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19 results on '"Shapour Jalilzadeh"'

1. When is an SNP not an SNP?

Author

Shapour Jalilzadeh, Valerie Walker, Gary P Leggatt, and Eli Hatchwell

Subjects
genotype, in silico, PCR, pseudogene, Sanger sequencing, segmental duplication, Biology (General), QH301-705.5
Abstract

Genomic duplications are important sources of structural change and gene innovation. In humans, the most recent and highly identical sequences (>90% homology, >1 kb long) are known as segmental duplications (SDs). Single-nucleotide variants or single-nucleotide polymorphisms within SDs have not been systematically assessed due to limitations around mapping short-read sequencing data. Single-nucleotide variant rs62486260 was flagged in a study of familial renal stone disease but it was unclear whether it was real or an artifact resulting from the presence of a SD. We describe in silico and wet-lab approaches to investigate this, using segment-specific long-PCR assays, followed by short PCR for Sanger sequencing. Our conclusion was that rs62486260 is an artifact. Our approach can be generalized to deal with other such situations.

Published
2024
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2. Progressive multifocal leukoencephalopathy genetic risk variants for pharmacovigilance of immunosuppressant therapies

Author

Eli Hatchwell, Edward B. Smith, Shapour Jalilzadeh, Christopher D. Bruno, Yassine Taoufik, Houria Hendel-Chavez, Roland Liblau, David Brassat, Guillaume Martin-Blondel, Heinz Wiendl, Nicholas Schwab, Irene Cortese, Maria Chiara Monaco, Luisa Imberti, Ruggero Capra, Jorge R. Oksenberg, Jacques Gasnault, Bruno Stankoff, Todd A. Richmond, David M. Rancour, Igor J. Koralnik, Barbara A. Hanson, Eugene O. Major, Christina R. Chow, and Peggy S. Eis

Subjects
immunodeficiency, JC virus, multiple sclerosis, natalizumab, pharmacovigilance, progressive multifocal leukoencephalopathy, Neurology. Diseases of the nervous system, RC346-429
Abstract

BackgroundProgressive multifocal leukoencephalopathy (PML) is a rare and often lethal brain disorder caused by the common, typically benign polyomavirus 2, also known as JC virus (JCV). In a small percentage of immunosuppressed individuals, JCV is reactivated and infects the brain, causing devastating neurological defects. A wide range of immunosuppressed groups can develop PML, such as patients with: HIV/AIDS, hematological malignancies (e.g., leukemias, lymphomas, and multiple myeloma), autoimmune disorders (e.g., psoriasis, rheumatoid arthritis, and systemic lupus erythematosus), and organ transplants. In some patients, iatrogenic (i.e., drug-induced) PML occurs as a serious adverse event from exposure to immunosuppressant therapies used to treat their disease (e.g., hematological malignancies and multiple sclerosis). While JCV infection and immunosuppression are necessary, they are not sufficient to cause PML.MethodsWe hypothesized that patients may also have a genetic susceptibility from the presence of rare deleterious genetic variants in immune-relevant genes (e.g., those that cause inborn errors of immunity). In our prior genetic study of 184 PML cases, we discovered 19 candidate PML risk variants. In the current study of another 152 cases, we validated 4 of 19 variants in both population controls (gnomAD 3.1) and matched controls (JCV+ multiple sclerosis patients on a PML-linked drug ≥ 2 years).ResultsThe four variants, found in immune system genes with strong biological links, are: C8B, 1-57409459-C-A, rs139498867; LY9 (alias SLAMF3), 1-160769595-AG-A, rs763811636; FCN2, 9-137779251-G-A, rs76267164; STXBP2, 19-7712287-G-C, rs35490401. Carriers of any one of these variants are shown to be at high risk of PML when drug-exposed PML cases are compared to drug-exposed matched controls: P value = 3.50E-06, OR = 8.7 [3.7–20.6]. Measures of clinical validity and utility compare favorably to other genetic risk tests, such as BRCA1 and BRCA2 screening for breast cancer risk and HLA-B*15:02 pharmacogenetic screening for pharmacovigilance of carbamazepine to prevent Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis.ConclusionFor the first time, a PML genetic risk test can be implemented for screening patients taking or considering treatment with a PML-linked drug in order to decrease the incidence of PML and enable safer use of highly effective therapies used to treat their underlying disease.

Published
2022
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3. A principal component meta-analysis on multiple anthropometric traits identifies novel loci for body shape

Author

Janina S. Ried, Janina Jeff M., Audrey Y. Chu, Jennifer L. Bragg-Gresham, Jenny van Dongen, Jennifer E. Huffman, Tarunveer S. Ahluwalia, Gemma Cadby, Niina Eklund, Joel Eriksson, Tõnu Esko, Mary F. Feitosa, Anuj Goel, Mathias Gorski, Caroline Hayward, Nancy L. Heard-Costa, Anne U. Jackson, Eero Jokinen, Stavroula Kanoni, Kati Kristiansson, Zoltán Kutalik, Jari Lahti, Jian'an Luan, Reedik Mägi, Anubha Mahajan, Massimo Mangino, Carolina Medina-Gomez, Keri L. Monda, Ilja M. Nolte, Louis Pérusse, Inga Prokopenko, Lu Qi, Lynda M. Rose, Erika Salvi, Megan T. Smith, Harold Snieder, Alena Stančáková, Yun Ju Sung, Ioanna Tachmazidou, Alexander Teumer, Gudmar Thorleifsson, Pim van der Harst, Ryan W. Walker, Sophie R. Wang, Sarah H. Wild, Sara M. Willems, Andrew Wong, Weihua Zhang, Eva Albrecht, Alexessander Couto Alves, Stephan J. L. Bakker, Cristina Barlassina, Traci M. Bartz, John Beilby, Claire Bellis, Richard N. Bergman, Sven Bergmann, John Blangero, Matthias Blüher, Eric Boerwinkle, Lori L. Bonnycastle, Stefan R. Bornstein, Marcel Bruinenberg, Harry Campbell, Yii-Der Ida Chen, Charleston W. K. Chiang, Peter S. Chines, Francis S Collins, Fracensco Cucca, L Adrienne Cupples, Francesca D’Avila, Eco J .C. de Geus, George Dedoussis, Maria Dimitriou, Angela Döring, Johan G. Eriksson, Aliki-Eleni Farmaki, Martin Farrall, Teresa Ferreira, Krista Fischer, Nita G. Forouhi, Nele Friedrich, Anette Prior Gjesing, Nicola Glorioso, Mariaelisa Graff, Harald Grallert, Niels Grarup, Jürgen Gräßler, Jagvir Grewal, Anders Hamsten, Marie Neergaard Harder, Catharina A. Hartman, Maija Hassinen, Nicholas Hastie, Andrew Tym Hattersley, Aki S. Havulinna, Markku Heliövaara, Hans Hillege, Albert Hofman, Oddgeir Holmen, Georg Homuth, Jouke-Jan Hottenga, Jennie Hui, Lise Lotte Husemoen, Pirro G. Hysi, Aaron Isaacs, Till Ittermann, Shapour Jalilzadeh, Alan L. James, Torben Jørgensen, Pekka Jousilahti, Antti Jula, Johanne Marie Justesen, Anne E. Justice, Mika Kähönen, Maria Karaleftheri, Kay Tee Khaw, Sirkka M. Keinanen-Kiukaanniemi, Leena Kinnunen, Paul B. Knekt, Heikki A. Koistinen, Ivana Kolcic, Ishminder K. Kooner, Seppo Koskinen, Peter Kovacs, Theodosios Kyriakou, Tomi Laitinen, Claudia Langenberg, Alexandra M. Lewin, Peter Lichtner, Cecilia M. Lindgren, Jaana Lindström, Allan Linneberg, Roberto Lorbeer, Mattias Lorentzon, Robert Luben, Valeriya Lyssenko, Satu Männistö, Paolo Manunta, Irene Mateo Leach, Wendy L. McArdle, Barbara Mcknight, Karen L. Mohlke, Evelin Mihailov, Lili Milani, Rebecca Mills, May E. Montasser, Andrew P. Morris, Gabriele Müller, Arthur W. Musk, Narisu Narisu, Ken K. Ong, Ben A. Oostra, Clive Osmond, Aarno Palotie, James S. Pankow, Lavinia Paternoster, Brenda W. Penninx, Irene Pichler, Maria G. Pilia, Ozren Polašek, Peter P. Pramstaller, Olli T Raitakari, Tuomo Rankinen, D. C. Rao, Nigel W. Rayner, Rasmus Ribel-Madsen, Treva K. Rice, Marcus Richards, Paul M. Ridker, Fernando Rivadeneira, Kathy A. Ryan, Serena Sanna, Mark A. Sarzynski, Salome Scholtens, Robert A. Scott, Sylvain Sebert, Lorraine Southam, Thomas Hempel Sparsø, Valgerdur Steinthorsdottir, Kathleen Stirrups, Ronald P. Stolk, Konstantin Strauch, Heather M. Stringham, Morris A. Swertz, Amy J. Swift, Anke Tönjes, Emmanouil Tsafantakis, Peter J. van der Most, Jana V. Van Vliet-Ostaptchouk, Liesbeth Vandenput, Erkki Vartiainen, Cristina Venturini, Niek Verweij, Jorma S. Viikari, Veronique Vitart, Marie-Claude Vohl, Judith M. Vonk, Gérard Waeber, Elisabeth Widén, Gonneke Willemsen, Tom Wilsgaard, Thomas W. Winkler, Alan F. Wright, Laura M. Yerges-Armstrong, Jing Hua Zhao, M. Carola Zillikens, Dorret I. Boomsma, Claude Bouchard, John C. Chambers, Daniel I. Chasman, Daniele Cusi, Ron T. Gansevoort, Christian Gieger, Torben Hansen, Andrew A. Hicks, Frank Hu, Kristian Hveem, Marjo-Riitta Jarvelin, Eero Kajantie, Jaspal S. Kooner, Diana Kuh, Johanna Kuusisto, Markku Laakso, Timo A. Lakka, Terho Lehtimäki, Andres Metspalu, Inger Njølstad, Claes Ohlsson, Albertine J. Oldehinkel, Lyle J. Palmer, Oluf Pedersen, Markus Perola, Annette Peters, Bruce M. Psaty, Hannu Puolijoki, Rainer Rauramaa, Igor Rudan, Veikko Salomaa, Peter E. H. Schwarz, Alan R. Shudiner, Jan H. Smit, Thorkild I. A. Sørensen, Timothy D. Spector, Kari Stefansson, Michael Stumvoll, Angelo Tremblay, Jaakko Tuomilehto, André G. Uitterlinden, Matti Uusitupa, Uwe Völker, Peter Vollenweider, Nicholas J. Wareham, Hugh Watkins, James F. Wilson, Eleftheria Zeggini, Goncalo R. Abecasis, Michael Boehnke, Ingrid B. Borecki, Panos Deloukas, Cornelia M. van Duijn, Caroline Fox, Leif C. Groop, Iris M. Heid, David J. Hunter, Robert C. Kaplan, Mark I. McCarthy, Kari E. North, Jeffrey R. O'Connell, David Schlessinger, Unnur Thorsteinsdottir, David P. Strachan, Timothy Frayling, Joel N. Hirschhorn, Martina Müller-Nurasyid, and Ruth J. F. Loos

Subjects
Science
Abstract

Past genome-wide associate studies have identified hundreds of genetic loci that influence body size and shape when examined one trait at a time. Here, Jeff and colleagues develop an aggregate score of various body traits, and use meta-analysis to find new loci linked to body shape.

Published
2016
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4. Correction: The Influence of Age and Sex on Genetic Associations with Adult Body Size and Shape: A Large-Scale Genome-Wide Interaction Study.

