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https://www.readbyqxmd.com/read/28077340/clinicopathological-characteristics-of-papillary-thyroid-cancer-in-children-with-emphasis-on-the-pubertal-status-and-association-with-brafv600e-mutation
#1
Şükran Poyrazoğlu, Rüveyde Bundak, Firdevs Baş, Gülçin Yeğen, Yasemin Şanlı, Feyza Darendeliler
OBJECTIVE: Papillary thyroid cancer (PTC) could behave differently in prepubertal than in pubertal children and between children and adults. BRAF gene activating mutations may associate with PTC by creating aberrant activation. We aimed to evaluate clinicopathological characteristics of PTC patients with emphasis on the pubertal status and investigate the association of BRAFV600E mutation with disease characteristics. METHODS: Medical records of 75 patients with PTC were reviewed retrospectively...
January 12, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28071986/evaluation-of-a-two-year-routine-application-of-molecular-testing-of-thyroid-fine-needle-aspirations-fna-using-a-7-gene-panel-in-a-primary-referral-setting-in-germany
#2
Markus Eszlinger, Katharina Böhme, Maha Ullmann, Fabian Görke, Udo Siebolts, Anna Neumann, Christiane Franzius, Sabine Adam, Thomas Molwitz, Christian Landvogt, Bassam Amro, Anja Hach, Berit Feldmann, Dieter Graf, Antje Wefer, Rainer Niemann, Catharina Bullmann, Günther Klaushenke, Reinhard Santen, Gregor Tönshoff, Velimir Ivancevic, Andreas Kögler, Eberhard Bell, Bernd Lorenz, Gerald Kluge, Christoph Hartenstein, Ilka Ruschenburg, Ralf Paschke
BACKGROUND: Major differences with respect to the diagnostic performance of a "ruling in" approach in the pre-surgical diagnosis of indeterminate thyroid fine needle aspirations (FNAs) have been reported. Therefore, the aim of this prospective multicenter study was to investigate the specific diagnostic impact of mutation testing using a 7-gene-panel in a routine primary referral setting analyzing FNAs from endocrinology and nuclear medicine practices in Germany. METHODS: RNA and DNA was extracted from 564 routine air-dried FNA smears obtained from 64 physicians and cytologically graded by one experienced cytopathologist...
January 10, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28062544/somatic-mutation-profiling-of-hobnail-variant-of-papillary-thyroid-carcinoma
#3
Luca Morandi, Alberto Righi, Francesca Maletta, Paola Rucci, Fabio Pagni, Marco Gallo, Sabrina Rossi, Leonardo Caporali, Anna Sapino, Ricardo Lloyd, Sofia Asioli
Hobnail variant of papillary thyroid carcinoma (HPTC) represents a recently described, aggressive and rare group of thyroid tumors with poorly understood pathogenesis. Molecular data about this group of cancers are few and a more detailed molecular characterization of these tumors is needed. The main objective of the study is to define a comprehensive molecular typing of HPTC. Eighteen patients affected by HPTC, including eighteen primary tumors and four lymph node metastases, were screened for NRAS, KRAS, HRAS, BRAF, TP53, PIK3CA, hTERT, PTEN, CDKN2A, EGFR, AKT1, CTNNB1, and NOTCH1 gene mutations...
January 6, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28052655/genetic-alterations-and-their-clinical-implications-in-high-recurrence-risk-papillary-thyroid-cancer
#4
Min-Young Lee, Bo Mi Ku, Hae Su Kim, Ji Yun Lee, Sung Hee Lim, Jong-Mu Sun, Se-Hoon Lee, Keunchil Park, Young Lyun Oh, Mineui Hong, Han-Sin Jeong, Young-Ik Son, Chung-Hwan Baek, Myung-Ju Ahn
Purpose: Papillary thyroid carcinomas (PTCs) frequently involve genetic alterations. The objective of this study was to investigate genetic alterations and further explore the relationships between these genetic alterations and clinicopathological characteristics in a high-recurrence risk (node positive, N1) PTC group. Materials and Methods: Tumor tissue blocks were obtained from 240 surgically resected patients with histologically confirmed stage III/IV (pT3/4 or N1) PTCs...
