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Ferreira LGA, Kizys MML, Gama GAC, Pachernegg S, Robevska G, Sinclair AH, Ayers KL, Dias-da-Silva MR. COUP-TFII regulates early bipotential gonad signaling and commitment to ovarian progenitors. Cell Biosci 2024; 14:3. [PMID: 38178246 PMCID: PMC10768475 DOI: 10.1186/s13578-023-01182-5] [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: 08/20/2023] [Accepted: 12/02/2023] [Indexed: 01/06/2024] Open
Abstract
BACKGROUND The absence of expression of the Y-chromosome linked testis-determining gene SRY in early supporting gonadal cells (ESGC) leads bipotential gonads into ovarian development. However, genetic variants in NR2F2, encoding three isoforms of the transcription factor COUP-TFII, represent a novel cause of SRY-negative 46,XX testicular/ovotesticular differences of sex development (T/OT-DSD). Thus, we hypothesized that COUP-TFII is part of the ovarian developmental network. COUP-TFII is known to be expressed in interstitial/mesenchymal cells giving rise to steroidogenic cells in fetal gonads, however its expression and function in ESGCs have yet to be explored. RESULTS By differentiating induced pluripotent stem cells into bipotential gonad-like cells in vitro and by analyzing single cell RNA-sequencing datasets of human fetal gonads, we identified that NR2F2 expression is highly upregulated during bipotential gonad development along with markers of bipotential state. NR2F2 expression was detected in early cell populations that precede the steroidogenic cell emergence and that retain a multipotent state in the undifferentiated gonad. The ESGCs differentiating into fetal Sertoli cells lost NR2F2 expression, whereas pre-granulosa cells remained NR2F2-positive. When examining the NR2F2 transcript variants individually, we demonstrated that the canonical isoform A, disrupted by frameshift variants previously reported in 46,XX T/OT-DSD patients, is nearly 1000-fold more highly expressed than other isoforms in bipotential gonad-like cells. To investigate the genetic network under COUP-TFII regulation in human gonadal cell context, we generated a NR2F2 knockout (KO) in the human granulosa-like cell line COV434 and studied NR2F2-KO COV434 cell transcriptome. NR2F2 ablation downregulated markers of ESGC and pre-granulosa cells. NR2F2-KO COV434 cells lost the enrichment for female-supporting gonadal progenitor and acquired gene signatures more similar to gonadal interstitial cells. CONCLUSIONS Our findings suggest that COUP-TFII has a role in maintaining a multipotent state necessary for commitment to the ovarian development. We propose that COUP-TFII regulates cell fate during gonad development and impairment of its function may disrupt the transcriptional plasticity of ESGCs. During early gonad development, disruption of ESGC plasticity may drive them into commitment to the testicular pathway, as observed in 46,XX OT-DSD patients with NR2F2 haploinsufficiency.
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Affiliation(s)
- Lucas G A Ferreira
- Laboratory of Molecular and Translational Endocrinology (LEMT), Endocrinology Division, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Murdoch Children's Research Institute, Melbourne, Australia
| | - Marina M L Kizys
- Laboratory of Molecular and Translational Endocrinology (LEMT), Endocrinology Division, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Gabriel A C Gama
- Laboratory of Molecular and Translational Endocrinology (LEMT), Endocrinology Division, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Svenja Pachernegg
- Murdoch Children's Research Institute, Melbourne, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, Australia
| | | | - Andrew H Sinclair
- Murdoch Children's Research Institute, Melbourne, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, Australia
| | - Katie L Ayers
- Murdoch Children's Research Institute, Melbourne, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, Australia
| | - Magnus R Dias-da-Silva
- Laboratory of Molecular and Translational Endocrinology (LEMT), Endocrinology Division, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil.
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Dos Santos LM, Ohe MN, Pallone SG, Nacaguma IO, Kunii IS, da Silva REC, Maeda SS, Vieira JGH, Lazaretti-Castro M. Levels of bioavailable, and free forms of 25(OH)D after supplementation with vitamin D 3 in primary hyperparathyroidism. Endocrine 2023; 80:183-190. [PMID: 36574149 DOI: 10.1007/s12020-022-03265-8] [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: 06/25/2022] [Accepted: 11/16/2022] [Indexed: 12/29/2022]
Abstract
The 25 hydroxyvitamin D [25(OH)D] is the major metabolite for ascertaining vitamin D status, which circulates bound to a specific carrier (vitamin D-binding protein - VDBP). A portion that circulates unbound vary according to the VDBP genotype. This study evaluates the behavior of different forms of 25(OH)D, before and after supplementation with 14,000 IU of vitamin D3, weekly for 12 weeks, in individuals with primary hyperparathyroidism and controls. Fifty-six patients with active primary hyperparathyroidism (PHPT) and 64 paired controls (CTRL), not taking vitamin D3 for the last three months, were enrolled. The genetic isotypes of VDBP were determined to calculate bioavailable and free 25(OH)D. A p < 0.05 was considered significant. There were no statistical differences in free, bioavailable, and total 25(OH)D levels between PHPT and CTRL groups at baseline. The distribution of VDBP haplotypes 1s/1s, 1f/1f, 1s/1f, 2/2, 1s/2, and 1f/2 was similar between groups. After supplementation, all three forms of 25(OH)D proportionally increased within each group, although the percentage increment was lower in the PHPT group (p < 0.05). Total 25(OH)D is better correlated with PTH in the PHPT group than bioavailable and free 25(OH)D (r = -0.41; p < 0.05). The concentrations of total, free, and bioavailable 25(OH)D were similar in both PHPT and CTRL groups, and all forms increased proportionally after supplementation, although this increment percentage was higher in the CTRL group, with a subsequent reduction of PTH and AP. Total 25(OH)D correlated better with PTH than other forms, suggesting no advantages in measuring free or bioavailable 25(OH)D in these situations.
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Affiliation(s)
- Lívia Marcela Dos Santos
- Department of Medicine, Endocrinology Unit, Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil.
| | - Monique Nakayama Ohe
- Department of Medicine, Endocrinology Unit, Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Sthefanie Giovanna Pallone
- Department of Medicine, Endocrinology Unit, Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Isabela Ohki Nacaguma
- Department of Medicine, Endocrinology Unit, Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Ilda Sizue Kunii
- Department of Medicine, Endocrinology Unit, Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Renata Elen Costa da Silva
- Department of Medicine, Endocrinology Unit, Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Sergio Setsuo Maeda
- Department of Medicine, Endocrinology Unit, Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | | | - Marise Lazaretti-Castro
- Department of Medicine, Endocrinology Unit, Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
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Santos LM, Ohe M, Pallone S, Nacaguma I, Kunii I, Silva R, Brandão CM, Vieira JG, Lazaretti-Castro M. Concentrations of total, bioavailable, and free 25OHD in individuals with and without primary hyperparathyroidism and their correlations to DXA and trabecular bone score. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2023; 67:242-250. [PMID: 36651703 PMCID: PMC10689035 DOI: 10.20945/2359-3997000000529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 08/08/2022] [Indexed: 01/19/2023]
Abstract
Objective This study aimed to investigate the association between 25OHD (total, bioavailable and free) with bone mass and microarchitecture among primary hyperparathyroidism (PHPT) patients and controls. Subjects and methods Sixty-four patients in the preoperative period of PHPT and 63 matched controls, who had not taken vitamin D in the last three months. To calculate the bioavailable and free 25OHD, the genetic variants of the vitamin D-binding protein (DBP) were determined. Bone mineral density (BMD) was determined by dual-energy X-ray absorptiometry (DXA). The distributions of total, bioavailable and free 25OHD and their correlation with TBS and DXA were evaluated. Results PHPT showed BMD and TBS values lower than CTRL in all locations (p < 0.05). There were no statistical differences in the levels of free, bioavailable and total 25OHD between the PHPT and CTRL groups [mean, min-max: 3.4 (1.4-8.6) vs. 3.1 (1.0- 9.8) pg/mL, 1.51 (0.43-3.58) vs. 1.41 (0.38-3.48) ng/mL, 22.6 (11.0-39.9) vs. 20.6 (8.9-35.3) ng/dL, respectively; (p > 0.05). The distribution of DBP haplotypes was similar between groups. DXA showed no correlation with any form of 25OHD in both groups. TBS presented a weak correlation with the total 25OHD in PHPT (r = 0.28; p = 0.02) and a moderate correlation with the total, free and bioavailable 25OHD in CTRL (r = 0.42; r = 0.42; r = 0.43; respectively, p < 0.01). Conclusion The concentrations of total, free and bioavailable 25OHD were similar in both the PHPT and control groups. 25OHD concentrations correlated positively with TBS and not with DXA, especially in controls, suggesting that this method may be more sensitive to assessing the consequences of vitamin D deficiency on bone quality in individuals without PHPT.