Author

Thomas W Winkler, Anne E Justice, Mariaelisa Graff, Llilda Barata, Mary F Feitosa, Su Chu, Jacek Czajkowski, Tõnu Esko, Tove Fall, Tuomas O Kilpeläinen, Yingchang Lu, Reedik Mägi, Evelin Mihailov, Tune H Pers, Sina Rüeger, Alexander Teumer, Georg B Ehret, Teresa Ferreira, Nancy L Heard-Costa, Juha Karjalainen, Vasiliki Lagou, Anubha Mahajan, Michael D Neinast, Inga Prokopenko, Jeannette Simino, Tanya M Teslovich, Rick Jansen, Harm-Jan Westra, Charles C White, Devin Absher, Tarunveer S Ahluwalia, Shafqat Ahmad, Eva Albrecht, Alexessander Couto Alves, Jennifer L Bragg-Gresham, Anton J M de Craen, Joshua C Bis, Amélie Bonnefond, Gabrielle Boucher, Gemma Cadby, Yu-Ching Cheng, Charleston W K Chiang, Graciela Delgado, Ayse Demirkan, Nicole Dueker, Niina Eklund, Gudny Eiriksdottir, Joel Eriksson, Bjarke Feenstra, Krista Fischer, Francesca Frau, Tessel E Galesloot, Frank Geller, Anuj Goel, Mathias Gorski, Tanja B Grammer, Stefan Gustafsson, Saskia Haitjema, Jouke-Jan Hottenga, Jennifer E Huffman, Anne U Jackson, Kevin B Jacobs, Åsa Johansson, Marika Kaakinen, Marcus E Kleber, Jari Lahti, Irene Mateo Leach, Benjamin Lehne, Youfang Liu, Ken Sin Lo, Mattias Lorentzon, Jian'an Luan, Pamela A F Madden, Massimo Mangino, Barbara McKnight, Carolina Medina-Gomez, Keri L Monda, May E Montasser, Gabriele Müller, Martina Müller-Nurasyid, Ilja M Nolte, Kalliope Panoutsopoulou, Laura Pascoe, Lavinia Paternoster, Nigel W Rayner, Frida Renström, Federica Rizzi, Lynda M Rose, Kathy A Ryan, Perttu Salo, Serena Sanna, Hubert Scharnagl, Jianxin Shi, Albert Vernon Smith, Lorraine Southam, Alena Stančáková, Valgerdur Steinthorsdottir, Rona J Strawbridge, Yun Ju Sung, Ioanna Tachmazidou, Toshiko Tanaka, Gudmar Thorleifsson, Stella Trompet, Natalia Pervjakova, Jonathan P Tyrer, Liesbeth Vandenput, Sander W van der Laan, Nathalie van der Velde, Jessica van Setten, Jana V van Vliet-Ostaptchouk, Niek Verweij, Efthymia Vlachopoulou, Lindsay L Waite, Sophie R Wang, Zhaoming Wang, Sarah H Wild, Christina Willenborg, James F Wilson, Andrew Wong, Jian Yang, Loïc Yengo, Laura M Yerges-Armstrong, Lei Yu, Weihua Zhang, Jing Hua Zhao, Ehm A Andersson, Stephan J L Bakker, Damiano Baldassarre, Karina Banasik, Matteo Barcella, Cristina Barlassina, Claire Bellis, Paola Benaglio, John Blangero, Matthias Blüher, Fabrice Bonnet, Lori L Bonnycastle, Heather A Boyd, Marcel Bruinenberg, Aron S Buchman, Harry Campbell, Yii-Der Ida Chen, Peter S Chines, Simone Claudi-Boehm, John Cole, Francis S Collins, Eco J C de Geus, Lisette C P G M de Groot, Maria Dimitriou, Jubao Duan, Stefan Enroth, Elodie Eury, Aliki-Eleni Farmaki, Nita G Forouhi, Nele Friedrich, Pablo V Gejman, Bruna Gigante, Nicola Glorioso, Alan S Go, Omri Gottesman, Jürgen Gräßler, Harald Grallert, Niels Grarup, Yu-Mei Gu, Linda Broer, Annelies C Ham, Torben Hansen, Tamara B Harris, Catharina A Hartman, Maija Hassinen, Nicholas Hastie, Andrew T Hattersley, Andrew C Heath, Anjali K Henders, Dena Hernandez, Hans Hillege, Oddgeir Holmen, Kees G Hovingh, Jennie Hui, Lise L Husemoen, Nina Hutri-Kähönen, Pirro G Hysi, Thomas Illig, Philip L De Jager, Shapour Jalilzadeh, Torben Jørgensen, J Wouter Jukema, Markus Juonala, Stavroula Kanoni, Maria Karaleftheri, Kay Tee Khaw, Leena Kinnunen, Steven J Kittner, Wolfgang Koenig, Ivana Kolcic, Peter Kovacs, Nikolaj T Krarup, Wolfgang Kratzer, Janine Krüger, Diana Kuh, Meena Kumari, Theodosios Kyriakou, Claudia Langenberg, Lars Lannfelt, Chiara Lanzani, Vaneet Lotay, Lenore J Launer, Karin Leander, Jaana Lindström, Allan Linneberg, Yan-Ping Liu, Stéphane Lobbens, Robert Luben, Valeriya Lyssenko, Satu Männistö, Patrik K Magnusson, Wendy L McArdle, Cristina Menni, Sigrun Merger, Lili Milani, Grant W Montgomery, Andrew P Morris, Narisu Narisu, Mari Nelis, Ken K Ong, Aarno Palotie, Louis Pérusse, Irene Pichler, Maria G Pilia, Anneli Pouta, Myriam Rheinberger, Rasmus Ribel-Madsen, Marcus Richards, Kenneth M Rice, Treva K Rice, Carlo Rivolta, Veikko Salomaa, Alan R Sanders, Mark A Sarzynski, Salome Scholtens, Robert A Scott, William R Scott, Sylvain Sebert, Sebanti Sengupta, Bengt Sennblad, Thomas Seufferlein, Angela Silveira, P Eline Slagboom, Jan H Smit, Thomas H Sparsø, Kathleen Stirrups, Ronald P Stolk, Heather M Stringham, Morris A Swertz, Amy J Swift, Ann-Christine Syvänen, Sian-Tsung Tan, Barbara Thorand, Anke Tönjes, Angelo Tremblay, Emmanouil Tsafantakis, Peter J van der Most, Uwe Völker, Marie-Claude Vohl, Judith M Vonk, Melanie Waldenberger, Ryan W Walker, Roman Wennauer, Elisabeth Widén, Gonneke Willemsen, Tom Wilsgaard, Alan F Wright, M Carola Zillikens, Suzanne C van Dijk, Natasja M van Schoor, Folkert W Asselbergs, Paul I W de Bakker, Jacques S Beckmann, John Beilby, David A Bennett, Richard N Bergman, Sven Bergmann, Carsten A Böger, Bernhard O Boehm, Eric Boerwinkle, Dorret I Boomsma, Stefan R Bornstein, Erwin P Bottinger, Claude Bouchard, John C Chambers, Stephen J Chanock, Daniel I Chasman, Francesco Cucca, Daniele Cusi, George Dedoussis, Jeanette Erdmann, Johan G Eriksson, Denis A Evans, Ulf de Faire, Martin Farrall, Luigi Ferrucci, Ian Ford, Lude Franke, Paul W Franks, Philippe Froguel, Ron T Gansevoort, Christian Gieger, Henrik Grönberg, Vilmundur Gudnason, Ulf Gyllensten, Per Hall, Anders Hamsten, Pim van der Harst, Caroline Hayward, Markku Heliövaara, Christian Hengstenberg, Andrew A Hicks, Aroon Hingorani, Albert Hofman, Frank Hu, Heikki V Huikuri, Kristian Hveem, Alan L James, Joanne M Jordan, Antti Jula, Mika Kähönen, Eero Kajantie, Sekar Kathiresan, Lambertus A L M Kiemeney, Mika Kivimaki, Paul B Knekt, Heikki A Koistinen, Jaspal S Kooner, Seppo Koskinen, Johanna Kuusisto, Winfried Maerz, Nicholas G Martin, Markku Laakso, Timo A Lakka, Terho Lehtimäki, Guillaume Lettre, Douglas F Levinson, Lars Lind, Marja-Liisa Lokki, Pekka Mäntyselkä, Mads Melbye, Andres Metspalu, Braxton D Mitchell, Frans L Moll, Jeffrey C Murray, Arthur W Musk, Markku S Nieminen, Inger Njølstad, Claes Ohlsson, Albertine J Oldehinkel, Ben A Oostra, Lyle J Palmer, James S Pankow, Gerard Pasterkamp, Nancy L Pedersen, Oluf Pedersen, Brenda W Penninx, Markus Perola, Annette Peters, Ozren Polašek, Peter P Pramstaller, Bruce M Psaty, Lu Qi, Thomas Quertermous, Olli T Raitakari, Tuomo Rankinen, Rainer Rauramaa, Paul M Ridker, John D Rioux, Fernando Rivadeneira, Jerome I Rotter, Igor Rudan, Hester M den Ruijter, Juha Saltevo, Naveed Sattar, Heribert Schunkert, Peter E H Schwarz, Alan R Shuldiner, Juha Sinisalo, Harold Snieder, Thorkild I A Sørensen, Tim D Spector, Jan A Staessen, Bandinelli Stefania, Unnur Thorsteinsdottir, Michael Stumvoll, Jean-Claude Tardif, Elena Tremoli, Jaakko Tuomilehto, André G Uitterlinden, Matti Uusitupa, André L M Verbeek, Sita H Vermeulen, Jorma S Viikari, Veronique Vitart, Henry Völzke, Peter Vollenweider, Gérard Waeber, Mark Walker, Henri Wallaschofski, Nicholas J Wareham, Hugh Watkins, Eleftheria Zeggini, arcOGEN Consortium, CHARGE Consortium, DIAGRAM Consortium, GLGC Consortium, Global-BPGen Consortium, ICBP Consortium, MAGIC Consortium, Aravinda Chakravarti, Deborah J Clegg, L Adrienne Cupples, Penny Gordon-Larsen, Cashell E Jaquish, D C Rao, Goncalo R Abecasis, Themistocles L Assimes, Inês Barroso, Sonja I Berndt, Michael Boehnke, Panos Deloukas, Caroline S Fox, Leif C Groop, David J Hunter, Erik Ingelsson, Robert C Kaplan, Mark I McCarthy, Karen L Mohlke, Jeffrey R O'Connell, David Schlessinger, David P Strachan, Kari Stefansson, Cornelia M van Duijn, Joel N Hirschhorn, Cecilia M Lindgren, Iris M Heid, Kari E North, Ingrid B Borecki, Zoltán Kutalik, and Ruth J F Loos

Subjects
Genetics, QH426-470
Abstract

[This corrects the article DOI: 10.1371/journal.pgen.1005378.].

Published
2016
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5. The Influence of Age and Sex on Genetic Associations with Adult Body Size and Shape: A Large-Scale Genome-Wide Interaction Study.

