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Nature Genetics

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https://www.readbyqxmd.com/read/28092686/epigenomic-reprogramming-during-pancreatic-cancer-progression-links-anabolic-glucose-metabolism-to-distant-metastasis
#1
Oliver G McDonald, Xin Li, Tyler Saunders, Rakel Tryggvadottir, Samantha J Mentch, Marc O Warmoes, Anna E Word, Alessandro Carrer, Tal H Salz, Sonoko Natsume, Kimberly M Stauffer, Alvin Makohon-Moore, Yi Zhong, Hao Wu, Kathryn E Wellen, Jason W Locasale, Christine A Iacobuzio-Donahue, Andrew P Feinberg
During the progression of pancreatic ductal adenocarcinoma (PDAC), heterogeneous subclonal populations emerge that drive primary tumor growth, regional spread, distant metastasis, and patient death. However, the genetics of metastases largely reflects that of the primary tumor in untreated patients, and PDAC driver mutations are shared by all subclones. This raises the possibility that an epigenetic process might operate during metastasis. Here we report large-scale reprogramming of chromatin modifications during the natural evolution of distant metastasis...
January 16, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28092685/precision-oncology-for-acute-myeloid-leukemia-using-a-knowledge-bank-approach
#2
Moritz Gerstung, Elli Papaemmanuil, Inigo Martincorena, Lars Bullinger, Verena I Gaidzik, Peter Paschka, Michael Heuser, Felicitas Thol, Niccolo Bolli, Peter Ganly, Arnold Ganser, Ultan McDermott, Konstanze Döhner, Richard F Schlenk, Hartmut Döhner, Peter J Campbell
Underpinning the vision of precision medicine is the concept that causative mutations in a patient's cancer drive its biology and, by extension, its clinical features and treatment response. However, considerable between-patient heterogeneity in driver mutations complicates evidence-based personalization of cancer care. Here, by reanalyzing data from 1,540 patients with acute myeloid leukemia (AML), we explore how large knowledge banks of matched genomic-clinical data can support clinical decision-making. Inclusive, multistage statistical models accurately predicted likelihoods of remission, relapse and mortality, which were validated using data from independent patients in The Cancer Genome Atlas...
January 16, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28092684/biallelic-mutations-in-the-3-exonuclease-toe1-cause-pontocerebellar-hypoplasia-and-uncover-a-role-in-snrna-processing
#3
Rea M Lardelli, Ashleigh E Schaffer, Veerle R C Eggens, Maha S Zaki, Stephanie Grainger, Shashank Sathe, Eric L Van Nostrand, Zinayida Schlachetzki, Basak Rosti, Naiara Akizu, Eric Scott, Jennifer L Silhavy, Laura Dean Heckman, Rasim Ozgur Rosti, Esra Dikoglu, Anne Gregor, Alicia Guemez-Gamboa, Damir Musaev, Rohit Mande, Ari Widjaja, Tim L Shaw, Sebastian Markmiller, Isaac Marin-Valencia, Justin H Davies, Linda de Meirleir, Hulya Kayserili, Umut Altunoglu, Mary Louise Freckmann, Linda Warwick, David Chitayat, Susan Blaser, Ahmet Okay Çağlayan, Kaya Bilguvar, Huseyin Per, Christina Fagerberg, Henrik T Christesen, Maria Kibaek, Kimberly A Aldinger, David Manchester, Naomichi Matsumoto, Kazuhiro Muramatsu, Hirotomo Saitsu, Masaaki Shiina, Kazuhiro Ogata, Nicola Foulds, William B Dobyns, Neil C Chi, David Traver, Luigina Spaccini, Stefania Maria Bova, Stacey B Gabriel, Murat Gunel, Enza Maria Valente, Marie-Cecile Nassogne, Eric J Bennett, Gene W Yeo, Frank Baas, Jens Lykke-Andersen, Joseph G Gleeson
Deadenylases are best known for degrading the poly(A) tail during mRNA decay. The deadenylase family has expanded throughout evolution and, in mammals, consists of 12 Mg(2+)-dependent 3'-end RNases with substrate specificity that is mostly unknown. Pontocerebellar hypoplasia type 7 (PCH7) is a unique recessive syndrome characterized by neurodegeneration and ambiguous genitalia. We studied 12 human families with PCH7, uncovering biallelic, loss-of-function mutations in TOE1, which encodes an unconventional deadenylase...
