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https://www.readbyqxmd.com/read/29434669/copy-number-variation-and-regions-of-homozygosity-analysis-in-patients-with-m%C3%A3-llerian-aplasia
#1
Durkadin Demir Eksi, Yiping Shen, Munire Erman, Lynn P Chorich, Megan E Sullivan, Meric Bilekdemir, Elanur Yılmaz, Guven Luleci, Hyung-Goo Kim, Ozgul M Alper, Lawrence C Layman
Background: Little is known about the genetic contribution to Müllerian aplasia, better known to patients as Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome. Mutations in two genes (WNT4 and HNF1B) account for a small number of patients, but heterozygous copy number variants (CNVs) have been described. However, the significance of these CNVs in the pathogenesis of MRKH is unknown, but suggests possible autosomal dominant inheritance. We are not aware of CNV studies in consanguineous patients, which could pinpoint genes important in autosomal recessive MRKH...
2018: Molecular Cytogenetics
https://www.readbyqxmd.com/read/29422604/genome-wide-meta-analysis-identifies-five-new-susceptibility-loci-for-pancreatic-cancer
#2
Alison P Klein, Brian M Wolpin, Harvey A Risch, Rachael Z Stolzenberg-Solomon, Evelina Mocci, Mingfeng Zhang, Federico Canzian, Erica J Childs, Jason W Hoskins, Ashley Jermusyk, Jun Zhong, Fei Chen, Demetrius Albanes, Gabriella Andreotti, Alan A Arslan, Ana Babic, William R Bamlet, Laura Beane-Freeman, Sonja I Berndt, Amanda Blackford, Michael Borges, Ayelet Borgida, Paige M Bracci, Lauren Brais, Paul Brennan, Hermann Brenner, Bas Bueno-de-Mesquita, Julie Buring, Daniele Campa, Gabriele Capurso, Giulia Martina Cavestro, Kari G Chaffee, Charles C Chung, Sean Cleary, Michelle Cotterchio, Frederike Dijk, Eric J Duell, Lenka Foretova, Charles Fuchs, Niccola Funel, Steven Gallinger, J Michael M Gaziano, Maria Gazouli, Graham G Giles, Edward Giovannucci, Michael Goggins, Gary E Goodman, Phyllis J Goodman, Thilo Hackert, Christopher Haiman, Patricia Hartge, Manal Hasan, Peter Hegyi, Kathy J Helzlsouer, Joseph Herman, Ivana Holcatova, Elizabeth A Holly, Robert Hoover, Rayjean J Hung, Eric J Jacobs, Krzysztof Jamroziak, Vladimir Janout, Rudolf Kaaks, Kay-Tee Khaw, Eric A Klein, Manolis Kogevinas, Charles Kooperberg, Matthew H Kulke, Juozas Kupcinskas, Robert J Kurtz, Daniel Laheru, Stefano Landi, Rita T Lawlor, I-Min Lee, Loic LeMarchand, Lingeng Lu, Núria Malats, Andrea Mambrini, Satu Mannisto, Roger L Milne, Beatrice Mohelníková-Duchoňová, Rachel E Neale, John P Neoptolemos, Ann L Oberg, Sara H Olson, Irene Orlow, Claudio Pasquali, Alpa V Patel, Ulrike Peters, Raffaele Pezzilli, Miquel Porta, Francisco X Real, Nathaniel Rothman, Ghislaine Scelo, Howard D Sesso, Gianluca Severi, Xiao-Ou Shu, Debra Silverman, Jill P Smith, Pavel Soucek, Malin Sund, Renata Talar-Wojnarowska, Francesca Tavano, Mark D Thornquist, Geoffrey S Tobias, Stephen K Van Den Eeden, Yogesh Vashist, Kala Visvanathan, Pavel Vodicka, Jean Wactawski-Wende, Zhaoming Wang, Nicolas Wentzensen, Emily White, Herbert Yu, Kai Yu, Anne Zeleniuch-Jacquotte, Wei Zheng, Peter Kraft, Donghui Li, Stephen Chanock, Ofure Obazee, Gloria M Petersen, Laufey T Amundadottir
In 2020, 146,063 deaths due to pancreatic cancer are estimated to occur in Europe and the United States combined. To identify common susceptibility alleles, we performed the largest pancreatic cancer GWAS to date, including 9040 patients and 12,496 controls of European ancestry from the Pancreatic Cancer Cohort Consortium (PanScan) and the Pancreatic Cancer Case-Control Consortium (PanC4). Here, we find significant evidence of a novel association at rs78417682 (7p12/TNS3, P = 4.35 × 10-8). Replication of 10 promising signals in up to 2737 patients and 4752 controls from the PANcreatic Disease ReseArch (PANDoRA) consortium yields new genome-wide significant loci: rs13303010 at 1p36...