Author

Thomas W Winkler, Anne E Justice, Mariaelisa Graff, Llilda Barata, Mary F Feitosa, Su Chu, Jacek Czajkowski, Tõnu Esko, Tove Fall, Tuomas O Kilpeläinen, Yingchang Lu, Reedik Mägi, Evelin Mihailov, Tune H Pers, Sina Rüeger, Alexander Teumer, Georg B Ehret, Teresa Ferreira, Nancy L Heard-Costa, Juha Karjalainen, Vasiliki Lagou, Anubha Mahajan, Michael D Neinast, Inga Prokopenko, Jeannette Simino, Tanya M Teslovich, Rick Jansen, Harm-Jan Westra, Charles C White, Devin Absher, Tarunveer S Ahluwalia, Shafqat Ahmad, Eva Albrecht, Alexessander Couto Alves, Jennifer L Bragg-Gresham, Anton J M de Craen, Joshua C Bis, Amélie Bonnefond, Gabrielle Boucher, Gemma Cadby, Yu-Ching Cheng, Charleston W K Chiang, Graciela Delgado, Ayse Demirkan, Nicole Dueker, Niina Eklund, Gudny Eiriksdottir, Joel Eriksson, Bjarke Feenstra, Krista Fischer, Francesca Frau, Tessel E Galesloot, Frank Geller, Anuj Goel, Mathias Gorski, Tanja B Grammer, Stefan Gustafsson, Saskia Haitjema, Jouke-Jan Hottenga, Jennifer E Huffman, Anne U Jackson, Kevin B Jacobs, Åsa Johansson, Marika Kaakinen, Marcus E Kleber, Jari Lahti, Irene Mateo Leach, Benjamin Lehne, Youfang Liu, Ken Sin Lo, Mattias Lorentzon, Jian'an Luan, Pamela A F Madden, Massimo Mangino, Barbara McKnight, Carolina Medina-Gomez, Keri L Monda, May E Montasser, Gabriele Müller, Martina Müller-Nurasyid, Ilja M Nolte, Kalliope Panoutsopoulou, Laura Pascoe, Lavinia Paternoster, Nigel W Rayner, Frida Renström, Federica Rizzi, Lynda M Rose, Kathy A Ryan, Perttu Salo, Serena Sanna, Hubert Scharnagl, Jianxin Shi, Albert Vernon Smith, Lorraine Southam, Alena Stančáková, Valgerdur Steinthorsdottir, Rona J Strawbridge, Yun Ju Sung, Ioanna Tachmazidou, Toshiko Tanaka, Gudmar Thorleifsson, Stella Trompet, Natalia Pervjakova, Jonathan P Tyrer, Liesbeth Vandenput, Sander W van der Laan, Nathalie van der Velde, Jessica van Setten, Jana V van Vliet-Ostaptchouk, Niek Verweij, Efthymia Vlachopoulou, Lindsay L Waite, Sophie R Wang, Zhaoming Wang, Sarah H Wild, Christina Willenborg, James F Wilson, Andrew Wong, Jian Yang, Loïc Yengo, Laura M Yerges-Armstrong, Lei Yu, Weihua Zhang, Jing Hua Zhao, Ehm A Andersson, Stephan J L Bakker, Damiano Baldassarre, Karina Banasik, Matteo Barcella, Cristina Barlassina, Claire Bellis, Paola Benaglio, John Blangero, Matthias Blüher, Fabrice Bonnet, Lori L Bonnycastle, Heather A Boyd, Marcel Bruinenberg, Aron S Buchman, Harry Campbell, Yii-Der Ida Chen, Peter S Chines, Simone Claudi-Boehm, John Cole, Francis S Collins, Eco J C de Geus, Lisette C P G M de Groot, Maria Dimitriou, Jubao Duan, Stefan Enroth, Elodie Eury, Aliki-Eleni Farmaki, Nita G Forouhi, Nele Friedrich, Pablo V Gejman, Bruna Gigante, Nicola Glorioso, Alan S Go, Omri Gottesman, Jürgen Gräßler, Harald Grallert, Niels Grarup, Yu-Mei Gu, Linda Broer, Annelies C Ham, Torben Hansen, Tamara B Harris, Catharina A Hartman, Maija Hassinen, Nicholas Hastie, Andrew T Hattersley, Andrew C Heath, Anjali K Henders, Dena Hernandez, Hans Hillege, Oddgeir Holmen, Kees G Hovingh, Jennie Hui, Lise L Husemoen, Nina Hutri-Kähönen, Pirro G Hysi, Thomas Illig, Philip L De Jager, Shapour Jalilzadeh, Torben Jørgensen, J Wouter Jukema, Markus Juonala, Stavroula Kanoni, Maria Karaleftheri, Kay Tee Khaw, Leena Kinnunen, Steven J Kittner, Wolfgang Koenig, Ivana Kolcic, Peter Kovacs, Nikolaj T Krarup, Wolfgang Kratzer, Janine Krüger, Diana Kuh, Meena Kumari, Theodosios Kyriakou, Claudia Langenberg, Lars Lannfelt, Chiara Lanzani, Vaneet Lotay, Lenore J Launer, Karin Leander, Jaana Lindström, Allan Linneberg, Yan-Ping Liu, Stéphane Lobbens, Robert Luben, Valeriya Lyssenko, Satu Männistö, Patrik K Magnusson, Wendy L McArdle, Cristina Menni, Sigrun Merger, Lili Milani, Grant W Montgomery, Andrew P Morris, Narisu Narisu, Mari Nelis, Ken K Ong, Aarno Palotie, Louis Pérusse, Irene Pichler, Maria G Pilia, Anneli Pouta, Myriam Rheinberger, Rasmus Ribel-Madsen, Marcus Richards, Kenneth M Rice, Treva K Rice, Carlo Rivolta, Veikko Salomaa, Alan R Sanders, Mark A Sarzynski, Salome Scholtens, Robert A Scott, William R Scott, Sylvain Sebert, Sebanti Sengupta, Bengt Sennblad, Thomas Seufferlein, Angela Silveira, P Eline Slagboom, Jan H Smit, Thomas H Sparsø, Kathleen Stirrups, Ronald P Stolk, Heather M Stringham, Morris A Swertz, Amy J Swift, Ann-Christine Syvänen, Sian-Tsung Tan, Barbara Thorand, Anke Tönjes, Angelo Tremblay, Emmanouil Tsafantakis, Peter J van der Most, Uwe Völker, Marie-Claude Vohl, Judith M Vonk, Melanie Waldenberger, Ryan W Walker, Roman Wennauer, Elisabeth Widén, Gonneke Willemsen, Tom Wilsgaard, Alan F Wright, M Carola Zillikens, Suzanne C van Dijk, Natasja M van Schoor, Folkert W Asselbergs, Paul I W de Bakker, Jacques S Beckmann, John Beilby, David A Bennett, Richard N Bergman, Sven Bergmann, Carsten A Böger, Bernhard O Boehm, Eric Boerwinkle, Dorret I Boomsma, Stefan R Bornstein, Erwin P Bottinger, Claude Bouchard, John C Chambers, Stephen J Chanock, Daniel I Chasman, Francesco Cucca, Daniele Cusi, George Dedoussis, Jeanette Erdmann, Johan G Eriksson, Denis A Evans, Ulf de Faire, Martin Farrall, Luigi Ferrucci, Ian Ford, Lude Franke, Paul W Franks, Philippe Froguel, Ron T Gansevoort, Christian Gieger, Henrik Grönberg, Vilmundur Gudnason, Ulf Gyllensten, Per Hall, Anders Hamsten, Pim van der Harst, Caroline Hayward, Markku Heliövaara, Christian Hengstenberg, Andrew A Hicks, Aroon Hingorani, Albert Hofman, Frank Hu, Heikki V Huikuri, Kristian Hveem, Alan L James, Joanne M Jordan, Antti Jula, Mika Kähönen, Eero Kajantie, Sekar Kathiresan, Lambertus A L M Kiemeney, Mika Kivimaki, Paul B Knekt, Heikki A Koistinen, Jaspal S Kooner, Seppo Koskinen, Johanna Kuusisto, Winfried Maerz, Nicholas G Martin, Markku Laakso, Timo A Lakka, Terho Lehtimäki, Guillaume Lettre, Douglas F Levinson, Lars Lind, Marja-Liisa Lokki, Pekka Mäntyselkä, Mads Melbye, Andres Metspalu, Braxton D Mitchell, Frans L Moll, Jeffrey C Murray, Arthur W Musk, Markku S Nieminen, Inger Njølstad, Claes Ohlsson, Albertine J Oldehinkel, Ben A Oostra, Lyle J Palmer, James S Pankow, Gerard Pasterkamp, Nancy L Pedersen, Oluf Pedersen, Brenda W Penninx, Markus Perola, Annette Peters, Ozren Polašek, Peter P Pramstaller, Bruce M Psaty, Lu Qi, Thomas Quertermous, Olli T Raitakari, Tuomo Rankinen, Rainer Rauramaa, Paul M Ridker, John D Rioux, Fernando Rivadeneira, Jerome I Rotter, Igor Rudan, Hester M den Ruijter, Juha Saltevo, Naveed Sattar, Heribert Schunkert, Peter E H Schwarz, Alan R Shuldiner, Juha Sinisalo, Harold Snieder, Thorkild I A Sørensen, Tim D Spector, Jan A Staessen, Bandinelli Stefania, Unnur Thorsteinsdottir, Michael Stumvoll, Jean-Claude Tardif, Elena Tremoli, Jaakko Tuomilehto, André G Uitterlinden, Matti Uusitupa, André L M Verbeek, Sita H Vermeulen, Jorma S Viikari, Veronique Vitart, Henry Völzke, Peter Vollenweider, Gérard Waeber, Mark Walker, Henri Wallaschofski, Nicholas J Wareham, Hugh Watkins, Eleftheria Zeggini, CHARGE Consortium, DIAGRAM Consortium, GLGC Consortium, Global-BPGen Consortium, ICBP Consortium, MAGIC Consortium, Aravinda Chakravarti, Deborah J Clegg, L Adrienne Cupples, Penny Gordon-Larsen, Cashell E Jaquish, D C Rao, Goncalo R Abecasis, Themistocles L Assimes, Inês Barroso, Sonja I Berndt, Michael Boehnke, Panos Deloukas, Caroline S Fox, Leif C Groop, David J Hunter, Erik Ingelsson, Robert C Kaplan, Mark I McCarthy, Karen L Mohlke, Jeffrey R O'Connell, David Schlessinger, David P Strachan, Kari Stefansson, Cornelia M van Duijn, Joel N Hirschhorn, Cecilia M Lindgren, Iris M Heid, Kari E North, Ingrid B Borecki, Zoltán Kutalik, and Ruth J F Loos

Subjects
Genetics, QH426-470
Abstract

Genome-wide association studies (GWAS) have identified more than 100 genetic variants contributing to BMI, a measure of body size, or waist-to-hip ratio (adjusted for BMI, WHRadjBMI), a measure of body shape. Body size and shape change as people grow older and these changes differ substantially between men and women. To systematically screen for age- and/or sex-specific effects of genetic variants on BMI and WHRadjBMI, we performed meta-analyses of 114 studies (up to 320,485 individuals of European descent) with genome-wide chip and/or Metabochip data by the Genetic Investigation of Anthropometric Traits (GIANT) Consortium. Each study tested the association of up to ~2.8M SNPs with BMI and WHRadjBMI in four strata (men ≤50y, men >50y, women ≤50y, women >50y) and summary statistics were combined in stratum-specific meta-analyses. We then screened for variants that showed age-specific effects (G x AGE), sex-specific effects (G x SEX) or age-specific effects that differed between men and women (G x AGE x SEX). For BMI, we identified 15 loci (11 previously established for main effects, four novel) that showed significant (FDR

Published
2015
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6. Association of the PHACTR1/EDN1 Genetic Locus With Spontaneous Coronary Artery Dissection