January 16, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28092683/case-control-association-mapping-by-proxy-using-family-history-of-disease
#4
Jimmy Z Liu, Yaniv Erlich, Joseph K Pickrell
Collecting cases for case-control genetic association studies can be time-consuming and expensive. In some situations (such as studies of late-onset or rapidly lethal diseases), it may be more practical to identify family members of cases. In randomly ascertained cohorts, replacing cases with their first-degree relatives enables studies of diseases that are absent (or nearly absent) in the cohort. We refer to this approach as genome-wide association study by proxy (GWAX) and apply it to 12 common diseases in 116,196 individuals from the UK Biobank...
January 16, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28092682/limited-heterogeneity-of-known-driver-gene-mutations-among-the-metastases-of-individual-patients-with-pancreatic-cancer
#5
Alvin P Makohon-Moore, Ming Zhang, Johannes G Reiter, Ivana Bozic, Benjamin Allen, Deepanjan Kundu, Krishnendu Chatterjee, Fay Wong, Yuchen Jiao, Zachary A Kohutek, Jungeui Hong, Marc Attiyeh, Breanna Javier, Laura D Wood, Ralph H Hruban, Martin A Nowak, Nickolas Papadopoulos, Kenneth W Kinzler, Bert Vogelstein, Christine A Iacobuzio-Donahue
The extent of heterogeneity among driver gene mutations present in naturally occurring metastases-that is, treatment-naive metastatic disease-is largely unknown. To address this issue, we carried out 60× whole-genome sequencing of 26 metastases from four patients with pancreatic cancer. We found that identical mutations in known driver genes were present in every metastatic lesion for each patient studied. Passenger gene mutations, which do not have known or predicted functional consequences, accounted for all intratumoral heterogeneity...
January 16, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28092681/genomic-analysis-of-globally-diverse-mycobacterium-tuberculosis-strains-provides-insights-into-the-emergence-and-spread-of-multidrug-resistance
#6
Abigail L Manson, Keira A Cohen, Thomas Abeel, Christopher A Desjardins, Derek T Armstrong, Clifton E Barry, Jeannette Brand, Sinéad B Chapman, Sang-Nae Cho, Andrei Gabrielian, James Gomez, Andreea M Jodals, Moses Joloba, Pontus Jureen, Jong Seok Lee, Lesibana Malinga, Mamoudou Maiga, Dale Nordenberg, Ecaterina Noroc, Elena Romancenco, Alex Salazar, Willy Ssengooba, A A Velayati, Kathryn Winglee, Aksana Zalutskaya, Laura E Via, Gail H Cassell, Susan E Dorman, Jerrold Ellner, Parissa Farnia, James E Galagan, Alex Rosenthal, Valeriu Crudu, Daniela Homorodean, Po-Ren Hsueh, Sujatha Narayanan, Alexander S Pym, Alena Skrahina, Soumya Swaminathan, Martie Van der Walt, David Alland, William R Bishai, Ted Cohen, Sven Hoffner, Bruce W Birren, Ashlee M Earl
Multidrug-resistant tuberculosis (MDR-TB), caused by drug-resistant strains of Mycobacterium tuberculosis, is an increasingly serious problem worldwide. Here we examined a data set of whole-genome sequences from 5,310 M. tuberculosis isolates from five continents. Despite the great diversity of these isolates with respect to geographical point of isolation, genetic background and drug resistance, the patterns for the emergence of drug resistance were conserved globally. We have identified harbinger mutations that often precede multidrug resistance...