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Affiliation(s)
- Lívia Marcela Santos
- Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brasil,
| | - Monique Ohe
- Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brasil
| | - Sthefanie Pallone
- Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brasil
| | - Isabela Nacaguma
- Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brasil
| | - Ilda Kunii
- Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brasil
| | - Renata Silva
- Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brasil
| | - Cynthia Maria Brandão
- Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brasil
| | - José Gilberto Vieira
- Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brasil
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Profile of MicroRNAs Associated with Death Due to Disease Progression in Metastatic Papillary Thyroid Carcinoma Patients. Cancers (Basel) 2023; 15:cancers15030869. [PMID: 36765828 PMCID: PMC9913691 DOI: 10.3390/cancers15030869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/25/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023] Open
Abstract
Papillary thyroid carcinoma (PTC) is the most common neoplasm of the endocrine system and has an excellent long-term prognosis, with low rates of distant metastatic disease. Although infrequent, there are cases of deaths directly related to PTC, especially in patients with metastatic disease, and the factors that could be associated with this unfavorable outcome remain a major challenge in clinical practice. Recently, research into genetic factors associated with PTC has gained ground, especially mutations in the TERT promoter and BRAF gene. However, the role of microRNAs remains poorly studied, especially in those patients who have an unfavorable outcome at follow-up. This paper aims to evaluate molecular markers related to the different pathological processes of PTC, as well as the histological characteristics of the neoplasm, and to compare this profile with prognosis and death from the disease using an analysis of patients treated for metastatic disease in a single tertiary cancer center. Evaluation of microRNA expression in paraffin-embedded tumor specimens was carried out by quantitative PCR using the TaqMan® Low Density Array (TLDA) system. Metastatic patients who died from progression of PTC had higher expressions of miR-101-3p, miR-17-5p, and miR-191-5p when compared to patients with stable metastatic disease. These findings are of great importance but should be considered as preliminary because of the small sample.
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Durães C, Pereira Gomes C, Costa JL, Quagliata L. Demystifying the Discussion of Sequencing Panel Size in Oncology Genetic Testing. EUROPEAN MEDICAL JOURNAL 2022. [DOI: 10.33590/emj/22c9259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Clinical laboratories worldwide are implementing next-generation sequencing (NGS) to identify cancer genomic variants and ultimately improve patient outcomes. The ability to massively sequence the entire genome or exome of tumour cells has been critical to elucidating many complex biological questions. However, the depth of information obtained by these methods is strenuous to process in the clinical setting, making them currently unfeasible for broader adoption. Instead, targeted sequencing, usually on a selection of clinically relevant genes, represents the predominant approach that best balances accurate identification of genomic variants with high sensitivity and a good cost-effectiveness ratio. The information obtained from targeted sequencing can support diagnostic classification, guide therapeutic decisions, and provide prognostic insights. The use of targeted gene panels expedites sample processing, including data analysis, results interpretation, and medical reports generation, directly affecting patient management. The key decision factors for selecting sequencing methods and panel size in routine testing should include diagnostic yield and clinical utility, sample availability, and processing turnaround time.
Profiling by default all patients with late-stage cancer with large panels is not affordable for most healthcare systems and does not provide substantial clinical benefit at present. Balancing between understanding cancer biology, including patients in clinical trials, maximising testing, and ensuring a sustainable financial burden for society requires thorough consideration. This review provides an overview of the advantages and drawbacks of different sizes NGS panels for tumour molecular profiling and their clinical applicability.
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Affiliation(s)
- Cecília Durães
- Clinical Next-Generation Sequencing Division, Genetic Sciences Group, Thermo Fisher Scientific, Carlsbad, California, USA
| | | | - Jose Luis Costa
- Clinical Next-Generation Sequencing Division, Genetic Sciences Group, Thermo Fisher Scientific, Carlsbad, California, USA
| | - Luca Quagliata
- Clinical Next-Generation Sequencing Division, Genetic Sciences Group, Thermo Fisher Scientific, Carlsbad, California, USA
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Dolinar A, Grubelnik G, Srebotnik-Kirbiš I, Strojan Fležar M, Žlajpah M. Optimization of pre-analytical and analytical steps for DNA and RNA analysis of fresh cytology samples. Cancer Med 2022; 11:4021-4032. [PMID: 35403378 DOI: 10.1002/cam4.4728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 02/16/2022] [Accepted: 03/16/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Different cytology preparations can be used for molecular diagnostics, however the influence of pre-analytical and analytical steps on the results are not yet well defined. We aimed to determine optimal steps for efficient extraction of DNA and RNA from fresh cells for molecular diagnostics. METHODS MCF7 and FaDu human cell lines, were used as a model to determine fresh cells storage conditions (temperature: 25°C, 4°C, -20°C, -80°C; duration: 0 h, 4 h, 12 h, 24 h, 48 h) and optimal nucleic acids extraction method. Besides, the minimal number of total cells and minimal percentage of mutated cells needed for successful extraction of nucleic acids and subsequent determination of present mutation were evaluated. RESULTS Extraction of nucleic acids using spin columns yielded the highest quantity and quality of nucleic acids. Isolation of nucleic acids was feasible in all storage conditions, however higher temperature and longer duration of fresh cells storage were associated with lower quality of isolated nucleic acids and similar quantification cycle of housekeeping genes. Successful molecular testing was feasible with least 104 cells, while specific mutation was detected in as low as 5% of mutated cells. CONCLUSIONS Our cell line model, mimicking fresh cytology samples, showed that quantity of extracted either DNA or RNA declined with higher temperatures and longer duration of storage but regardless of the storage conditions, we successfully detected both housekeeping genes and mutated gene using qPCR.
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Affiliation(s)
- Ana Dolinar
- Department of molecular genetics, Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Gašper Grubelnik
- Department of molecular genetics, Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Irena Srebotnik-Kirbiš
- Department of cytopathology, Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Margareta Strojan Fležar
- Department of cytopathology, Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Margareta Žlajpah
- Department of molecular genetics, Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
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Domingues GAB, Kizys MML, Janovsky CCPS, de Barros Maciel RM, Dias-da-Silva MR, Martins JRM, Camacho CP, Cunha LL. The impact of the genetic background in a patient with papillary thyroid cancer and familial adenomatous polyposis. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2022; 66:112-117. [PMID: 35263052 PMCID: PMC9991026 DOI: 10.20945/2359-3997000000439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Thyroid cancer is the most common endocrine malignancy, and papillary thyroid carcinoma (PTC) is the main subtype. The cribriform morular variant is a histological phenotype of PTC characterized by its relationship with familial adenomatous polyposis (FAP). Description of the case: We report the genetic assessment of a 20-year-old female patient diagnosed with a cribriform-morular variant of PTC and FAP. We aimed to assess the genetic background of the reported patient, looking for variants that would help us explain the predisposition to tumorigenesis. Genomic DNA was extracted from peripheral blood lymphocytes, and whole exome sequencing was performed. We applied an overrepresentation and gene-set enrichment analysis to look for an accumulation of effects of variants in multiple genes at the genome. We found an overrepresentation of single nucleotide variants (SNVs) in extracellular matrix interactions and cell adhesion genes. Underrepresentation of SNVs in genes related to the regulation of autophagy and cell cycle control was also observed. We hypothesize that the package of alterations of our patient may help to explain why she presented colonic manifestations and thyroid cancer. Our findings suggest that multiple variants with minor impact, when considered together, may be helpful to characterize one particular clinical condition.
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Affiliation(s)
| | - Marina Malta Letro Kizys
- Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil
| | | | - Rui Monteiro de Barros Maciel
- Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil
| | - Magnus Régios Dias-da-Silva
- Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil
| | - João Roberto Maciel Martins
- Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil
| | - Cleber Pinto Camacho
- Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil.,Laboratório de Inovação Molecular e Biotecnologia, Divisão de Pós-Graduação Médica, Universidade Nove de Julho, São Paulo, SP, Brasil
| | - Lucas Leite Cunha
- Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil,
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Barbosa LG, Siviero-Miachon AA, Souza MA, Spinola-Castro AM. Recognition of the Y chromosome in Turner syndrome using peripheral blood or oral mucosa tissue. Ann Pediatr Endocrinol Metab 2021; 26:272-277. [PMID: 34634867 PMCID: PMC8749017 DOI: 10.6065/apem.2142026.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 05/31/2021] [Indexed: 11/20/2022] Open
Abstract
PURPOSE Turner syndrome is defined as total or partial loss of the second sex chromosome in a phenotypically female patient. Due to the possibility of hidden mosaicism of fragments of the Y chromosome and development of gonadoblastoma, we evaluated the presence of such fragments in 2 tissues with different embryonic origins, peripheral blood lymphocytes (mesoderm), and oral mucosal cells (ectoderm) using multiplex polymerase chain reaction. METHODS DNA samples were collected from 109 patients, and primers for the SRY, TSPY, and AMELX genes were used. RESULTS We found 14 patients (12.8%) with positive molecular markers for the Y chromosome. The study of tissues of different embryological origin showed the same degree of agreement, sensitivity, and specificity. CONCLUSION Oral mucosa cells have a simpler method of collection that is less invasive and requires less time for DNA extraction at a lower cost.