Author

David Adlam, Timothy M. Olson, Nicolas Combaret, Jason C. Kovacic, Siiri E. Iismaa, Abtehale Al-Hussaini, Megan M. O'Byrne, Sara Bouajila, Adrien Georges, Ketan Mishra, Peter S. Braund, Valentina d’Escamard, Siying Huang, Marios Margaritis, Christopher P. Nelson, Mariza de Andrade, Daniella Kadian-Dodov, Catherine A. Welch, Stephani Mazurkiewicz, Xavier Jeunemaitre, Claire Mei Yi Wong, Eleni Giannoulatou, Michael Sweeting, David Muller, Alice Wood, Lucy McGrath-Cadell, Diane Fatkin, Sally L. Dunwoodie, Richard Harvey, Cameron Holloway, Jean-Philippe Empana, Xavier Jouven, Jeffrey W. Olin, Rajiv Gulati, Marysia S. Tweet, Sharonne N. Hayes, Nilesh J. Samani, Robert M. Graham, Pascal Motreff, Nabila Bouatia-Naji, Loïc Belle, Patrick Dupouy, Pierre Barnay, Nicolas Meneveau, Martine Gilard, Gilles Rioufol, Grégoire Range, Philippe Brunel, Nicolas Delarche, Emmanuelle Filippi, Louis Le Bivic, Brahim Harbaoui, Hakim Benamer, Guillaume Cayla, Olivier Varenne, Stephane Peggy Manzo-Silberman, Johanne Silvain, Christian Spaulding, Christophe Caussin, Edouard Gerbaud, Yann Valy, René Koning, Thibault Lhermusier, Stanislas Champin, Emmanuel Salengro, Arnaud Fluttaz, Amer Zabalawi, Yves Cottin, Emmanuel Teiger, Christophe Saint-Etienne, Grégory Ducrocq, Stéphanie Marliere, Emmanuel Boiffard, Pierre Aubry, Jean Louis Georges, Didier Bresson, Fabien De Poli, Gaëtan Karrillon, Vincent Roule, Laurent Bali, Mathieu Valla, Antoine Gerbay, David Houpe, Olivier Dubreuil, Arsène Monnier, Norbert Mayaud, Aurélie Manchuelle, Philippe Commeau, Marc Bedossa, Majid Nikpay, Anuj Goel, Hong-Hee Won, Leanne M. Hall, Christina Willenborg, Stavroula Kanoni, Danish Saleheen, Theodosios Kyriakou, Jemma C. Hopewell, Thomas R. Webb, Lingyao Zeng, Abbas Dehghan, Maris Alver, Sebastian M. Armasu, Kirsi Auro, Andrew Bjonnes, Daniel I. Chasman, Shufeng Chen, Ian Ford, Nora Franceschini, Christian Gieger, Christopher Grace, Stefan Gustafsson, Jie Huang, Shih-Jen Hwang, Yun Kyoung Kim, Marcus E. Kleber, King Wai Lau, Xiangfeng Lu, Yingchang Lu, Leo P. Lyytikäinen, Evelin Mihailov, Alanna Morrison, Natalia Pervjakova, Liming Qu, Lynda M. Rose, Elias Salfati, Richa Saxena, Markus Scholz, Albert V. Smith, Emmi Tikkanen, Andre Uitterlinden, Xueli Yang, Weihua Zhang, Wei Zhao, Paul S. de Vries, Natalie R. van Zuydam, Sonia S. Anand, Lars Bertram, Frank Beutner, George Dedoussis, Philippe Frossard, Dominique Gauguier, Alison H. Goodall, Omri Gottesman, Marc Haber, Bok-Ghee Han, Jianfeng Huang, Shapour Jalilzadeh, Thorsten Kessler, Inke R. König, Lars Lannfelt, Wolfgang Lieb, Lars Lind, Cecilia M. Lindgren, Maisa Lokki, Patrik K. Magnusson, Nadeem H. Mallick, Narinder Mehra, Thomas Meitinger, Fazal-ur-Rehman Memon, Andrew P. Morris, Markku S. Nieminen, Nancy L. Pedersen, Annette Peters, Loukianos S. Rallidis, Asif Rasheed, Maria Samuel, Svati H. Shah, Juha Sinisalo, Kathleen E. Stirrups, Stella Trompet, Laiyuan Wang, Khan S. Zaman, Diego Ardissino, Eric Boerwinkle, Ingrid B. Borecki, Erwin P. Bottinger, Julie E. Buring, John C. Chambers, Rory Collins, L Adrienne Cupples, John Danesh, Ilja Demuth, Roberto Elosua, Stephen E. Epstein, Tõnu Esko, Mary F. Feitosa, Oscar H. Franco, Maria Grazia Franzosi, Christopher B. Granger, Dongfeng Gu, Vilmundur Gudnason, Alistair S. Hall, Anders Hamsten, Tamara B. Harris, Stanley L. Hazen, Christian Hengstenberg, Albert Hofman, Erik Ingelsson, Carlos Iribarren, J Wouter Jukema, Pekka J. Karhunen, Bong-Jo Kim, Jaspal S. Kooner, Iftikhar J. Kullo, Terho Lehtimäki, Ruth J. Loos, Olle Melander, Andres Metspalu, Winfried März, Colin N. Palmer, Markus Perola, Thomas Quertermous, Daniel J. Rader, Paul M. Ridker, Samuli Ripatti, Robert Roberts, Veikko Salomaa, Dharambir K. Sanghera, Stephen M. Schwartz, Udo Seedorf, Alexandre F. Stewart, David J. Stott, Joachim Thiery, Pierre A. Zalloua, Christopher J. O'Donnell, Muredach P. Reilly, Themistocles L. Assimes, John R. Thompson, Jeanette Erdmann, Robert Clarke, Hugh Watkins, Sekar Kathiresan, Ruth McPherson, Panos Deloukas, Heribert Schunkert, Martin Farrall, Department of Cardiovascular Sciences, University of Leicester and NIHR Leicester Biomedical Research Centre, Glenfield Hospital, Leicester, Mayo Clinic [Rochester], Service de Cardiologie Maladies Vasculaires [CHU Clermont-Ferrand], CHU Gabriel Montpied [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, Icahn School of Medicine at Mount Sinai [New York] (MSSM), Victor Chang Cardiac Research Institute, University of New South Wales [Sydney] (UNSW), St. Vincent’s Clinical School [Sydney, Australia], UNSW Faculty of Medicine [Sydney], University of New South Wales [Sydney] (UNSW)-University of New South Wales [Sydney] (UNSW), Department of Health Sciences Research [Mayo Clinic] (HSR), Mayo Clinic, Paris-Centre de Recherche Cardiovasculaire (PARCC (UMR_S 970/ U970)), Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Université Paris Descartes - Faculté de Médecine (UPD5 Médecine), Université Paris Descartes - Paris 5 (UPD5), Sorbonne Université - Faculté de Médecine (SU FM), Sorbonne Université (SU), Service de génétique [CHU HEGP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), Department of Cardiovascular Medicine, Mayo Clinic, Hôpital Universitaire Carémeau [Nîmes] (CHU Nîmes), and Centre Hospitalier Universitaire de Nîmes (CHU Nîmes)

Subjects
Adult, Male, medicine.medical_specialty, Myocardial infarction, Coronary Vessel Anomalies, Fibromuscular dysplasia, 030204 cardiovascular system & hematology, 03 medical and health sciences, 0302 clinical medicine, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Internal medicine, medicine, Prevalence, Fibromuscular Dysplasia, Humans, 030212 general & internal medicine, Vascular Diseases, Artery dissection, MESH: Australia, United Kingdom, USA, Coronary Vessel Anomalies / epidemiology, Endothelin-1 / genetics, Microfilament proteins / genetics, Genetic association, Aged, Endothelin-1, business.industry, Microfilament Proteins, Australia, Cardiovascular disease in women, Middle Aged, medicine.disease, R1, United States, 3. Good health, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Genetic Loci, Case-Control Studies, Cardiology, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, Female, France, Cardiology and Cardiovascular Medicine, Scad, business
Abstract

Background: \ud Spontaneous coronary artery dissection (SCAD) is an increasingly recognized cause of acute coronary syndromes (ACS) afflicting predominantly younger to middle-aged women. Observational studies have reported a high prevalence of extracoronary vascular anomalies, especially fibromuscular dysplasia (FMD) and a low prevalence of coincidental cases of atherosclerosis. PHACTR1/EDN1 is a genetic risk locus for several vascular diseases, including FMD and coronary artery disease, with the putative causal noncoding variant at the rs9349379 locus acting as a potential enhancer for the endothelin-1 (EDN1) gene.\ud \ud Objectives: \ud This study sought to test the association between the rs9349379 genotype and SCAD.\ud \ud Methods: \ud Results from case control studies from France, United Kingdom, United States, and Australia were analyzed to test the association with SCAD risk, including age at first event, pregnancy-associated SCAD (P-SCAD), and recurrent SCAD.\ud \ud Results: \ud The previously reported risk allele for FMD (rs9349379-A) was associated with a higher risk of SCAD in all studies. In a meta-analysis of 1,055 SCAD patients and 7,190 controls, the odds ratio (OR) was 1.67 (95% confidence interval [CI]: 1.50 to 1.86) per copy of rs9349379-A. In a subset of 491 SCAD patients, the OR estimate was found to be higher for the association with SCAD in patients without FMD (OR: 1.89; 95% CI: 1.53 to 2.33) than in SCAD cases with FMD (OR: 1.60; 95% CI: 1.28 to 1.99). There was no effect of genotype on age at first event, P-SCAD, or recurrence.\ud \ud Conclusions: \ud The first genetic risk factor for SCAD was identified in the largest study conducted to date for this condition. This genetic link may contribute to the clinical overlap between SCAD and FMD.

Published
2019
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7. Interactions Between Vascular Wall and Perivascular Adipose Tissue Reveal Novel Roles for Adiponectin in the Regulation of Endothelial Nitric Oxide Synthase Function in Human Vessels

Author

Ravi De Silva, Constantinos Bakogiannis, Svetlana Reilly, Mario Petrou, Cheerag Shirodaria, Marios Margaritis, Robin P. Choudhury, Barbara Casadei, Janet E. Digby, Alexios S. Antonopoulos, Dimitris Tousoulis, Michael Demosthenous, Patricia Coutinho, Charalambos Antoniades, Keith M. Channon, Regent Lee, Rana Sayeed, Christodoulos Stefanadis, and Shapour Jalilzadeh

Subjects
Male, medicine.medical_specialty, Nitric Oxide Synthase Type III, Endothelium, Gene Expression, Peroxisome proliferator-activated receptor, Adipose tissue, Adipokine, Vasodilation, Coronary Artery Disease, Biology, Nitric Oxide, Nitric oxide, chemistry.chemical_compound, Superoxides, Physiology (medical), Internal medicine, medicine, Humans, Saphenous Vein, Coronary Artery Bypass, Mammary Arteries, Aged, chemistry.chemical_classification, Aldehydes, Adiponectin, PPAR gamma, Oxidative Stress, Endocrinology, medicine.anatomical_structure, Adipose Tissue, chemistry, Female, Cardiology and Cardiovascular Medicine, Oxidation-Reduction
Abstract

Background— Adiponectin is an adipokine with potentially important roles in human cardiovascular disease states. We studied the role of adiponectin in the cross-talk between adipose tissue and vascular redox state in patients with atherosclerosis. Methods and Results— The study included 677 patients undergoing coronary artery bypass graft surgery. Endothelial function was evaluated by flow-mediated dilation of the brachial artery in vivo and by vasomotor studies in saphenous vein segments ex vivo. Vascular superoxide (O 2 − ) and endothelial nitric oxide synthase (eNOS) uncoupling were quantified in saphenous vein and internal mammary artery segments. Local adiponectin gene expression and ex vivo release were quantified in perivascular (saphenous vein and internal mammary artery) subcutaneous and mesothoracic adipose tissue from 248 patients. Circulating adiponectin was independently associated with nitric oxide bioavailability and O 2 − production/eNOS uncoupling in both arteries and veins. These findings were supported by a similar association between functional polymorphisms in the adiponectin gene and vascular redox state. In contrast, local adiponectin gene expression/release in perivascular adipose tissue was positively correlated with O 2 − and eNOS uncoupling in the underlying vessels. In ex vivo experiments with human saphenous veins and internal mammary arteries, adiponectin induced Akt-mediated eNOS phosphorylation and increased tetrahydrobiopterin bioavailability, improving eNOS coupling. In ex vivo experiments with human saphenous veins/internal mammary arteries and adipose tissue, we demonstrated that peroxidation products produced in the vascular wall (ie, 4-hydroxynonenal) upregulate adiponectin gene expression in perivascular adipose tissue via a peroxisome proliferator-activated receptor-γ–dependent mechanism. Conclusions— We demonstrate for the first time that adiponectin improves the redox state in human vessels by restoring eNOS coupling, and we identify a novel role of vascular oxidative stress in the regulation of adiponectin expression in human perivascular adipose tissue.

Published
2013
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8. A principal component meta-analysis on multiple anthropometric traits identifies novel loci for body shape