February 8, 2018: Nature Communications
https://www.readbyqxmd.com/read/29417725/whole-exome-sequencing-for-mutation-detection-in-pediatric-disorders-of-insulin-secretion-maturity-onset-diabetes-of-the-young-and-congenital-hyperinsulinism
#3
S R Johnson, P J Leo, A M McInerney-Leo, L K Anderson, M Marshall, I McGown, F Newell, M A Brown, L S Conwell, M Harris, E L Duncan
BACKGROUND: To assess the utility of whole-exome sequencing (WES) for mutation detection in maturity-onset diabetes of the young (MODY) and congenital hyperinsulinism (CHI). MODY and CHI are the two commonest monogenic disorders of glucose-regulated insulin secretion in childhood, with 13 causative genes known for MODY and 10 causative genes identified for CHI. The large number of potential genes makes comprehensive screening using traditional methods expensive and time-consuming. METHODS: Ten subjects with MODY and five with CHI with known mutations underwent WES using two different exome capture kits (Nimblegen SeqCap EZ Human v3...
February 8, 2018: Pediatric Diabetes
https://www.readbyqxmd.com/read/29396371/genome-wide-analysis-of-pdx1-target-genes-in-human-pancreatic-progenitors
#4
Xianming Wang, Michael Sterr, Ingo Burtscher, Shen Chen, Anja Hieronimus, Fausto Machicao, Harald Staiger, Hans-Ulrich Häring, Gabriele Lederer, Thomas Meitinger, Filippo M Cernilogar, Gunnar Schotta, Martin Irmler, Johannes Beckers, Martin Hrabě de Angelis, Michael Ray, Christopher V E Wright, Mostafa Bakhti, Heiko Lickert
OBJECTIVE: Homozygous loss-of-function mutations in the gene coding for the homeobox transcription factor (TF) PDX1 leads to pancreatic agenesis, whereas heterozygous mutations can cause Maturity-Onset Diabetes of the Young 4 (MODY4). Although the function of Pdx1 is well studied in pre-clinical models during insulin-producing β-cell development and homeostasis, it remains elusive how this TF controls human pancreas development by regulating a downstream transcriptional program. Also, comparative studies of PDX1 binding patterns in pancreatic progenitors and adult β-cells have not been conducted so far...
January 30, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29372472/detection-of-copy-number-variations-by-pair-analysis-using-next-generation-sequencing-data-in-inherited-kidney-diseases
#5
China Nagano, Kandai Nozu, Naoya Morisada, Masahiko Yazawa, Daisuke Ichikawa, Keita Numasawa, Hiroyo Kourakata, Chieko Matsumura, Satoshi Tazoe, Ryojiro Tanaka, Tomohiko Yamamura, Shogo Minamikawa, Tomoko Horinouchi, Keita Nakanishi, Junya Fujimura, Nana Sakakibara, Yoshimi Nozu, Ming Juan Ye, Hiroshi Kaito, Kazumoto Iijima
BACKGROUND: Comprehensive genetic approaches for diagnosing inherited kidney diseases using next-generation sequencing (NGS) have recently been established. However, even with these approaches, we are still failing to detect gene defects in some patients who appear to suffer from genetic diseases. One of the reasons for this is the difficulty of detecting copy number variations (CNVs) using our current approaches. For such cases, we can apply methods of array-based comparative genomic hybridization (aCGH) or multiplex ligation and probe amplification (MLPA); however, these are expensive and laborious and also often fail to identify CNVs...
