specificity: 76.8%). The optimal use of molecular methods in the diagnostics of category III thyroid nodules requires a separate approach for nodules with nuclear atypia and nodules with other types of atypia.
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Affiliation(s)
- Dorota Słowińska-Klencka
- Department of Morphometry of Endocrine Glands, Medical University of Lodz, Pomorska 251 St., 92-213 Lodz, Poland; (D.S.-K.); (B.P.)
| | - Bożena Popowicz
- Department of Morphometry of Endocrine Glands, Medical University of Lodz, Pomorska 251 St., 92-213 Lodz, Poland; (D.S.-K.); (B.P.)
| | - Dominika Kulczycka-Wojdala
- Research Laboratory CoreLab, Medical University of Lodz, Mazowiecka 6/8 St., 92-215 Lodz, Poland; (D.K.-W.); (B.S.)
| | - Bożena Szymańska
- Research Laboratory CoreLab, Medical University of Lodz, Mazowiecka 6/8 St., 92-215 Lodz, Poland; (D.K.-W.); (B.S.)
| | - Joanna Duda-Szymańska
- Department of Pathomorphology, Medical University of Lodz, Pomorska 251 St., 92-213 Lodz, Poland;
| | - Martyna Wojtaszek-Nowicka
- Department of Clinical Endocrinology, Medical University of Lodz, Pomorska 251 St., 92-213 Lodz, Poland;
| | - Krzysztof Kaczka
- Department of General and Oncological Surgery, Surgical Clinical Sciences, Medical University of Lodz, Pomorska 251 St., 92-213 Lodz, Poland;
| | - Mariusz Klencki
- Department of Morphometry of Endocrine Glands, Medical University of Lodz, Pomorska 251 St., 92-213 Lodz, Poland; (D.S.-K.); (B.P.)
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Rossi ED, Baloch Z. The Impact of the 2022 WHO Classification of Thyroid Neoplasms on Everyday Practice of Cytopathology. Endocr Pathol 2023; 34:23-33. [PMID: 36797454 DOI: 10.1007/s12022-023-09756-2] [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] [Accepted: 02/10/2023] [Indexed: 02/18/2023]
Abstract
This review outlines how the alterations in the 5th edition of the WHO Classification of Endocrine and Neuroendocrine Tumors of the thyroid gland are likely to impact thyroid cytopathology. It is important to note that WHO subclassifies thyroid tumors into several new categories based on increased comprehension of the cell of origin, pathologic features (including cytopathology), molecular classification, and biological behavior. The 3rd edition of the Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) will debut in the near future and will include changes in diagnostic category designations. The changes in the 5th edition of the WHO will in some instances subtly, and in other instances significantly, impact the cytological diagnoses. Moreover, these changes will also affect other thyroid FNA classification schemes used internationally for classifying thyroid FNA specimens.
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Affiliation(s)
- Esther Diana Rossi
- Division of Anatomic Pathology and Histology- Fondazione, Policlinico Universitario A.Gemelli-IRCCS, Largo Agostino Gemelli, 8 - 00168 , Rome, Italy
| | - Zubair Baloch
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, 19104, USA.
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McMurtry V, Canberk S, Deftereos G. Molecular testing in fine-needle aspiration of thyroid nodules. Diagn Cytopathol 2023; 51:36-50. [PMID: 36480743 DOI: 10.1002/dc.25035] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/20/2022] [Accepted: 07/22/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND Thyroid nodules are commonly faced by clinicians as palpable nodules or incidentally identified on imaging. Nodules that are found to be suspicious by imaging can be biopsied by fine needle aspiration, which can yield material for molecular testing to refine the diagnosis. METHODS The current literature concerning molecular testing in thyroid nodules including available commercial assays was reviewed and summarized. RESULTS/CONCLUSIONS Commonly encountered alterations include mutations in RAS, BRAF, TERT promoter, PTEN, and DICER1 as well as fusions of RET, ALK, PAX8-PPARγ, and NTRK. This article provides a summary of these molecular alterations, commercially available molecular assays, and general considerations for thyroid epithelial malignancies and benign thyroid nodules.
