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Margraf RL, Alexander RZ, Fulmer ML, Miller CE, Coupal E, Mao R. Multiple endocrine neoplasia type 2 (MEN2) and RET specific modifications of the ACMG/AMP variant classification guidelines and impact on the MEN2 RET database. Hum Mutat 2022; 43:1780-1794. [PMID: 36251279 DOI: 10.1002/humu.24486] [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: 04/20/2022] [Revised: 09/20/2022] [Accepted: 10/04/2022] [Indexed: 01/24/2023]
Abstract
The Multiple Endocrine Neoplasia type 2 (MEN2) RET proto-oncogene database, originally published in 2008, is a comprehensive repository of all publicly available RET gene variations associated with MEN2 syndromes. The variant-specific genotype/phenotype information, age of earliest reported medullary thyroid carcinoma (MTC) onset, and relevant references with a brief summary of findings are cataloged. The ACMG/AMP 2015 consensus statement on variant classification was modified specifically for MEN2 syndromes and RET variants using ClinGen sequence variant interpretation working group recommendations and ClinGen expert panel manuscripts, as well as manuscripts from the American Thyroid Association Guidelines Task Force on Medullary Thyroid Carcinoma and other MEN2 RET literature. The classifications for the 166 single unique variants in the MEN2 RET database were reanalyzed using the MEN2 RET specifically modified ACMG/AMP classification guidelines (version 1). Applying these guidelines added two new variant classifications to the database (likely benign and likely pathogenic) and resulted in clinically significant classification changes (e.g., from pathogenic to uncertain) in 15.7% (26/166) of the original variants. Of those clinically significant changes, the highest percentage of changes, 46.2% (12/26), were changes from uncertain to benign or likely benign. The modified ACMG/AMP criteria with MEN2 RET specifications will optimize and standardize RET variant classifications.
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Affiliation(s)
- Rebecca L Margraf
- ARUP Institute for Clinical and Experimental Pathology®, Salt Lake City, Utah, USA
| | | | - Makenzie L Fulmer
- ARUP Institute for Clinical and Experimental Pathology®, Salt Lake City, Utah, USA.,Department of Pathology, School of Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Christine E Miller
- ARUP Institute for Clinical and Experimental Pathology®, Salt Lake City, Utah, USA
| | - Elena Coupal
- ARUP Institute for Clinical and Experimental Pathology®, Salt Lake City, Utah, USA
| | - Rong Mao
- ARUP Institute for Clinical and Experimental Pathology®, Salt Lake City, Utah, USA.,Department of Pathology, School of Medicine, University of Utah, Salt Lake City, Utah, USA
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2
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Alzahrani AS, Alswailem M, Alghamdi B, Rafiullah R, Aldawish M, Al-Hindi H. Controversy on the management of patients carrying RET p.V804M mutation. Endocrine 2022; 75:478-486. [PMID: 34637071 DOI: 10.1007/s12020-021-02895-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 09/24/2021] [Indexed: 11/30/2022]
Abstract
CONTEXT RET p.V804M is classified as a moderate risk mutation for familial medullary thyroid cancer (FMTC). There is a significant controversy on the management of patients carrying this mutation. We describe a family incidentally discovered to have this mutation and review the literature on RET p.V804M mutation. RESULTS The proband was born to first-degree relative parents. He was noticed to have hypertrophy of some parts of the body and vascular skin changes. Whole-exome sequencing of DNA extracted from a skin biopsy showed a mutation in the PIK3CA (c.3132T>G, p.ASN1044LYS). This variant was not found in DNA extracted from blood. This confirmed the diagnosis of CLOVES syndrome (Congenital Lipomatous Overgrowth, Vascular malformations, Epidermal nevi and Scoliosis, skeletal or spinal anomalies). Another incidentally found mutation in the skin biopsy and blood sample was RET p.V804M. Although there was no family history of MTC or MEN 2 syndromes, family screening revealed RET p.V804M mutation and FMTC in the proband's father, paternal grandmother, one sister, and one aunt. There was significant interfamilial heterogeneity in the age of presentation and pathology. A review of literature showed that RET p.V804M mutation is a moderate risk mutation associated with late-onset FMTC, usually at middle to old age. CONCLUSION Despite the controversy and the heterogeneous presentation of patients with RET p.V804M mutation, our study and review of the literature suggest that this seemingly "low" risk mutation is associated with late-onset but potentially aggressive MTC. This indicates the need for follow-up and timely intervention based on calcitonin level elevation.
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Affiliation(s)
- Ali S Alzahrani
- Department of Molecular Oncology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.
- Department of Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.
| | - Meshael Alswailem
- Department of Molecular Oncology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Balgees Alghamdi
- Department of Molecular Oncology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Rafiullah Rafiullah
- Center of Genomic Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Mohammed Aldawish
- Endocrinology & Diabetes Department, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Hindi Al-Hindi
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
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3
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Saha D, Ryan KR, Lakkaniga NR, Acharya B, Garcia NG, Smith EL, Frett B. Targeting Rearranged during Transfection in Cancer: A Perspective on Small-Molecule Inhibitors and Their Clinical Development. J Med Chem 2021; 64:11747-11773. [PMID: 34402300 DOI: 10.1021/acs.jmedchem.0c02167] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Rearranged during transfection (RET) is a receptor tyrosine kinase essential for the normal development and maturation of a diverse range of tissues. Aberrant RET signaling in cancers, due to RET mutations, gene fusions, and overexpression, results in the activation of downstream pathways promoting survival, growth, and metastasis. Pharmacological manipulation of RET is effective in treating RET-driven cancers, and efforts toward developing RET-specific therapies have increased over the last 5 years. In 2020, RET-selective inhibitors pralsetinib and selpercatinib achieved clinical approval, which marked the first approvals for kinase inhibitors specifically developed to target the RET oncoprotein. This Perspective discusses current development and clinical applications for RET precision medicine by providing an overview of the incremental improvement of kinase inhibitors for use in RET-driven malignancies.
