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https://www.readbyqxmd.com/read/28817817/assessment-of-direct-to-consumer-genetic-testing-policy-in-korea-based-on-consumer-preference
#1
Gicheol Jeong
AIMS: In June 2016, Korea permitted direct-to-consumer genetic testing (DTC-GT) on 42 genes. However, both the market and industry have not yet been fully activated. Considering the aforementioned context, this study provides important insights. METHODS: The Korean DTC-GT policy assessment is based on consumer preference analysis using a discrete choice experiment. In August 2016, a web-based survey was conducted to collect data from 1,200 respondents. RESULTS: The estimation results show that consumers prefer a DTC-GT product that is cheap, tests various items or genes, offers accurate test results, and guarantees the confidentiality of all information...
August 18, 2017: Public Health Genomics
https://www.readbyqxmd.com/read/28817611/the-directed-migration-of-gonadal-distal-tip-cells-in-caenorhabditis-elegans-requires-ngat-1-a-%C3%A3-1-4-n-acetylgalactosaminyltransferase-enzyme
#2
Joseph Veyhl, Robert J Dunn, Wendy L Johnston, Alexa Bennett, Lijia W Zhang, James W Dennis, Harry Schachter, Joseph G Culotti
Glycoproteins such as growth factor receptors and extracellular matrix have well-known functions in development and cancer progression, however, the glycans at sites of modification are often heterogeneous molecular populations which makes their functional characterization challenging. Here we provide evidence for a specific, discrete, well-defined glycan modification and regulation of a stage-specific cell migration in Caenorhabditis elegans. We show that a chain-terminating, putative null mutation in the gene encoding a predicted β1,4-N-acetylgalactosaminyltransferase, named ngat-1, causes a maternally rescued temperature sensitive (ts) defect in the second phase of the three phase migration pattern of the posterior, but not the anterior, hermaphrodite Distal Tip Cell (DTC)...
2017: PloS One
https://www.readbyqxmd.com/read/28817605/all-trans-retinoic-acid-suppresses-malignant-characteristics-of-cd133-positive-thyroid-cancer-stem-cells-and-induces-apoptosis
#3
Dan Mei, Bin Lv, Bo Chen, Shan Xiao, Jie Jiang, Yan Xie, Ling Jiang
Recently, diagnoses of radioiodine-refractory differentiated thyroid cancer (RAI-R DTC) have become more common; prognosis is poor. It has been suggested that cancer stem cells account for radiotherapy resistance. By flow cytometry, different expression percents of CD133 and OCT4 in thyroid cancer cell lines were detected. By real-time quantitative PCR, different mRNA expression of CD133, OCT4, GLUT1, thyroglobulin (TG), thyroperoxidase (TPO) and sodium iodine symporter (NIS) was analyzed; the localization of CD133, OCT4, and NIS expression was examined using immunofluorescence confocal microscopy...
2017: PloS One
https://www.readbyqxmd.com/read/28817373/cabozantinib-as-salvage-therapy-for-patients-with-tyrosine-kinase-inhibitor-refractory-differentiated-thyroid-cancer-results-of-a-multicenter-phase-ii-international-thyroid-oncology-group-trial
#4
Maria E Cabanillas, Jonas A de Souza, Susan Geyer, Lori J Wirth, Michael E Menefee, Stephen V Liu, Komal Shah, John Wright, Manisha H Shah
Purpose Sorafenib and lenvatinib are oral multikinase inhibitors targeting vascular endothelial growth factor receptor (VEGFR) and approved for radioiodine (RAI)-refractory differentiated thyroid cancer (DTC). However, there are no approved second- or third-line therapies. MET is implicated in resistance to VEGFR inhibitors. Cabozantinib is an oral multikinase inhibitor targeting MET in addition to VEGFR and is approved for medullary thyroid cancer. In a phase I study of cabozantinib, five of eight patients with DTC previously treated with a VEGFR-targeted therapy had an objective response to cabozantinib...