January 16, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28067913/impaired-h3k36-methylation-defines-a-subset-of-head-and-neck-squamous-cell-carcinomas
#7
Simon Papillon-Cavanagh, Chao Lu, Tenzin Gayden, Leonie G Mikael, Denise Bechet, Christina Karamboulas, Laurie Ailles, Jason Karamchandani, Dylan M Marchione, Benjamin A Garcia, Ilan Weinreb, David Goldstein, Peter W Lewis, Octavia Maria Dancu, Sandeep Dhaliwal, William Stecho, Christopher J Howlett, Joe S Mymryk, John W Barrett, Anthony C Nichols, C David Allis, Jacek Majewski, Nada Jabado
Human papillomavirus (HPV)-negative head and neck squamous cell carcinomas (HNSCCs) are deadly and common cancers. Recent genomic studies implicate multiple genetic pathways, including cell signaling, cell cycle and immune evasion, in their development. Here we analyze public data sets and uncover a previously unappreciated role of epigenome deregulation in the genesis of 13% of HPV-negative HNSCCs. Specifically, we identify novel recurrent mutations encoding p.Lys36Met (K36M) alterations in multiple H3 histone genes...
January 9, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28067912/genome-wide-association-study-identifies-distinct-genetic-contributions-to-prognosis-and-susceptibility-in-crohn-s-disease
#8
James C Lee, Daniele Biasci, Rebecca Roberts, Richard B Gearry, John C Mansfield, Tariq Ahmad, Natalie J Prescott, Jack Satsangi, David C Wilson, Luke Jostins, Carl A Anderson, James A Traherne, Paul A Lyons, Miles Parkes, Kenneth G C Smith
For most immune-mediated diseases, the main determinant of patient well-being is not the diagnosis itself but instead the course that the disease takes over time (prognosis). Prognosis may vary substantially between patients for reasons that are poorly understood. Familial studies support a genetic contribution to prognosis, but little evidence has been found for a proposed association between prognosis and the burden of susceptibility variants. To better characterize how genetic variation influences disease prognosis, we performed a within-cases genome-wide association study in two cohorts of patients with Crohn's disease...
January 9, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28067911/de-novo-mutations-in-smchd1-cause-bosma-arhinia-microphthalmia-syndrome-and-abrogate-nasal-development
#9
Christopher T Gordon, Shifeng Xue, Gökhan Yigit, Hicham Filali, Kelan Chen, Nadine Rosin, Koh-Ichiro Yoshiura, Myriam Oufadem, Tamara J Beck, Ruth McGowan, Alex C Magee, Janine Altmüller, Camille Dion, Holger Thiele, Alexandra D Gurzau, Peter Nürnberg, Dieter Meschede, Wolfgang Mühlbauer, Nobuhiko Okamoto, Vinod Varghese, Rachel Irving, Sabine Sigaudy, Denise Williams, S Faisal Ahmed, Carine Bonnard, Mung Kei Kong, Ilham Ratbi, Nawfal Fejjal, Meriem Fikri, Siham Chafai Elalaoui, Hallvard Reigstad, Christine Bole-Feysot, Patrick Nitschké, Nicola Ragge, Nicolas Lévy, Gökhan Tunçbilek, Audrey S M Teo, Michael L Cunningham, Abdelaziz Sefiani, Hülya Kayserili, James M Murphy, Chalermpong Chatdokmaiprai, Axel M Hillmer, Duangrurdee Wattanasirichaigoon, Stanislas Lyonnet, Frédérique Magdinier, Asif Javed, Marnie E Blewitt, Jeanne Amiel, Bernd Wollnik, Bruno Reversade
Bosma arhinia microphthalmia syndrome (BAMS) is an extremely rare and striking condition characterized by complete absence of the nose with or without ocular defects. We report here that missense mutations in the epigenetic regulator SMCHD1 mapping to the extended ATPase domain of the encoded protein cause BAMS in all 14 cases studied. All mutations were de novo where parental DNA was available. Biochemical tests and in vivo assays in Xenopus laevis embryos suggest that these mutations may behave as gain-of-function alleles...
