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Yang Z, Qi X, Gross N, Kou X, Bai Y, Feng Y, Wang B, Zafereo ME, Li G, Sun C, Li H, Chen X, Huang Z. The synergy of germline C634Y and V292M RET mutations in a northern Chinese family with multiple endocrine neoplasia type 2A. J Cell Mol Med 2020; 24:13163-13170. [PMID: 32989896 PMCID: PMC7701567 DOI: 10.1111/jcmm.15922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 08/31/2020] [Accepted: 09/05/2020] [Indexed: 11/28/2022] Open
Abstract
Genetic analysis for germline mutations of RET proto-oncogene has provided a basis for individual management of medullary thyroid carcinoma (MTC) and pheochromocytoma. Most of compound mutations have more aggressive phenotypes than single point mutations, but the compound C634Y/V292M variant in MTC has never been reported. Thus, we retrospectively investigated synergistic effect of C634Y and V292M RET germline mutations in family members with multiple endocrine neoplasia type 2A. Nine of 14 family members in a northern Chinese family underwent RET mutation screening using next-generation sequencing and PCR followed by direct bidirectional DNA sequencing. Clinical features of nine individuals were retrospectively carefully reviewed. In vitro, the scratch-wound assay was used to investigate the difference between the cells carrying different mutations. We find no patients died of MTC. All 3 carriers of the V292M variant were asymptomatic and did not have biochemical or structural evidence of disease (age: 82, 62 and 58). Among 4 C634Y mutation carriers, 2 patients had elevated calcitonin with the highest (156 pg/mL) in an 87-year-old male. Two carriers of compound C634Y/V292M trans variant had bilateral MTC with pheochromocytoma or lymph node metastasis (age: 54 and 41 years, respectively). Further, the compound C634Y/V292M variant had a faster migration rate than either single point mutation in vitro (P < .05). In conclusion, the V292M RET variant could be classified as 'likely benign' according to ACMG (2015). The compound variant V292M/C634Y was associated with both more aggressive clinical phenotype and faster cell growth in vitro than was either single mutation.
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Affiliation(s)
- Zheng Yang
- Department of Otolaryngology Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Xinmeng Qi
- Department of Otolaryngology Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Neil Gross
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Xiujuan Kou
- Department of Otolaryngology Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yunlong Bai
- Department of Otolaryngology Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yaru Feng
- Department of Otolaryngology Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Bochun Wang
- Department of Otolaryngology Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Mark E Zafereo
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Guojun Li
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Chuanzheng Sun
- Department of Head and Neck Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Huihui Li
- Physical Examination Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaohong Chen
- Department of Otolaryngology Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Zhigang Huang
- Department of Otolaryngology Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
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Twenty-Five Years Experience on RET Genetic Screening on Hereditary MTC: An Update on The Prevalence of Germline RET Mutations. Genes (Basel) 2019; 10:genes10090698. [PMID: 31510104 PMCID: PMC6771015 DOI: 10.3390/genes10090698] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 08/09/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Pathogenic germline mutations affecting the RET proto-oncogene underlie the development of hereditary medullary thyroid carcinoma (MTC). The aims of this study were to evaluate the prevalence of germline RET mutations in a large series of MTC, collected over the last 25 years, and to reappraise their clinical significance. METHODS We performed RET genetic screening in 2031 Italian subjects: patients who presented with sporadic (n = 1264) or hereditary (n = 117) MTC, plus 650 relatives. RESULTS A RET germline mutation was found in 115/117 (98.3%) hereditary and in 78/1264 (6.2%) apparently sporadic cases: in total, 42 distinct germline variants were found. The V804M mutation was the most prevalent in our cohort, especially in cases that presented as sporadic, while mutations affecting cysteine residues were the most frequent in the group of clinically hereditary cases. All M918T mutations were "de novo" and exclusively associated with MEN2B. Several variants of unknown significance (VUS) were also found. CONCLUSIONS a) RET genetic screening is informative in both hereditary and sporadic MTC; b) the prevalence of different mutations varies with V804M being the most frequent; c) the association genotype-phenotype is confirmed; d) by RET screening, some VUS can be found but their pathogenic role must be demonstrated before screening the family.