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Affiliation(s)
- Debasmita Saha
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
| | - Katie Rose Ryan
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
| | - Naga Rajiv Lakkaniga
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
| | - Baku Acharya
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
| | - Noemi Garcia Garcia
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
| | - Erica Lane Smith
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
| | - Brendan Frett
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
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Salvatore D, Santoro M, Schlumberger M. The importance of the RET gene in thyroid cancer and therapeutic implications. Nat Rev Endocrinol 2021; 17:296-306. [PMID: 33603219 DOI: 10.1038/s41574-021-00470-9] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/15/2021] [Indexed: 02/07/2023]
Abstract
Since the discovery of the RET receptor tyrosine kinase in 1985, alterations of this protein have been found in diverse thyroid cancer subtypes. RET gene rearrangements are observed in papillary thyroid carcinoma, which result in RET fusion products. By contrast, single amino acid substitutions and small insertions and/or deletions are typical of hereditary and sporadic medullary thyroid carcinoma. RET rearrangements and mutations of extracellular cysteines facilitate dimerization and kinase activation, whereas mutations in the RET kinase coding domain drive dimerization-independent kinase activation. Thus, RET kinase inhibition is an attractive therapeutic target in patients with RET alterations. This approach was initially achieved using multikinase inhibitors, which affect multiple deregulated pathways that include RET kinase. In clinical practice, use of multikinase inhibitors in patients with advanced thyroid cancer resulted in therapeutic efficacy, which was associated with frequent and sometimes severe adverse effects. However, remarkable progress has been achieved with the identification of novel potent and selective RET kinase inhibitors for the treatment of advanced thyroid cancer. Although expanded clinical validation in future trials is needed, the sustained antitumoural activity and the improved safety profile of these novel compounds is opening a new exciting era in precision oncology for RET-driven cancers.
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Affiliation(s)
- Domenico Salvatore
- Department of Public Health, University of Naples "Federico II", Naples, Italy
| | - Massimo Santoro
- Department of Molecular Medicine and Medical Biotechnology, University of Naples "Federico II", Naples, Italy
| | - Martin Schlumberger
- Département de Médecine Nucléaire et Cancérologie Endocrinienne, Gustave Roussy, Université Paris-Saclay, Villejuif, France.
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5
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Multiple endocrine neoplasia type 2: A reveiw. Semin Cancer Biol 2021; 79:163-179. [PMID: 33812987 DOI: 10.1016/j.semcancer.2021.03.035] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 03/13/2021] [Accepted: 03/27/2021] [Indexed: 12/16/2022]
Abstract
Multiple endocrine neoplasias are rare hereditary syndromes some of them with malignant potential. Multiple endocrine neoplasia type 2 (MEN 2) is an autosomal dominant hereditary cancer syndrome due to germline variants in the REarranged during Transfection (RET) proto-oncogene. There are two distinct clinical entities: MEN 2A and MEN 2B. MEN 2A is associated with medullary thyroid carcinoma (MTC), phaeochromocytoma, primary hyperparathyroidism, cutaneous lichen amyloidosis and Hirschprung's disease and MEN 2B with MTC, phaeochromocytoma, ganglioneuromatosis of the aerodigestive tract, musculoskeletal and ophthalmologic abnormalities. Germline RET variants causing MEN 2 result in gain-of-function; since the discovery of the genetic variants a thorough search for genotype-phenotype associations began in order to understand the high variability both between families and within family members. These studies have successfully led to improved risk classification of prognosis in relation to the genotype, thus improving the management of the patients by thorough genetic counseling. The present review summarizes the recent developments in the knowledge of these hereditary syndromes as well as the impact on clinical management, including genetic counseling, of both individual patients and families. It furthermore points to future directions of research for better clarification of timing of treatments of the various manifestations of the syndromes in order to improve survival and morbidity in these patients.
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Oczko-Wojciechowska M, Czarniecka A, Gawlik T, Jarzab B, Krajewska J. Current status of the prognostic molecular markers in medullary thyroid carcinoma. Endocr Connect 2020; 9:R251-R263. [PMID: 33112827 PMCID: PMC7774764 DOI: 10.1530/ec-20-0374] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/14/2020] [Indexed: 12/13/2022]
Abstract
Medullary thyroid cancer (MTC) is a rare thyroid malignancy, which arises from parafollicular C-cells. It occurs in the hereditary or sporadic form. Hereditary type is a consequence of activation of the RET proto-oncogene by germline mutations, whereas about 80% of sporadic MTC tumors harbor somatic, mainly RET or rarely RAS mutations. According to the current ATA guidelines, a postoperative MTC risk stratification and long-term follow-up are mainly based on histopathological data, including tumor stage, the presence of lymph node and/or distant metastases (TNM classification), and serum concentration of two biomarkers: calcitonin (Ctn) and carcinoembryonic antigen (CEA). The type of RET germline mutation also correlates with MTC clinical characteristics. The most common and the best known RET mutation in sporadic MTC, localized at codon 918, is related to a more aggressive MTC course and poorer survival. However, even if histopathological or clinical features allow to predict a long-term prognosis, they are not sufficient to select the patients showing aggressive MTC courses requiring immediate treatment or those, who are refractory to different therapeutic methods. Besides the RET gene mutations, there are currently no other reliable molecular prognostic markers. This review summarizes the present data of genomic investigation on molecular prognostic factors in medullary thyroid cancer.
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Affiliation(s)
- Malgorzata Oczko-Wojciechowska
- Department of Genetic and Molecular Diagnostics of Cancer, M. Sklodowska-Curie Institute National Research Institute of Oncology Gliwice Branch, Gliwice, Poland
| | - Agnieszka Czarniecka
- Oncologic and Reconstructive Surgery Clinic, M. Sklodowska-Curie Institute National Research Institute of Oncology Gliwice Branch, Gliwice, Poland
| | - Tomasz Gawlik
- Nuclear Medicine and Endocrine Oncology Department, M. Sklodowska-Curie Institute National Research Institute of Oncology Gliwice Branch, Gliwice, Poland
| | - Barbara Jarzab
- Nuclear Medicine and Endocrine Oncology Department, M. Sklodowska-Curie Institute National Research Institute of Oncology Gliwice Branch, Gliwice, Poland
| | - Jolanta Krajewska
- Nuclear Medicine and Endocrine Oncology Department, M. Sklodowska-Curie Institute National Research Institute of Oncology Gliwice Branch, Gliwice, Poland
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Subbiah V, Yang D, Velcheti V, Drilon A, Meric-Bernstam F. State-of-the-Art Strategies for Targeting RET-Dependent Cancers. J Clin Oncol 2020; 38:1209-1221. [PMID: 32083997 DOI: 10.1200/jco.19.02551] [Citation(s) in RCA: 146] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Activating receptor tyrosine kinase RET (rarranged during transfection) gene alterations have been identified as oncogenic in multiple malignancies. RET gene rearrangements retaining the kinase domain are oncogenic drivers in papillary thyroid cancer, non-small-cell lung cancer, and multiple other cancers. Activating RET mutations are associated with different phenotypes of multiple endocrine neoplasia type 2 as well as sporadic medullary thyroid cancer. RET is thus an attractive therapeutic target in patients with oncogenic RET alterations. Multikinase inhibitors with RET inhibitor activity, such as cabozantinib and vandetanib, have been explored in the clinic for tumors with activating RET gene alterations with modest clinical efficacy. As a result of the nonselective nature of these multikinase inhibitors, patients had off-target adverse effects, such as hypertension, rash, and diarrhea. This resulted in a narrow therapeutic index of these drugs, limiting ability to dose for clinically effective RET inhibition. In contrast, the recent discovery and clinical validation of highly potent selective RET inhibitors (pralsetinib, selpercatinib) demonstrating improved efficacy and a more favorable toxicity profile are poised to alter the landscape of RET-dependent cancers. These drugs appear to have broad activity across tumors with activating RET alterations. The mechanisms of resistance to these next-generation highly selective RET inhibitors is an area of active research. This review summarizes the current understanding of RET alterations and the state-of-the-art treatment strategies in RET-dependent cancers.