Author

Niina Eklund, Robert C. Kaplan, Niek Verweij, Marcus Richards, Nancy L. Heard-Costa, Angelo Tremblay, Lu Qi, Andres Metspalu, Mark A. Sarzynski, Charleston W. K. Chiang, Tõnu Esko, Jaana Lindström, Pirro G. Hysi, Torben Hansen, James F. Wilson, Serena Sanna, Marie-Claude Vohl, Lynda M. Rose, Daniele Cusi, Megan T. Smith, Anne U. Jackson, Jing Hua Zhao, Anubha Mahajan, Nele Friedrich, Marcel Bruinenberg, Lori L. Bonnycastle, Ilja M. Nolte, Timothy M. Frayling, Weihua Zhang, Lavinia Paternoster, Jenny van Dongen, Torben Jørgensen, Aarno Palotie, Jana V. van Vliet-Ostaptchouk, Martin Farrall, Konstantin Strauch, Jan Smit, Zoltán Kutalik, Anne E. Justice, Elisabeth Widen, Tuomo Rankinen, Timo A. Lakka, Maria Dimitriou, Louis Pérusse, Peter J. van der Most, Yun Ju Sung, George Dedoussis, Caroline Hayward, Tom Wilsgaard, Peter P. Pramstaller, Maria Karaleftheri, Seppo Koskinen, Clive Osmond, Panos Deloukas, David J. Hunter, Kathleen Stirrups, Nicola Glorioso, Andrew T. Hattersley, Hugh Watkins, Sven Bergmann, Eric Boerwinkle, Catharina A. Hartman, Anke Tönjes, Daniel I. Chasman, May E. Montasser, Alan James, Ben A. Oostra, Nigel W. Rayner, Massimo Mangino, Ron T. Gansevoort, Cristina Barlassina, Johanna Kuusisto, Andrew A. Hicks, Roberto Lorbeer, Tomi Laitinen, Narisu Narisu, Stefan R. Bornstein, Gemma Cadby, Johan G. Eriksson, Gudmar Thorleifsson, Erika Salvi, Jari Lahti, Cornelia M. van Duijn, Janina M. Jeff, Heather M. Stringham, Bruce M. Psaty, Thomas W. Winkler, Paul M. Ridker, Unnur Thorsteinsdottir, Lyle J. Palmer, Alexander Teumer, Jürgen Gräßler, Allan Linneberg, Francesca D'Avila, Markku Heliövaara, Harald Grallert, Ivana Kolcic, Kari E. North, Eleftheria Zeggini, James S. Pankow, Alena Standáková, Marjo-Riitta Järvelin, Ozren Polasek, Krista Fischer, Valeriya Lyssenko, Thorkild I. A. Sørensen, André G. Uitterlinden, Stavroula Kanoni, Caroline S. Fox, Sophie R. Wang, Treva Rice, Maria Grazia Pilia, Olli T. Raitakari, Claudia Langenberg, Thomas Sparsø, Emmanouil Tsafantakis, Irene Pichler, Kathy Ryan, Eero Jokinen, Mika Kähönen, Leif Groop, Irene Mateo Leach, Gabriele Müller, Annette Peters, Peter Vollenweider, Oddgeir L. Holmen, David Schlessinger, Paul Knekt, M. Carola Zillikens, Evelin Mihailov, Erkki Vartiainen, Nicholas J. Wareham, Francis S. Collins, Sirkka Keinänen-Kiukaanniemi, Mark I. McCarthy, Joel N. Hirschhorn, Frank B. Hu, Janina S. Ried, Valgerdur Steinthorsdottir, Shapour Jalilzadeh, Peter Kovacs, Anuj Goel, Pim van der Harst, Peter Schwarz, Mathias Gorski, Jorma Viikari, Uwe Völker, Cecilia M. Lindgren, Theodosios Kyriakou, Morris A. Swertz, Inga Prokopenko, Ken K. Ong, Leena Kinnunen, Markus Perola, Kristian Hveem, Matthias Blüher, Rebecca Mills, Albertine J. Oldehinkel, Anders Hamsten, Mattias Lorentzon, Joel Eriksson, Karen L. Mohlke, Rasmus Ribel-Madsen, Pekka Jousilahti, Paolo Manunta, Eva Albrecht, Jeffrey R. O'Connell, Wendy L. McArdle, Amy J. Swift, Dorret I. Boomsma, Harry Campbell, Fracensco Cucca, Aaron Isaacs, Andrew Wong, Georg Homuth, Laura M. Yerges-Armstrong, Carolina Medina-Gomez, Kay-Tee Khaw, Claes Ohlsson, Claude Bouchard, John Blangero, Aliki-Eleni Farmaki, Lorraine Southam, Anette P. Gjesing, Traci M. Bartz, Dabeeru C. Rao, Andrew P. Morris, David P. Strachan, Nita G. Forouhi, Eco J. C. de Geus, Jaakko Tuomilehto, Antti Jula, Ryan W. Walker, Mary F. Feitosa, Reedik Mägi, Aki S. Havulinna, Inger Njølstad, Alan R. Shudiner, Jennifer E. Huffman, Peter Lichtner, Richard N. Bergman, Mariaelisa Graff, Diana Kuh, Tim D. Spector, Robert Luben, Veikko Salomaa, Christian Gieger, Jaspal S. Kooner, Teresa Ferreira, Jennifer L. Bragg-Gresham, Sylvain Sebert, Terho Lehtimäki, Heikki A. Koistinen, Alexandra M. Lewin, Alexessander Couto Alves, Peter S. Chines, Lise Lotte N. Husemoen, Salome Scholtens, Yii-Der Ida Chen, Kati Kristiansson, Barbara McKnight, Sara M. Willems, Rainer Rauramaa, Satu Männistö, Stephan J. L. Bakker, Angela Döring, Audrey Y. Chu, Niels Grarup, Matti Uusitupa, Hannu Puolijoki, L. Adrienne Cupples, Veronique Vitart, Marie Neergaard Harder, Jouke-Jan Hottenga, Kari Stefansson, Alan F. Wright, Igor Rudan, Keri L. Monda, Jian'an Luan, Robert A. Scott, Albert Hofman, Tarunveer S. Ahluwalia, Liesbeth Vandenput, Maija Hassinen, Sarah H. Wild, Iris M. Heid, Brenda W.J.H. Penninx, John C. Chambers, Claire Bellis, Nicholas D. Hastie, Ruth J. F. Loos, Martina Müller-Nurasyid, Johanne Marie Justesen, Gérard Waeber, Jennie Hui, Gonçalo R. Abecasis, Ishminder K. Kooner, Harold Snieder, Judith M. Vonk, Ioanna Tachmazidou, Ronald P. Stolk, Michael Stumvoll, Till Ittermann, Oluf Pedersen, Ingrid B. Borecki, Gonneke Willemsen, Jagvir Grewal, Markku Laakso, Arthur W. Musk, Eero Kajantie, Hans L. Hillege, Michael Boehnke, Cristina Venturini, Lili Milani, John Beilby, Fernando Rivadeneira, Biochemie, RS: FHML MaCSBio, RS: CARIM - R1.06 - Genetic Epidemiology and Genomics of cardiovascular diseases, Goel, Anuj [0000-0003-2307-4021], Jackson, Anne U [0000-0002-9672-2547], Kristiansson, Kati [0000-0003-4688-107X], Medina-Gomez, Carolina [0000-0001-7999-5538], Nolte, Ilja M [0000-0001-5047-4077], Prokopenko, Inga [0000-0003-1624-7457], Teumer, Alexander [0000-0002-8309-094X], Wong, Andrew [0000-0003-2079-4779], Beilby, John [0000-0002-4915-2254], Bergmann, Sven [0000-0002-6785-9034], Strachan, David P [0000-0001-7854-1366], Apollo - University of Cambridge Repository, Life Course Epidemiology (LCE), Cardiovascular Centre (CVC), Groningen Institute for Organ Transplantation (GIOT), Lifestyle Medicine (LM), Groningen Kidney Center (GKC), Interdisciplinary Centre Psychopathology and Emotion regulation (ICPE), Groningen Energy & Sustainability Programme, Groningen Institute for Gastro Intestinal Genetics and Immunology (3GI), Groningen Research Institute for Asthma and COPD (GRIAC), Center for Liver, Digestive and Metabolic Diseases (CLDM), Biological Psychology, EMGO+ - Lifestyle, Overweight and Diabetes, Children's Hospital, Lastentautien yksikkö, Clinicum, Institute for Molecular Medicine Finland, Behavioural Sciences, Johan Eriksson / Principal Investigator, Department of General Practice and Primary Health Care, Department of Medicine, Endokrinologian yksikkö, Aarno Palotie / Principal Investigator, Elisabeth Ingrid Maria Widen / Principal Investigator, University of Helsinki, Leif Groop Research Group, Quantitative Genetics, HUS Children and Adolescents, Developmental Psychology Research Group, Complex Disease Genetics, Genomics of Neurological and Neuropsychiatric Disorders, Genomic Discoveries and Clinical Translation, School of Medicine / Clinical Medicine, School of Medicine / Biomedicine,School of Medicine / Clinical Nutrition, Ried, Janina S., Jeff, Janina M., Chu, Audrey Y., Bragg Gresham, Jennifer L., Van Dongen, Jenny, Huffman, Jennifer E., Ahluwalia, Tarunveer S., Cadby, Gemma, Eklund, Niina, Eriksson, Joel, Esko, Toñu, Feitosa, Mary F., Goel, Anuj, Gorski, Mathia, Hayward, Caroline, Heard Costa, Nancy L., Jackson, Anne U., Jokinen, Eero, Kanoni, Stavroula, Kristiansson, Kati, Kutalik, Zoltán, Lahti, Jari, Luan, Jian'An, Mägi, Reedik, Mahajan, Anubha, Mangino, Massimo, Medina Gomez, Carolina, Monda, Keri L., Nolte, Ilja M., Pérusse, Loui, Prokopenko, Inga, Qi, Lu, Rose, Lynda M., Salvi, Erika, Smith, Megan T., Snieder, Harold, Standáková, Alena, Ju Sung, Yun, Tachmazidou, Ioanna, Teumer, Alexander, Thorleifsson, Gudmar, Van Der Harst, Pim, Walker, Ryan W., Wang, Sophie R., Wild, Sarah H., Willems, Sara M., Wong, Andrew, Zhang, Weihua, Albrecht, Eva, Couto Alves, Alexessander, Bakker, Stephan J. L., Barlassina, Cristina, Bartz, Traci M., Beilby, John, Bellis, Claire, Bergman, Richard N., Bergmann, Sven, Blangero, John, Blüher, Matthia, Boerwinkle, Eric, Bonnycastle, Lori L., Bornstein, Stefan R., Bruinenberg, Marcel, Campbell, Harry, Chen, Yii Der Ida, Chiang, Charleston W. K., Chines, Peter S., Collins, Francis S, Cucca, Fracensco, Cupples, L. Adrienne, D'Avila, Francesca, De Geus, Eco J. C., Dedoussis, George, Dimitriou, Maria, Döring, Angela, Eriksson, Johan G., Farmaki, Aliki Eleni, Farrall, Martin, Ferreira, Teresa, Fischer, Krista, Forouhi, Nita G., Friedrich, Nele, Gjesing, Anette Prior, Glorioso, Nicola, Graff, Mariaelisa, Grallert, Harald, Grarup, Niel, Gräßler, Jürgen, Grewal, Jagvir, Hamsten, Ander, Harder, Marie Neergaard, Hartman, Catharina A., Hassinen, Maija, Hastie, Nichola, Hattersley, Andrew Tym, Havulinna, Aki S., Heliövaara, Markku, Hillege, Han, Hofman, Albert, Holmen, Oddgeir, Homuth, Georg, Hottenga, Jouke Jan, Hui, Jennie, Husemoen, Lise Lotte, Hysi, Pirro G., Isaacs, Aaron, Ittermann, Till, Jalilzadeh, Shapour, James, Alan L., Jørgensen, Torben, Jousilahti, Pekka, Jula, Antti, Marie Justesen, Johanne, Justice, Anne E., Kähönen, Mika, Karaleftheri, Maria, Tee Khaw, Kay, Keinanen Kiukaanniemi, Sirkka M., Kinnunen, Leena, Knekt, Paul B., Koistinen, Heikki A., Kolcic, Ivana, Kooner, Ishminder K., Koskinen, Seppo, Kovacs, Peter, Kyriakou, Theodosio, Laitinen, Tomi, Langenberg, Claudia, Lewin, Alexandra M., Lichtner, Peter, Lindgren, Cecilia M., Lindström, Jaana, Linneberg, Allan, Lorbeer, Roberto, Lorentzon, Mattia, Luben, Robert, Lyssenko, Valeriya, Männistö, Satu, Manunta, Paolo, Leach, Irene Mateo, Mcardle, Wendy L., Mcknight, Barbara, Mohlke, Karen L., Mihailov, Evelin, Milani, Lili, Mills, Rebecca, Montasser, May E., Morris, Andrew P., Müller, Gabriele, Musk, Arthur W., Narisu, Narisu, Ong, Ken K., Oostra, Ben A., Osmond, Clive, Palotie, Aarno, Pankow, James S., Paternoster, Lavinia, Penninx, Brenda W., Pichler, Irene, Pilia, Maria G., Polašek, Ozren, Pramstaller, Peter P., Raitakari, Olli T, Rankinen, Tuomo, Rao, D. C., Rayner, Nigel W., Ribel Madsen, Rasmu, Rice, Treva K., Richards, Marcu, Ridker, Paul M., Rivadeneira, Fernando, Ryan, Kathy A., Sanna, Serena, Sarzynski, Mark A., Scholtens, Salome, Scott, Robert A., Sebert, Sylvain, Southam, Lorraine, Sparsø, Thomas Hempel, Steinthorsdottir, Valgerdur, Stirrups, Kathleen, Stolk, Ronald P., Strauch, Konstantin, Stringham, Heather M., Swertz, Morris A., Swift, Amy J., Tönjes, Anke, Tsafantakis, Emmanouil, Van Der Most, Peter J., Van Vliet Ostaptchouk, Jana V., Vandenput, Liesbeth, Vartiainen, Erkki, Venturini, Cristina, Verweij, Niek, Viikari, Jorma S., Vitart, Veronique, Vohl, Marie Claude, Vonk, Judith M., Waeber, Gérard, Widén, Elisabeth, Willemsen, Gonneke, Wilsgaard, Tom, Winkler, Thomas W., Wright, Alan F., Yerges Armstrong, Laura M., Zhao, Jing Hua, Carola Zillikens, M., Boomsma, Dorret I., Bouchard, Claude, Chambers, John C., Chasman, Daniel I., Cusi, Daniele, Gansevoort, Ron T., Gieger, Christian, Hansen, Torben, Hicks, Andrew A., Hu, Frank, Hveem, Kristian, Jarvelin, Marjo Riitta, Kajantie, Eero, Kooner, Jaspal S., Kuh, Diana, Kuusisto, Johanna, Laakso, Markku, Lakka, Timo A., Lehtimäki, Terho, Metspalu, Andre, Njølstad, Inger, Ohlsson, Clae, Oldehinkel, Albertine J., Palmer, Lyle J., Pedersen, Oluf, Perola, Marku, Peters, Annette, Psaty, Bruce M., Puolijoki, Hannu, Rauramaa, Rainer, Rudan, Igor, Salomaa, Veikko, Schwarz, Peter E. H., Shudiner, Alan R., Smit, Jan H., Sørensen, Thorkild I. A., Spector, Timothy D., Stefansson, Kari, Stumvoll, Michael, Tremblay, Angelo, Tuomilehto, Jaakko, Uitterlinden, André G., Uusitupa, Matti, Völker, Uwe, Vollenweider, Peter, Wareham, Nicholas J., Watkins, Hugh, Wilson, James F., Zeggini, Eleftheria, Abecasis, Goncalo R., Boehnke, Michael, Borecki, Ingrid B., Deloukas, Pano, Van Duijn, Cornelia M., Fox, Caroline, Groop, Leif C., Heid, Iris M., Hunter, David J., Kaplan, Robert C., Mccarthy, Mark I., North, Kari E., O'Connell, Jeffrey R., Schlessinger, David, Thorsteinsdottir, Unnur, Strachan, David P., Frayling, Timothy, Hirschhorn, Joel N., Müller Nurasyid, Martina, Loos, Ruth J. F., Internal medicine, Psychiatry, EMGO - Mental health, Public Health, Epidemiology, Surgery, Internal Medicine, Erasmus MC other, and Child and Adolescent Psychiatry / Psychology