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Martins-Costa MC, Lindsey SC, Cunha LL, Carreiro-Filho FP, Cortez AP, Holanda ME, Farias JWMD, Lima SB, Ferreira LAA, Maia Filho PC, Camacho CP, Furuzawa GK, Kunii IS, Dias-da-Silva MR, Martins JRM, Maciel RMB. A pioneering RET genetic screening study in the State of Ceará, Brazil, evaluating patients with medullary thyroid cancer and at-risk relatives: experience with 247 individuals. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2019; 62:623-635. [PMID: 30624503 PMCID: PMC10118677 DOI: 10.20945/2359-3997000000088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 09/25/2018] [Indexed: 11/23/2022]
Abstract
OBJECTIVE Initial diagnosis of medullary thyroid carcinoma (MTC) is frequently associated with advanced stages and a poor prognosis. Thus, the need for earlier diagnoses and detection in relatives at risk for the disease has led to increased use of RET genetic screening. SUBJECTS AND METHODS We performed RET screening in 247 subjects who were referred to the Brazilian Research Consortium for Multiple Endocrine Neoplasia (BRASMEN) Center in the State of Ceará. Direct genetic sequencing was used to analyze exons 8, 10, 11, and 13-16 in MTC index cases and specific exons in at risk relatives. Afterward, clinical follow-up was offered to all the patients with MTC and their affected relatives. RESULTS RET screening was performed in 60 MTC index patients and 187 at-risk family members. At the initial clinical assessment of the index patients, 54 (90%) were diagnosed with apparently sporadic disease and 6 (10%) diagnosed with hereditary disease. After RET screening, we found that 31 (52%) index patients had sporadic disease, and 29 (48%) had hereditary disease. Regarding at-risk relatives, 73/187 were mutation carriers. Mutations in RET codon 804 and the rare p.M918V mutation were the most prevalent. CONCLUSIONS Performing RET screening in Ceará allowed us to identify a different mutation profile in this region compared with other areas. RET screening also enabled the diagnosis of a significant number of hereditary MTC patients who were initially classified as sporadic disease patients and benefited their relatives, who were unaware of the risks and the consequences of bearing a RET mutation.
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Affiliation(s)
- Maria Cecília Martins-Costa
- Centro de Doenças da Tiroide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brasil.,Centro de Endocrinologia e Metabologia, Hospital Geral de Fortaleza (HGF), Fortaleza, CE, Brasil.,Departamento de Medicina, Universidade de Fortaleza (UNIFOR), Fortaleza, CE, Brasil
| | - Susan C Lindsey
- Centro de Doenças da Tiroide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brasil
| | - Lucas L Cunha
- Centro de Doenças da Tiroide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brasil
| | | | - André P Cortez
- Santa Casa de Misericórdia de Fortaleza, Fortaleza, CE, Brasil.,Hospital Geral Dr. César Cals, Fortaleza, CE, Brasil
| | | | - J Wilson M de Farias
- Departamento de Cirurgia de Cabeça e Pescoço, Hospital Geral de Fortaleza, Fortaleza, CE, Brasil.,Santa Casa de Misericórdia de Fortaleza, Fortaleza, CE, Brasil
| | - Sérgio B Lima
- Santa Casa de Misericórdia de Fortaleza, Fortaleza, CE, Brasil
| | - Luís A Albano Ferreira
- Hospital Universitário Walter Cantídio, Universidade Federal do Ceará (UFC), Fortaleza, CE, Brasil.,Hospital Infantil Albert Sabin, Fortaleza, CE, Brasil
| | | | - Cléber P Camacho
- Centro de Doenças da Tiroide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brasil
| | - Gilberto K Furuzawa
- Centro de Doenças da Tiroide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brasil
| | - Ilda S Kunii
- Centro de Doenças da Tiroide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brasil
| | - Magnus R Dias-da-Silva
- Centro de Doenças da Tiroide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brasil
| | - João R M Martins
- Centro de Doenças da Tiroide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brasil.,Divisão de Biologia Molecular, Departamento de Bioquímica, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brasil
| | - Rui M B Maciel