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Affiliation(s)
- Vivek Subbiah
- Department of Investigational Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX.,Division of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX.,MD Anderson Cancer Network, Houston, TX
| | - Dong Yang
- Sheikh Khalifa Bin Zayed Al Nahyan Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX
| | | | - Alexander Drilon
- Thoracic Oncology Service, Early Drug Development Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY.,Department of Medicine, Weill Cornell Medical College, New York, NY
| | - Funda Meric-Bernstam
- Department of Investigational Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX.,Sheikh Khalifa Bin Zayed Al Nahyan Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX
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8
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Wilmshurst JM, Ouvrier RA, Ryan MM. Peripheral nerve disease secondary to systemic conditions in children. Ther Adv Neurol Disord 2019; 12:1756286419866367. [PMID: 31447934 PMCID: PMC6691669 DOI: 10.1177/1756286419866367] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 07/07/2019] [Indexed: 12/17/2022] Open
Abstract
This review is an overview of systemic conditions that can be associated with peripheral nervous system dysfunction. Children may present with neuropathic symptoms for which, unless considered, a causative systemic condition may not be recognized. Similarly, some systemic conditions may be complicated by comorbid peripheral neuropathies, surveillance for which is indicated. The systemic conditions addressed in this review are critical illness polyneuropathy, chronic renal failure, endocrine disorders such as insulin-dependent diabetes mellitus and multiple endocrine neoplasia type 2b, vitamin deficiency states, malignancies and reticuloses, sickle cell disease, neurofibromatosis, connective tissue disorders, bowel dysmotility and enteropathy, and sarcoidosis. In some disorders presymptomatic screening should be undertaken, while in others there is no benefit from early detection of neuropathy. In children with idiopathic peripheral neuropathies, systemic disorders such as celiac disease should be actively excluded. While management is predominantly focused on symptomatic care through pain control and rehabilitation, some neuropathies improve with effective control of the underlying etiology and in a small proportion a more targeted approach is possible. In conclusion, peripheral neuropathies can be associated with a diverse range of medical conditions and unless actively considered may not be recognized and inadequately managed.
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Affiliation(s)
- Jo M. Wilmshurst
- Department of Paediatric Neurology, Department of Paediatrics and Child Health, Red Cross War Memorial Children’s, Hospital Neuroscience Institute, University of Cape Town, Klipfontein Road, Cape Town, Western Cape, 7700, South Africa
| | - Robert A. Ouvrier
- The Institute of Neuroscience and Muscle Research, The Children’s Hospital at Westmead, Sydney, Australia
| | - Monique M. Ryan
- Department of Neurology, Royal Children’s Hospital, Murdoch Children’s Research Institute and University of Melbourne, Melbourne, Victoria, Australia
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9
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Loveday C, Josephs K, Chubb D, Gunning A, Izatt L, Tischkowitz M, Ellard S, Turnbull C. p.Val804Met, the Most Frequent Pathogenic Mutation in RET, Confers a Very Low Lifetime Risk of Medullary Thyroid Cancer. J Clin Endocrinol Metab 2018; 103:4275-4282. [PMID: 29590403 PMCID: PMC6194854 DOI: 10.1210/jc.2017-02529] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 03/20/2018] [Indexed: 01/16/2023]
Abstract
CONTEXT To date, penetrance figures for medullary thyroid cancer (MTC) for variants in rearranged during transfection (RET) have been estimated from families ascertained because of the presence of MTC. OBJECTIVE To gain estimates of penetrance, unbiased by ascertainment, we analyzed 61 RET mutations assigned as disease causing by the American Thyroid Association (ATA) in population whole-exome sequencing data. DESIGN For the 61 RET mutations, we used analyses of the observed allele frequencies in ∼51,000 individuals from the Exome Aggregation Consortium (ExAC) database that were not contributed via The Cancer Genome Atlas (TCGA; non-TCGA ExAC), assuming lifetime penetrance for MTC of 90%, 50%, and unbounded. SETTING Population-based. RESULTS Ten of 61 ATA disease-causing RET mutations were present in the non-TCGA ExAC population with observed frequency consistent with penetrance for MTC of >90%. For p.Val804Met, the lifetime penetrance for MTC, estimated from the allele frequency observed, was 4% [95% confidence interval (CI), 0.9% to 8%]. CONCLUSIONS Based on penetrance analysis in carrier relatives of p.Val804Met-positive cases of MTC, p.Val804Met is currently understood to have high-lifetime penetrance for MTC (87% by age 70), albeit of later onset of MTC than other RET mutations. Given our unbiased estimate of penetrance for RET p.Val804Met of 4% (95% CI, 0.9% to 8%), the current recommendation by the ATA of prophylactic thyroidectomy as standard for all RET mutation carriers is likely inappropriate.