August 17, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28816945/99mtc-pertechnetate-avid-metastases-from-differentiated-thyroid-cancer-are-prone-to-benefit-from-131i-therapy-a-prospective-observational-study
#5
Min Liu, Li Chai, Qiong Luo, Maomei Ruan, Lingxiao Cheng, Zhongwei Lv, Libo Chen
The aim of this study is to determine the contribution of neck and chest Tc-pertechnetate scan to the management of postoperative patients with suspicious metastatic differentiated thyroid cancer (DTC), particularly to the prediction of response to radioiodine (I) therapy. Just before I administration, a total of 184 postoperative DTC patients with stimulated serum thyroglobulin (ssTg) >10 ng/mL were enrolled to undergo neck and chest Tc-pertechnetate scan, which were directly compared with post-therapeutic I scan to determine the concordance of site and number of metastatic lesions...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28816539/non-operative-management-of-differentiated-thyroid-cancer-in-california-a-population-level-analysis-of-29-978-patients
#6
Eric J Kuo, James X Wu, Ning Li, Kyle A Zanocco, Michael W Yeh, Masha J Livhits
OBJECTIVE: There has been increasing interest in active surveillance of papillary thyroid microcarcinoma (mPTC). The objective of this study was to characterize the incidence and outcomes of non-operatively managed differentiated thyroid cancers (DTCs) in California. METHODS: Biopsy-proven DTCs from the California Cancer Registry (CCR) were linked to data from the California Office of Statewide Health Planning and Development (2004-2012). Low-risk tumors were defined as localized disease measuring < 4 cm without extrathyroidal extension, nodal involvement, or distant metastasis...
August 17, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28816536/optimizing-lenvatinib-therapy-in-patients-with-metastatic-radioactive-iodine-resistant-differentiated-thyroid-cancers
#7
Sina Jasim, Nicole M Iniguez-Ariza, Crystal R Hilger, Ashish V Chintakuntlawar, Mabel M Ryder, John C Morris, Keith C Bible
BACKGROUND AND OBJECTIVES: Lenvatinib is approved for use in advanced radioactive iodine resistant differentiated thyroid cancers (RAIR-DTCs); its efficacy is indisputable, but toxicities are great, creating daunting challenges for patients and providers. Few data regarding early adverse events and impact on quality of life (QOL) exist; we sought to add clarity to these issues by analyzing our initial post-approval lenvatinib experience. METHODS: Standardized patient education was implemented, providing detailed instructions and expert provider contacts to facilitate timely reporting of toxicities and guide responsive actions...
August 17, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28812918/tyrosine-kinase-inhibitors-for-advanced-or-metastatic-thyroid-cancer-a-meta-analysis-of-randomized-controlled-trials
#8
Jen-Wei Liu, Chiehfeng Chen, El-Wui Loh, Chun-Cheng Chu, Mu-Yi Wang, Hsin-Ju Ouyang, Ya-Ting Chang, Wei-Zhan Zhuang, Ching-Wen Chou, Der-Jr Huang, Chia-Hwa Lee, Yun Yen, Ka-Wai Tam
BACKGROUND AND AIMS: Radioiodine-refractory advanced or metastatic thyroid cancer has poor prognosis. We conducted a meta-analysis of randomized controlled trials to evaluate the effectiveness and safety of tyrosine kinase inhibitors (TKIs) for advanced or metastatic thyroid cancer treatment. METHODS: Studies published until April 2017 were selected. The pooled effect size was calculated through meta-analysis by using random effects models. Outcomes were overall survival (OS), progression-free survival (PFS), objective response rate (RR), and adverse events (AEs)...
August 16, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28811311/linking-the-environment-daf-7-tgf%C3%AE-signaling-and-lag-2-dsl-ligand-expression-in-the-germline-stem-cell-niche
#9
Olga Pekar, Maria C Ow, Kailyn Y Hui, Marcus B Noyes, Sarah E Hall, E Jane Albert Hubbard
The developmental accumulation of proliferative germ cells in the C. elegans hermaphrodite is sensitive to the organismal environment. Previously, we found that the TGFβ signaling pathway links the environment and proliferative germ cell accumulation. Neuronal DAF-7/TGFβ causes a DAF-1/TGFβR signaling cascade in the gonadal distal tip cell (DTC), the germline stem cell niche, where it negatively regulates a DAF-3 SMAD and DAF-5 Sno-Ski. LAG-2, a founding DSL ligand family member, is produced in the DTC and activates the GLP-1/Notch receptor on adjacent germ cells to maintain germline stem cell fate...