January 9, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28067910/exploring-the-genetic-architecture-of-inflammatory-bowel-disease-by-whole-genome-sequencing-identifies-association-at-adcy7
#10
Yang Luo, Katrina M de Lange, Luke Jostins, Loukas Moutsianas, Joshua Randall, Nicholas A Kennedy, Christopher A Lamb, Shane McCarthy, Tariq Ahmad, Cathryn Edwards, Eva Goncalves Serra, Ailsa Hart, Chris Hawkey, John C Mansfield, Craig Mowat, William G Newman, Sam Nichols, Martin Pollard, Jack Satsangi, Alison Simmons, Mark Tremelling, Holm Uhlig, David C Wilson, James C Lee, Natalie J Prescott, Charlie W Lees, Christopher G Mathew, Miles Parkes, Jeffrey C Barrett, Carl A Anderson
To further resolve the genetic architecture of the inflammatory bowel diseases ulcerative colitis and Crohn's disease, we sequenced the whole genomes of 4,280 patients at low coverage and compared them to 3,652 previously sequenced population controls across 73.5 million variants. We then imputed from these sequences into new and existing genome-wide association study cohorts and tested for association at ∼12 million variants in a total of 16,432 cases and 18,843 controls. We discovered a 0.6% frequency missense variant in ADCY7 that doubles the risk of ulcerative colitis...
January 9, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28067909/smchd1-mutations-associated-with-a-rare-muscular-dystrophy-can-also-cause-isolated-arhinia-and-bosma-arhinia-microphthalmia-syndrome
#11
Natalie D Shaw, Harrison Brand, Zachary A Kupchinsky, Hemant Bengani, Lacey Plummer, Takako I Jones, Serkan Erdin, Kathleen A Williamson, Joe Rainger, Alexei Stortchevoi, Kaitlin Samocha, Benjamin B Currall, Donncha S Dunican, Ryan L Collins, Jason R Willer, Angela Lek, Monkol Lek, Malik Nassan, Shahrin Pereira, Tammy Kammin, Diane Lucente, Alexandra Silva, Catarina M Seabra, Colby Chiang, Yu An, Morad Ansari, Jacqueline K Rainger, Shelagh Joss, Jill Clayton Smith, Margaret F Lippincott, Sylvia S Singh, Nirav Patel, Jenny W Jing, Jennifer R Law, Nalton Ferraro, Alain Verloes, Anita Rauch, Katharina Steindl, Markus Zweier, Ianina Scheer, Daisuke Sato, Nobuhiko Okamoto, Christina Jacobsen, Jeanie Tryggestad, Steven Chernausek, Lisa A Schimmenti, Benjamin Brasseur, Claudia Cesaretti, Jose E García-Ortiz, Tatiana Pineda Buitrago, Orlando Perez Silva, Jodi D Hoffman, Wolfgang Mühlbauer, Klaus W Ruprecht, Bart L Loeys, Masato Shino, Angela M Kaindl, Chie-Hee Cho, Cynthia C Morton, Richard R Meehan, Veronica van Heyningen, Eric C Liao, Ravikumar Balasubramanian, Janet E Hall, Stephanie B Seminara, Daniel Macarthur, Steven A Moore, Koh-Ichiro Yoshiura, James F Gusella, Joseph A Marsh, John M Graham, Angela E Lin, Nicholas Katsanis, Peter L Jones, William F Crowley, Erica E Davis, David R FitzPatrick, Michael E Talkowski
Arhinia, or absence of the nose, is a rare malformation of unknown etiology that is often accompanied by ocular and reproductive defects. Sequencing of 40 people with arhinia revealed that 84% of probands harbor a missense mutation localized to a constrained region of SMCHD1 encompassing the ATPase domain. SMCHD1 mutations cause facioscapulohumeral muscular dystrophy type 2 (FSHD2) via a trans-acting loss-of-function epigenetic mechanism. We discovered shared mutations and comparable DNA hypomethylation patterning between these distinct disorders...