January 25, 2018: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/29338553/comprehensive-clinicopathologic-and-updated-immunohistochemical-characterization-of-primary-ovarian-mucinous-carcinoma
#6
Dina Bassiouny, Nadia Ismiil, Valerie Dubé, Guangming Han, Matthew Cesari, Fang-I Lu, Elzbieta Slodkowska, Carlos Parra-Herran, Hak Fai Chiu, Magda Naeim, Nim Li, Mahmoud Khalifa, Sharon Nofech-Mozes
The distinction of primary mucinous ovarian carcinoma (PMOC) from other primaries or secondaries is essential for selecting therapeutic options and prognostication. We aimed to characterize the immunohistochemical profile of 36 PMOCs using an extended immunohistochemical panel, with clinicopathologic features and outcome. PAX8 was negative in 30 (83.3%), and SATB2 was negative in 32/35. HNF1B, AMACR, and napsin-A were detected in 33 (91.7%), 35 (97.2%), and 0 (0%), respectively. MMR proteins and ARID1A were retained in 100%; PTEN was lost in 4 (11...
January 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29289465/investigating-the-role-of-transcription-factors-of-pancreas-development-in-pancreatic-cancer
#7
REVIEW
Ahmad Abu Turab Naqvi, Gulam Mustafa Hasan, Md Imtaiyaz Hassan
Pancreatic cancer (PC) is the seventh most common cause of cancer-related deaths worldwide that kills more than 300,000 people every year. Prognosis of PC is very poor with a five-year survival rate about 5%. The most common and highly observed type of PC is pancreatic ductal adenocarcinoma (PDAC). It is preceded by the progression of precursor lesions such as Pancreatic Intraepithelial Neoplasia (PanIN), Intraductal Papillary Neoplasm (IPMN) and Mucinous Cystic Neoplasm (MCN). PanIN is the most common among these premalignant lesions...
December 24, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/29207974/spectrum-of-mutations-in-monogenic-diabetes-genes-identified-from-high-throughput-dna-sequencing-of-6888-individuals
#8
Vikas Bansal, Johann Gassenhuber, Tierney Phillips, Glenn Oliveira, Rebecca Harbaugh, Nikki Villarasa, Eric J Topol, Thomas Seufferlein, Bernhard O Boehm
BACKGROUND: Diagnosis of monogenic as well as atypical forms of diabetes mellitus has important clinical implications for their specific diagnosis, prognosis, and targeted treatment. Single gene mutations that affect beta-cell function represent 1-2% of all cases of diabetes. However, phenotypic heterogeneity and lack of family history of diabetes can limit the diagnosis of monogenic forms of diabetes. Next-generation sequencing technologies provide an excellent opportunity to screen large numbers of individuals with a diagnosis of diabetes for mutations in disease-associated genes...
December 6, 2017: BMC Medicine
https://www.readbyqxmd.com/read/29181843/genetic-factors-influencing-prostate-cancer-risk-in-norwegian-men
#9
Haitao Chen, Charles M Ewing, Sigun Zheng, Eli M Grindedaal, Kathleen A Cooney, Kathleen Wiley, Srdjan Djurovic, Ole A Andreassen, Karol Axcrona, Ian G Mills, Jianfeng Xu, Lovise Maehle, Sophie D Fosså, William B Isaacs
Norway has one of the highest rates of death due to prostate cancer (PCa) in the world. To assess the contribution of both common and rare single nucleotide variants (SNPs) to the prostate cancer burden in Norway, we assessed the frequency of the established prostate cancer susceptibility allele, HOXB13 G84E, as well as a series of validated, common PCa risk SNPs in a Norwegian PCa population of 779 patients. The G84E allele was observed in 2.3% of patients compared to 0.7% of control individuals, OR = 3...
November 27, 2017: Prostate
https://www.readbyqxmd.com/read/29169318/genome-wide-dna-methylation-profiling-reveals-novel-epigenetic-signatures-in-squamous-cell-lung-cancer
#10
Yuan-Xiang Shi, Ying Wang, Xi Li, Wei Zhang, Hong-Hao Zhou, Ji-Ye Yin, Zhao-Qian Liu
BACKGROUND: Epigenetic alterations are strongly associated with the development of cancer. The aim of this study was to identify epigenetic pattern in squamous cell lung cancer (LUSC) on a genome-wide scale. RESULTS: Here we performed DNA methylation profiling on 24 LUSC and paired non-tumor lung (NTL) tissues by Illumina Human Methylation 450 K BeadArrays, and identified 5214 differentially methylated probes. By integrating DNA methylation and mRNA expression data, 449 aberrantly methylated genes accompanied with altered expression were identified...