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Affiliation(s)
- Chey Loveday
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, United Kingdom
| | - Katherine Josephs
- Department of Clinical Genetics, St George’s University Hospital, London, United Kingdom
| | - Daniel Chubb
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, United Kingdom
| | - Adam Gunning
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, United Kingdom
| | - Louise Izatt
- Department of Clinical Genetics, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - Marc Tischkowitz
- Department of Medical Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Sian Ellard
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, United Kingdom
| | - Clare Turnbull
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, United Kingdom
- Department of Clinical Genetics, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- William Harvey Research Institute, Queen Mary University, London, United Kingdom
- National Cancer Registration and Analysis Service, Public Health England, London, United Kingdom
- Correspondence and Reprint Requests: Clare Turnbull, MD, PhD, Division of Genetics and Epidemiology, The Institute of Cancer Research, 15 Cotswold Road, Sutton SM2 5NG, United Kingdom. E-mail:
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Mulligan LM. 65 YEARS OF THE DOUBLE HELIX: Exploiting insights on the RET receptor for personalized cancer medicine. Endocr Relat Cancer 2018; 25:T189-T200. [PMID: 29743166 DOI: 10.1530/erc-18-0141] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 05/08/2018] [Indexed: 12/20/2022]
Abstract
The focus of precision cancer medicine is the use of patient genetic signatures to predict disease occurrence and course and tailor approaches to individualized treatment to improve patient outcomes. The rearranged during transfection (RET) receptor tyrosine kinase represents a paradigm for the power of personalized cancer management to change cancer impact and improve quality of life. Oncogenic activation of RET occurs through several mechanisms including activating mutations and increased or aberrant expression. Activating RET mutations found in the inherited cancer syndrome multiple endocrine neoplasia 2 permit early diagnosis, predict disease course and guide disease management to optimize patient survival. Rearrangements of RET found in thyroid and lung tumors provide insights on potential disease aggressiveness and offer opportunities for RET-targeted therapy. Aberrant RET expression in a subset of cases is associated with tumor dissemination, resistance to therapies and/or poorer prognosis in multiple cancers. The potential of RET targeting through repurposing of small-molecule multikinase inhibitors, selective RET inhibitors or other novel approaches provides exciting opportunities to individualize therapies across multiple pathologies where RET oncogenicity contributes to cancer outcomes.
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Affiliation(s)
- Lois M Mulligan
- Division of Cancer Biology and GeneticsCancer Research Institute, Queen's University, Kingston, Ontario, Canada
- Department of Pathology and Molecular MedicineQueen's University, Kingston, Ontario, Canada
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Wasserman JD, Tomlinson GE, Druker H, Kamihara J, Kohlmann WK, Kratz CP, Nathanson KL, Pajtler KW, Parareda A, Rednam SP, States LJ, Villani A, Walsh MF, Zelley K, Schiffman JD. Multiple Endocrine Neoplasia and Hyperparathyroid-Jaw Tumor Syndromes: Clinical Features, Genetics, and Surveillance Recommendations in Childhood. Clin Cancer Res 2018; 23:e123-e132. [PMID: 28674121 DOI: 10.1158/1078-0432.ccr-17-0548] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 05/02/2017] [Accepted: 05/16/2017] [Indexed: 12/19/2022]
Abstract
Children and adolescents who present with neuroendocrine tumors are at extremely high likelihood of having an underlying germline predisposition for the multiple endocrine neoplasia (MEN) syndromes, including MEN1, MEN2A and MEN2B, MEN4, and hyperparathyroid-jaw tumor (HPT-JT) syndromes. Each of these autosomal dominant syndromes results from a specific germline mutation in unique genes: MEN1 is due to pathogenic MEN1 variants (11q13), MEN2A and MEN2B are due to pathogenic RET variants (10q11.21), MEN4 is due to pathogenic CDKN1B variants (12p13.1), and the HPT-JT syndrome is due to pathogenic CDC73 variants (1q25). Although each of these genetic syndromes share the presence of neuroendocrine tumors, each syndrome has a slightly different tumor spectrum with specific surveillance recommendations based upon tumor penetrance, including the age and location for which specific tumor types most commonly present. Although the recommended surveillance strategies for each syndrome contain similar approaches, important differences do exist among them. Therefore, it is important for caregivers of children and adolescents with these syndromes to become familiar with the unique diagnostic criteria for each syndrome, and also to be aware of the specific tumor screening and prophylactic surgery recommendations for each syndrome. Clin Cancer Res; 23(13); e123-e32. ©2017 AACRSee all articles in the online-only CCR Pediatric Oncology Series.
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Affiliation(s)
- Jonathan D Wasserman
- Division of Endocrinology, The Hospital for Sick Children, Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada.
| | - Gail E Tomlinson
- Department of Pediatrics, Division of Hematology and Oncology and Greehey Children's Cancer Research Institute, The University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Harriet Druker
- Division of Haematology-Oncology, The Hospital for Sick Children, Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
| | - Junne Kamihara
- Division of Hematology/Oncology, Boston Children's Hospital and Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Wendy K Kohlmann
- Huntsmann Cancer Institute, University of Utah, Salt Lake City, Utah
| | - Christian P Kratz
- Pediatric Hematology and Oncology, Hannover Medical School, Hannover, Germany
| | - Katherine L Nathanson
- Department of Medicine, Division of Translational Medicine and Human Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Kristian W Pajtler
- Department of Pediatric Oncology, Hematology and Immunology, University Hospital, Heidelberg, Germany.,Division of Pediatric Neuro-Oncology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Andreu Parareda
- Division of Oncology, Predisposition and Survivorship Units, Sant Joan de Déu - Barcelona Children's Hospital, Barcelona, Spain
| | - Surya P Rednam
- Department of Pediatrics, Baylor College of Medicine, Texas Children's Cancer Center, Texas Children's Hospital, Houston, Texas
| | - Lisa J States
- Department of Radiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Anita Villani
- Division of Haematology-Oncology, The Hospital for Sick Children, Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
| | - Michael F Walsh
- Departments of Medicine and Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Kristin Zelley
- Division of Oncology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Joshua D Schiffman
- Department of Pediatrics and Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah
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12
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Castinetti F, Moley J, Mulligan L, Waguespack SG. A comprehensive review on MEN2B. Endocr Relat Cancer 2018; 25:T29-T39. [PMID: 28698189 DOI: 10.1530/erc-17-0209] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 07/10/2017] [Indexed: 12/17/2022]
Abstract
MEN2B is a very rare autosomal dominant hereditary tumor syndrome associated with medullary thyroid carcinoma (MTC) in 100% cases, pheochromocytoma in 50% cases and multiple extra-endocrine features, many of which can be quite disabling. Only few data are available in the literature. The aim of this review is to try to give further insights into the natural history of the disease and to point out the missing evidence that would help clinicians optimize the management of such patients. MEN2B is mainly characterized by the early occurrence of MTC, which led the American Thyroid Association to recommend preventive thyroidectomy before the age of 1 year. However, as the majority of mutations are de novo, improved knowledge of the nonendocrine signs would help to lower the age of diagnosis and improve long-term outcomes. Future large-scale studies will be aimed at characterizing more in detail the main characteristics and outcomes of MEN2B.
