M
Mark Walker
Researcher at University of Ottawa
Publications - 690
Citations - 63950
Mark Walker is an academic researcher from University of Ottawa. The author has contributed to research in topics: Population & Pregnancy. The author has an hindex of 97, co-authored 622 publications receiving 58554 citations. Previous affiliations of Mark Walker include Newcastle University & Queen's University.
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Journal ArticleDOI
Mutation of ALMS1, a large gene with a tandem repeat encoding 47 amino acids, causes Alström syndrome.
Tom Hearn,Glenn L. Renforth,Cosma Spalluto,Neil A. Hanley,K Piper,S Brickwood,Chris White,Vincent Connolly,J F Taylor,Isabelle Russell-Eggitt,Dominique Bonneau,Mark Walker,David I. Wilson +12 more
TL;DR: Alström syndrome is believed to be the first human disease gene characterized by autosomal recessive inheritance to be identified as a result of a balanced reciprocal translocation and six different mutations were detected in seven families, confirming that ALMS1 is the gene underlying Alstr Öm syndrome.
Journal ArticleDOI
Genome-wide physical activity interactions in adiposity. A meta-analysis of 200,452 adults
Mariaelisa Graff,Robert A. Scott,Anne E. Justice,Kristin L. Young,Mary F. Feitosa,Llilda Barata,Thomas W. Winkler,Audrey Y. Chu,Audrey Y. Chu,Anubha Mahajan,David Hadley,Luting Xue,Luting Xue,Tsegaselassie Workalemahu,Nancy L. Heard-Costa,Nancy L. Heard-Costa,Marcel den Hoed,Marcel den Hoed,Tarunveer S. Ahluwalia,Tarunveer S. Ahluwalia,Qibin Qi,Julius S. Ngwa,Frida Renström,Frida Renström,Lydia Quaye,John D. Eicher,James E. Hayes,James E. Hayes,Marilyn C. Cornelis,Marilyn C. Cornelis,Marilyn C. Cornelis,Zoltán Kutalik,Zoltán Kutalik,Elise Lim,Jian'an Luan,Jennifer E. Huffman,Jennifer E. Huffman,Weihua Zhang,Weihua Zhang,Wei Zhao,Paula J. Griffin,Toomas Haller,Shafqat Ahmad,Pedro Marques-Vidal,Stephanie A. Bien,Loic Yengo,Alexander Teumer,Albert V. Smith,Meena Kumari,Marie Neergaard Harder,Johanne Marie Justesen,Marcus E. Kleber,Marcus E. Kleber,Mette Hollensted,Kurt Lohman,Natalia V. Rivera,John Whitfield,Jing Hua Zhao,Heather M. Stringham,Leo-Pekka Lyytikäinen,Charlotte Huppertz,Charlotte Huppertz,Gonneke Willemsen,Gonneke Willemsen,Wouter J. Peyrot,Ying Wu,Kati Kristiansson,Kati Kristiansson,Ayse Demirkan,Ayse Demirkan,Myriam Fornage,Maija Hassinen,Lawrence F. Bielak,Gemma Cadby,Toshiko Tanaka,Reedik Mägi,Peter J. van der Most,Anne U. Jackson,Jennifer L. Bragg-Gresham,Veronique Vitart,Jonathan Marten,Pau Navarro,Claire Bellis,Claire Bellis,Dorota Pasko,Åsa Johansson,Soren Snitker,Yu-Ching Cheng,Joel Eriksson,Unhee Lim,Mette Aadahl,Mette Aadahl,Linda S. Adair,Najaf Amin,Beverley Balkau,Juha Auvinen,Juha Auvinen,John Beilby,John Beilby,Richard N. Bergman,Sven Bergmann,Sven Bergmann,Alain G. Bertoni,John Blangero,Amélie Bonnefond,Lori L. Bonnycastle,Judith B. Borja,Soren Brage,Fabio