January 9, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28067908/genome-wide-association-study-implicates-immune-activation-of-multiple-integrin-genes-in-inflammatory-bowel-disease
#12
Katrina M de Lange, Loukas Moutsianas, James C Lee, Christopher A Lamb, Yang Luo, Nicholas A Kennedy, Luke Jostins, Daniel L Rice, Javier Gutierrez-Achury, Sun-Gou Ji, Graham Heap, Elaine R Nimmo, Cathryn Edwards, Paul Henderson, Craig Mowat, Jeremy Sanderson, Jack Satsangi, Alison Simmons, David C Wilson, Mark Tremelling, Ailsa Hart, Christopher G Mathew, William G Newman, Miles Parkes, Charlie W Lees, Holm Uhlig, Chris Hawkey, Natalie J Prescott, Tariq Ahmad, John C Mansfield, Carl A Anderson, Jeffrey C Barrett
Genetic association studies have identified 215 risk loci for inflammatory bowel disease, thereby uncovering fundamental aspects of its molecular biology. We performed a genome-wide association study of 25,305 individuals and conducted a meta-analysis with published summary statistics, yielding a total sample size of 59,957 subjects. We identified 25 new susceptibility loci, 3 of which contain integrin genes that encode proteins in pathways that have been identified as important therapeutic targets in inflammatory bowel disease...
January 9, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28024155/a-method-for-identifying-genetic-heterogeneity-within-phenotypically-defined-disease-subgroups
#13
James Liley, John A Todd, Chris Wallace
Many common diseases show wide phenotypic variation. We present a statistical method for determining whether phenotypically defined subgroups of disease cases represent different genetic architectures, in which disease-associated variants have different effect sizes in two subgroups. Our method models the genome-wide distributions of genetic association statistics with mixture Gaussians. We apply a global test without requiring explicit identification of disease-associated variants, thus maximizing power in comparison to standard variant-by-variant subgroup analysis...
December 26, 2016: Nature Genetics
https://www.readbyqxmd.com/read/28024154/robust-and-scalable-inference-of-population-history-from-hundreds-of-unphased-whole-genomes
#14
Jonathan Terhorst, John A Kamm, Yun S Song
It has recently been demonstrated that inference methods based on genealogical processes with recombination can uncover past population history in unprecedented detail. However, these methods scale poorly with sample size, limiting resolution in the recent past, and they require phased genomes, which contain switch errors that can catastrophically distort the inferred history. Here we present SMC++, a new statistical tool capable of analyzing orders of magnitude more samples than existing methods while requiring only unphased genomes (its results are independent of phasing)...
December 26, 2016: Nature Genetics
https://www.readbyqxmd.com/read/27992417/mutations-in-the-histone-methyltransferase-gene-kmt2b-cause-complex-early-onset-dystonia
#15
Esther Meyer, Keren J Carss, Julia Rankin, John M E Nichols, Detelina Grozeva, Agnel P Joseph, Niccolo E Mencacci, Apostolos Papandreou, Joanne Ng, Serena Barral, Adeline Ngoh, Hilla Ben-Pazi, Michel A Willemsen, David Arkadir, Angela Barnicoat, Hagai Bergman, Sanjay Bhate, Amber Boys, Niklas Darin, Nicola Foulds, Nicholas Gutowski, Alison Hills, Henry Houlden, Jane A Hurst, Zvi Israel, Margaret Kaminska, Patricia Limousin, Daniel Lumsden, Shane McKee, Shibalik Misra, Shekeeb S Mohammed, Vasiliki Nakou, Joost Nicolai, Magnus Nilsson, Hardev Pall, Kathryn J Peall, Gregory B Peters, Prab Prabhakar, Miriam S Reuter, Patrick Rump, Reeval Segel, Margje Sinnema, Martin Smith, Peter Turnpenny, Susan M White, Dagmar Wieczorek, Sarah Wiethoff, Brian T Wilson, Gidon Winter, Christopher Wragg, Simon Pope, Simon J H Heales, Deborah Morrogh, Alan Pittman, Lucinda J Carr, Belen Perez-Dueñas, Jean-Pierre Lin, Andre Reis, William A Gahl, Camilo Toro, Kailash P Bhatia, Nicholas W Wood, Erik-Jan Kamsteeg, Wui K Chong, Paul Gissen, Maya Topf, Russell C Dale, Jonathan R Chubb, F Lucy Raymond, Manju A Kurian
Histone lysine methylation, mediated by mixed-lineage leukemia (MLL) proteins, is now known to be critical in the regulation of gene expression, genomic stability, cell cycle and nuclear architecture. Despite MLL proteins being postulated as essential for normal development, little is known about the specific functions of the different MLL lysine methyltransferases. Here we report heterozygous variants in the gene KMT2B (also known as MLL4) in 27 unrelated individuals with a complex progressive childhood-onset dystonia, often associated with a typical facial appearance and characteristic brain magnetic resonance imaging findings...