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Affiliation(s)
- Frederic Castinetti
- Department of EndocrinologyAix Marseille University, CNRS UM 7286, Assistance Publique Hopitaux de Marseille, Marseille, France
| | - Jeffrey Moley
- Department of SurgeryWashington University School of Medicine, St Louis, Missouri, USA
| | - Lois Mulligan
- Division of Cancer Biology and GeneticsCancer Research Institute, Queen's University, Kingston, Ontario, Canada
| | - Steven G Waguespack
- Department of Endocrine Neoplasia and Hormonal DisordersThe University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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13
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Lebeault M, Pinson S, Guillaud-Bataille M, Gimenez-Roqueplo AP, Carrie A, Barbu V, Pigny P, Bezieau S, Rey JM, Delvincourt C, Giraud S, Veyrat-Durebex C, Saulnier P, Bouzamondo N, Chabbert M, Blin J, Mohamed A, Romanet P, Borson-Chazot F, Rohmer V, Barlier A, Mirebeau-Prunier D. Nationwide French Study of RET Variants Detected from 2003 to 2013 Suggests a Possible Influence of Polymorphisms as Modifiers. Thyroid 2017; 27:1511-1522. [PMID: 28946813 DOI: 10.1089/thy.2016.0399] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND The presence of single nucleotide polymorphisms (SNPs) in the REarranged during Transfection (RET) gene has been investigated with regard to their potential role in the development or progression of medullary thyroid cancer or pheochromocytomas (PHEO) in patients with the multiple endocrine neoplasia type 2 (MEN2) syndrome. The aim of this study was to evaluate the spectrum of RET variants in France between 2003 and 2013, and to evaluate the impact of SNPs on the MEN2 A phenotype. METHODS In this retrospective cohort study, RET variants were screened in 5109 index cases, and RET pathogenic variants were screened in 2214 relatives. Exons 5, 8, 10, 11, 13, 14, 15, and 16 were characterized by Sanger sequencing. RET pathogenic variants, RET variants with unknown functional significance (VUS), and four RET SNP variants-G691S (rs1799939), L769L (rs1800861), S836S (rs1800862), and S904S (rs1800863)-were characterized and are reported in index cases. In silico analysis and classification following the recommendation of the American College of Medical Genetics and Genomics was performed for RET VUS. Each patient's age at the time of diagnosis, sex, and the endocrine neoplasias present at molecular diagnosis were recorded. RESULTS Twenty-six single VUS in RET without any well-defined risk profiles were found in 33 patients. Nine of these were considered probably pathogenic, 11 of uncertain significance, and six as probably benign. Three double pathogenic variants found in three patients were classified as pathogenic. A study of the entire cohort showed that patients carrying pathogenic variants or VUS in RET together with PHEO were diagnosed earlier than the others. The presence of the G691S SNP, or a combination of SNPs, increased the risk of developing PHEO but did not modify the date of the diagnosis. No association was found between SNPs and medullary thyroid cancer or hyperparathyroidism. CONCLUSIONS The findings propose a classification of 15 of the 26 VUS in RET without any well-defined risk profiles and suggest that the G691S SNP, or a combination of SNPs, may be associated with the development of PHEO.
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Affiliation(s)
| | - Stéphane Pinson
- 2 Laboratoire de Génétique Moléculaire , CHU Lyon, Lyon France
- 3 Réseau TenGen , France
| | - Marine Guillaud-Bataille
- 3 Réseau TenGen , France
- 4 Département de Biologie et Pathologie Médicale, Gustave Roussy, Université de Paris-Saclay, Villejuif, France
| | - Anne-Paule Gimenez-Roqueplo
- 3 Réseau TenGen , France
- 5 Service de Génétique, Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, Paris, France
| | - Alain Carrie
- 3 Réseau TenGen , France
- 6 Centre de Génétique Moléculaire Chromosomique, Assistance Publique Hôpitaux de Paris , Paris, France
| | - Véronique Barbu
- 3 Réseau TenGen , France
- 7 Laboratoire Commun de Biologie et Génétique Moléculaires , HUEP, SAT, AP-HP Paris, France
| | - Pascal Pigny
- 3 Réseau TenGen , France
- 8 Laboratoire de Biochimie et Oncologie Moléculaire , CHU Lille, Lille, France
| | - Stéphane Bezieau
- 3 Réseau TenGen , France
- 9 Laboratoire de Génétique Moléculaire , CHU Nantes, Nantes, France
| | - Jean-Marc Rey
- 3 Réseau TenGen , France
- 10 Laboratoire de Biopathologie Cellulaire et Tissulaire des Tumeurs , CHU Montpellier, Montpellier, France
| | - Chantal Delvincourt
- 3 Réseau TenGen , France
- 11 Laboratoire de Biologie Oncologique , CHU Reims, Reims, France
| | - Sophie Giraud
- 2 Laboratoire de Génétique Moléculaire , CHU Lyon, Lyon France
- 3 Réseau TenGen , France
| | - Charlotte Veyrat-Durebex
- 3 Réseau TenGen , France
- 12 UMR CNRS 6015-INSERMU1083, Laboratoire MITOVASC, Université d'Angers, Angers, France
- 13 Département de Biochimie et Génétique, CHU Angers , Angers, France
| | - Patrick Saulnier
- 14 Cellule de Méthodologie et Biostatistiques, Délégation à la Recherche Clinique et l'Innovation-DRCI, CHU Angers , Angers, France
| | - Nathalie Bouzamondo
- 3 Réseau TenGen , France
- 13 Département de Biochimie et Génétique, CHU Angers , Angers, France
| | - Marie Chabbert
- 12 UMR CNRS 6015-INSERMU1083, Laboratoire MITOVASC, Université d'Angers, Angers, France
| | - Julien Blin
- 15 Institut National du Cancer-INCa , Paris, France
| | - Amira Mohamed
- 3 Réseau TenGen , France
- 16 Aix Marseille Univ, CNRS, CRN2M, UMR 7286, and APHM La Conception Hospital, Molecular Biology Laboratory, Marseille, France
| | - Pauline Romanet
- 3 Réseau TenGen , France
- 16 Aix Marseille Univ, CNRS, CRN2M, UMR 7286, and APHM La Conception Hospital, Molecular Biology Laboratory, Marseille, France
| | - Francoise Borson-Chazot
- 3 Réseau TenGen , France
- 17 Hospices Civils de Lyon, Pôle IMER; Université Claude Bernard Lyon 1, HESPER EA 7425 Lyon, France
| | - Vincent Rohmer
- 1 Service d'Endocrinologie, CHU Angers , Angers, France
- 3 Réseau TenGen , France
| | - Anne Barlier
- 3 Réseau TenGen , France
- 16 Aix Marseille Univ, CNRS, CRN2M, UMR 7286, and APHM La Conception Hospital, Molecular Biology Laboratory, Marseille, France
| | - Delphine Mirebeau-Prunier
- 3 Réseau TenGen , France
- 12 UMR CNRS 6015-INSERMU1083, Laboratoire MITOVASC, Université d'Angers, Angers, France
- 13 Département de Biochimie et Génétique, CHU Angers , Angers, France