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Affiliation(s)
- Lene Garcia Barbosa
- Division of Pediatric Endocrinology, Department of Pediatrics in Federal University of Sao Paulo (UNIFESP-EPM), Sao Paulo, Brazil,Address for correspondence: Lene Garcia Barbosa Division of Pediatric Endocrinology, Department of Pediatrics in Federal University of Sao Paulo (UNIFESPEPM), Sao Paulo, Brazil,340 José de Magalhães Street, São Paulo 04026- 090, Brazil
| | | | | | - Angela Maria Spinola-Castro
- Division of Pediatric Endocrinology, Department of Pediatrics in Federal University of Sao Paulo (UNIFESP-EPM), Sao Paulo, Brazil
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Dotto RP, de Santana LS, Lindsey SC, Caetano LA, Franco LF, Moisés RCMS, Sa JR, Nishiura JL, Teles MG, Heilberg IP, Dias-da-Silva MR, Giuffrida FMA, Reis AF. Searching for mutations in the HNF1B gene in a Brazilian cohort with renal cysts and hyperglycemia. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2019; 63:250-257. [PMID: 31066763 PMCID: PMC10522195 DOI: 10.20945/2359-3997000000138] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 02/13/2019] [Indexed: 01/27/2023]
Abstract
OBJECTIVE To verify the presence of variants in HNF1B in a sample of the Brazilian population selected according to the presence of renal cysts associated with hyperglycemia. SUBJECTS AND METHODS We evaluated 28 unrelated patients with clinical suspicion of HNF1B mutation because of the concomitant presence of diabetes mellitus (DM) or prediabetes and renal cysts. Genotyping was accomplished using Sanger sequencing or multiplex ligation-dependent probe amplification (MLPA). In positive cases, available relatives were recruited. RESULTS We found two patients with HNF1B mutations. The first presented the variant p.Pro328Leufs*48(c.983delC) and had DM, renal cysts, and hypomagnesemia. The second presented a heterozygous whole gene deletion in HNF1B, DM, renal cysts, body and tail pancreatic agenesis, and hypomagnesemia; this alteration was also found in his two siblings and his father. CONCLUSION The recruitment of suspected cases of HNF1B gene mutations in Brazilians due to hyperglycemia and renal cysts presents two positive cases. Our cases contribute to the annotation of clinical and biochemical phenotypes of this rare form of maturity-onset diabetes of the young (MODY).
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Affiliation(s)
- Renata P. Dotto
- Universidade Federal de São PauloDisciplina de EndocrinologiaDepartamento de MedicinaUniversidade Federal de São PauloSão PauloSPBrasilDisciplina de Endocrinologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - Lucas Santos de Santana
- Universidade de São PauloUnidade de Endocrinologia Genética/LIM25Faculdade de MedicinaUniversidade de São PauloSão PauloSPBrasilGrupo de Diabetes Monogênico, Unidade de Endocrinologia Genética/LIM25, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, SP, Brasil
| | - Susan C. Lindsey
- Universidade Federal de São PauloDisciplina de EndocrinologiaDepartamento de MedicinaUniversidade Federal de São PauloSão PauloSPBrasilDisciplina de Endocrinologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - Lilian Araújo Caetano
- Universidade de São PauloUnidade de Endocrinologia Genética/LIM25Faculdade de MedicinaUniversidade de São PauloSão PauloSPBrasilGrupo de Diabetes Monogênico, Unidade de Endocrinologia Genética/LIM25, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, SP, Brasil
| | - Luciana F. Franco
- Universidade Federal de São PauloDisciplina de EndocrinologiaDepartamento de MedicinaUniversidade Federal de São PauloSão PauloSPBrasilDisciplina de Endocrinologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - Regina Célia M. S. Moisés
- Universidade Federal de São PauloDisciplina de EndocrinologiaDepartamento de MedicinaUniversidade Federal de São PauloSão PauloSPBrasilDisciplina de Endocrinologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - João R. Sa
- Universidade Federal de São PauloDisciplina de EndocrinologiaDepartamento de MedicinaUniversidade Federal de São PauloSão PauloSPBrasilDisciplina de Endocrinologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - José Luiz Nishiura
- Universidade Federal de São PauloDepartamento de MedicinaUniversidade Federal de São PauloSão PauloSPBrasilDisciplina de Nefrologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - Milena Gurgel Teles
- Universidade de São PauloUnidade de Endocrinologia Genética/LIM25Faculdade de MedicinaUniversidade de São PauloSão PauloSPBrasilGrupo de Diabetes Monogênico, Unidade de Endocrinologia Genética/LIM25, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, SP, Brasil
| | - Ita P. Heilberg
- Universidade Federal de São PauloDepartamento de MedicinaUniversidade Federal de São PauloSão PauloSPBrasilDisciplina de Nefrologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - Magnus R. Dias-da-Silva
- Universidade Federal de São PauloDisciplina de EndocrinologiaDepartamento de MedicinaUniversidade Federal de São PauloSão PauloSPBrasilDisciplina de Endocrinologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - Fernando M. A. Giuffrida
- Universidade Federal de São PauloDisciplina de EndocrinologiaDepartamento de MedicinaUniversidade Federal de São PauloSão PauloSPBrasilDisciplina de Endocrinologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
- Universidade do Estado da BahiaDepartamento de Ciências da VidaUniversidade do Estado da BahiaSalvadorBABrasilDepartamento de Ciências da Vida, Universidade do Estado da Bahia (UNEB), Salvador, BA, Brasil
| | - André F. Reis
- Universidade Federal de São PauloDisciplina de EndocrinologiaDepartamento de MedicinaUniversidade Federal de São PauloSão PauloSPBrasilDisciplina de Endocrinologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
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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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11
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Weiler FG, Peterson P, Costa-Carvalho BT, de Barros Dorna M, Correia-Deur JE, Sader SL, Espíndola-Antunes D, Guerra-Junior G, Dias-da-Silva MR, Lazaretti-Castro M. The heterogeneity of autoimmune polyendocrine syndrome type 1: Clinical features, new mutations and cytokine autoantibodies in a Brazilian cohort from tertiary care centers. Clin Immunol 2018; 197:231-238. [PMID: 30287219 DOI: 10.1016/j.clim.2018.09.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 09/16/2018] [Accepted: 09/26/2018] [Indexed: 12/31/2022]
Abstract
Autoimmune polyendocrine syndrome type 1 (APS1) is characterized by multiorgan autoimmunity. We aim at characterizing a multi-center Brazilian cohort of APS1 patients by clinical evaluation, searching mutation in the AIRE gene, measuring serum autoantibodies, and investigating correlations between findings. We recruited patients based on the clinical criteria and tested them for AIRE mutations, antibodies against interferon type I and interleukins 17A, 17F and 22. We identified 12 unrelated families (13 patients) with typical signs of APS1 in the proband, and the screening of relatives recognized an asymptomatic child. Candidiasis was present in all cases, and 19 other manifestations were observed. All patients carried one of 10 different mutations in AIRE, being 3 new ones, and were positive for anti-interferon type I serum antibody. Anti-interleukin-17A levels inversely correlated with the number of manifestations in each patient. This negative correlation may suggest a protective effect of anti-interleukin-17A with a potential therapeutic application.