Subjects
0301 basic medicine, Netherlands Twin Register (NTR), Statistical methods, General Physics and Astronomy, Genome-wide association study, Genome-wide association studies, Mice, HEIGHT, Body Size, Mass index, 2. Zero hunger, Genetics, Principal Component Analysis, Multidisciplinary, VDP::Medisinske Fag: 700::Helsefag: 800::Samfunnsmedisin, sosialmedisin: 801, Anthropometry, Chemistry (all), Phenotype, Common, gene, body, shape, Multidisciplinary Sciences, Principal component analysis, Trait, Science & Technology - Other Topics, DIET-INDUCED OBESITY, Waist, Genotype, 515 Psychology, Science, EARLY-ONSET, Snp, BIOLOGY, HIP RATIO, Genome-wide association studies Statistical methods, Biology, General Biochemistry, Genetics and Molecular Biology, Article, 03 medical and health sciences, Physics and Astronomy (all), MASS INDEX, DISEASE ASSOCIATIONS, RESOURCE, MD Multidisciplinary, Humans, GENOME-WIDE ASSOCIATION, Biochemistry, Genetics and Molecular Biology (all), Science & Technology, Models, Genetic, ta1184, FAT DISTRIBUTION, General Chemistry, ta3121, 030104 developmental biology, 3121 General medicine, internal medicine and other clinical medicine, 3111 Biomedicine, VDP::Medical disciplines: 700::Health sciences: 800::Community medicine, Social medicine: 801, Body mass index, Genome-Wide Association Study
Abstract

Large consortia have revealed hundreds of genetic loci associated with anthropometric traits, one trait at a time. We examined whether genetic variants affect body shape as a composite phenotype that is represented by a combination of anthropometric traits. We developed an approach that calculates averaged PCs (AvPCs) representing body shape derived from six anthropometric traits (body mass index, height, weight, waist and hip circumference, waist-to-hip ratio). The first four AvPCs explain >99% of the variability, are heritable, and associate with cardiometabolic outcomes. We performed genome-wide association analyses for each body shape composite phenotype across 65 studies and meta-analysed summary statistics. We identify six novel loci: LEMD2 and CD47 for AvPC1, RPS6KA5/C14orf159 and GANAB for AvPC3, and ARL15 and ANP32 for AvPC4. Our findings highlight the value of using multiple traits to define complex phenotypes for discovery, which are not captured by single-trait analyses, and may shed light onto new pathways., published version, peerReviewed

Published
2016
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9. A genome-wide association study in Europeans and South Asians identifies five new loci for coronary artery disease

Author

Markku S. Nieminen, Engert Jc, Anders Hamsten, Mark I. McCarthy, Khan Shah Zaman, Nilesh J. Samani, Silvia Pietri, Nadeem Hayat Mallick, Robert Clarke, Anna Helgadottir, John C. Chambers, Peter Sleight, Lasse Folkersen, Simon C. Potter, Fazal-ur-Rehman Memon, Gonçalo R. Abecasis, Shapour Jalilzadeh, Louise Bowman, Anders Mälarstig, Abdus Samad, Veikko Salomaa, John F. Peden, Juha Sinisalo, Jane Armitage, Asif Rasheed, Simona Barlera, Eirini V. Theodoraki, Suthesh Sivapalaratnam, Halit Ongen, Alison Offer, Theodosios Kyriakou, Hugh Watkins, John J.P. Kastelein, Philippe Froguel, Emma Gray, Tim D. Spector, Panos Deloukas, Mai-Lis Hellénius, Anders Gabrielsen, Martin Farrall, Jemma C. Hopewell, Mark Lathrop, Nicole Soranzo, Nabeel Ahmed, Bruna Gigante, Roberto Marchioli, Muhammad Azhar, Danish Saleheen, Salim Yusuf, Simon Heath, Anders Franco-Cereceda, Ulf de Faire, James Scott, Ann-Christine Syvänen, Marc Delepine, Maria Samuel, John Öhrvik, M. Ishaq, Fiona Green, Leena Peltonen, Paul Elliott, Moazzam Zaidi, Gerd Assmann, Rhian Gwilliam, Gianni Tognoni, Nabi Shah, John Danesh, Jorg Hager, Weihua Zhang, Mark J. Caulfield, Jaspal S. Kooner, Angad S. Kooner, Suzannah Bumpstead, Richard Peto, Francesca Gori, Maria Grazia Franzosi, Anuj Goel, Sarah E. Hunt, Karin Leander, Ferdinand M. van't Hooft, Angela Silveira, Rory Collins, Samuli Ripatti, Muhammed Murtaza, Pamela Linksted, Per Eriksson, George V. Dedoussis, Sarah Edkins, Sonia S. Anand, Philippe M. Frossard, Tomas Axelsson, Ali Raza Gardezi, Peter Donnelly, Mieke D. Trip, Sarah Parish, Stephan Rust, Udo Seedorf, Gunnar O Olsson, Kathy Stirrups, Rona J. Strawbridge, Joban Sehmi, Derrick A Bennett, Other departments, ACS - Amsterdam Cardiovascular Sciences, Vascular Medicine, and Cardiology

Subjects
Adult, Male, South asia, Quantitative Trait Loci, ADAMTS7 Protein, Single-nucleotide polymorphism, Genome-wide association study, Coronary Artery Disease, Biology, 030204 cardiovascular system & hematology, Polymorphism, Single Nucleotide, Article, White People, Coronary artery disease, 03 medical and health sciences, 0302 clinical medicine, Asian People, Genotype, Genetics, Medicine, Humans, Genetic Predisposition to Disease, cardiovascular diseases, Myocardial infarction, Genotyping, Genetics (clinical), 030304 developmental biology, Genetic association, Aged, Oligonucleotide Array Sequence Analysis, Platelet-Derived Growth Factor, 0303 health sciences, Lymphokines, business.industry, Heritability, Middle Aged, Sterol Esterase, medicine.disease, ADAM Proteins, Case-Control Studies, Female, Cardiology and Cardiovascular Medicine, business, Imputation (genetics), Genome-Wide Association Study, Transcription Factors
Abstract

Study Hypothesis Recently, genome-wide association studies (GWAS) have identified several common variants associated with increased risk of coronary artery disease (CAD) and myocardial infarction (MI) by 10% to 30%. The authors state that these loci explain only a small proportion of the predicted genetic risk and that all of the current loci for CAD and MI by GWAS have been discovered in European populations. The authors hypothesized that discovery of new susceptibility loci of smaller effect sizes would be aided by conducting much larger studies in addition to an emphasis on early-onset CAD and clearly defined clinical end points. Therefore, they assembled the Coronary Artery Disease (C4D) Genetics Consortium.1 ### How Was the Hypothesis Tested? The authors performed a meta-analysis of 4 large GWAS of CAD, 2 of European ancestry (PROCARDIS and HPS) and 2 of South Asian ancestry (PROMIS and LOLLIPOP), with ≈575 000 genotyped single-nucleotide polymorphisms (SNPs) in a discovery data set comprising 15 420 individuals with CAD (cases) (8424 Europeans and 6996 South Asians) and 15 062 control subjects. They observed little evidence for ancestry-specific associations, supporting the use of combined analyses. Furthermore, the authors state that because all individuals were genotyped on the same platform (whole-genome Illumina BeadChips), a meta-analysis of actual genotypes rather than imputed data enabled analysis of low-frequency variants (1% to 5%), which have been excluded from GWAS either because of sample size or because imputation has been required to combine data from different genotyping platforms. After the meta-analysis, they selected 59 SNPs from 50 loci that showed potential new associations from the meta-analysis of the European and South Asian studies (41 SNPs; P

Published
2016

10. Evidence From Human Myectomy Samples That MYBPC3 Mutations Cause Hypertrophic Cardiomyopathy Through Haploinsufficiency

Author

Steven Marston, Victor Tsang, Shapour Jalilzadeh, C Redwood, K J Livesey, William J. McKenna, Adam Jacques, O'Neal Copeland, Hugh Watkins, and S Carballo

Subjects
medicine.medical_specialty, Genotype, Physiology, Heart Ventricles, Mutation, Missense, Cardiomyopathy, Haploidy, Gene mutation, Biology, medicine.disease_cause, Sarcomere, Internal medicine, medicine, Humans, Missense mutation, RNA, Messenger, Alleles, Mutation, Myocardium, Hypertrophic cardiomyopathy, medicine.disease, Endocrinology, Case-Control Studies, Hypertrophy, Left Ventricular, Carrier Proteins, Cardiology and Cardiovascular Medicine, Haploinsufficiency
Abstract

Rationale: Most sarcomere gene mutations that cause hypertrophic cardiomyopathy are missense alleles that encode dominant negative proteins. The potential exceptions are mutations in the MYBPC3 gene (encoding cardiac myosin-binding protein-C [MyBP-C]), which frequently encode truncated proteins. Objective: We sought to determine whether there was evidence of haploinsufficiency in hypertrophic cardiomyopathy caused by MYBPC3 mutations by comparing left ventricular muscle from patients undergoing surgical myectomy with samples from donor hearts. Methods and Results: MyBP-C protein and mRNA levels were quantitated using immunoblotting and RT-PCR. Nine of 37 myectomy samples had mutations in MYBPC3 : 2 missense alleles (Glu258Lys, Arg502Trp) and 7 premature terminations. No specific truncated MyBP-C peptides were detected in whole muscle homogenates of hypertrophic cardiomyopathy tissue. However, the overall level of MyBP-C in myofibrils was significantly reduced ( P MYBPC3 mutation: 0.76±0.03 compared with 1.00±0.05 in donor and 1.01±0.06 in non- MYBPC3 mutant myectomies. Conclusions: The absence of any detectable truncated MyBP-C argues against its incorporation in the myofiber and any dominant negative effect. In contrast, the lowered relative level of full length protein in both truncation and missense MYBPC3 mutations argues strongly that haploinsufficiency is sufficient to cause the disease.