December 26, 2016: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28049366/primary-thyroid-carcinoma-with-low-risk-histology-and-distant-metastases-clinico-pathologic-and-molecular-characteristics
#5
Bin Xu, R Michael Tuttle, Mona Sabra, Ian Ganly, Ronald Ghossein
BACKGROUND: Distant metastases (DM) are a rare occurrence in well differentiatedwell-differentiated thyroid carcinoma. The aim of our study was to analyze the clinical, pathologic, and molecular features of primary thyroid carcinoma with low risk histology that develop DM. METHODS: Detailed clinico-pathologic review and targeted next generation sequencing were performed on a cohort of well-differentiatedwell-differentiated thyroid carcinoma lacking gross extrathyroidal extension, extensive vascular invasion or significant lymph node metastases but exhibiting distant metastases...
January 3, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28042533/a-brief-review-on-the-molecular-basis-of-medullary-tyroid-carcinoma
#6
REVIEW
Masoumeh Mohammadi, Mehdi Hedayati
Approximately 5-10% of all thyroid cancers are medullary thyroid carcinomas (MTC). MTC is mainly sporadic in nature, but 20-30% of cases are hereditary. Genetic testing for hereditary MTC is very important for the patient and his family, but the patients must be receiving appropriate genetic counseling. About 98% of patients with hereditary MTC have germline mutations in exons 10, 11, 13, 14, 15, 16 and intron 16 of the REarrangement during transfection (RET) proto-oncogene, but the etiology of the more frequent sporadic form of MTC (sMTC) is not well understood...
2017: Cell Journal
https://www.readbyqxmd.com/read/28031237/expression-profiling-of-a-human-thyroid-cell-line-stably-expressing-the-brafv600e-mutation
#7
Byoung-Ae Kim, Hyeon-Gun Jee, Jin Wook Yi, Su-Jin Kim, Young Jun Chai, June Young Choi, Kyu Eun Lee
BACKGROUND/AIM: The BRAF(V600E) mutation acts as an initiator of cancer development in papillary thyroid carcinoma (PTC). Gene expression changes caused by the BRAF(V600E) mutation may have an important role in thyroid cancer development. MATERIALS AND METHODS: To study genomic alterations caused by the BRAF(V600E) mutation, we made human thyroid cell lines that harbor the wild-type BRAF gene (Nthy/WT) and the V600E mutant-type BRAF gene (Nthy/V600E). RESULTS: Flow cytometry and western blotting showed stable transfection of the BRAF gene...
January 2017: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/28030816/down-regulation-of-14q32-encoded-mirnas-and-tumor-suppressor-role-for-mir-654-3p-in-papillary-thyroid-cancer
#8
Murilo Vieira Geraldo, Helder Imoto Nakaya, Edna Teruko Kimura
Papillary thyroid carcinoma (PTC) is the most prevalent malignant neoplasia of the thyroid gland. A fraction of PTC cases show loss of differentiation and aggressive behavior, with radioiodine therapy resistance and metastasis. Although microRNAs (miRNAs) emerged as promising molecular markers for PTC, their role in the loss of differentiation observed during PTC progression remains to be fully understood. We performed the large-scale analysis of miRNA expression during PTC progression in BRAFT1799A-transgenic animals (Tg-Braf) and thyroid cancer cell lines and identified the marked downregulation of several miRNAs from the region 14q32...
December 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/28028337/thyroid-fnac-containing-h%C3%A3-rthle-cells-and-h%C3%A3-rthle-like-cells-a-study-of-128-cases
#9
Aylin Yazgan, Serdar Balci, Nazmiye Dincer, Pamir Eren Ersoy, Dilek Tuzun, Reyhan Ersoy, Cigdem Irkkan, Bekir Cakir, Gulnur Guler
AIM: It is a diagnostic challenge to differentiate benign and malignant cytology in the presence of Hürthle cells. In our previous study, it was determined that in fine needle aspirations (FNA), the malignancy outcome of the Hürthle cells containing group tend to be papillary thyroid carcinoma (PTC) in a higher percentage. The most common misinterpretation is caused by PTC cells with large cytoplasm-like Hürthle cells. The aim of this study is to predict histologic outcome of the nodules, which have Hürthle cells in FNA according to cytological, clinical features, and BRAF(V600E) mutation status...
October 2016: Journal of Cytology
https://www.readbyqxmd.com/read/28013235/kinase-impact-assessment-in-the-landscape-of-fusion-genes-that-retain-kinase-domains-a-pan-cancer-study
#10
Pora Kim, Peilin Jia, Zhongming Zhao
Assessing the impact of kinase in gene fusion is essential for both identifying driver fusion genes (FGs) and developing molecular targeted therapies. Kinase domain retention is a crucial factor in kinase fusion genes (KFGs), but such a systematic investigation has not been done yet. To this end, we analyzed kinase domain retention (KDR) status in chimeric protein sequences of 914 KFGs covering 312 kinases across 13 major cancer types. Based on 171 kinase domain-retained KFGs including 101 kinases, we studied their recurrence, kinase groups, fusion partners, exon-based expression depth, short DNA motifs around the break points and networks...