August 15, 2017: Development
https://www.readbyqxmd.com/read/28809550/increase-in-the-magnetic-ordering-temperature-tc-as-a-function-of-the-applied-pressure-for-a2mn-mn-cn-6-a-k-rb-cs-prussian-blue-analogues
#10
M Sugimoto, S Yamashita, H Akutsu, Y Nakazawa, J G DaSilva, C M Kareis, Joel S Miller
Magnetization measurements under pressure reveal that the external hydrostatic pressure significantly increases in the ferrimagnetic transition temperature, Tc, for A2Mn[Mn(CN)6] (A = K, Rb, Cs). In the case of monoclinic A = K and Rb, dTc/dp values are 21.2 and 14.6 K GPa(-1), respectively, and Tc increases by 53 and 39%, respectively, from ambient pressure to 1.0 GPa. The cubic A = Cs compound also shows a monotonous increase with an initial rate of 4.22 K GPa(-1) and about 11.4 K GPa(-1) above 0.6 GPa, and an overall Tc increase by 26% at 1...
August 15, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28791253/potential-role-of-metabolic-intervention-in-the-management-of-advanced-differentiated-thyroid-cancer
#11
Sri Harsha Tella, Anuhya Kommalapati, Mary Angelynne Esquivel, Ricardo Correa
Well-differentiated thyroid carcinoma (DTC) is the most common endocrine malignancy that has an excellent prognosis with a 5-year survival rate of about 98%. However, approximately 50% of the patients with DTC who present with distant metastases (advanced DTC) die from the disease within 5 years of initial diagnosis even after getting the appropriate therapy. Apart from recent advancements in chemotherapy agents, the potential role of metabolic interventions, including the use of metformin, ketogenic diet, and high-dose vitamin C in the management of advanced cancers have been investigated as a less toxic co-adjuvant therapies...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28754228/post-treatment-surveillance-of-thyroid-cancer
#12
REVIEW
L Y Wang, I Ganly
An increased incidence of differentiated thyroid cancer (DTC) has resulted in an increased population of thyroid cancer survivors requiring ongoing disease surveillance. Our institution's risk-adapted surveillance strategy is based on a contemporary understanding of disease biology, guided by analysis of prognostic factors and balanced application of available surveillance modalities. The goal of this strategy is to detect recurrent disease early, identify patients who would benefit from further treatment and reduce over investigation of low-risk patients...
July 19, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28745874/new-molecular-design-concurrently-providing-superior-pure-blue-thermally-activated-delayed-fluorescence-and-optical-out-coupling-efficiencies
#13
P Rajamalli, N Senthilkumar, P-Y Huang, C-C Ren-Wu, H-W Lin, C-H Cheng
Simultaneous enhancement of out-coupling efficiency, internal quantum efficiency, and color purity in thermally activated delayed fluorescence (TADF) emitters is highly desired for the practical application of these materials. We designed and synthesized two isomeric TADF emitters, 2DPyM-mDTC and 3DPyM-pDTC, based on di(pyridinyl)methanone (DPyM) cores as the new electron-accepting units and di(tert-butyl)carbazole (DTC) as the electron-donating units. 3DPyM-pDTC, which is structurally nearly planar with a very small ΔEST, shows higher color purity, horizontal ratio, and quantum yield than 2DPyM-mDTC, which has a more flexible structure...
August 16, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28741453/no-effect-of-levothyroxine-and-levothyroxine-induced-subclinical-thyrotoxicosis-on-the-pharmacokinetics-of-sorafenib-in-healthy-male-subjects
#14
Funan Huang, Antoinette Ajavon-Hartmann, Erya Huang, John Lettieri, Rong Liu, Carol Pena, Matthias Berse
<b>Background</b>: Patients receiving the multikinase inhibitor sorafenib for locally recurrent or metastatic, progressive, differentiated thyroid carcinoma (DTC) refractory to radioactive iodine often receive concomitant levothyroxine for thyroid-stimulating hormone (TSH) suppression. In the phase 3 DTC trial (DECISION), sorafenib exposure was ~2-fold higher than that observed in other cancers. We assessed sorafenib pharmacokinetics without and with concomitant levothyroxine to examine whether a levothyroxine interaction or levothyroxine-induced subclinical thyrotoxicosis results in increased sorafenib exposure in DTC patients...
July 25, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28738950/a-decade-evaluation-of-a-state-trauma-system-has-access-to-inpatient-trauma-care-at-designated-trauma-centers-improved
#15
Dennis W Ashley, Etienne E Pracht, Regina S Medeiros, Elizabeth V Atkins, Elizabeth G Nesmith, Tracy J Johns, James R Dunne, Jeffrey M Nicholas
Recently, the trauma center component of the Georgia trauma system was evaluated demonstrating a 10 per cent probability of increased survival for severely injured patients treated at designated trauma centers (DTCs) versus nontrauma centers. The purpose of this study was to determine the effectiveness of a state trauma system to provide access to inpatient trauma care at DTCs for its residents. We reviewed 371,786 patients from the state's discharge database and identified 255,657 treated at either a DTC or a nontrauma center between 2003 and 2012...