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Affiliation(s)
- Fernanda Guimarães Weiler
- Division of Endocrinology, Department of Medicine, Universidade Federal de Sao Paulo, Sao Paulo, Sao Paulo, Brazil
| | - Pärt Peterson
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | | | - Mayra de Barros Dorna
- Allergy and immunology unit, Department of Pediatrics, Universidade de Sao Paulo, Sao Paulo, Sao Paulo, Brazil
| | | | - Soraya Lopes Sader
- Department of Pediatrics, Ribeirao Preto Medical School, Universidade de Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | | | - Gil Guerra-Junior
- Department of Pediatrics, Universidade Estadual de Campinas, Campinas, Sao Paulo, Brazil
| | - Magnus Régios Dias-da-Silva
- Division of Endocrinology, Department of Medicine, Universidade Federal de Sao Paulo, Sao Paulo, Sao Paulo, Brazil.
| | - Marise Lazaretti-Castro
- Division of Endocrinology, Department of Medicine, Universidade Federal de Sao Paulo, Sao Paulo, Sao Paulo, Brazil
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12
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Correa-Silva SR, Fausto JDS, Kizys MML, Filipelli R, Marco Antonio DS, Oku AY, Furuzawa GK, Orchard EVH, Costa-Barbosa FA, Mitne-Neto M, Dias-da-Silva MR. A novel GNRHR gene mutation causing congenital hypogonadotrophic hypogonadism in a Brazilian kindred. J Neuroendocrinol 2018; 30:e12658. [PMID: 30415482 DOI: 10.1111/jne.12658] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 10/02/2018] [Accepted: 11/05/2018] [Indexed: 01/07/2023]
Abstract
Congenital hypogonadotrophic hypogonadism (CHH) is a challenging inherited endocrine disorder characterised by absent or incomplete pubertal development and infertility as a result of the low action/secretion of the hypothalamic gonadotrophin-releasing hormone (GnRH). Given a growing list of gene mutations accounting for CHH, the application of massively parallel sequencing comprises an excellent molecular diagnostic approach because it enables the simultaneous evaluation of many genes. The present study proposes the use of whole exome sequencing (WES) to identify causative and modifying mutations based on a phenotype-genotype CHH analysis using an in-house exome pipeline. Based on 44 known genes related to CHH in humans, we were able to identify a novel homozygous gonadotrophin-releasing hormone receptor (GNRHR) p.Thr269Met mutant, which segregates with the CHH kindred and was predicted to be deleterious by in silico analysis. A functional study measuring intracellular inositol phosphate (IP) when stimulated with GnRH on COS-7 cells confirmed that the p.Thr269Met GnRHR mutant performed greatly diminished IP accumulation relative to the transfected wild-type GnRHR. Additionally, the proband carries three heterozygous variants in CCDC141 and one homozygous in SEMA3A gene, although their effects with respect to modifying the phenotype are uncertain. Because they do not segregate with reproductive phenotype in family members, we advocate they do not contribute to CHH oligogenicity. WES proved to be useful for CHH molecular diagnosis and reinforced its benefit with respect to identifying heterogeneous genetic disorders. Our findings expand the GnRHR mutation spectrum and phenotype-genotype correlation in CHH.
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Affiliation(s)
- Silvia Regina Correa-Silva
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Jessica da Silva Fausto
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Marina Malta Letro Kizys
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Rafael Filipelli
- Molecular Biology and Lysosomal Disease Diagnosis Laboratory, Department of Biophysics, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Andre Yuji Oku
- Research and Development, Fleury Group, São Paulo, Brazil
| | - Gilberto Koiti Furuzawa
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Flavia Amanda Costa-Barbosa
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Research and Development, Fleury Group, São Paulo, Brazil
| | - Miguel Mitne-Neto
- Research and Development, Fleury Group, São Paulo, Brazil
- Human Genome and Stem Cell Research Center (HUG-CELL), Biosciences Institute, University of São Paulo (USP), São Paulo, Brazil
| | - Magnus R Dias-da-Silva
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
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13
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Liu D, Zhang X, Zhou H, Lin X, Shi D, Shen S, Tian Y, Du B, Zhang H, Wang H, Wang Y, Zhang C. Multiplex Cell-Free DNA Reference Materials for Quality Control of Next-Generation Sequencing-Based In Vitro Diagnostic Tests of Colorectal Cancer Tolerance. J Cancer 2018; 9:3812-3823. [PMID: 30405853 PMCID: PMC6216012 DOI: 10.7150/jca.26816] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Accepted: 08/07/2018] [Indexed: 12/19/2022] Open
Abstract
Background: Liquid biopsies based on next-generation sequencing (NGS) assays are confronted with more opportunities and challenges. Widespread clinical implementation of NGS-based cancer in vitro diagnostic tests (IVDs) highlighted the urgency to establish reference materials (RMs) which could provide full control of the process from nucleic acid extraction to test report generation. Quality control based on cell-free DNA (cfDNA) RMs is especially important for liquid biopsies. Methods: Here, we used genomic DNA from thirteen cell lines to establish four negative cfDNA RMs (N1-N4) and four multiplex cfDNA RMs (L1-L4) at serial allelic frequencies ranging from approximately 2% to 0.1%. All the cfDNA RMs were quantified and validated via both droplet digital polymerase chain reaction (ddPCR) and NGS. These RMs were distributed to eight domestic manufacturers to collaboratively evaluate the performance of several domestic NGS-based cancer IVDs covering four major NGS platforms (NextSeq, HiSeq, Ion Proton, and BGISEQ). Results: Each multiplex RM has eleven colorectal cancer-related mutations, including six KRAS mutations (G12S, G12C, G12D, G12A, G12V, and G13D), three NRAS mutations (G12D, Q61R, and Q61K), one PIK3CA mutation (H1047R), and one BRAF mutation (V600E). Each mutation in the cfDNA RMs was quantified and validated via both ddPCR and NGS, showing the good relevance of mutant allelic frequency. These RMs were distributed to eight domestic manufacturers for collaborative evaluation. All eight manufacturers provided similar results by domestic NGS-based cancer IVDs, except for manufacturer #5. The coefficient of variation (CV) was increased with decreasing mutant allelic frequency, and poor repetition occurred when the allelic frequency was lower than 0.5%. Conclusions: These results indicated that these cfDNA RMs would be pivotal for NGS-based cancer IVDs, especially for liquid biopsies of colorectal cancer-related mutations and would guide the further development of RMs covering more onco-related mutations.
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Affiliation(s)
- Donglai Liu
- Division II of In Vitro Diagnostics for Infectious Diseases, Institute for In Vitro Diagnostics Control, National Institutes for Food and Drug Control, Beijing, China
| | - Xinyuan Zhang
- GeneCast Precision Medicine Technology Institute, Beijing, China
| | - Haiwei Zhou
- Division II of In Vitro Diagnostics for Infectious Diseases, Institute for In Vitro Diagnostics Control, National Institutes for Food and Drug Control, Beijing, China
| | - Xiaojing Lin
- GeneCast Precision Medicine Technology Institute, Beijing, China
| | - Dawei Shi
- Division II of In Vitro Diagnostics for Infectious Diseases, Institute for In Vitro Diagnostics Control, National Institutes for Food and Drug Control, Beijing, China
| | - Shu Shen
- Division II of In Vitro Diagnostics for Infectious Diseases, Institute for In Vitro Diagnostics Control, National Institutes for Food and Drug Control, Beijing, China
| | - Yabin Tian
- Division II of In Vitro Diagnostics for Infectious Diseases, Institute for In Vitro Diagnostics Control, National Institutes for Food and Drug Control, Beijing, China
| | - Bo Du
- GeneCast Precision Medicine Technology Institute, Beijing, China
| | - Henghui Zhang
- GeneCast Precision Medicine Technology Institute, Beijing, China
| | - Haibo Wang
- GeneCast Precision Medicine Technology Institute, Beijing, China
| | - Youchun Wang
- Division II of In Vitro Diagnostics for Infectious Diseases, Institute for In Vitro Diagnostics Control, National Institutes for Food and Drug Control, Beijing, China
| | - Chuntao Zhang
- Division II of In Vitro Diagnostics for Infectious Diseases, Institute for In Vitro Diagnostics Control, National Institutes for Food and Drug Control, Beijing, China
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14
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Kizys MML, Louzada RA, Mitne-Neto M, Jara JR, Furuzawa GK, de Carvalho DP, Dias-da-Silva MR, Nesi-França S, Dupuy C, Maciel RMB. DUOX2 Mutations Are Associated With Congenital Hypothyroidism With Ectopic Thyroid Gland. J Clin Endocrinol Metab 2017; 102:4060-4071. [PMID: 28666341 DOI: 10.1210/jc.2017-00832] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 06/22/2017] [Indexed: 12/11/2022]
Abstract
CONTEXT Thyroid dysgenesis (TD) is the leading cause of congenital hypothyroidism (CH). The etiology of TD remains unknown in ∼90% of cases, the most common form being thyroid ectopia (TE) (48% to 61%). OBJECTIVE To search for candidate genes in hypothyroid children with TE. DESIGN, SETTING, AND PARTICIPANTS We followed a cohort of 268 children with TD and performed whole-exome sequencing (WES) in three children with CH with TE (CHTE) and compared them with 18 thyroid-healthy controls. We then screened an additional 41 children with CHTE by Sanger sequencing and correlated the WES and Sanger molecular findings with in vitro functional analysis. MAIN OUTCOME MEASURES Genotyping, mutation prediction analysis, and in vitro functional analysis. RESULTS We identified seven variants in the DUOX2 gene, namely G201E, L264CfsX57, P609S, M650T, E810X, M822V, and E1017G, and eight known variations. All children carrying DUOX2 variations had high thyroid-stimulating hormone levels at neonatal diagnosis. All mutations were localized in the N-terminal segment, and three of them led to effects on cell surface targeting and reactive oxygen species generation. The DUOX2 mutants also altered the interaction with the maturation factor DUOXA2 and the formation of a stable DUOX2/DUOXA2 complex at the cell surface, thereby impairing functional enzymatic activity. We observed no mutations in the classic genes related to TD or in the DUOX1 gene. CONCLUSION Our findings suggest that, in addition to thyroid hormonogenesis, the DUOX2 N-terminal domain may play a role in thyroid development.