Published
2009
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11. Polymorphisms in the cardiac sodium channel promoter displaying variant in vitro expression activity

Author

Dan M. Roden, Shapour Jalilzadeh, Connie R. Bezzina, Tamara T. Koopmann, Arthur A.M. Wilde, Eric Schulze-Bahr, Stefan Kääb, Ping Yang, A. Pfeufer, Cardiology, and Amsterdam Cardiovascular Sciences

Subjects
Population, Single-nucleotide polymorphism, CHO Cells, Biology, Sodium Channels, Exon, Cricetulus, Gene Frequency, Cricetinae, Genetics, Coding region, Animals, Humans, education, Promoter Regions, Genetic, Allele frequency, Gene, Genetics (clinical), Alleles, Brugada Syndrome, DNA Primers, education.field_of_study, Polymorphism, Genetic, Base Sequence, Myocardium, Haplotype, Promoter, Plasmids
Abstract

Variable transcription of the cardiac sodium channel gene is a candidate mechanism determining arrhythmia susceptibility. We have previously cloned and characterized the core promoter and flanking region of SCN5A, encoding the cardiac sodium channel. Loss-of-function mutations in this gene have been reported in approximately 20% of patients with Brugada syndrome, an inherited cardiac electrical disorder associated with a high incidence of life-threatening arrhythmias. In this study, we identified DNA variants in the proximal 2.8 kb promoter region of SCN5A and determined their frequency in 1,121 subjects. This population consisted of 88 Brugada syndrome patients with no SCN5A coding region mutation, and 1,033 anonymized subjects from various ethnicities. Variant promoter activity was assayed in CHO cells and neonatal cardiomyocytes by transient transfection of promoter-reporter constructs. Single-nucleotide polymorphisms (SNPs) were identified at approximately 1/200 base pairs which are: 11 in the 5'-flanking region, 1 in exon 1, and 5 in intron 1. In addition, a haplotype consisting of two SNPs in complete linkage disequilibrium was identified. Minor allele frequencies were >5% in at least one ethnic panel at 5/19 polymorphic sites. In vitro functional analysis in cardiomyocytes identified four variants with significantly (P A, which reduced reporter activity by 62.8% in CHO cells and 55% in cardiomyocytes. From these results, we can conclude that the SCN5A core promoter includes multiple DNA polymorphisms with altered in vitro activity, further supporting the concept of interindividual variability in transcription of this cardiac ion channel gene

Published
2008
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12. Genome-wide association study of restless legs syndrome identifies common variants in three genomic regions

Author

Stephany Fulda, Barbara Schormair, Christian Gieger, Claudia Trenkwalder, Bertram Müller-Myhsok, Peter Lichtner, Cornelius G. Bachmann, Ilonka Eisensehr, Gustavo Turecki, Jacques Montplaisir, Thomas Meitinger, Stephanie Hauk, Lan Xiong, Thomas Illig, Guy A. Rouleau, Ines Peglau, Alexander Zimprich, Juliane Winkelmann, Karin Stiasny-Kolster, Stephan Ripke, Walter Paulus, Gertrud Eckstein, Wolfgang H. Oertel, Shapour Jalilzadeh, Benno Pütz, H-Erich Wichmann, and Florian Holsboer

Subjects
Adult, Nerve Tissue Proteins, Locus (genetics), Genome-wide association study, MAP Kinase Kinase 5, Biology, Polymorphism, Single Nucleotide, White People, 03 medical and health sciences, 0302 clinical medicine, Restless Legs Syndrome, mental disorders, Genetics, medicine, Humans, Genetic Predisposition to Disease, Restless legs syndrome, Allele, Myeloid Ecotropic Viral Integration Site 1 Protein, Gene, Aged, 030304 developmental biology, Aged, 80 and over, Homeodomain Proteins, Chromosomes, Human, Pair 15, 0303 health sciences, Haplotype, Chromosome Mapping, Middle Aged, medicine.disease, Introns, Neoplasm Proteins, Repressor Proteins, BTBD9, Haplotypes, Case-Control Studies, Chromosomes, Human, Pair 2, Homeobox, Chromosomes, Human, Pair 6, Co-Repressor Proteins, 030217 neurology & neurosurgery, Transcription Factors
Abstract

Restless legs syndrome (RLS) is a frequent neurological disorder characterized by an imperative urge to move the legs during night, unpleasant sensation in the lower limbs, disturbed sleep and increased cardiovascular morbidity. In a genome-wide association study we found highly significant associations between RLS and intronic variants in the homeobox gene MEIS1, the BTBD9 gene encoding a BTB(POZ) domain as well as variants in a third locus containing the genes encoding mitogen-activated protein kinase MAP2K5 and the transcription factor LBXCOR1 on chromosomes 2p, 6p and 15q, respectively. Two independent replications confirmed these association signals. Each genetic variant was associated with a more than 50% increase in risk for RLS, with the combined allelic variants conferring more than half of the risk. MEIS1 has been implicated in limb development, raising the possibility that RLS has components of a developmental disorder.

Published
2007
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13. The common non-synonymous variant G38S of the KCNE1-(minK)-gene is not associated to QT interval in Central European Caucasians: results from the KORA study

Author

Stefan Kääb, Christian Gieger, Arne Pfeufer, Siegfried Perz, Shapour Jalilzadeh, Thomas Meitinger, Britt M. Beckmann, Thomas Illig, Mahmut Akyol, Moritz F. Sinner, and H.-Erich Wichmann

Subjects
Adult, Male, Genotype, hERG, Population, Polymorphism, Single Nucleotide, Sudden death, QT interval, Genetic determinism, Electrocardiography, Gene Frequency, Heart Conduction System, Polymorphism (computer science), Humans, Medicine, education, Aged, Genetics, education.field_of_study, biology, business.industry, DNA, Middle Aged, Heritability, Genetic epidemiology, Potassium Channels, Voltage-Gated, biology.protein, Female, Cardiology and Cardiovascular Medicine, business
Abstract

Aims The QT interval in the general population is a complex trait with 30–50% heritability. QT prolongation is associated with an increased risk of sudden death. A recent family-based study found an association between QT interval and the common non-synonymous Glycin 38 Serine variant (G38S, rs1805127) of the KCNE1 gene coding for the minK-potassium channel subunit. We intended to replicate this finding in a large population sample of central European Caucasian ancestry as part of our ongoing search for genetic variants predisposing to arrhythmias. Methods and results We studied 3966 unrelated individuals from the KORA S4 population-based study without atrial fibrillation, pacemaker implant, or pregnancy. Individuals were genotyped by MALDI-TOF mass spectrometry. We did not detect any significant association between the genotypes of the G38S variant and the QT interval in the entire population or in any gender. Conclusion Unlike the common Lysine 897 Threonine variant of KCNH2 (K897T, rs1805123) the G38S variant of KCNE1 does not appear to have a strong modifying effect on QT interval. However, we cannot rule out an effect of G38S on QT in other ethnic groups, under exercise or medications or on the risk for arrhythmias and sudden death.

Published
2007
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14. A comprehensive 1000 Genomes-based genome-wide association meta-analysis of coronary artery disease

Author

Emmi Tikkanen, Elias Salfati, Majid Nikpay, Sonia S. Anand, Heribert Schunkert, Thomas Quertermous, George Dedoussis, Abbas Dehghan, Evelin Mihailov, Danish Saleheen, Lars Lannfelt, M. De Andrade, Daniel I. Chasman, Stanley L. Hazen, Vilmundur Gudnason, Christopher Grace, Christina Willenborg, Xueli Yang, Paul M. Ridker, Panos Deloukas, Hwang S-J., Eric Boerwinkle, Sekar Kathiresan, Lars Bertram, Kim B-J., Yun Kyoung Kim, Lokki M-L., Philippe M. Frossard, Adil Rasheed, Marc Haber, Alistair S. Hall, Kathleen Stirrups, Daniel J. Rader, Christopher B. Granger, Ingrid B. Borecki, Weihua Zhang, Thomas Meitinger, Liming Qu, Maris Alver, Wei Zhao, Samuli Ripatti, Andres Metspalu, Diego Ardissino, Memon F-U-R., Themistocles L. Assimes, Sebastian M. Armasu, Won H-H., L. A. Cupples, Tõnu Esko, Stephen M. Schwartz, Dongfeng Gu, Alanna C. Morrison, Han B-G., Nancy L. Pedersen, Tom R. Webb, Joachim Thiery, Marcus E. Kleber, Ligui Wang, J W Jukema, Thorsten Kessler, Xiangfeng Lu, Frank Beutner, Alison H. Goodall, Loukianos S. Rallidis, Natalia Pervjakova, Loos Rjf., Stavroula Kanoni, Leanne M. Hall, Patrik K. E. Magnusson, John C. Chambers, Christian Hengstenberg, Svati H. Shah, Olle Melander, Richa Saxena, Markus Perola, Alexandre F.R. Stewart, Jeanette Erdmann, Nadeem Hayyat Mallick, N. R. van Zuydam, Omri Gottesman, Jemma C. Hopewell, Hugh Watkins, John R. Thompson, Carlos Iribarren, Anders Hamsten, Rory Collins, Theodosios Kyriakou, Markus Scholz, Dharambir K. Sanghera, Jie Huang, Julie E. Buring, Christopher J. O'Donnell, Anuj Goel, Lynda M. Rose, Martin Farrall, Albert V. Smith, Lyytikäinen L-P., Winfried März, Muredach P. Reilly, Mary F. Feitosa, Andrew Bjonnes, Stella Trompet, John Danesh, Robert Roberts, Stefan Gustafsson, Christian Gieger, Ian Ford, Lingyao Zeng, Lars Lind, David J. Stott, Erik Ingelsson, Colin N. A. Palmer, Markku S. Nieminen, M Samuel, Annette Peters, Kirsi Auro, Dominique Gauguier, Narinder K. Mehra, Khan Shah Zaman, P. De Vries, Nilesh J. Samani, Inke R. König, Juha Sinisalo, Ilja Demuth, Pekka J. Karhunen, Wolfgang Lieb, Andrew P. Morris, Nora Franceschini, Veikko Salomaa, Robert Clarke, Erwin P. Bottinger, Roberto Elosua, Yingchang Lu, André G. Uitterlinden, Shapour Jalilzadeh, Cecilia M. Lindgren, Shufeng Chen, Terho Lehtimäki, Jaspal S. Kooner, Tamara B. Harris, Stephen E. Epstein, Udo Seedorf, Oscar H. Franco, Pierre Zalloua, King Wai Lau, Iftikhar J. Kullo, Albert Hofman, Christopher P. Nelson, MariaGrazia Franzosi, Ruth McPherson, Epidemiology, Hematology, Internal Medicine, Ophthalmology, and CARDIoGRAMplusC4D Consortium

Subjects
EXPRESSION, Genome-wide association study, Single-nucleotide polymorphism, HEART-DISEASE, Coronary Artery Disease, Biology, CELL-MIGRATION, MICE LACKING, Article, GENETIC-VARIANTS, Genetics, Genetic predisposition, CARDIoGRAMplusC4D Consortium, Humans, 1000 Genomes Project, SUSCEPTIBILITY LOCUS, IDENTIFIES 13, Genetics & Heredity, RISK, Science & Technology, Genome, Human, Haplotype, 11 Medical And Health Sciences, 06 Biological Sciences, Genetic architecture, 3. Good health, Minor allele frequency, Phenotype, MYOCARDIAL-INFARCTION, CARDIOVASCULAR-DISEASE, Allelic heterogeneity, Life Sciences & Biomedicine, Genome-Wide Association Study, Developmental Biology
Abstract

Existing knowledge of genetic variants affecting risk of coronary artery disease (CAD) is largely based on genome-wide association study (GWAS) analysis of common SNPs. Leveraging phased haplotypes from the 1000 Genomes Project, we report a GWAS meta-analysis of ∼185,000 CAD cases and controls, interrogating 6.7 million common (minor allele frequency (MAF) > 0.05) and 2.7 million low-frequency (0.005 < MAF < 0.05) variants. In addition to confirming most known CAD-associated loci, we identified ten new loci (eight additive and two recessive) that contain candidate causal genes newly implicating biological processes in vessel walls. We observed intralocus allelic heterogeneity but little evidence of low-frequency variants with larger effects and no evidence of synthetic association. Our analysis provides a comprehensive survey of the fine genetic architecture of CAD, showing that genetic susceptibility to this common disease is largely determined by common SNPs of small effect size.