November 23, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29158444/hnf1b-controls-epithelial-organization-and-cell-polarity-during-ureteric-bud-branching-and-collecting-duct-morphogenesis
#11
Audrey Desgrange, Claire Heliot, Ilya Skovorodkin, Saad U Akram, Janne Heikkilä, Veli-Pekka Ronkainen, Ilkka Miinalainen, Seppo J Vainio, Silvia Cereghini
Kidney development depends crucially on proper ureteric bud branching giving rise to the entire collecting duct system. The transcription factor HNF1B is required for the early steps of ureteric bud branching, yet the molecular and cellular events regulated by HNF1B are poorly understood. We report that specific removal of Hnf1b from the ureteric bud leads to defective cell-cell contacts and apicobasal polarity during the early branching events. High-resolution ex vivo imaging combined with a membranous fluorescent reporter strategy show decreased mutant cell rearrangements during mitosis-associated cell dispersal and severe epithelial disorganization...
December 15, 2017: Development
https://www.readbyqxmd.com/read/29156765/network-directed-cis-mediator-analysis-of-normal-prostate-tissue-expression-profiles-reveals-downstream-regulatory-associations-of-prostate-cancer-susceptibility-loci
#12
Nicholas B Larson, Shannon K McDonnell, Zach Fogarty, Melissa C Larson, John Cheville, Shaun Riska, Saurabh Baheti, Alexandra M Weber, Asha A Nair, Liang Wang, Daniel O'Brien, Jaime Davila, Daniel J Schaid, Stephen N Thibodeau
Large-scale genome-wide association studies have identified multiple single-nucleotide polymorphisms associated with risk of prostate cancer. Many of these genetic variants are presumed to be regulatory in nature; however, follow-up expression quantitative trait loci (eQTL) association studies have to-date been restricted largely to cis-acting associations due to study limitations. While trans-eQTL scans suffer from high testing dimensionality, recent evidence indicates most trans-eQTL associations are mediated by cis-regulated genes, such as transcription factors...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29120028/precision-medicine-for-monogenic-diabetes-from-a-survey-to-the-development-of-a-next-generation-diagnostic-panel
#13
Sakina Kherra, Jean-Louis Blouin, Federico Santoni, Valerie Schwitzgebel
Monogenic diabetes (MD) accounts for 1-2% of all diabetes cases. Because of its wide phenotypic spectrum, MD is often misdiagnosed as type 1 or type 2 diabetes. While clinical and biochemical parameters can suggest MD, a definitive diagnosis requires genetic analysis. We conducted a survey among clinicians specialising in diabetes to document the cases with MD. Of 74 clinically suspected MD patients, 46% had undergone genetic analysis, which was mostly conducted using Sanger's classical sequencing method. The most common recorded mutations were located in the GCK gene, followed by the mitochondrial genome (m...
November 9, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29113990/notch-is-required-for-the-formation-of-all-nephron-segments-and-primes-nephron-progenitors-for-differentiation
#14
Eunah Chung, Patrick Deacon, Joo-Seop Park
Notch signaling plays important roles during mammalian nephrogenesis. To investigate if Notch regulates nephron segmentation, we performed Notch loss-of-function and gain-of-function studies in developing nephrons in mice. Contrary to the previous notion that Notch signaling promotes the formation of proximal tubules and represses the formation of distal tubules in the mammalian nephron, we show that inhibition of Notch blocks the formation of all nephron segments and that constitutive activation of Notch in developing nephrons does not promote or repress the formation of a specific segment...
November 7, 2017: Development
https://www.readbyqxmd.com/read/29061586/the-promise-and-practice-of-genetics-on-diabetes-care-the-fog-rises-to-reveal-a-field-of-genetic-complexity-in-hnf1b
#15
Stephen S Rich
No abstract text is available yet for this article.