December 24, 2016: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28009980/a-comparison-of-the-clinicopathological-features-and-prognoses-of-the-classical-and-the-tall-cell-variant-of-papillary-thyroid-cancer-a-meta-analysis
#11
Zeming Liu, Wen Zeng, Tianwen Chen, Yawen Guo, Chao Zhang, Chunping Liu, Tao Huang
Papillary thyroid cancer (PTC) accounts for 80-90% of all thyroid malignancies. The tall cell variant (TCV) is a rare aggressive histotype of PTC. We performed a meta-analysis to compare the clinicopathological characteristics and prognostic factors of TCV with those of classical papillary thyroid carcinoma (cPTC). A literature search was performed using the PubMed and EMBASE databases using Medical Subject Headings and keywords. Twenty studies that included 1871 patients with TCV and 75323 patients with cPTC were included in our meta-analysis...
December 21, 2016: Oncotarget
https://www.readbyqxmd.com/read/28009606/hobnail-variant-of-papillary-thyroid-carcinoma-clinicopathologic-and-molecular-evidence-of-progression-to-undifferentiated-carcinoma-in-2-cases
#12
José M Cameselle-Teijeiro, Irene Rodríguez-Pérez, Ricardo Celestino, Catarina Eloy, Magalí Piso-Neira, Ihab Abdulkader-Nallib, Paula Soares, Manuel Sobrinho-Simões
The hobnail variant (HV) of papillary thyroid carcinoma (PTC) is an unusual entity recently proposed as an aggressive variant of PTC. We describe the pathologic and molecular features of 2 cases of HV of PTC. Both tumors presented in stage III (pT3 pN1a M0). The first case was diagnosed in a 62-year-old man, whereas the second was in a 53-year-old woman. Both patients were treated with total thyroidectomy and radioactive iodine. The primary tumors showed a hobnail/micropapillary pattern in ≥50% of the neoplasm, and positivity for TTF-1, TTF-2, thyroglobulin (TG), cyclin D1, and p53...
December 22, 2016: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28008451/values-of-molecular-markers-in-the-differential-diagnosis-of-thyroid-abnormalities
#13
REVIEW
T M P B Tennakoon, M Rushdhi, A D C U Ranasinghe, R S Dassanayake
INTRODUCTION: Thyroid cancer (TC), follicular adenoma (FA) and Hashimoto's thyroiditis (HT) are three of the most frequently reported abnormalities that affect the thyroid gland. A frequent co-occurrence along with similar histopathological features is observed between TC and FA as well as between TC and HT. The conventional diagnostic methods such as histochemical analysis present complications in differential diagnosis when these abnormalities occur simultaneously. Hence, the authors recognize novel methods based on screening genetic defects of thyroid abnormalities as viable diagnostic and prognostic methods that could complement the conventional methods...
December 22, 2016: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28004221/overexpression-of-teneurin-transmembrane-protein-1-is-a-potential-marker-of-disease-progression-in-papillary-thyroid-carcinoma
#14
Shih-Ping Cheng, Ming-Jen Chen, Ming-Nan Chien, Chi-Hsin Lin, Jie-Jen Lee, Chien-Liang Liu
Although papillary thyroid cancer is a relatively indolent malignancy, its progression may be associated with dedifferentiation and resistance to radioactive iodine treatment. In this study, patterns of differentially expressed genes in association with disease progression were systemically evaluated. We firstly performed transcriptome analyses for four matched cancerous and noncancerous tissue pairs of the classical subtype of papillary thyroid cancer. Among the upregulated and downregulated genes, the expression of 164 and 183 genes increased and decreased, respectively, from stage I to stage IV...
December 21, 2016: Clinical and Experimental Medicine
https://www.readbyqxmd.com/read/27997357/effect-of-the-micronutrient-iodine-in-thyroid-carcinoma-angiogenesis
#15
Kayla Daniell, Carmelo Nucera
Iodide is a micronutrient essential for thyroid hormone production. The uptake and metabolism of iodide by thyrocytes is crucial to proper thyroid function. Iodide ions are drawn into the thyroid follicular cell via the sodium-iodide symporter (NIS) in the cell membrane and become integrated into tyrosyl residues to ultimately form thyroid hormones. We sought to learn how an abnormal concentration of iodide within thyrocyte can have significant effects on the thyroid, specifically the surrounding vascular network...