July 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28738945/disparities-in-the-care-of-differentiated-thyroid-cancer-in-the-united-states-exploring-the-national-cancer-database
#16
Kathryn Jaap, Rebekah Campbell, James Dove, Marcus Fluck, Marie Hunsinger, Jeffrey Wild, Tania Arora, Mohsen Shabahang, Joseph Blansfield
Differentiated thyroid cancer (DTC) treatment is multifaceted, and may be influenced by socioeconomic factors. The goal of this study is to examine disparities in DTC treatment. DTC patients from 1998 to 2012 were identified using the National Cancer Database. DTC was identified in 262,041 patients. The mean age was 48.2. The majority of patients (52%) received care at Comprehensive Community Cancer Programs (CCCPs). Total thyroidectomy was less common at Community Cancer Programs (CCPs) [odds ratio (OR): 0...
July 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28735297/regulating-the-advertising-of-genetic-tests-in-europe-a-balancing-act
#17
REVIEW
Louiza Kalokairinou, Pascal Borry, Heidi Carmen Howard
Direct-to-consumer (DTC) genetic tests (GT) have provoked criticism over their potential adverse impact on public health. The European Parliament called for a ban on DTC advertising of GT during the debate for the adoption of a European Regulation on in vitro diagnostic medical devices. This proposal, however, was not ultimately retained in the final text. Instead, the regulation includes an article prohibiting misleading claims for this kind of advertising. These two different approaches raise questions about the optimal degree of regulation...
July 22, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28731735/critical-time-crystals-in-dipolar-systems
#18
Wen Wei Ho, Soonwon Choi, Mikhail D Lukin, Dmitry A Abanin
We analyze the quantum dynamics of periodically driven, disordered systems in the presence of long-range interactions. Focusing on the stability of discrete time crystalline (DTC) order in such systems, we use a perturbative procedure to evaluate its lifetime. For 3D systems with dipolar interactions, we show that the corresponding decay is parametrically slow, implying that robust, long-lived DTC order can be obtained. We further predict a sharp crossover from the stable DTC regime into a regime where DTC order is lost, reminiscent of a phase transition...
July 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28729772/serial-stimulated-thyroglobulin-measurements-are-more-specific-for-detecting-distant-metastatic-differentiated-thyroid-cancer-before-radioiodine-therapy
#19
Teng Zhao, Jun Liang, Tianjun Li, Wen Gao, Yansong Lin
OBJECTIVE: Preablative stimulated thyroglobulin (ps-Tg) has the potential to be used in identifying distant metastatic differentiated thyroid carcinoma (DM-DTC), but its single level can be affected by remnant thyroid tissue and thyrotropin (TSH). The objective of this retrospective study was to evaluate the value of serial ps-Tg measurements in identifying DM-DTC specifically. METHODS: A total of 317 DTC patients with serial measurements of ps-Tg, TSH and anti-Tg antibody were divided into M1 (n=72) and M0 (n=245) according to the presence of distant metastasis (DM) or not...
June 2017: Chinese Journal of Cancer Research, Chung-kuo Yen Cheng Yen Chiu
https://www.readbyqxmd.com/read/28728164/disseminated-tumour-cells-with-highly-aberrant-genomes-are-linked-to-poor-prognosis-in-operable-oesophageal-adenocarcinoma
#20
Sarah Schumacher, Christoph Bartenhagen, Martin Hoffmann, Daniel Will, Johannes C Fischer, Stephan E Baldus, Christian Vay, Georg Fluegen, Levent Dizdar, Daniel Vallböhmer, Christoph A Klein, Wolfram T Knoefel, Nikolas H Stoecklein, Birte Möhlendick
BACKGROUND: Chromosomal instability (CIN) has repeatedly been identified as a prognostic marker. Here we evaluated the percentage of aberrant genome per cell (PAG) as a measure of CIN in single disseminated tumour cells (DTC) isolated from patients with operable oesophageal adenocarcinoma (EAC), to assess the impact of CIN(high) DTCs on prognosis. METHODS: We isolated CK18(positive) DTCs from bone marrow (BM) or lymph node (LN) preparations of operable EAC patients...
July 20, 2017: British Journal of Cancer
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