- Centro de Doenças da Tiroide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brasil.,Fleury Medicina e Saúde, São Paulo, SP, Brasil
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Genetic diagnosis of a Chinese multiple endocrine neoplasia type 2A family through whole genome sequencing. J Biosci 2018; 42:209-218. [PMID: 28569245 DOI: 10.1007/s12038-017-9686-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Approximately 98% of patients with multiple endocrine neoplasia type 2A (MEN 2A) have an identifiable RET mutation. Prophylactic or early total thyroidectomy or pheochromocytoma/parathyroid removal in patients can be preventative or curative and has become standard management. The general strategy for RET screening on family members at risk is to sequence the most commonly affected exons and, if negative, to extend sequencing to additional exons. However, different families with MEN 2A due to the same RET mutation often have significant variability in the clinical exhibition of disease and aggressiveness of the MTC, which implies additional genetic loci exsit beyond RET coding region. Whole genome sequencing (WGS) greatly expands the breadth of screening from genes associated with a particular disease to the whole genome and, potentially, all the information that the genome contains about diseases or traits. This is presumably due to additive effect of disease modifying factors. In this study, we performed WGS on a typical Chinese MEN 2A proband and identified the pathogenic RET p.C634R mutation. We also identified several neutral variants within RET and pheochromocytoma-related genes. Moreover, we found several interesting structural variants including genetic deletions (RSPO1, OVCH2 and AP3S1, etc.) and fusion transcripts (FSIP1-BAZ2A, etc.).
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Plaza-Menacho I. Structure and function of RET in multiple endocrine neoplasia type 2. Endocr Relat Cancer 2018; 25:T79-T90. [PMID: 29175871 DOI: 10.1530/erc-17-0354] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 11/23/2017] [Indexed: 12/31/2022]
Abstract
It has been twenty-five years since the discovery of oncogenic germline RET mutations as the cause of multiple endocrine neoplasia type 2 (MEN2). Intensive work over the last two and a half decades on RET genetics, signaling and cell biology has provided the current bases for the genotype-phenotype and functional correlations within this cancer syndrome. On the contrary, the structural and molecular basis for RET tyrosine kinase domain activation and oncogenic deregulation has remained largely elusive. Recent studies with a strong crystallographic and biochemical focus have started to elucidate key insights into such molecular and atomic details revealing unexpected and private mechanisms of actions and molecular determinants not previously envisioned. This review focuses on the structure and function of the RET receptor, and in particular, on what a more detailed view of the protein itself and what the current structural and molecular information tell us about the genotype and phenotype relationships in the cancer syndrome MEN2.
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Affiliation(s)
- Iván Plaza-Menacho
- KinasesProtein Phosphorylation and Cancer, Structural Biology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
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Rodrigues KC, Toledo RA, Coutinho FL, Nunes AB, Maciel RMB, Hoff AO, Tavares MC, Toledo SPA, Lourenço DM. Assessment of Depression, Anxiety, Quality of Life, and Coping in Long-Standing Multiple Endocrine Neoplasia Type 2 Patients. Thyroid 2017; 27:693-706. [PMID: 28276947 DOI: 10.1089/thy.2016.0148] [Citation(s) in RCA: 21] [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] [Indexed: 12/18/2022]
Abstract