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Affiliation(s)
- Marina M L Kizys
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Universidade Federal de São Paulo, São Paulo 04039-032, Brazil
| | - Ruy A Louzada
- UMR 8200 CNRS, Villejuif, 94800, France
- Institut Gustave Roussy, Villejuif, 94800, France
- Université Paris-Saclay, Orsay, 91405, France
- Laboratory of Endocrine Physiology Doris Rosenthal, Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Miguel Mitne-Neto
- Fleury Group, São Paulo 04344-070, Brazil
- Human Genome and Stem Cell Research Center, Biosciences Institute, Universidade de São Paulo, São Paulo 05508-900, Brazil
| | - Jessica R Jara
- Department of Pediatrics, Universidade Federal do Paraná, Curitiba 80060-240, Brazil
| | - Gilberto K Furuzawa
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Universidade Federal de São Paulo, São Paulo 04039-032, Brazil
| | - Denise P de Carvalho
- Laboratory of Endocrine Physiology Doris Rosenthal, Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Magnus R Dias-da-Silva
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Universidade Federal de São Paulo, São Paulo 04039-032, Brazil
| | - Suzana Nesi-França
- Department of Pediatrics, Universidade Federal do Paraná, Curitiba 80060-240, Brazil
| | - Corinne Dupuy
- UMR 8200 CNRS, Villejuif, 94800, France
- Institut Gustave Roussy, Villejuif, 94800, France
- Université Paris-Saclay, Orsay, 91405, France
| | - Rui M B Maciel
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Universidade Federal de São Paulo, São Paulo 04039-032, Brazil
- Fleury Group, São Paulo 04344-070, Brazil
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15
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Comparison of Next-Generation Sequencing Panels and Platforms for Detection and Verification of Somatic Tumor Variants for Clinical Diagnostics. J Mol Diagn 2017; 18:842-850. [PMID: 27770852 DOI: 10.1016/j.jmoldx.2016.06.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 05/07/2016] [Accepted: 06/03/2016] [Indexed: 11/22/2022] Open
Abstract
Use of next-generation sequencing to detect somatic variants in DNA extracted from formalin-fixed, paraffin-embedded tumor tissues poses a challenge for clinical molecular diagnostic laboratories because of variable DNA quality and quantity, and the potential to detect low allele frequency somatic variants difficult to verify by non-next-generation sequencing methods. We evaluated somatic variant detection performance of the MiSeq and Ion Proton benchtop sequencers using two commercially available panels, the TruSeq Amplicon Cancer Panel and the AmpliSeq Cancer Hotspot Panel Version 2. Both the MiSeq-TruSeq Amplicon Cancer Panel and Ion Proton-AmpliSeq Cancer Hotspot Panel Version 2 were comparable in terms of detection of somatic variants and allele frequency determination using DNA extracted from tumor tissue. Concordance was 100% between the panels for detection of somatic variants in genomic regions tested by both panels, including 27 variants present at low somatic allele frequency (<15%). Use of both the MiSeq and Ion Proton platforms in a combined workflow enabled detection of potentially actionable variants with importance for patient diagnosis, prognosis, or treatment in 49% (305/621) of cases. Overall, a combined workflow using both platforms enabled successful molecular profiling of 96% (621/644) of tumor samples, and provided an approach for verification of somatic variants not amenable to verification by Sanger sequencing (<15% variant allele frequency).
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16
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Cunha LL, Lindsey SC, França MIC, Sarika L, Papathoma A, Kunii IS, Cerutti JM, Dias-da-Silva MR, Alevizaki M, Maciel RMB. Evidence for the founder effect of RET533 as the common Greek and Brazilian ancestor spreading multiple endocrine neoplasia 2A. Eur J Endocrinol 2017; 176:515-519. [PMID: 28137737 DOI: 10.1530/eje-16-1021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 01/30/2017] [Indexed: 01/04/2023]
Abstract
OBJECTIVES About one-quarter of patients with medullary thyroid cancer (MTC) have inherited disease due to mutations in the RET gene. A rare mutation in exon 8 (G533C) of RET, previously described in a large Brazilian family with MEN2A, also appeared to be clustering in Greece, whereas it was rarely reported in other ethnic groups. The aim of this study was to identify a possible common ancestry between these carriers. PATIENTS AND METHODS Twelve RET G533C mutation carriers, four randomly selected from the Brazilian cohort and eight from apparently unrelated Greek families, were studied for a possible common ancestral origin. RET flanking microsatellite markers at chromosome 10q (D10S197, D10S196, D10S1652 and D10S537) were used. RESULTS Genomic DNA analysis using these markers showed that many of these apparently unrelated individuals shared a common haplotype indicating a common ancestral origin. CONCLUSION Our data suggest that Brazilian and Greek patients with MTC carrying the G533C mutation in exon 8 of RET gene originate from a common ancestor. Due to historical reasons, we speculate that the more plausible explanation for the origin of this mutation is in Greece.
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Affiliation(s)
| | | | | | - Leda Sarika
- Endocrine UnitDepartment of Medical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Alexandra Papathoma
- Endocrine UnitDepartment of Medical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Janete M Cerutti
- Morphology and GeneticsEscola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Maria Alevizaki
- Endocrine UnitDepartment of Medical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
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17
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Siviero-Miachon AA, Kizys MML, Ribeiro MM, Garcia FE, Spinola-Castro AM, Dias da Silva MR. Cosegregation of a novel mutation in the sixth transmembrane segment of the luteinizing/choriogonadotropin hormone receptor with two Brazilian siblings with severe testotoxicosis. Endocr Res 2017; 42:117-124. [PMID: 27532428 DOI: 10.1080/07435800.2016.1217005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE Testotoxicosis is an autosomal dominant form of gonadotropin-independent precocious puberty caused by heterozygous constitutively activating mutations of the luteinizing hormone/choriogonadotropin receptor (LHCGR) gene. The aim of this study was to describe two Brazilian siblings with testotoxicosis, to confirm the molecular diagnosis, and to perform an in silico analysis of a novel mutation in the hot spot of the LHCGR gene. MATERIALS AND METHODS Molecular analysis of the mutation on the LHCGR gene was performed by direct Sanger sequencing, followed by an in silico analysis using HOPE bioinformatics tool to predict a functional defect of the mutant. RESULTS Both patients presented with gonadotropin-independent precocious puberty before the age of four years. Genetic analysis revealed a novel non-maternally inherited p.Asp578Val mutation of the LHCGR gene. An in silico analysis showed that the p.Asp578Val mutation disturbed amino acid physicochemical features regarding its size, charge, and hydrophobicity value. CONCLUSIONS Clinical and hormonal profile of the siblings here evaluated was not different while compared to those patients previously described. An in silico mutation analysis reinforced the causative role of recurrent activating mutations in the intracellular loop and transmembrane helices of the LHCGR. The segregation of this mutation with the offsprings' phenotype indicated that it is causative.