December 19, 2016: Nature Genetics
https://www.readbyqxmd.com/read/27992416/genome-wide-association-analyses-of-sleep-disturbance-traits-identify-new-loci-and-highlight-shared-genetics-with-neuropsychiatric-and-metabolic-traits
#16
Jacqueline M Lane, Jingjing Liang, Irma Vlasac, Simon G Anderson, David A Bechtold, Jack Bowden, Richard Emsley, Shubhroz Gill, Max A Little, Annemarie I Luik, Andrew Loudon, Frank A J L Scheer, Shaun M Purcell, Simon D Kyle, Deborah A Lawlor, Xiaofeng Zhu, Susan Redline, David W Ray, Martin K Rutter, Richa Saxena
Chronic sleep disturbances, associated with cardiometabolic diseases, psychiatric disorders and all-cause mortality, affect 25-30% of adults worldwide. Although environmental factors contribute substantially to self-reported habitual sleep duration and disruption, these traits are heritable and identification of the genes involved should improve understanding of sleep, mechanisms linking sleep to disease and development of new therapies. We report single- and multiple-trait genome-wide association analyses of self-reported sleep duration, insomnia symptoms and excessive daytime sleepiness in the UK Biobank (n = 112,586)...
December 19, 2016: Nature Genetics
https://www.readbyqxmd.com/read/27992415/a-genome-wide-crispr-screen-identifies-a-restricted-set-of-hiv-host-dependency-factors
#17
Ryan J Park, Tim Wang, Dylan Koundakjian, Judd F Hultquist, Pedro Lamothe-Molina, Blandine Monel, Kathrin Schumann, Haiyan Yu, Kevin M Krupzcak, Wilfredo Garcia-Beltran, Alicja Piechocka-Trocha, Nevan J Krogan, Alexander Marson, David M Sabatini, Eric S Lander, Nir Hacohen, Bruce D Walker
Host proteins are essential for HIV entry and replication and can be important nonviral therapeutic targets. Large-scale RNA interference (RNAi)-based screens have identified nearly a thousand candidate host factors, but there is little agreement among studies and few factors have been validated. Here we demonstrate that a genome-wide CRISPR-based screen identifies host factors in a physiologically relevant cell system. We identify five factors, including the HIV co-receptors CD4 and CCR5, that are required for HIV infection yet are dispensable for cellular proliferation and viability...
December 19, 2016: Nature Genetics
https://www.readbyqxmd.com/read/27992414/dynamics-of-clonal-evolution-in-myelodysplastic-syndromes
#18
Hideki Makishima, Tetsuichi Yoshizato, Kenichi Yoshida, Mikkael A Sekeres, Tomas Radivoyevitch, Hiromichi Suzuki, Bartlomiej Przychodzen, Yasunobu Nagata, Manja Meggendorfer, Masashi Sanada, Yusuke Okuno, Cassandra Hirsch, Teodora Kuzmanovic, Yusuke Sato, Aiko Sato-Otsubo, Thomas LaFramboise, Naoko Hosono, Yuichi Shiraishi, Kenichi Chiba, Claudia Haferlach, Wolfgang Kern, Hiroko Tanaka, Yusuke Shiozawa, Inés Gómez-Seguí, Holleh D Husseinzadeh, Swapna Thota, Kathryn M Guinta, Brittney Dienes, Tsuyoshi Nakamaki, Shuichi Miyawaki, Yogen Saunthararajah, Shigeru Chiba, Satoru Miyano, Lee-Yung Shih, Torsten Haferlach, Seishi Ogawa, Jaroslaw P Maciejewski
To elucidate differential roles of mutations in myelodysplastic syndromes (MDS), we investigated clonal dynamics using whole-exome and/or targeted sequencing of 699 patients, of whom 122 were analyzed longitudinally. Including the results from previous reports, we assessed a total of 2,250 patients for mutational enrichment patterns. During progression, the number of mutations, their diversity and clone sizes increased, with alterations frequently present in dominant clones with or without their sweeping previous clones...