Busonero,Steve Buyske,Harry Campbell,Peter S. Chines,Francis S. Collins,Tanguy Corre,Tanguy Corre,George Davey Smith,Graciela E. Delgado,Nicole Dueker,Marcus Dörr,Tapani Ebeling,Tapani Ebeling,Gudny Eiriksdottir,Tõnu Esko,Jessica D. Faul,Mao Fu,Kristine Færch,Christian Gieger,Sven Gläser,Jian Gong,Penny Gordon-Larsen,Harald Grallert,Tanja B. Grammer,Niels Grarup,Gerard van Grootheest,Kennet Harald,Nicholas D. Hastie,Aki S. Havulinna,Dena G. Hernandez,Lucia A. Hindorff,Lynne J. Hocking,Lynne J. Hocking,Oddgeir L. Holmens,Christina Holzapfel,Jouke-Jan Hottenga,Jie Huang,Tao Huang,Jennie Hui,Jennie Hui,Cornelia Huth,Nina Hutri-Kähönen,Alan James,Alan James,John-Olov Jansson,Min A. Jhun,Markus Juonala,Markus Juonala,Leena Kinnunen,Heikki A. Koistinen,Heikki A. Koistinen,Heikki A. Koistinen,Ivana Kolcic,Pirjo Komulainen,Johanna Kuusisto,Kirsti Kvaløy,Mika Kähönen,Timo A. Lakka,Lenore J. Launer,Benjamin Lehne,Cecilia M. Lindgren,Cecilia M. Lindgren,Cecilia M. Lindgren,Mattias Lorentzon,Mattias Lorentzon,Robert Luben,Michel Marre,Yuri Milaneschi,Keri L. Monda,Keri L. Monda,Grant W. Montgomery,Marleen H.M. de Moor,Marleen H.M. de Moor,Antonella Mulas,Martina Müller-Nurasyid,Arthur W. Musk,Arthur W. Musk,Reija Männikkö,Satu Männistö,Narisu Narisu,Matthias Nauck,Jennifer A. Nettleton,Ilja M. Nolte,Albertine J. Oldehinkel,Matthias Olden,Ken K. Ong,Sandosh Padmanabhan,Sandosh Padmanabhan,Lavinia Paternoster,Jeremiah Perez,Markus Perola,Markus Perola,Markus Perola,Annette Peters,Ulrike Peters,Patricia A. Peyser,Inga Prokopenko,Hannu Puolijoki,Olli T. Raitakari,Olli T. Raitakari,Tuomo Rankinen,Laura J. Rasmussen-Torvik,Rajesh Rawal,Paul M. Ridker,Paul M. Ridker,Lynda M. Rose,Igor Rudan,Cinzia Sarti,Mark A. Sarzynski,Kai Savonen,William R. Scott,Serena Sanna,Alan R. Shuldiner,Steve Sidney,Günther Silbernagel,Blair H. Smith,Blair H. Smith,Jennifer A. Smith,Harold Snieder,Alena Stančáková,Barbara Sternfeld,Amy J. Swift,Tuija Tammelin,Sian-Tsung Tan,Barbara Thorand,Dorothée Thuillier,Liesbeth Vandenput,Henrik Vestergaard,Henrik Vestergaard,Jana V. van Vliet-Ostaptchouk,Marie-Claude Vohl,Uwe Völker,Gérard Waeber,Mark Walker,Sarah H. Wild,Andrew Wong,Alan F. Wright,M. Carola Zillikens,Niha Zubair,Christopher A. Haiman,Loic LeMarchand,Ulf Gyllensten,Claes Ohlsson,Albert Hofman,Albert Hofman,Fernando Rivadeneira,Fernando Rivadeneira,André G. Uitterlinden,Louis Pérusse,James F. Wilson,Caroline Hayward,Ozren Polasek,Francesco Cucca,Kristian Hveem,Catharina A. Hartman,Anke Tönjes,Stefania Bandinelli,Lyle J. Palmer,Sharon L.R. Kardia,Rainer Rauramaa,Thorkild I. A. Sørensen,Jaakko Tuomilehto,Jaakko Tuomilehto,Jaakko Tuomilehto,Veikko Salomaa,Brenda W.J.H. Penninx,Eco J. C. de Geus,Eco J. C. de Geus,Dorret I. Boomsma,Terho Lehtimäki,Massimo Mangino,Massimo Mangino,Markku Laakso,Claude Bouchard,Nicholas G. Martin,Diana Kuh,Yongmei Liu,Allan Linneberg,Allan Linneberg,Winfried