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Affiliation(s)
- Adriana A Siviero-Miachon
- a Division of Pediatric Endocrinology, Department of Pediatrics , Federal University of Sao Paulo - UNIFESP/EPM , Sao Paulo , Brazil
| | - Marina M L Kizys
- b Laboratory of Molecular and Translational Endocrinology, Department of Medicine , Federal University of Sao Paulo , Sao Paulo , Brazil
| | - Manuela M Ribeiro
- a Division of Pediatric Endocrinology, Department of Pediatrics , Federal University of Sao Paulo - UNIFESP/EPM , Sao Paulo , Brazil
| | - Fabiola Esgrignoli Garcia
- a Division of Pediatric Endocrinology, Department of Pediatrics , Federal University of Sao Paulo - UNIFESP/EPM , Sao Paulo , Brazil
| | - Angela M Spinola-Castro
- a Division of Pediatric Endocrinology, Department of Pediatrics , Federal University of Sao Paulo - UNIFESP/EPM , Sao Paulo , Brazil
| | - Magnus R Dias da Silva
- b Laboratory of Molecular and Translational Endocrinology, Department of Medicine , Federal University of Sao Paulo , Sao Paulo , Brazil
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18
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Paninka RM, Carlos-Lima E, Lindsey SC, Kunii IS, Dias-da-Silva MR, Arcisio-Miranda M. Down-regulation of Kir2.6 channel by c-termini mutation D252N and its association with the susceptibility to Thyrotoxic Periodic Paralysis. Neuroscience 2017; 346:197-202. [PMID: 28131627 DOI: 10.1016/j.neuroscience.2017.01.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 01/09/2017] [Accepted: 01/11/2017] [Indexed: 11/17/2022]
Abstract
Inward rectifying potassium - Kir - channels drive the resting potential to potassium reversal potential and, when disrupted, might be related to muscular diseases. Recently, Thyrotoxic Periodic Paralysis (TPP) has emerged as a channelopathy related to mutations in KCNJ18 gene, which encodes Kir2.6 channel. TPP is a neuromuscular disorder characterized by a triad of muscle weakness, hypokalemia, and thyrotoxicosis, the latter being essential for the crisis. Direct sequencing revealed two heterozygous mutations - D252N and R386C - in two TPP patients. KCNJ18 cDNAs were cloned into mammalian expression plasmids and transiently expressed in HEK 293T cells to investigate the functional effects of Kir2.6 mutations. Patch-clamp and confocal laser scanning microscopy experiments were carried out, comparing the WT channel to its mutants. D252N mutation down-regulates the Kir2.6 activity, decreasing the K+ current density (∼34%) when compared to the WT channel; whereas the mutation R386C shows no significant changes from WT. The mutant D252N Kir2.6 channel also showed a substantial reduction of ∼51% in membrane abundance relative to WT channel. Our study describes the functional consequences of a single amino acid change in Kir2.6 channel. Further analysis regarding hormonal conditions and Kir channel expression are required to provide new clues about the TPP pathophysiology.
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Affiliation(s)
- Rolf Matias Paninka
- Laboratório de Neurobiologia Estrutural e Funcional, Departamento de Biofísica, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil; Laboratório de Endocrinologia Molecular e Translacional, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Estevão Carlos-Lima
- Laboratório de Neurobiologia Estrutural e Funcional, Departamento de Biofísica, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Susan C Lindsey
- Laboratório de Endocrinologia Molecular e Translacional, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Ilda S Kunii
- Laboratório de Endocrinologia Molecular e Translacional, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Magnus R Dias-da-Silva
- Laboratório de Endocrinologia Molecular e Translacional, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
| | - Manoel Arcisio-Miranda
- Laboratório de Neurobiologia Estrutural e Funcional, Departamento de Biofísica, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
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Dotto RP, Giuffrida FMA, Franco L, Mathez ALG, Weinert LS, Silveiro SP, Sa JR, Reis AF, Dias-da-Silva MR. Unexpected finding of a whole HNF1B gene deletion during the screening of rare MODY types in a series of Brazilian patients negative for GCK and HNF1A mutations. Diabetes Res Clin Pract 2016; 116:100-4. [PMID: 27321323 DOI: 10.1016/j.diabres.2016.04.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 04/17/2016] [Indexed: 11/23/2022]
Abstract
Thirty-two patients with diabetes negative for point mutations in GCK and HNF1A underwent further molecular screening of GCK, HNF1A, HNF4A, and HNF1B by MLPA analysis. We described the first Brazilian case of MODY5 due to a heterozygous whole-gene deletion in HNF1B, who developed rapidly progressive renal failure and death.
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Affiliation(s)
- Renata P Dotto
- Laboratory of Molecular and Translational Endocrinology, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | | | - Luciana Franco
- Laboratory of Molecular and Translational Endocrinology, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Andreia L G Mathez
- Laboratory of Molecular and Translational Endocrinology, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Leticia S Weinert
- Endocrinology Unit - Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Sandra P Silveiro
- Endocrinology Unit - Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Joao R Sa
- Diabetes Center, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Andre F Reis
- Laboratory of Molecular and Translational Endocrinology, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.
| | - Magnus R Dias-da-Silva
- Laboratory of Molecular and Translational Endocrinology, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
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CONG LANXIANG, ZHAI XIANGHONG, WU FENGXIA, ZHU DONGYI, WANG ANCONG. Single nucleotide polymorphisms in glutathione S-transferase P1 and M1 genes and overall survival of patients with ovarian serous cystadenocarcinoma treated with chemotherapy. Oncol Lett 2016; 11:2525-2531. [DOI: 10.3892/ol.2016.4223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 01/04/2016] [Indexed: 11/05/2022] Open
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Paninka RM, Mazzotti DR, Kizys MML, Vidi AC, Rodrigues H, Silva SP, Kunii IS, Furuzawa GK, Arcisio-Miranda M, Dias-da-Silva MR. Whole genome and exome sequencing realignment supports the assignment of KCNJ12, KCNJ17, and KCNJ18 paralogous genes in thyrotoxic periodic paralysis locus: functional characterization of two polymorphic Kir2.6 isoforms. Mol Genet Genomics 2016; 291:1535-44. [PMID: 27008341 DOI: 10.1007/s00438-016-1185-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 02/22/2016] [Indexed: 11/28/2022]
Abstract
Next-generation sequencing (NGS) has enriched the understanding of the human genome. However, homologous or repetitive sequences shared among genes frequently produce dubious alignments and can puzzle NGS mutation analysis, especially for paralogous potassium channels. Potassium inward rectifier (Kir) channels are important to establish the resting membrane potential and regulating the muscle excitability. Mutations in Kir channels cause disorders affecting the heart and skeletal muscle, such as arrhythmia and periodic paralysis. Recently, a susceptibility muscle channelopathy-thyrotoxic periodic paralysis (TPP)-has been related to Kir2.6 channel (KCNJ18 gene). Due to their high nucleotide sequence homology, variants found in the potassium channels Kir2.6 and Kir2.5 have been mistakenly attributable to Kir2.2 polymorphisms or mutations. We aimed at elucidating nucleotide misalignments by performing realignment of whole exome sequencing (WES) and whole genome sequencing (WGS) reads to specific Kir2.2, Kir2.5, and Kir2.6 cDNA sequences using BWA-MEM/GATK pipeline. WES/WGS reads correctly aligned 26.9/43.2, 37.6/31.0, and 35.4/25.8 % to Kir2.2, Kir2.5, and Kir2.6, respectively. Realignment was able to reduce over 94 % of misalignments. No putative mutations of Kir2.6 were identified for the three TPP patients included in the cohort of 36 healthy controls using either WES or WGS. We also distinguished sequences for a single Kir2.2, a single Kir2.5 sequence, and two Kir2.6 isoforms, which haplotypes were named RRAI and QHEV, based on changes at 39, 40, 56, and 249 residues. Electrophysiology records on both Kir2.6_RRAI and _QHEV showed typical rectifying currents. In our study, the reduction of misalignments allowed the elucidation of paralogous gene sequences and two distinct Kir2.6 haplotypes, and pointed the need for checking the frequency of these polymorphisms in other populations with different genetic background.
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Affiliation(s)
- Rolf M Paninka
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Pedro de Toledo, 669, 11° andar, São Paulo, SP, 04039-032, Brazil.,Laboratory of Structural and Functional Neurobiology, Department of Biophysics, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Diego R Mazzotti
- Department of Psychobiology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Marina M L Kizys
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Pedro de Toledo, 669, 11° andar, São Paulo, SP, 04039-032, Brazil
| | - Angela C Vidi
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Pedro de Toledo, 669, 11° andar, São Paulo, SP, 04039-032, Brazil
| | - Hélio Rodrigues
- Department of Psychobiology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Silas P Silva
- Laboratory of Integrative Biology and Metabolism, Department of Biophysics, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Ilda S Kunii
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Pedro de Toledo, 669, 11° andar, São Paulo, SP, 04039-032, Brazil
| | - Gilberto K Furuzawa
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Pedro de Toledo, 669, 11° andar, São Paulo, SP, 04039-032, Brazil
| | - Manoel Arcisio-Miranda
- Laboratory of Structural and Functional Neurobiology, Department of Biophysics, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Magnus R Dias-da-Silva
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Pedro de Toledo, 669, 11° andar, São Paulo, SP, 04039-032, Brazil.