BACKGROUND Data on psychological harm in multiple endocrine neoplasia type 2 (MEN2) are scarce. OBJECTIVES The aim of this study was to assess anxiety, depression, quality of life, and coping in long-standing MEN2 patients. PATIENTS AND METHODS Patients were 43 adults (age ≥18 years) with clinical and genetic diagnosis of MEN2 and long-term follow-up (10.6 ± 8.2 years; range 1-33 years). This was a cross-sectional study with qualitative and quantitative psychological assessment using semi-directed interviews and HADS, EORTC QLQ C30, and MINI-MAC scales. Adopting clinical criteria from 2015 ATA Guidelines on MEN2, biochemical cure (39%; 16/41), persistence/recurrence (61%; 25/41), and stable chronic disease (22/41) of medullary thyroid carcinoma (MTC) were scored. Pheochromocytoma affected 19 (44%) patients, with previous adrenalectomy in 17 of them. RESULTS Overall, anxiety (42%; mean score 11 ± 2.9; range 8-18; anxiety is defined as a score ≥8) and depression (26%; mean score 11 ± 3.8; range 8-20; depression is defined as a score ≥8) symptoms were frequent. Patients who transmitted RET mutations to a child had higher scores for weakness-discouragement/anxious preoccupation and lower scores for cognitive, emotional, and physical functioning (p < 0.05). Feelings of guilt were present in 35% of patients with mutation-positive children. Lower mean score values for depression and anxiety and higher scores for role, cognitive, and emotional functioning were noticed in 33 patients who were well-informed about their disease (p < 0.05). Fighting spirit was more frequently found in patients with multiple surgical procedures (p = 0.019) and controlled chronic adrenal insufficiency (p = 0.024). Patients with MEN2-related stress-inducing factors had lower scores for fighting spirit and cognitive functioning and higher scores for insomnia and dyspnea (p < 0.05). Eleven patients required sustained psychotherapeutic treatment. Mean global health status was relatively good in MEN2 cases (68.1 ± 22.3), and the cured group had higher physical functioning (p = 0.021). CONCLUSIONS Psychological distress is likely chronic in MEN2 patients. This study identified diverse MEN2-related factors (degree of information on disease, mutation-positive children, number of surgeries, comorbidities, stress-inducing factors, and cure) interfering positively or negatively with the results of the psychometrics scales. The active investigation of these factors and the applied psychological assessment protocol are useful to identify MEN2 patients requiring psychological assistance.
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Affiliation(s)
- Karine C Rodrigues
- 1 Endocrine Genetics Unit (LIM-25), Endocrinology Division, Hospital das Clínicas, University of São Paulo School of Medicine , São Paulo, Brazil
- 2 Endocrine Oncology Division, Institute of Cancer of the State of São Paulo, University of São Paulo School of Medicine , São Paulo, Brazil
| | - Rodrigo A Toledo
- 1 Endocrine Genetics Unit (LIM-25), Endocrinology Division, Hospital das Clínicas, University of São Paulo School of Medicine , São Paulo, Brazil
| | - Flavia L Coutinho
- 1 Endocrine Genetics Unit (LIM-25), Endocrinology Division, Hospital das Clínicas, University of São Paulo School of Medicine , São Paulo, Brazil
| | - Adriana B Nunes
- 3 Department of Endocrinology, Federal University of Rio Grande do Norte (UFRN) , Natal, Brazil
| | - Rui M B Maciel
- 4 Translational and Molecular Endocrinology Laboratory, Endocrinology Division, Federal University of Sao Paulo (UNIFESP) , São Paulo, Brazil
| | - Ana O Hoff
- 2 Endocrine Oncology Division, Institute of Cancer of the State of São Paulo, University of São Paulo School of Medicine , São Paulo, Brazil
| | - Marcos C Tavares
- 5 Head and Neck Surgery Division, Hospital das Clínicas, University of São Paulo School of Medicine , São Paulo, Brazil
| | - Sergio P A Toledo
- 1 Endocrine Genetics Unit (LIM-25), Endocrinology Division, Hospital das Clínicas, University of São Paulo School of Medicine , São Paulo, Brazil
- 4 Translational and Molecular Endocrinology Laboratory, Endocrinology Division, Federal University of Sao Paulo (UNIFESP) , São Paulo, Brazil
| | - Delmar M Lourenço
- 1 Endocrine Genetics Unit (LIM-25), Endocrinology Division, Hospital das Clínicas, University of São Paulo School of Medicine , São Paulo, Brazil
- 2 Endocrine Oncology Division, Institute of Cancer of the State of São Paulo, University of São Paulo School of Medicine , São Paulo, Brazil
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