März,Winfried März,Winfried März,Konstantin Strauch,Mika Kivimäki,Tamara B. Harris,Vilmundur Gudnason,Henry Völzke,Lu Qi,Marjo-Riitta Järvelin,John C. Chambers,John C. Chambers,John C. Chambers,Jaspal S. Kooner,Jaspal S. Kooner,Jaspal S. Kooner,Philippe Froguel,Philippe Froguel,Charles Kooperberg,Peter Vollenweider,Göran Hallmans,Torben Hansen,Oluf Pedersen,Andres Metspalu,Nicholas J. Wareham,Claudia Langenberg,David R. Weir,David J. Porteous,Eric Boerwinkle,Daniel I. Chasman,Daniel I. Chasman,Daniel I. Chasman,Gonçalo R. Abecasis,Inês Barroso,Inês Barroso,Mark I. McCarthy,Mark I. McCarthy,Timothy M. Frayling,Jeffrey R. O'Connell,Cornelia M. van Duijn,Cornelia M. van Duijn,Michael Boehnke,Iris M. Heid,Karen L. Mohlke,David P. Strachan,Caroline S. Fox,Ching-Ti Liu,Joel N. Hirschhorn,Joel N. Hirschhorn,Joel N. Hirschhorn,Robert J. Klein,Andrew D. Johnson,Ingrid B. Borecki,Paul W. Franks,Paul W. Franks,Paul W. Franks,Kari E. North,L. Adrienne Cupples,L. Adrienne Cupples,Ruth J. F. Loos,Tuomas O. Kilpeläinen,Tuomas O. Kilpeläinen,Tuomas O. Kilpeläinen +349 more
TL;DR: In additional genome-wide meta-analyses adjusting for PA and interaction with PA, 11 novel adiposity loci are identified, suggesting that accounting for PA or other environmental factors that contribute to variation in adiposity may facilitate gene discovery.
Journal ArticleDOI
Association analysis of 6,736 U.K. subjects provides replication and confirms TCF7L2 as a type 2 diabetes susceptibility gene with a substantial effect on individual risk.
C J Groves,Eleftheria Zeggini,Eleftheria Zeggini,Jayne A. L. Minton,Timothy M. Frayling,Michael N. Weedon,N W Rayner,N W Rayner,Graham A. Hitman,Mark Walker,Steven Wiltshire,Andrew T. Hattersley,Mark I. McCarthy,Mark I. McCarthy +13 more
TL;DR: The overall evidence for association for these variants exceeds genome-wide significance criteria and clearly establishes TCF7L2 as a type 2 diabetes susceptibility gene of substantial importance.
Journal ArticleDOI
Combining information from common type 2 diabetes risk polymorphisms improves disease prediction
Michael N. Weedon,Mark I. McCarthy,Graham A. Hitman,Mark Walker,C J Groves,Eleftheria Zeggini,N. William Rayner,Beverley M. Shields,Katharine R. Owen,Andrew T. Hattersley,Timothy M. Frayling +10 more
TL;DR: Combining information from several known common risk polymorphisms allows the identification of population subgroups with markedly differing risks of developing type 2 diabetes compared to those obtained using single polymorphisms.
Journal ArticleDOI
Chk1 Is Required for Spindle Checkpoint Function
George Zachos,Elizabeth J. Black,Mark Walker,Mary T. Scott,Paola Vagnarelli,William C. Earnshaw,David A. F. Gillespie +6 more
TL;DR: It is proposed that Chk1 augments spindle checkpoint signaling and is required for optimal regulation of Aurora-B and BubR1 when kinetochores produce a weakened signal.