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Nascimento FP, Cardoso MG, Lindsey SC, Kunii IS, Valente FOF, Kizys MML, Delcelo R, Camacho CP, Maciel RMB, Dias-Da-Silva MR. Analysis of somatic mutations in BRAF, CDKN2A/p16 and PI3KCA in patients with medullary thyroid carcinoma. Mol Med Rep 2015; 13:1653-60. [PMID: 26718898 DOI: 10.3892/mmr.2015.4731] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 10/14/2015] [Indexed: 11/06/2022] Open
Abstract
Medullary thyroid carcinoma (MTC), a neuroendocrine tumor originating from thyroid parafollicular cells, has been demonstrated to be associated with mutations in RET, HRAS, KRAS and NRAS. However, the role of other genes involved in the oncogenesis of neural crest tumors remains to be fully investigated in MTC. The current study aimed to investigate the presence of somatic mutations in BRAF, CDKN2A and PI3KCA in MTC, and to investigate the correlation with disease progression. DNA was isolated from paraffin‑embedded tumors and blood samples from patients with MTC, and the hotspot somatic mutations were sequenced. A total of 2 novel HRAS mutations, p.Asp33Asn and p.His94Tyr, and polymorphisms within the 3' untranslated region (UTR) of CDKN2A (rs11515 and rs3088440) were identified, however, no mutations were observed in other genes. It was suggested that somatic point mutations in BRAF, CDKN2A and PI3KCA do not participate in the oncogenesis of MTC. Further studies are required in order to clarify the contribution of the polymorphisms identified in the 3'UTR of CDKN2A in MTC.
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Affiliation(s)
- Fabrício P Nascimento
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Sao Paulo 04039‑032, Brazil
| | - Mirian G Cardoso
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Sao Paulo 04039‑032, Brazil
| | - Susan C Lindsey
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Sao Paulo 04039‑032, Brazil
| | - Ilda S Kunii
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Sao Paulo 04039‑032, Brazil
| | - Flávia O F Valente
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Sao Paulo 04039‑032, Brazil
| | - Marina M L Kizys
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Sao Paulo 04039‑032, Brazil
| | - Rosana Delcelo
- Department of Pathology, Escola Paulista de Medicina, Universidade Federal de São Paulo, Sao Paulo 04039‑032, Brazil
| | - Cléber P Camacho
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Sao Paulo 04039‑032, Brazil
| | - Rui M B Maciel
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Sao Paulo 04039‑032, Brazil
| | - Magnus R Dias-Da-Silva
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Sao Paulo 04039‑032, Brazil
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Aberrant expression of Notch1, HES1, and DTX1 genes in glioblastoma formalin-fixed paraffin-embedded tissues. Tumour Biol 2015; 37:6935-42. [PMID: 26662803 DOI: 10.1007/s13277-015-4592-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 12/03/2015] [Indexed: 12/22/2022] Open
Abstract
Glioblastoma is the most common malignant brain tumor accounting for more than 54 % of all gliomas. Despite aggressive treatments, median survival remains less than 1 year. This might be due to the unavailability of effective molecular diagnostic markers and targeted therapy. Thus, it is essential to discover molecular mechanisms underlying disease by identifying dysregulated pathways involved in tumorigenesis. Notch signaling is one such pathway which plays an important role in determining cell fates. Since it is found to play a critical role in many cancers, we investigated the role of Notch genes in glioblastoma with an aim to identify biomarkers that can improve diagnosis. Using real-time PCR, we assessed the expression of Notch genes including receptors (Notch1, Notch2, Notch3, and Notch4), ligands (JAG1, JAG2, and DLL3), downstream targets (HES1 and HEY2), regulator Deltex1 (DTX1), inhibitor NUMB along with transcriptional co-activator MAML1, and a component of gamma-secretase complex APH1A in 15 formalin-fixed paraffin-embedded (FFPE) patient samples. Relative quantification was done by the 2(-ΔΔCt) method; the data are presented as fold change in gene expression normalized to an internal control gene and relative to the calibrator. The data revealed aberrant expression of Notch genes in glioblastoma compared to normal brain. More than 85 % of samples showed high Notch1 (P = 0.0397) gene expression and low HES1 (P = 0.011) and DTX1 (P = 0.0001) gene expression. Our results clearly show aberrant expression of Notch genes in glioblastoma which can be used as putative biomarkers together with histopathological observation to improve diagnosis, therapeutic strategies, and patient prognosis.
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Park YS, Na YS, Ryu MH, Lee CW, Park HJ, Lee JK, Park SR, Ryoo BY, Kang YK. FGFR2 Assessment in Gastric Cancer Using Quantitative Real-Time Polymerase Chain Reaction, Fluorescent In Situ Hybridization, and Immunohistochemistry. Am J Clin Pathol 2015; 143:865-72. [PMID: 25972329 DOI: 10.1309/ajcpnflsmwwpp8dr] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
OBJECTIVES Fibroblast growth factor receptor 2 (FGFR2) amplification has been reported to be a target for treatment in gastric cancer. However, an optimal tissue source and method for evaluating FGFR2 have yet to be established. METHODS Copy numbers were compared by quantitative polymerase chain reaction (qPCR) using frozen vs formalin-fixed, paraffin-embedded (FFPE) tissue and biopsy vs surgical specimens. We correlated the results of qPCR and immunohistochemistry (IHC) with fluorescence in situ hybridization (FISH) using stage IV gastric cancer biopsy specimens and validated the results in surgical specimens. RESULTS FFPE tissues were suitable for qPCR, and biopsy specimens were equivalent to or better than surgical specimens. qPCR and IHC results exhibited an excellent correlation with FISH at eight or more copies by qPCR in any kind of tissue, 5% or more by IHC in biopsy specimens, and 10% or more by IHC in surgical specimens. FGFR2 amplification was 6.6% in stage IV gastric cancers, and 42% of these showed heterogeneous amplification and overexpression. IHC indicated a good correlation with FISH even in the heterogeneous cases. CONCLUSIONS FFPE biopsy tissues are an adequate source for FGFR2 evaluation in gastric carcinomas, and a qPCR-based copy number assay can be used for screening. IHC is also a valid and practical method for evaluating FGFR2, considering frequent heterogeneity.
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Affiliation(s)
- Young Soo Park
- Department of Pathology, University of Ulsan College of Medicine, Republic of Korea
| | - Young-Soon Na
- Asan Institute for Life Science, University of Ulsan College of Medicine, Republic of Korea
| | - Min-Hee Ryu
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Republic of Korea
| | - Chae-Won Lee
- Asan Institute for Life Science, University of Ulsan College of Medicine, Republic of Korea
| | - Hye Jin Park
- Department of Pathology, University of Ulsan College of Medicine, Republic of Korea
| | - Ju-Kyung Lee
- Asan Institute for Life Science, University of Ulsan College of Medicine, Republic of Korea
| | - Sook Ryun Park
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Republic of Korea
| | - Baek-Yeol Ryoo
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Republic of Korea
| | - Yoon-Koo Kang
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Republic of Korea
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Wisniewski P, Romano RM, Kizys MML, Oliveira KC, Kasamatsu T, Giannocco G, Chiamolera MI, Dias-da-Silva MR, Romano MA. Adult exposure to bisphenol A (BPA) in Wistar rats reduces sperm quality with disruption of the hypothalamic-pituitary-testicular axis. Toxicology 2015; 329:1-9. [PMID: 25575453 DOI: 10.1016/j.tox.2015.01.002] [Citation(s) in RCA: 154] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Revised: 12/14/2014] [Accepted: 01/04/2015] [Indexed: 11/25/2022]
Abstract
Reproductive physiology involves complex biological processes that can be disrupted by exposure to environmental contaminants. The effects of bisphenol A (BPA) on spermatogenesis and sperm quality is still unclear. The objective of this study was to investigate the reproductive toxicity of BPA at dosages considered to be safe (5 or 25mg BPA/kg/day). We assessed multiple sperm parameters, the relative expression of genes involved in the central regulation of the hypothalamic-pituitary-testicular axis, and the serum concentrations of testosterone, estradiol, LH and FSH. BPA exposure reduced sperm production, reserves and transit time. Significant damage to the acrosomes and the plasma membrane with reduced mitochondrial activity and increased levels of defective spermatozoa may have compromised sperm function and caused faster movement through the epididymis. BPA exposure reduced the serum concentrations of testosterone, LH and FSH and increased the concentration of estradiol. The relative gene expression revealed an increase in gonadotropin releasing hormone receptor (Gnrhr), luteinizing hormone beta (Lhb), follicle stimulating hormone beta (Fshb), estrogen receptor beta (Esr2) and androgen receptor (Ar) transcripts in the pituitary and a reduction in estrogen receptor alpha (Esr1) transcripts in the hypothalamus. In this study, we demonstrated for the first time that adult male exposure to BPA caused a reduction in sperm production and specific functional parameters. The corresponding pattern of gene expression is indicative of an attempt by the pituitary to reestablish normal levels of LH, FSH and testosterone serum concentrations. In conclusion, these data suggest that at dosages previously considered nontoxic to reproductive function, BPA compromises the spermatozoa and disrupts the hypothalamic-pituitary-gonadal axis, causing a state of hypogonadotropic hypogonadism.