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Affiliation(s)
- Valarie McMurtry
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA.,ARUP Institute for Experimental Pathology, Salt Lake City, Utah, USA
| | - Sule Canberk
- Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Porto, Portugal.,Abel Salazar Biomedical Sciences Institute (ICBAS), University of Porto, Porto, Portugal
| | - Georgios Deftereos
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA.,ARUP Institute for Experimental Pathology, Salt Lake City, Utah, USA
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Swan KZ, Madsen SH, Bonnema SJ, Nielsen VE, Jespersen ML. Preoperative BRAF V600E mutation detection in thyroid carcinoma by immunocytochemistry. APMIS 2022; 130:627-636. [PMID: 35951496 PMCID: PMC9804421 DOI: 10.1111/apm.13267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 08/09/2022] [Indexed: 01/05/2023]
Abstract
The BRAFV600E (BRAF) mutation is present in 40-50% of papillary thyroid carcinomas (PTC) and has been associated with more aggressive clinicopathological characteristics of PTC. The aim of this study was to evaluate different methods for preoperative identification of the BRAF mutation in PTC using cytological and histological specimens. Prospectively collected preoperative cytological clots from patients with suspected PTC were tested with BRAF immunocytochemistry (ICC) and the Cobas Test (PCR). In addition, histological specimens were tested with BRAF immunohistochemistry (IHC) and the Cobas Test. All nodules were histologically examined. Fifty-three patients were included in the study. Complete mutation testing was available in 32 patients. The main reason for exclusion was insufficient cell content in the cytological specimen. Twenty-seven nodules were histologically diagnosed as PTC, and 41% (n = 11) of PTCs were BRAF ICC positive. All non-PTC nodules were negative by BRAF ICC. In 26 nodules, all four BRAF tests were concordant, while discordant test results were found in six nodules. ICC was in accordance with the consensus BRAF status in five of these nodules, while BRAF status was undetermined in one nodule. BRAF ICC showed high concordance with the Cobas Test and a low rate of false negative stain. These results indicate that BRAF ICC may be a feasible method for preoperative detection of the BRAFV600E mutation in patients with PTC.
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Affiliation(s)
- Kristine Zøylner Swan
- Department of Otorhinolaryngology Head & Neck SurgeryAarhus University HospitalAarhusDenmark
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Carr DM, Mastorides S, Stobaugh C, Carlton G, DeLand L, Borkowski A. Molecular Testing of Atypical Thyroid Nodules with Corresponding Surgical Correlation: Five-Year Retrospective Review in Veterans Population. Cureus 2022; 14:e22536. [PMID: 35345739 PMCID: PMC8956280 DOI: 10.7759/cureus.22536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2022] [Indexed: 11/11/2022] Open
Abstract
Objective We report the results of a retrospective five-year study within a veteran population aimed at correlating abnormal thyroid fine-needle aspiration (FNA) diagnosis with associated molecular testing to the histology of the surgical resection. Methods A retrospective analysis of abnormal thyroid FNAs with associated molecular testing and surgical outcome was conducted from January 1, 2015 to December 31, 2020. Aspirates were classified using the Bethesda system for reporting thyroid cytopathology, including atypia of undetermined significance/follicular lesion of undetermined significance (AUS/FLUS), follicular neoplasm/suspicious for follicular neoplasm (FN/SFN), suspicious for malignancy (SM), and malignant. Pertinent data, including patient demographics, imaging, and ancillary testing were reviewed. A thyroid cancer mutation panel assessing the most common mutations and rearrangements associated with neoplasia was utilized. The results of molecular testing were directly compared and correlated with final cytological and histological diagnosis. Results A total of 1850 thyroid aspirates were performed, 200 of which were given an abnormal cytologic diagnosis. Thirty-six samples were submitted for molecular testing and subsequent surgical follow-up. Four were called malignant on cytology. 32 were placed in an indeterminate category (89%). Within indeterminate cases: 53% exhibited positive molecular mutations (n=17), 34% no mutation detected (n=11), and 13% insufficient quantity for testing (n=4). Upon surgical resection in the mutation-positive group: 18% had no malignancy (n=3), and the remaining 82% were positive for malignancy (n=14). Mutations in the histologically malignant group included: 57% BRAF (n=8), 21% NRAS (n=3), 7% HRAS (n=1), 7% KRAS (n=1), and 7% PAX8/PPAR gamma (n=1). In indeterminate cases with no mutation detected, 10 cases were found to be benign, and one case of malignancy was diagnosed. The probability of indeterminate diagnosis in combination with no mutation yielded a 91% chance of benign entity and 9% chance of malignancy. We demonstrated 93% sensitivity and 91% negative predictive value (NPV) for the risk of malignancy in indeterminate cytology specimens with ancillary molecular testing. There was 77% specificity and 82% positive predictive value (PPV) for our data set. Conclusions In indeterminate samples, the detection of a mutation was highly predictive of malignancy and a strong indicating factor for surgery with a high sensitivity and NPV. Molecular testing refined or established the diagnosis in 89% of the cases. Our results indicate that molecular testing of thyroid nodules enhances the accuracy of FNA cytology and the subsequent surgical outcome.