November 2017: Diabetes Care
https://www.readbyqxmd.com/read/28942246/inhibition-of-hepatocyte-nuclear-factor-1b-induces-hepatic-steatosis-through-dpp4-nox1-mediated-regulation-of-superoxide
#16
Zi Long, Meng Cao, Shuhao Su, Guangyuan Wu, Fansen Meng, Hao Wu, Jiangzheng Liu, Weihua Yu, Kamran Atabai, Xin Wang
Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disorder that is closely associated with insulin resistance and type 2 diabetes. Previous studies have suggested that hepatocyte nuclear factor 1b (HNF1b) ameliorates insulin resistance. However, the role of HNF1b in the regulation of lipid metabolism and hepatic steatosis remains poorly understood. We found that HNF1b expression was decreased in steatotic livers. We injected mice with lentivirus (LV) expressing HNF1b shRNA to generate mice with hepatic knockdown of HNF1b...
September 21, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28940454/choledochal-cyst-with-17q12-chromosomal-duplication
#17
Radana Kotalova, Petra Dusatkova, Jana Drabova, Lenka Elblova, Tomas Dedic, Ondrej Cinek, Jan Lebl, Stepanka Pruhova
The 17q12 chromosomal region carries the HNF1B gene, mutations of which cause various conditions. When searching for HNF1B/17q12 rearrangements among children with biliary atresia and/or choledochal cysts, we identified a male proband carrying a 17q12 duplication spanning 1698 kb that included 24 genes from TBC1D3C to HNF1B. The boy presented with cholestatic jaundice at the age of 2 weeks due to a choledochal cyst sized 15 ×12 mm (type Ia according to the Todani classification). He underwent a shunt surgery consisting of a hepaticojejunostomy using Roux-en-Y loop at the age of 2 months, which led to a permanent relief of cholestasis...
January 2018: Annals of Human Genetics
https://www.readbyqxmd.com/read/28881510/-clinical-phenotypes-of-hepatocyte-nuclear-factor-1-homeobox-b-associated-disease
#18
F Wang, Y Yao, H X Yang, C Y Shi, X X Zhang, H J Xiao, H W Zhang, B G Su, Y Q Zhang, J F Guo, J Ding
Objective: Hepatocyte nuclear factor 1 homeobox b (HNF1B) -associated disease is an autosomal dominant inherited disorder with a variable, multi-systemic phenotype. In China, five adult probands and one child proband with HNF1B-associated disease had been reported, whereas few fetuses are described. The aims of this retrospective study were to understand about the clinical manifestations of HNF1B-associated disease and to further improve the recognition of this disorder. Method: Four patients (3 males, 1 female) and three fetuses with HNF1B mutations were included in this study...
September 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28864900/expression-of-master-regulatory-genes-of-embryonic-development-in-pancreatic-tumors
#19
L G Kondratyeva, I P Chernov, M V Zinovyeva, E P Kopantzev, E D Sverdlov
The expression level of some important master regulators of embryonic development of the pancreas in the tumor samples of this human organ was determined. We found that the transcription of SOX9, GATA4, PDX1, PTF1a, and HNF1b genes in the tumor samples was reduced as compared to the samples of normal pancreatic tissues, and the KLF5 gene expression in the tumor cells was elevated. We assume that all the studied genes, except KLF5, form a single regulatory module that supports the identity of tumor progenitor cells...
July 2017: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28862987/mody-in-ukraine-genes-clinical-phenotypes-and-treatment
#20
Evgenia Globa, Nataliya Zelinska, Lenka Elblova, Petra Dusatkova, Ondrej Cinek, Jan Lebl, Kevin Colclough, Sian Ellard, Stepanka Pruhova
BACKGROUND: Maturity-onset diabetes of the young (MODY) has not been previously studied in Ukraine. We investigated the genetic etiology in a selected cohort of patients with diabetes diagnosed before 18 years of age, and in their family members. METHODS: Genetic testing of the most prevalent MODY genes (GCK, HNF1A, HNF4A, HNF1B and INS) was undertaken for 36 families (39 affected individuals) by Sanger or targeted next generation sequencing. RESULTS: A genetic diagnosis of MODY was made in 15/39 affected individuals from 12/36 families (33%)...
October 26, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
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