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Affiliation(s)
- Patricia Wisniewski
- Laboratory of Reproductive Toxicology, Department of Pharmacy, State University of Centro-Oeste, Parana, Brazil
| | - Renata M Romano
- Laboratory of Reproductive Toxicology, Department of Pharmacy, State University of Centro-Oeste, Parana, Brazil
| | - Marina M L Kizys
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp/EPM), São Paulo, SP, Brazil
| | - Kelen C Oliveira
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp/EPM), São Paulo, SP, Brazil
| | - Teresa Kasamatsu
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp/EPM), São Paulo, SP, Brazil
| | - Gisele Giannocco
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp/EPM), São Paulo, SP, Brazil
| | - Maria I Chiamolera
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp/EPM), São Paulo, SP, Brazil
| | - Magnus R Dias-da-Silva
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp/EPM), São Paulo, SP, Brazil
| | - Marco A Romano
- Laboratory of Reproductive Toxicology, Department of Pharmacy, State University of Centro-Oeste, Parana, Brazil.
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Saito KC, Fuziwara CS, Kimura ET. Nucleic acid recovery from thyroid fine-needle cytology slides. ACTA ACUST UNITED AC 2014; 57:490-1. [PMID: 24030191 DOI: 10.1590/s0004-27302013000600013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zapata M, Kunii IS, Paninka RM, Simões DMN, Castillo VA, Reche A, Maciel RMB, Dias da Silva MR. Molecular cloning of ion channels in Felis catus that are related to periodic paralyses in man: a contribution to the understanding of the genetic susceptibility to feline neck ventroflexion and paralysis. Biol Open 2014; 3:785-93. [PMID: 25063199 PMCID: PMC4163655 DOI: 10.1242/bio.20148003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Neck ventroflexion in cats has different causes; however, the most common is the hypokalemia associated with flaccid paralysis secondary to chronic renal failure. In humans, the most common causes of acute flaccid paralysis are hypokalemia precipitated by thyrotoxicosis and familial forms linked to mutations in sodium, potassium, and calcium channel genes. Here, we describe the sequencing and analysis of skeletal muscle ion channels in Felis catus that could be related to periodic paralyses in humans, contributing to the understanding of the genetic susceptibility to feline neck ventroflexion and paralysis. We studied genomic DNA from eleven cats, including five animals that were hyperthyroid with hypokalemia, although only one presented with muscle weakness, and six healthy control domestic cats. We identified the ion channel ortholog genes KCNJ2, KCNJ12, KCNJ14, CACNA1S and SCN4A in the Felis catus genome, together with several polymorphic variants. Upon comparative alignment with other genomes, we found that Felis catus provides evidence for a high genomic conservation of ion channel sequences. Although we hypothesized that neck ventroflexion in cats could be associated with a thyrotoxic or familial periodic paralysis channel mutation, we did not identify any previously detected human channel mutation in the hyperthyroid cat presenting hypokalemia. However, based on the small number of affected cats in this study, we cannot yet rule out this molecular mechanism. Notwithstanding, hyperthyroidism should still be considered as a differential diagnosis in hypokalemic feline paralysis.
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Affiliation(s)
- Marlyn Zapata
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04039032, SP, Brazil
| | - Ilda S Kunii
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04039032, SP, Brazil
| | - Rolf M Paninka
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04039032, SP, Brazil
| | - Denise M N Simões
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04039032, SP, Brazil
| | - Víctor A Castillo
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04039032, SP, Brazil
| | - Archivaldo Reche
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04039032, SP, Brazil
| | - Rui M B Maciel
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04039032, SP, Brazil
| | - Magnus R Dias da Silva
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04039032, SP, Brazil
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Kizys MML, Nesi-França S, Cardoso MG, Harada MY, Melo MCC, Chiamolera MI, Dias-da-Silva MR, Maciel RMB. The absence of mutations in homeobox candidate genes HOXA3, HOXB3, HOXD3 and PITX2 in familial and sporadic thyroid hemiagenesis. J Pediatr Endocrinol Metab 2014; 27:317-22. [PMID: 24127533 DOI: 10.1515/jpem-2013-0289] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Accepted: 09/09/2013] [Indexed: 11/15/2022]
Abstract
BACKGROUND The molecular mechanisms leading to the formation of the two thyroid symmetrical lobes, which are impaired in thyroid hemiagenesis (TH), are little known. OBJECTIVE The aim of this work was to search for mutations in thyroid developmental candidate genes HOXA3, HOXB3, HOXD3 and PITX2. METHODS Total DNA from peripheral blood was extracted and then the entire coding region of all these genes was amplified by polymerase chain reaction and direct sequencing. RESULTS Herein we describe familial cases of TH in two generations (proband and his father), in addition to other two sporadic cases. We have found polymorphisms in the HOXB3 (rs2229304), HOXD3 (rs34729309, rs1051929, c.543-199G>T and c.543-34G>A; and a new synonymous variant, NP_008829.3:p.314;C>G) and PITX2 (c.45+76C>T) genes, but no deleterious mutations. CONCLUSION These results suggest the existence of other left-right thyroid asymmetry candidate genes in humans such as classical Mendelian mutation-causing disease, as well as other etiopathogenic mechanisms such as epigenetic modifications, especially for sporadic hemiagenesis.
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Signorini PS, França MIC, Camacho CP, Lindsey SC, Valente FOF, Kasamatsu TS, Machado AL, Salim CP, Delcelo R, Hoff AO, Cerutti JM, Dias-da-Silva MR, Maciel RMB. A ten-year clinical update of a large RET p.Gly533Cys kindred with medullary thyroid carcinoma emphasizes the need for an individualized assessment of affected relatives. Clin Endocrinol (Oxf) 2014; 80:235-45. [PMID: 23745650 DOI: 10.1111/cen.12264] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 01/21/2013] [Accepted: 06/04/2013] [Indexed: 01/13/2023]
Abstract
OBJECTIVE Reviewing the clinical outcomes of a large kindred with a RET p.Gly533Cys mutation, 10 years after the first description of this kindred, has provided an important set of clinical data for healthcare decision-making. DESIGN AND PATIENTS We identified 728 RET533 Brazilian relatives, spread out over 7 generations. We performed clinical examination, biochemical and imaging analyses in the proband and in 103 carriers. MEASUREMENT AND RESULTS The proband has been followed without evidence of structural disease in the last 10 years but with elevated calcitonin. The clinical and surgical features of 60 thyroidectomized RET533 relatives were also described. Forty-six patients had MTC (21-72 years), and 11 patients had C-cell hyperplasia (CCH) (5-42 years). Twelve MTC patients with lymph node metastases had a tumour size of 0·7-2·8 cm. Calcitonin level and CEA were correlated with disease stage, and none of the patients presented with an altered PTH or metanephrine. A 63-year-old woman developed pheochromocytoma and breast cancer. Two other RET533 relatives developed lung squamous cell carcinoma and melanoma. CONCLUSIONS A vast clinical variability in RET533 presentation was observed, ranging from only an elevated calcitonin level (3%) to local metastatic disease (25%). Many individuals were cured (42%) and the majority had controlled chronic disease (56%), reinforcing the need for individualized ongoing risk stratification assessment. The importance of this update relies on the fact that it allows us to delineate the natural history of RET 533 MEN2A 10 years after its first description.
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Affiliation(s)
- Priscila S Signorini
- Department of Medicine, Laboratory of Molecular and Translational Endocrinology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
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Kizys MML, Cardoso MG, Lindsey SC, Melo MCC, Dias-da-Silva MR. Perspectives in isolation of microRNA from thyroid fine-needle aspiration: reply to the letter "Nucleic acid recovery from thyroid fine-needle cytology slides". ARQUIVOS BRASILEIROS DE ENDOCRINOLOGIA E METABOLOGIA 2013; 57:492-493. [PMID: 24030192 DOI: 10.1590/s0004-27302013000600014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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Kizys MML, Cardoso MG, Lindsey SC, Melo MCC, Silva MRDD. Perspectives in isolation of microRNA from thyroid fine-needle aspiration: reply to the letter "Nucleic acid recovery from thyroid fine-needle cytology slides". ARQUIVOS BRASILEIROS DE ENDOCRINOLOGIA E METABOLOGIA 2013; 57:393-4. [PMID: 23896807 DOI: 10.1590/s0004-27302013000500010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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