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14
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Opsahl EM, Brauckhoff M, Schlichting E, Helset K, Svartberg J, Brauckhoff K, Mæhle L, Engebretsen LF, Sigstad E, Grøholt KK, Akslen LA, Jørgensen LH, Varhaug JE, Bjøro T. A Nationwide Study of Multiple Endocrine Neoplasia Type 2A in Norway: Predictive and Prognostic Factors for the Clinical Course of Medullary Thyroid Carcinoma. Thyroid 2016; 26:1225-38. [PMID: 27400880 DOI: 10.1089/thy.2015.0673] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND Multiple endocrine neoplasia type 2A (MEN 2A) is an autosomal dominant syndrome caused by activating germline mutations in the RET (REarranged during Transfection) proto-oncogene. MEN 2A has a strong (>95%) and age-dependent (5-25 years) clinical penetrance of medullary thyroid carcinoma (MTC). Several major studies have analyzed the predictive and prognostic factors for MEN 2A to find indicators that predict the optimal timing of prophylactic thyroidectomy. The aims of this study were to describe all known RET positive MEN 2A patients diagnosed in Norway and to evaluate the clinical course of MTC, as well as its predictive and prognostic factors. METHODS This nationwide retrospective cohort study included data for 65 (14 index and 51 screening patients) out of a total of 67 MEN 2A patients with the RET gene mutation who were diagnosed in Norway since 1974. Data were collected by reviewing patient files. The variables analyzed were genotype, phenotype, preoperative basal calcitonin, age at thyroid surgery, central lymph node dissection and nodal status at primary surgery, number of surgical procedures, and biochemical cure. Of the 65 patients, 60 had undergone thyroid surgery. The median follow-up period was 9.9 years. The patients were divided into pre-RET-and RET-era, which included patients who had thyroid surgery before January 1, 1994, and after, respectively. RESULTS In index and screening patients, MTC was found, respectively, in 100% and 45% of cases, central lymph node dissection at primary surgery was done for 64% and 52% of patients, and the median total number of surgical procedures was two (range 1-6) and one (range 1-4). At primary surgery, all patients (n = 13) with lymph node metastases had preoperative basal calcitonin levels ≥68 pg/mL, and all patients (n = 17) without central lymph node dissection and preoperative basal calcitonin <40 pg/mL were biochemically cured. Multivariate analysis showed that preoperative basal calcitonin was a significant predictive factor for MTC superior to age at thyroid surgery when analyzing the entire period (p = 0.009) and the RET-era separately (p = 0.021). Prognostic factors for biochemical cure were preoperative basal calcitonin, central lymph node dissection, and nodal status at primary surgery (p = 0.037, p = 0.002, and p = 0.005) when analyzing the entire period, but only nodal status at primary surgery when the RET-era was considered separately (p = 0.006). CONCLUSIONS Preoperative basal calcitonin alone can serve as an indicator for optimal timing and the extent of thyroid surgery for MEN 2A patients that could be considered safe. The results are consistent with previously reported data.
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Affiliation(s)
- Else Marie Opsahl
- 1 Department of Oncology, Section for Breast and Endocrine Surgery, Oslo University Hospital , Oslo, Norway
- 2 Institute of Clinical Medicine, University of Oslo , Oslo, Norway
| | - Michael Brauckhoff
- 3 Department of Breast and Endocrine Surgery, Haukeland University Hospital , Bergen, Norway
- 4 Department of Clinical Science, University of Bergen , Bergen, Norway
| | - Ellen Schlichting
- 1 Department of Oncology, Section for Breast and Endocrine Surgery, Oslo University Hospital , Oslo, Norway
| | - Kristin Helset
- 5 Department of Breast and Endocrine Surgery, St. Olavs University Hospital , Trondheim, Norway
| | - Johan Svartberg
- 6 Division of Internal Medicine, University Hospital of North Norway , Tromsø, Norway
- 7 Institute of Clinical Medicine, UIT, The Arctic University of Norway , Tromsø, Norway
| | - Katrin Brauckhoff
- 3 Department of Breast and Endocrine Surgery, Haukeland University Hospital , Bergen, Norway
| | - Lovise Mæhle
- 8 Department of Medical Genetics, Oslo University Hospital , Oslo, Norway
| | | | - Eva Sigstad
- 10 Department of Pathology, Oslo University Hospital , Oslo, Norway
| | | | - Lars Andreas Akslen
- 11 Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, Section for Pathology, University of Bergen , Bergen, Norway
- 12 Department of Pathology, Haukeland University Hospital , Bergen, Norway
| | | | - Jan Erik Varhaug
- 3 Department of Breast and Endocrine Surgery, Haukeland University Hospital , Bergen, Norway
- 4 Department of Clinical Science, University of Bergen , Bergen, Norway
| | - Trine Bjøro
- 2 Institute of Clinical Medicine, University of Oslo , Oslo, Norway
- 14 Department of Medical Biochemistry, Oslo University Hospital , Oslo, Norway
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15
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Abstract
Hereditary medullary thyroid carcinoma (MTC) represents up to one-third of MTC cases and includes multiple endocrine neoplasia syndrome type 2A (and its variant familial MTC) and 2B. The aim of this paper is to provide an overview of the disease focusing on the management of hereditary MTC patients, who have already developed tumor, as well as discuss the recommended approach for asymptomatic family members carrying the same mutation. A PubMed search was performed to review recent literature on diagnosis, genetic testing, and surgical and medical management of hereditary MTC. The wide use of genetic testing for RET mutations has markedly influenced the course of hereditary MTC. Prophylactic thyroidectomy of RET carriers at an early age eliminates the risk of developing MTC later in life. Pre-operative staging is a strong prognostic factor in patients, who have developed MTC. The use of recently approved tyrosine kinase inhibitors (vandetanib, cabozantinib) holds promising results for the treatment of unresectable, locally advanced, and progressive metastatic MTC. Genetic testing of the RET gene is a powerful tool in the diagnosis and prognosis of MTC. Ongoing research is expected to add novel treatment options for patients with advanced, progressive disease.