December 19, 2016: Nature Genetics
https://www.readbyqxmd.com/read/27992413/genome-wide-association-study-of-primary-sclerosing-cholangitis-identifies-new-risk-loci-and-quantifies-the-genetic-relationship-with-inflammatory-bowel-disease
#19
Sun-Gou Ji, Brian D Juran, Sören Mucha, Trine Folseraas, Luke Jostins, Espen Melum, Natsuhiko Kumasaka, Elizabeth J Atkinson, Erik M Schlicht, Jimmy Z Liu, Tejas Shah, Javier Gutierrez-Achury, Kirsten M Boberg, Annika Bergquist, Severine Vermeire, Bertus Eksteen, Peter R Durie, Martti Farkkila, Tobias Müller, Christoph Schramm, Martina Sterneck, Tobias J Weismüller, Daniel N Gotthardt, David Ellinghaus, Felix Braun, Andreas Teufel, Mattias Laudes, Wolfgang Lieb, Gunnar Jacobs, Ulrich Beuers, Rinse K Weersma, Cisca Wijmenga, Hanns-Ulrich Marschall, Piotr Milkiewicz, Albert Pares, Kimmo Kontula, Olivier Chazouillères, Pietro Invernizzi, Elizabeth Goode, Kelly Spiess, Carmel Moore, Jennifer Sambrook, Willem H Ouwehand, David J Roberts, John Danesh, Annarosa Floreani, Aliya F Gulamhusein, John E Eaton, Stefan Schreiber, Catalina Coltescu, Christopher L Bowlus, Velimir A Luketic, Joseph A Odin, Kapil B Chopra, Kris V Kowdley, Naga Chalasani, Michael P Manns, Brijesh Srivastava, George Mells, Richard N Sandford, Graeme Alexander, Daniel J Gaffney, Roger W Chapman, Gideon M Hirschfield, Mariza de Andrade, Simon M Rushbrook, Andre Franke, Tom H Karlsen, Konstantinos N Lazaridis, Carl A Anderson
Primary sclerosing cholangitis (PSC) is a rare progressive disorder leading to bile duct destruction; ∼75% of patients have comorbid inflammatory bowel disease (IBD). We undertook the largest genome-wide association study of PSC (4,796 cases and 19,955 population controls) and identified four new genome-wide significant loci. The most associated SNP at one locus affects splicing and expression of UBASH3A, with the protective allele (C) predicted to cause nonstop-mediated mRNA decay and lower expression of UBASH3A...
December 19, 2016: Nature Genetics
https://www.readbyqxmd.com/read/27941798/arid1a-loss-impairs-enhancer-mediated-gene-regulation-and-drives-colon-cancer-in-mice
#20
Radhika Mathur, Burak H Alver, Adrianna K San Roman, Boris G Wilson, Xiaofeng Wang, Agoston T Agoston, Peter J Park, Ramesh A Shivdasani, Charles W M Roberts
Genes encoding subunits of SWI/SNF (BAF) chromatin-remodeling complexes are collectively mutated in ∼20% of all human cancers. Although ARID1A is the most frequent target of mutations, the mechanism by which its inactivation promotes tumorigenesis is unclear. Here we demonstrate that Arid1a functions as a tumor suppressor in the mouse colon, but not the small intestine, and that invasive ARID1A-deficient adenocarcinomas resemble human colorectal cancer (CRC). These tumors lack deregulation of APC/β-catenin signaling components, which are crucial gatekeepers in common forms of intestinal cancer...
December 12, 2016: Nature Genetics
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