December 20, 2016: Aging
https://www.readbyqxmd.com/read/27978891/-advances-in-studies-of-the-genes-related-to-thyroid-carcinoma
#16
J T Zhi, X Q Zheng, M Gao
Thyroid carcinoma (TC) is the most common endocrine cancer and its incidence has been increasing globally over the past decades. With the development of the genetic technology, more and more evidences showed that many genes affect the biological behaviors of TC, making sense to early diagnosis, predicting the prognosis and targeted therapy for TC. BRAF mutation is specific to papillary thyroid carcinoma (PTC). It can not only predict the prognosis, but also have diagnosis value. RET rearrangements are identified as a specific genetic event in PTC...
December 7, 2016: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/27956840/association-of-telomerase-reverse-transcriptase-promoter-mutations-with-clinicopathological-features-and-prognosis-of-thyroid-cancer-a-meta-analysis
#17
Xingyun Su, Xiaoxia Jiang, Weibin Wang, Haiyong Wang, Xin Xu, Aihui Lin, Xiaodong Teng, Huiling Wu, Lisong Teng
The clinicopathological and prognostic significance of telomerase reverse transcriptase (TERT) promoter mutations have been widely investigated in thyroid cancer; however, the results are still discrepant. Systematic searches were performed in PubMed, Web of Science, Scopus, Ovid, and the Cochran Library databases for relevant articles prior to April 2016. Mutation rates were synthesized by R statistical software. The odds ratio or standardized mean difference with 95% confidence interval was pooled by Stata...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27938611/-the-clinical-significance-of-delphian-lymph-node-metastasis-in-papillary-thyroid-cancer
#18
G B Zheng, S L Hao, X C Liu, J Y Ning, G C Wu, D Wang, B Y Li, L X Jiang, X C Song, H T Zheng
Objective: To evaluate the clinical significance of Delphian lymph node (DLN) metastasis in papillary thyroid cancer (PTC). Method: A total of 505 cases with PTC confirmed pathologically in our hospital between January 2015 and December 2015 were retrospectively reviewed. 208 patients with DLN assessed separately by histopathologic examination who underwent primary surgery for PTC were included for the following analysis. Results: In 208 patients, the detection rate of DLN was 63.0% and the metastasis rate of DLN was 21...
November 7, 2016: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/27936049/clinicopathological-features-and-prognosis-of-papillary-thyroid-microcarcinoma-for-surgery-and-relationships-with-the-brafv600e-mutational-status-and-expression-of-angiogenic-factors
#19
Chenlei Shi, Yong Guo, Yichen Lv, Abiyasi Nanding, Tiefeng Shi, Huadong Qin, Jianjun He
OBJECTIVE: To investigate the clinicopathological characteristics of papillary thyroid microcarcinoma (PTMC) for surgery by comparing the difference between PTMC and larger papillary thyroid carcinoma (LPTC). METHODS: We analyzed the differences in the clinicopathological characteristics, prognosis, B-type RAF kinase (BRAF)V600E mutational status and expression of angiogenic factors, including pigment epithelium-derived factor (PEDF), Vascular Endothelial Growth Factor (VEGF), and hypoxia-inducible factor alpha subunit (HIF-1α), between PTMC and LPTC by retrospectively reviewing the records of 251 patients with papillary thyroid carcinoma, 169 with PTMC, and 82 with LPTC (diameter >1 cm)...
2016: PloS One
https://www.readbyqxmd.com/read/27923591/braf-v600e-mutation-as-a-predictor-of-thyroid-malignancy-in-indeterminate-nodules-a-systematic-review-and-meta-analysis
#20
REVIEW
M Jinih, N Foley, O Osho, L Houlihan, A A Toor, J Z Khan, A A Achakzai, H P Redmond
BACKGROUND: Thyroid nodules are usually diagnosed using fine-needle aspiration (FNA). The sensitivity limitations of FNA result in 10-30% of nodules being classified as "indeterminate". The BRAF(V600E) mutation is associated with papillary thyroid carcinoma (PTC). We conducted a systemic review and meta-analysis to evaluate the diagnostic utility of the BRAF(V600E) mutation in indeterminate nodules. METHOD: PUBMED and EMBASE were searched for studies testing for the BRAF(V600E) involving indeterminate nodules (Thy3a, Thy3f, Thy4) and containing information on final surgical histopathology...
November 22, 2016: European Journal of Surgical Oncology
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