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Affiliation(s)
- Theodora Pappa
- Section of Endocrinology, Diabetes and Metabolism, Department of Medicine, The University of Chicago, Chicago, IL, USA
- Endocrine Unit, Department of Medical Therapeutics, Alexandra Hospital, Athens University School of Medicine, 80 Vassilissis Sofias Avenue, 11528, Athens, Greece
| | - Maria Alevizaki
- Endocrine Unit, Department of Medical Therapeutics, Alexandra Hospital, Athens University School of Medicine, 80 Vassilissis Sofias Avenue, 11528, Athens, Greece.
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16
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Joshi RR, Heineman TE, Kutler DI, Cohen MA, Kuhel WI. Multiple endocrine neoplasia type 2 kindred with novel tandem RET mutations: Case report with an applied in silico mutational tolerance analysis. Head Neck 2016; 38 Suppl 1:E1881-5. [PMID: 26876062 DOI: 10.1002/hed.24340] [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: 08/25/2015] [Accepted: 10/17/2015] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND The American Thyroid Association (ATA) has established guidelines for prophylactic thyroidectomy in multiple endocrine neoplasia type 2A (MEN2A) based on rearranged during transfection (RET) mutations. In silico analysis, which uses computer modeling to predict alterations in protein structure, is a new method for studying these mutations. METHODS We describe a kindred with MEN2A, all sharing a well-documented RET mutation, p.C634Y, as well as a mutation of undetermined significance, p.I852M, which we analyzed via in silico analysis. RESULTS The p.C634Y mutation resulted in severe predicted RET alterations, whereas the p.I852M resulted in only modest changes. Both mutations together resulted in only a small additional disruptive effect in protein structure beyond that which occurred with p.C634Y alone. CONCLUSION Although in silico analysis may be helpful in quantitating changes in protein structure that occur in patients who have novel RET mutations (single or multiple), additional factors must account for the highly variable aggressiveness of the disease (C-cell hyperplasia/medullary thyroid carcinoma [MTC]) noted in our kindred. © 2016 Wiley Periodicals, Inc. Head Neck 38: E1881-E1885, 2016.
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Affiliation(s)
- Rohan R Joshi
- Weill Cornell Medical College/NewYork Presbyterian Hospital, Department of Otolaryngology-Head and Neck Surgery, New York, New York
| | - Thomas E Heineman
- University of California Los Angeles, Department of Otolaryngology-Head and Neck Surgery, Los Angeles, CA
| | - David I Kutler
- Weill Cornell Medical College/NewYork Presbyterian Hospital, Department of Otolaryngology-Head and Neck Surgery, New York, New York
| | - Marc A Cohen
- Weill Cornell Medical College/NewYork Presbyterian Hospital, Department of Otolaryngology-Head and Neck Surgery, New York, New York
| | - William I Kuhel
- Weill Cornell Medical College/NewYork Presbyterian Hospital, Department of Otolaryngology-Head and Neck Surgery, New York, New York
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17
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Pappa T. The role of genetic screening in medullary thyroid cancer: a clinician's view on the recent ATA guidelines. Expert Rev Endocrinol Metab 2015; 10:345-347. [PMID: 30293499 DOI: 10.1586/17446651.2015.1057121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The American Thyroid Association recently released its revised guidelines on the management of medullary thyroid carcinoma. This editorial highlights the American Thyroid Association recommendations on genetic screening for medullary thyroid carcinoma and briefly discusses the future perspectives from the clinician's standpoint.
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Affiliation(s)
- Theodora Pappa
- a Thyroid Study Unit, Section of Endocrinology, Diabetes and Metabolism, The University of Chicago, Chicago, IL, USA
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18
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Wells SA, Asa SL, Dralle H, Elisei R, Evans DB, Gagel RF, Lee N, Machens A, Moley JF, Pacini F, Raue F, Frank-Raue K, Robinson B, Rosenthal MS, Santoro M, Schlumberger M, Shah M, Waguespack SG. Revised American Thyroid Association guidelines for the management of medullary thyroid carcinoma. Thyroid 2015; 25:567-610. [PMID: 25810047 PMCID: PMC4490627 DOI: 10.1089/thy.2014.0335] [Citation(s) in RCA: 1289] [Impact Index Per Article: 143.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
INTRODUCTION The American Thyroid Association appointed a Task Force of experts to revise the original Medullary Thyroid Carcinoma: Management Guidelines of the American Thyroid Association. METHODS The Task Force identified relevant articles using a systematic PubMed search, supplemented with additional published materials, and then created evidence-based recommendations, which were set in categories using criteria adapted from the United States Preventive Services Task Force Agency for Healthcare Research and Quality. The original guidelines provided abundant source material and an excellent organizational structure that served as the basis for the current revised document. RESULTS The revised guidelines are focused primarily on the diagnosis and treatment of patients with sporadic medullary thyroid carcinoma (MTC) and hereditary MTC. CONCLUSIONS The Task Force developed 67 evidence-based recommendations to assist clinicians in the care of patients with MTC. The Task Force considers the recommendations to represent current, rational, and optimal medical practice.