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Xia R, Sun W, Yee J, Sheth S, Slywotzky C, Hodak S, Brandler TC. Do ACR TI-RADS scores demonstrate unique thyroid molecular profiles? Ultrasonography 2021; 41:480-492. [PMID: 35189676 PMCID: PMC9262667 DOI: 10.14366/usg.21130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 12/20/2021] [Indexed: 11/09/2022] Open
Abstract
Purpose The present study aimed to examine the molecular profiles of cytologically indeterminate thyroid nodules stratified by American College of Radiology Thyroid Imaging Reporting and Data System (TI-RADS) categories and to determine whether certain ultrasonographic features display particular molecular alterations. Methods A retrospective review was conducted of cases from January 1, 2016 to April 1, 2018. Cases with in-house ultrasonography, fine-needle aspiration Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) diagnoses, molecular testing, and surgery were included. All cases were diagnosed as TBSRTC indeterminate categories. The ultrasound studies were retrospectively reviewed and assigned TI-RADS scores (TR1-TR5) by board-certified radiologists. The final diagnoses were determined based on the surgical resection pathology. Binary logistic regression analysis was used to study whether demographic characteristics, TI-RADS levels, and TBSRTC diagnoses were associated with ThyroSeq molecular results. Results Eighty-one cases met the inclusion criteria. RAS mutations were the most common alteration across all TI-RADS categories (TR2 2/2; TR3 10/19, TR4 13/44, and TR5 8/16), and did not stratify with any particular TI-RADS category. Only TR4 and TR5 categories displayed more aggressive mutations such as BRAFV600E; and TERT. ThyroSeq results were positively correlated with thyroid malignancy when non-invasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) was categorized in the malignant category (odds ratio [OR], 6.859; P<0.01), but not when NIFTP was removed from the malignancy category. Echogenicity scores were found to be negatively correlated with ThyroSeq results in thyroid nodules (OR, 0.162; P<0.01). Conclusion Higher-risk molecular alterations tended to stratify with the higher TI-RADS categories.
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Affiliation(s)
- Rong Xia
- Department of Pathology, NYU Langone Health, New York, USA
| | - Wei Sun
- Department of Pathology, NYU Langone Health, New York, USA
| | - Joseph Yee
- Department of Radiology, NYU Langone Health, New York, USA
| | - Sheila Sheth
- Department of Radiology, NYU Langone Health, New York, USA
| | | | - Steven Hodak
- Department of Medicine, Division of Endocrinology, NYU Langone Health, New York, USA
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Tessler I, Shochat I, Cohen O, Meir A, Avior G. Positive Correlation of Thyroid Nodule Cytology with Molecular Profiling-a Single-Center Experience. Endocr Pathol 2021; 32:480-488. [PMID: 34086262 DOI: 10.1007/s12022-021-09680-3] [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] [Accepted: 05/11/2021] [Indexed: 10/21/2022]
Abstract
Despite several reports on the association between molecular profiling, aggressive histology, and clinical outcomes, the association between mutation expression and pre-operative cytology is yet to be demonstrated. Therefore, we performed a retrospective, single-center study, including all patients who underwent molecular profiling of thyroid nodules in Bethesda System for Reporting Thyroid Cytopathology (BSRTC) categories III to VI, between 2018 and 2019. Medical records were reviewed to collect demographics, cytology results according to BSRTC, final pathology (presence of malignancy and its type, as well as presence of aggressive features, including extrathyroidal extension, positive neck lymph nodes, and multifocality), and the identified genetic variants stratified by risk levels, according to the 2015 ATA guidelines. We supplemented this analysis with a systematic review to identify the variant distributions across the literature. We included data on 55 nodules from 48 patients for the final analysis. A significant positive correlation was found between BSRTC categories and the mutation risk level, shown by an increase in the intermediate to high-risk mutation rate in the higher BSRTC categories (Rs = 0.660, p ≤ 0.001). A significant positive correlation was also found between mutation risk levels and the presence of malignancy and aggressive tumor features (Rs = 0.637, p < 0.001 and Rs = 0.459, p = 0.006, respectively). This novel positive and significant correlation between BSRTC categories and the mutation risk level provides additional insight to aid clinicians in the interpretation of BSRTC results and may contribute to the discussion of appropriate management of thyroid nodule with patients.