Published
2015

15. Common Variants in Myocardial Ion Channel Genes Modify the QT Interval in the General Population

Author

Jakob C. Mueller, Stefan Kääb, Gerhard Steinbeck, Cornelia Huth, Thomas Illig, Arne Pfeufer, Thomas Meitinger, Siegfried Perz, Mahmut Akyol, H.-Erich Wichmann, Rolf Holle, Andreas Schöpfer-Wendels, Shapour Jalilzadeh, Bernhard Kuch, Martin Hinterseer, and Michael Nabauer

Subjects
Adult, Male, Candidate gene, Linkage disequilibrium, Genotype, Physiology, Quantitative Trait Loci, Population, Mutation, Missense, Single-nucleotide polymorphism, Locus (genetics), Biology, Quantitative trait locus, Polymorphism, Single Nucleotide, QT interval, Linkage Disequilibrium, Sampling Studies, Cohort Studies, Electrocardiography, Sex Factors, Germany, Humans, Point Mutation, Allele, education, Alleles, Aged, Genetics, education.field_of_study, KCNQ Potassium Channels, Myocardium, Genetic Variation, Middle Aged, Introns, arrhythmia cardiovascular genomics ECG quantitative trait locus multiple locus association study, Long QT Syndrome, Phenotype, Amino Acid Substitution, Haplotypes, Potassium Channels, Voltage-Gated, KCNQ1 Potassium Channel, Female, Cardiology and Cardiovascular Medicine
Abstract

Altered myocardial repolarization is one of the important substrates of ventricular tachycardia and fibrillation. The influence of rare gene variants on repolarization is evident in familial long QT syndrome. To investigate the influence of common gene variants on the QT interval we performed a linkage disequilibrium based SNP association study of four candidate genes. Using a two-step design we analyzed 174 SNPs from the KCNQ1, KCNH2, KCNE1, and KCNE2 genes in 689 individuals from the population-based KORA study and 14 SNPs with results suggestive of association in a confirmatory sample of 3277 individuals from the same survey. We detected association to a gene variant in intron 1 of the KCNQ1 gene (rs757092, +1.7 ms/allele, P =0.0002) and observed weaker association to a variant upstream of the KCNE1 gene (rs727957, +1.2 ms/allele, P =0.0051). In addition we detected association to two SNPs in the KCNH2 gene, the previously described K897T variant (rs1805123, −1.9 ms/allele, P =0.0006) and a gene variant that tags a different haplotype in the same block (rs3815459, +1.7 ms/allele, P =0.0004). The analysis of additive effects by an allelic score explained a 10.5 ms difference in corrected QT interval length between extreme score groups and 0.95% of trait variance ( P

Published
2005
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16. Apolipoprotein(a) Genetic Sequence Variants Associated With Systemic Atherosclerosis and Coronary Atherosclerotic Burden But Not With Venous Thromboembolism

Author

Cisca Wijmenga, Thorarinn Gudnason, Maria Sabater-Lleal, Monika Stoll, Gregor Kuhlenbäumer, Daniel R. Witte, Hilma Holm, Rona J. Strawbridge, Konstantinos Kostulas, Martin Farrall, Torben Hansen, Eleonora Gaetani, Isleifur Olafsson, Nilesh J. Samani, Einar M. Valdimarsson, Steve E. Humphries, Philip S. Wells, Elmo Mannarino, Kari Stefansson, Thomas Mueller, Karl Gertow, Natzi Sakalihasan, Bengt Lindblad, Klaus Berger, Pierre-Emmanuel Morange, Annette F. Baas, Antti Ronkainen, Solveig Gretarsdottir, Andries J. Smit, Damiano Baldassarre, José Manuel Soria, James R. Elmore, Philippe Giral, Niels Grarup, Martin Dichgans, Oluf Pedersen, Riyaz S. Patel, Udo Seedorf, Unnur Thorsteinsdottir, David J. Carey, Philip S. Tsao, Hulda B Magnadottir, Roberto Pola, Daniel F. Gudbjartsson, Jes S. Lindholt, Gregory T. Jones, Bongani M. Mayosi, Magnus K. Magnusson, Gerard Tromp, Ynte M. Ruigrok, Hugh S. Markus, Gudmar Thorleifsson, Stefan E Matthiasson, Jan D. Blankensteijn, Pall T. Onundarson, Rainer Rauramaa, Juan Carlos Souto, Javier Corral, Arshed A. Quyyumi, Bernard Keavney, Torben Jørgensen, Robert E. Ferrell, Andre M. van Rij, Kristiina Nyyssönen, Shapour Jalilzadeh, Allan I. Levey, Janet T. Powell, David-Alexandre Trégouët, Danny J. Eapen, Vilhelmina Haraldsdottir, Helena Kuivaniemi, Joseph Emmerich, Lambertus A Kiemeny, Anna Helgadottir, Ulf de Faire, Peter M. Rothwell, E. Bernd Ringelstein, John F. Peden, Elena Tremoli, Hugh Watkins, Anders Hamsten, G Thorgeirsson, Anders Gottsäter, Groningen Institute for Gastro Intestinal Genetics and Immunology (3GI), Groningen Kidney Center (GKC), Vascular Ageing Programme (VAP), Surgery, and ICaR - Ischemia and repair

Subjects
Pathology, Myocardial Infarction, Coronary Artery Disease, 030204 cardiovascular system & hematology, INTIMA-MEDIA THICKNESS, Carotid Intima-Media Thickness, Severity of Illness Index, Brain Ischemia, Coronary artery disease, 0302 clinical medicine, Risk Factors, lipoprotein(a), Odds Ratio, Apolipoprotein(a), Myocardial infarction, Age of Onset, Stroke, African Americans, 0303 health sciences, biology, Angiography, WOMEN, VASCULAR-DISEASE, Lipoprotein(a), Venous Thromboembolism, Thrombosis, Abdominal aortic aneurysm, 3. Good health, ISCHEMIC-STROKE, Cardiology, lipids (amino acids, peptides, and proteins), biological phenomena, cell phenomena, and immunity, Cardiology and Cardiovascular Medicine, medicine.medical_specialty, European Continental Ancestry Group, Polymorphism, Single Nucleotide, White People, 03 medical and health sciences, Peripheral Arterial Disease, Internal medicine, medicine, Humans, Genetic Predisposition to Disease, cardiovascular diseases, METAANALYSIS, Apolipoproteins A, thrombosis, 030304 developmental biology, Genetic Sequence Variants, Vascular disease, business.industry, PERIPHERAL ARTERIAL-DISEASE, Settore MED/09 - MEDICINA INTERNA, association, Intracranial Aneurysm, medicine.disease, Atherosclerosis, Black or African American, SEVERITY, Logistic Models, Intima-media thickness, MYOCARDIAL-INFARCTION, biology.protein, RISK-FACTORS, Linear Models, atherosclerosis, genetic, business, Aortic Aneurysm, Abdominal
Abstract

Objectives The purpose of this study is investigate the effects of variants in the apolipoprotein(a) gene (LPA) on vascular diseases with different atherosclerotic and thrombotic components.Background It is unclear whether the LPA variants rs10455872 and rs3798220, which correlate with lipoprotein(a) levels and coronary artery disease (CAD), confer susceptibility predominantly via atherosclerosis or thrombosis.Methods The 2 LPA variants were combined and examined as LPA scores for the association with ischemic stroke (and TOAST [Trial of Org 10172 in Acute Stroke Treatment] subtypes) (effective sample size [n(e)] = 9,396); peripheral arterial disease (n(e) = 5,215); abdominal aortic aneurysm (ne = 4,572); venous thromboembolism (ne = 4,607); intracranial aneurysm (ne = 1,328); CAD (n(e) = 12,716), carotid intima-media thickness (n = 3,714), and angiographic CAD severity (n = 5,588). Results LPA score was associated with ischemic stroke subtype large artery atherosclerosis (odds ratio [OR]: 1.27; p = 6.7 X 10(-4)), peripheral artery disease (OR: 1.47; p = 2.9 x 10(-14)), and abdominal aortic aneurysm (OR: 1.23; p = 6.0 x 10(-5)), but not with the ischemic stroke subtypes cardioembolism (OR: 1.03; p = 0.69) or small vessel disease (OR: 1.06; p = 0.52). Although the LPA variants were not associated with carotid intima-media thickness, they were associated with the number of obstructed coronary vessels (p = 4.8 x 10(-12)). Furthermore, CAD cases carrying LPA risk variants had increased susceptibility to atherosclerotic manifestations outside of the coronary tree (OR: 1.26; p = 0.0010) and had earlier onset of CAD (-1.58 years/allele; p = 8.2 x 10(-8)) than CAD cases not carrying the risk variants. There was no association of LPA score with venous thromboembolism (OR: 0.97; p = 0.63) or intracranial aneurysm (OR: 0.85; p = 0.15).Conclusions LPA sequence variants were associated with atherosclerotic burden, but not with primarily thrombotic phenotypes. (J Am Coll Cardiol 2012; 60: 722-9) (C) 2012 by the American College of Cardiology Foundation

Published
2012
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17. A common genetic variant in the NOS1 regulator NOS1AP modulates cardiac repolarization

Author

W. H. Linda Kao, Stefan Kääb, Christopher Newton-Cheh, H.-Erich Wichmann, Eduardo Marbán, Thomas Meitinger, Wendy S. Post, Arne Pfeufer, Carl S. Kashuk, Shapour Jalilzadeh, Christian Gieger, Morna Ikeda, Dan E. Arking, Thomas Illig, Peter M. Spooner, Kristen West, Mahmut Akyol, Martin G. Larson, Siegfried Perz, Chao-Yu Guo, Aravinda Chakravarti, Christopher J. O'Donnell, and Joel N. Hirschhorn

Subjects
Genetics, medicine.medical_specialty, education.field_of_study, Genome, Human, Population, Quantitative Trait Loci, Genetic Variation, Nitric Oxide Synthase Type I, Quantitative trait locus, Biology, QT interval, Polymorphism, Single Nucleotide, Minor allele frequency, Cohort Studies, Framingham Heart Study, NOS1AP, Internal medicine, Cohort, Cardiology, medicine, Humans, education, Cohort study, Adaptor Proteins, Signal Transducing
Abstract

Extremes of the electrocardiographic QT interval, a measure of cardiac repolarization, are associated with increased cardiovascular mortality. We identified a common genetic variant influencing this quantitative trait through a genome-wide association study on 200 subjects at the extremes of a population-based QT interval distribution of 3,966 subjects from the KORA cohort in Germany, with follow-up screening of selected markers in the remainder of the cohort. We validated statistically significant findings in two independent samples of 2,646 subjects from Germany and 1,805 subjects from the US Framingham Heart Study. This genome-wide study identified NOS1AP (CAPON), a regulator of neuronal nitric oxide synthase, as a new target that modulates cardiac repolarization. Approximately 60% of subjects of European ancestry carry at least one minor allele of the NOS1AP genetic variant, which explains up to 1.5% of QT interval variation.

Published
2006

18. CAPON is a Novel QT-Interval Modifier Gene with Gender Dependent Effect Identified through Genomewide Association Analysis in Individuals from the General Population

Author

Stefan Kääb, Christian Gieger, H. E. Wichmann, A. Chakravarti, Thomas Meitinger, Wendy S. Post, Arne Pfeufer, E. Marban, Thomas Illig, Shapour Jalilzadeh, Siegfried Perz, D.E. Arking, Mahmut Akyol, and P.M. Spooner

Subjects
Genetics, ddc: 610, Genomewide association, Capon, Biology, Cardiology and Cardiovascular Medicine, QT interval, Gene
Published
2007
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19. Normal passive viscoelasticity but abnormal myofibrillar force generation in human hypertrophic cardiomyopathy

Author

Steven B. Marston, Metin Avkiran, Victor Tsang, Anita C. Hoskins, Sonya C. Bardswell, Elisabeth Ehler, Jonathan C. Kentish, William J. McKenna, Cristobal G. dos Remedios, Hugh Watkins, Kim Adams, Adam Jacques, Charles Redwood, and Shapour Jalilzadeh

Subjects
Sarcomeres, medicine.medical_specialty, Diastole, Cardiomyopathy, Cross-bridge kinetics, macromolecular substances, Left ventricular hypertrophy, Myofibrils, Stress, Physiological, Isometric Contraction, Internal medicine, medicine, Humans, Myocyte, Myocytes, Cardiac, cardiovascular diseases, Molecular Biology, Viscosity, Chemistry, Hypertrophic cardiomyopathy, Viscoelasticity, Skinned cardiac myocytes, Cardiomyopathy, Hypertrophic, medicine.disease, Ca2+ sensitivity, Elasticity, Biomechanical Phenomena, Kinetics, medicine.anatomical_structure, Highlighted Article, Ventricle, Cardiology, cardiovascular system, Calcium, MYH7, Cardiology and Cardiovascular Medicine, Myofibril
Abstract

Hypertrophic cardiomyopathy (HCM) is characterized by left ventricular hypertrophy, increased ventricular stiffness and impaired diastolic filling. We investigated to what extent myocardial functional defects can be explained by alterations in the passive and active properties of human cardiac myofibrils. Skinned ventricular myocytes were prepared from patients with obstructive HCM (two patients with MYBPC3 mutations, one with a MYH7 mutation, and three with no mutation in either gene) and from four donors. Passive stiffness, viscous properties, and titin isoform expression were similar in HCM myocytes and donor myocytes. Maximal Ca2+-activated force was much lower in HCM myocytes (14 ± 1 kN/m2) than in donor myocytes (23 ± 3 kN/m2; P, Research Highlights ► The passive stiffness of skinned HCM cardiac myocytes was similar to that of normal (donor) myocytes. ► Maximum Ca-activated force production was reduced by 40% in HCM vs donor myocytes. ► This loss of force could contribute to systolic dysfunction in HCM hearts. ► Myofibrillar Ca sensitivity was higher in HCM than in donor myocytes. ► The enhanced Ca sensitivity could compensate for the smaller maximum force but would tend to cause diastolic dysfunction. ► These characteristics were common to all HCM patients studied, suggesting the changes were secondary consequence of the underlying genetic variants.

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