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Affiliation(s)
- Samuel A. Wells
- Genetics Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Sylvia L. Asa
- Department of Pathology, University Health Network, and Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Henning Dralle
- Department of General, Visceral, and Vascular Surgery, University Hospital, University of Halle-Wittenberg, Halle/Saale, Germany
| | - Rossella Elisei
- Department of Endocrinology, University of Pisa, Pisa, Italy
| | - Douglas B. Evans
- Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Robert F. Gagel
- Department of Endocrine Neoplasia and Hormonal Disorders, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Nancy Lee
- Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Andreas Machens
- Department of General, Visceral, and Vascular Surgery, University Hospital, University of Halle-Wittenberg, Halle/Saale, Germany
| | - Jeffrey F. Moley
- Department of Surgery, Washington University School of Medicine, St. Louis, Missouri
| | - Furio Pacini
- Section of Endocrinology and Metabolism, Department of Internal Medicine, Endocrinology and Metabolism and Biochemistry, University of Siena, Policlinico Santa Maria alle Scotte, Siena, Italy
| | - Friedhelm Raue
- Endocrine Practice, Moleculargenetic Laboratory, Medical Faculty, University of Heidelberg, Heidelberg, Germany
| | - Karin Frank-Raue
- Endocrine Practice, Moleculargenetic Laboratory, Medical Faculty, University of Heidelberg, Heidelberg, Germany
| | - Bruce Robinson
- University of Sydney School of Medicine, Sydney, New South Wales, Australia
| | - M. Sara Rosenthal
- Departments of Internal Medicine, Pediatrics and Behavioral Science, University of Kentucky, Lexington, Kentucky
| | - Massimo Santoro
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Universita' di Napoli “Federico II,” Napoli, Italy
| | - Martin Schlumberger
- Institut Gustave Roussy, Service de Medecine Nucleaire, Université of Paris-Sud, Villejuif, France
| | - Manisha Shah
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University, Columbus, Ohio
| | - Steven G. Waguespack
- Department of Endocrine Neoplasia and Hormonal Disorders, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
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19
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Heineman TE, Joshi R, Cohen MA, Kuhel WI, Kutler DI. In silico analysis of RET variants in medullary thyroid cancer: from the computer to the bedside. Otolaryngol Head Neck Surg 2015; 152:650-4. [PMID: 25733075 DOI: 10.1177/0194599815569709] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Accepted: 01/07/2015] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The American Thyroid Association (ATA) medullary thyroid cancer (MTC) guidelines group RET variants, in the setting of familial medullary thyroid cancer and multiple endocrine neoplasia type 2, into 4 classes of severity based on epidemiological data. The aim of this study was to determine if genotype correlates with phenotype in RET missense mutations. STUDY DESIGN In silico mutational tolerance prediction. SETTING Academic research hospital. SUBJECTS AND METHODS We analyzed all RET variants currently listed in the ATA guidelines for the management of MTC using 2 computer-based (in silico) mutation tolerance prediction approaches: PolyPhen-2 HumVar and PolyPhen-2 HumDiv. Our analysis also included 27 different RET single-nucleotide polymorphisms resulting in missense variants. RESULTS There was a statistically significant difference in the overall HumDiv score between ATA groups A and B (P = .025) and a statistically significant different HumVar score between benign polymorphisms and ATA group A (P = .023). Overall, RET variants associated with a less aggressive clinical phenotype generally had a lower Hum Div/Var score. CONCLUSIONS Polyphen-2 Hum Div/Var may provide additional clinical data to help distinguish benign from MEN2/familial medullary thyroid carcinoma-causing RET variants as well as less aggressive phenotypes (ATA A) from more aggressive ones (ATA B-C). In silico genetic analyses, with proper validation, may predict the phenotypic severity of RET variants, providing clinicians with a tool to aid clinical decision making in cases in which the RET variant is currently unknown or little epidemiological data are available.
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Affiliation(s)
| | - Rohan Joshi
- Department of Otolaryngology-Head and Neck Surgery, Weill Cornell Medical College/New York Presbyterian, New York, New York, USA
| | - Marc A Cohen
- Department of Otolaryngology-Head and Neck Surgery, Weill Cornell Medical College/New York Presbyterian, New York, New York, USA
| | - William I Kuhel
- Department of Otolaryngology-Head and Neck Surgery, Weill Cornell Medical College/New York Presbyterian, New York, New York, USA
| | - David I Kutler
- Department of Otolaryngology-Head and Neck Surgery, Weill Cornell Medical College/New York Presbyterian, New York, New York, USA
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20
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Kihara M, Miyauchi A, Yoshida H, Yamada O, Masuoka H, Yabuta T, Higashiyama T, Fukushima M, Ito Y, Kobayashi K, Miya A. Tandem Germline RET Mutations in a Family Pathogenetic for Multiple Endocrine Neoplasia 2B, Confirmed by a Natural Experiment. Eur Thyroid J 2014; 3:272-7. [PMID: 25759805 PMCID: PMC4311302 DOI: 10.1159/000369134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 10/14/2014] [Indexed: 02/04/2023] Open
Abstract
A family with germline tandem V804M/Y806C mutations in the RET proto-oncogene was reported. The in vitro study results showing that these mutations were on the same allele and that RET with these mutations had a moderate transforming activity were confirmed by the clinical features of the offspring as a natural experiment. Thus, the tandem double RET mutations are pathogenetic for MEN 2B.
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Affiliation(s)
| | - Akira Miyauchi
- Department of Surgery, Kuma Hospital, Kobe, Japan
- *Akira Miyauchi, MD, Department of Surgery, Kuma Hospital, 8-2-35 Shimoyamate-dori, Chuo-ku, Hyogo, Kobe 650-0011 (Japan), E-Mail
| | | | - Osamu Yamada
- Department of Surgery, Kuma Hospital, Kobe, Japan
| | | | | | | | | | - Yasuhiro Ito
- Department of Surgery, Kuma Hospital, Kobe, Japan
| | | | - Akihiro Miya
- Department of Surgery, Kuma Hospital, Kobe, Japan
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21
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Abstract
The RET receptor tyrosine kinase is crucial for normal development but also contributes to pathologies that reflect both the loss and the gain of RET function. Activation of RET occurs via oncogenic mutations in familial and sporadic cancers - most notably, those of the thyroid and the lung. RET has also recently been implicated in the progression of breast and pancreatic tumours, among others, which makes it an attractive target for small-molecule kinase inhibitors as therapeutics. However, the complex roles of RET in homeostasis and survival of neural lineages and in tumour-associated inflammation might also suggest potential long-term pitfalls of broadly targeting RET.
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Affiliation(s)
- Lois M Mulligan
- Division of Cancer Biology and Genetics, Cancer Research Institute and Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario K7L 3N6, Canada
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