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Affiliation(s)
- Idit Tessler
- Faculty of Medicine, Hebrew University, Jerusalem, Israel
| | - Isaac Shochat
- Department of Otolaryngology Head and Neck Surgery, Technion Faculty of Medicine, Hillel Yaffe Medical Center, 38100, Haifa, Israel
- Faculty of Medicine, Technion, Haifa, Israel
| | - Oded Cohen
- Faculty of Medicine, Hebrew University, Jerusalem, Israel
| | - Alona Meir
- Faculty of Medicine, Technion, Haifa, Israel
- Department of Pathology, Hillel Yaffe Medical Center, Hadera, Israel
| | - Galit Avior
- Department of Otolaryngology Head and Neck Surgery, Technion Faculty of Medicine, Hillel Yaffe Medical Center, 38100, Haifa, Israel.
- Faculty of Medicine, Technion, Haifa, Israel.
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Molecular Tests for Risk-Stratifying Cytologically Indeterminate Thyroid Nodules: An Overview of Commercially Available Testing Platforms in the United States. JOURNAL OF MOLECULAR PATHOLOGY 2021. [DOI: 10.3390/jmp2020014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The past decade has witnessed significant advances in the application of molecular diagnostics for the pre-operative risk-stratification of cytologically indeterminate thyroid nodules. The tests that are currently marketed in the United States for this purpose combine aspects of tumor genotyping with gene and/or microRNA expression profiling. This review compares the general methodology and clinical validation studies for the three tests currently offered in the United States: ThyroSeq v3, Afirma GSC and Xpression Atlas, and ThyGeNEXT/ThyraMIR.
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Song Y, Xu G, Ma T, Zhu Y, Yu H, Yu W, Wei W, Wang T, Zhang B. Utility of a multigene testing for preoperative evaluation of indeterminate thyroid nodules: A prospective blinded single center study in China. Cancer Med 2020; 9:8397-8405. [PMID: 32976686 PMCID: PMC7666727 DOI: 10.1002/cam4.3450] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 08/13/2020] [Accepted: 08/20/2020] [Indexed: 01/12/2023] Open
Abstract
Background Thyroid nodules are highly prevalent, with fine‐needle aspiration (FNA) commonly used as the standard preoperative tool for their diagnosis. However, the method classifies some of the samples as indeterminate, leading to unnecessary surgery. In this study, we evaluated the value of next‐generation sequencing (NGS) for cancer diagnosis in indeterminate thyroid nodules. Materials and methods We performed a prospective, blinded cohort study on 189 patients, with 196 Bethesda III/IV nodules. Specifically, we analyzed DNA mutations and RNA fusions across the FNA samples using NGS, then reviewed follow‐up reports from 84 nodules following definitive surgery, to determine the assay performance. Results Enough DNA and RNA were obtained in 188 nodules, revealing mutations or fusions in 34.6% of them. The most frequently mutated genes were RAS, followed by BRAF V600E. Based on surgical pathology, 39% (33/84) and 4.8% (4/84) of the nodules were malignant and intermediate, respectively. According to the risk stratification criteria, 28 cases were categorized High‐Risk group, all of the resected nodules (n = 20) were malignant. Twenty‐four thyroid nodules were in the Low‐Risk group, 28.6% (4/14) surgically removed nodules were malignant. In the Benign‐Like category, 18.0% (9/50) were malignant. Five out of 13 nodules with benign mutations were resected, including SPOP, EZH1, and ZNF148, all of them were benign. If genetic alterations annotated with High‐Risk or Low‐Risk was considered as positive, and negative if Benign‐Like. Multigene testing revealed sensitivity, specificity, positive predictive values (PPV), and negative predictive value (NPV) of 73%, 80%, 71%, and 82%, respectively. In addition, if four intermediate nodules were counted as malignant, the PPV and NPV were 71% and 74%. Conclusion Our results allow for further stratification of Bethesda III/IV thyroid nodules based on the risk of their malignancy. SPOP, EZH1, and ZNF148 mutations may be used as benign markers.
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Affiliation(s)
- Yuntao Song
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Head and Neck Surgery, Peking University Cancer Hospital and Institute, Beijing, China
| | - Guohui Xu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Head and Neck Surgery, Peking University Cancer Hospital and Institute, Beijing, China
| | - Tonghui Ma
- Genetron Health (Beijing) Co. Ltd, Beijing, China
| | - Yanli Zhu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Pathology, Peking University Cancer Hospital and Institute, Beijing, China
| | - Hao Yu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Head and Neck Surgery, Peking University Cancer Hospital and Institute, Beijing, China
| | - Wenbin Yu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Head and Neck Surgery, Peking University Cancer Hospital and Institute, Beijing, China
| | - Wei Wei
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Head and Neck Surgery, Peking University Cancer Hospital and Institute, Beijing, China
| | - Tianxiao Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Head and Neck Surgery, Peking University Cancer Hospital and Institute, Beijing, China
| | - Bin Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Head and Neck Surgery, Peking University Cancer Hospital and Institute, Beijing, China
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