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Improved imputation of low-frequency and rare variants using the UK10K haplotype reference panel

Huang, Jie, Howie, Bryan, McCarthy, Shane, Memari, Yasin, Walter, Klaudia, Min, Josine L., Danecek, Petr, Malerba, Giovanni, Trabetti, Elisabetta, Zheng, Hou-Feng, Al Turki, Saeed, Amuzu, Antoinette, Anderson, Carl A., Anney, Richard, Antony, Dinu, Artigas, María Soler, Ayub, Muhammad, Bala, Senduran, Barrett, Jeffrey C., Barroso, Inês, Beales, Phil, Benn, Marianne, Bentham, Jamie, Bhattacharya, Shoumo, Birney, Ewan, Blackwood, Douglas, Bobrow, Martin, Bochukova, Elena, Bolton, Patrick F., Bounds, Rebecca, Boustred, Chris, Breen, Gerome, Calissano, Mattia, Carss, Keren, Pablo Casas, Juan, Chambers, John C., Charlton, Ruth, Chatterjee, Krishna, Chen, Lu, Ciampi, Antonio, Cirak, Sebahattin, Clapham, Peter, Clement, Gail, Coates, Guy, Cocca, Massimiliano, Collier, David A., Cosgrove, Catherine, Cox, Tony, Craddock, Nicholas John, Crooks, Lucy, Curran, Sarah, Curtis, David, Daly, Allan, Day, Ian N. M., Day-Williams, Aaron, Dedoussis, George, Down, Thomas, Du, Yuanping, van Duijn, Cornelia M., Dunham, Ian, Edkins, Sarah, Ekong, Rosemary, Ellis, Peter, Evans, David M., Farooqi, I. Sadaf, Fitzpatrick, David R., Flicek, Paul, Floyd, James, Foley, A. Reghan, Franklin, Christopher S., Futema, Marta, Gallagher, Louise, Gasparini, Paolo, Gaunt, Tom R., Geihs, Matthias, Geschwind, Daniel, Greenwood, Celia, Griffin, Heather, Grozeva, Detelina, Guo, Xiaosen, Guo, Xueqin, Gurling, Hugh, Hart, Deborah, Hendricks, Audrey E., Holmans, Peter Alan, Huang, Liren, Hubbard, Tim, Humphries, Steve E., Hurles, Matthew E., Hysi, Pirro, Iotchkova, Valentina, Isaacs, Aaron, Jackson, David K., Jamshidi, Yalda, Johnson, Jon, Joyce, Chris, Karczewski, Konrad J., Kaye, Jane, Keane, Thomas, Kemp, John P., Kennedy, Karen, Kent, Alastair, Keogh, Julia, Khawaja, Farrah, Kleber, Marcus E., van Kogelenberg, Margriet, Kolb-Kokocinski, Anja, Kooner, Jaspal S., Lachance, Genevieve, Langenberg, Claudia, Langford, Cordelia, Lawson, Daniel, Lee, Irene, van Leeuwen, Elisabeth M., Lek, Monkol, Li, Rui, Li, Yingrui, Liang, Jieqin, Lin, Hong, Liu, Ryan, Lönnqvist, Jouko, Lopes, Luis R., Lopes, Margarida, Luan, Jian'an, MacArthur, Daniel G., Mangino, Massimo, Marenne, Gaëlle, März, Winfried, Maslen, John, Matchan, Angela, Mathieson, Iain, McGuffin, Peter, McIntosh, Andrew M., McKechanie, Andrew G., McQuillin, Andrew, Metrustry, Sarah, Migone, Nicola, Mitchison, Hannah M., Moayyeri, Alireza, Morris, James, Morris, Richard, Muddyman, Dawn, Muntoni, Francesco, Nordestgaard, Børge G., Northstone, Kate, O'Donovan, Michael Conlon, O'Rahilly, Stephen, Onoufriadis, Alexandros, Oualkacha, Karim, Owen, Michael John, Palotie, Aarno, Panoutsopoulou, Kalliope, Parker, Victoria, Parr, Jeremy R., Paternoster, Lavinia, Paunio, Tiina, Payne, Felicity, Payne, Stewart J., Perry, John R. B., Pietilainen, Olli, Plagnol, Vincent, Pollitt, Rebecca C., Povey, Sue, Quail, Michael A., Quaye, Lydia, Raymond, Lucy, Rehnström, Karola, Ridout, Cheryl K., Ring, Susan, Ritchie, Graham R. S., Roberts, Nicola, Robinson, Rachel L., Savage, David B., Scambler, Peter, Schiffels, Stephan, Schmidts, Miriam, Schoenmakers, Nadia, Scott, Richard H., Scott, Robert A., Semple, Robert K., Serra, Eva, Sharp, Sally I., Shaw, Adam, Shihab, Hashem A., Shin, So-Youn, Skuse, David, Small, Kerrin S., Smee, Carol, Smith, George Davey, Southam, Lorraine, Spasic-Boskovic, Olivera, Spector, Timothy D., St Clair, David, St Pourcain, Beate, Stalker, Jim, Stevens, Elizabeth, Sun, Jianping, Surdulescu, Gabriela, Suvisaari, Jaana, Syrris, Petros, Tachmazidou, Ioanna, Taylor, Rohan, Tian, Jing, Tobin, Martin D., Toniolo, Daniela, Traglia, Michela, Tybjaerg-Hansen, Anne, Valdes, Ana M., Vandersteen, Anthony M., Varbo, Anette, Vijayarangakannan, Parthiban, Visscher, Peter M., Wain, Louise V., Walters, James Tynan Rhys, Wang, Guangbiao, Wang, Jun, Wang, Yu, Ward, Kirsten, Wheeler, Eleanor, Whincup, Peter, Whyte, Tamieka, Williams, Hywel J., Williamson, Kathleen A., Wilson, Crispian, Wilson, Scott G., Wong, Kim, Xu, ChangJiang, Yang, Jian, Zaza, Gianluigi, Zeggini, Eleftheria, Zhang, Feng, Zhang, Pingbo, Zhang, Weihua, Gambaro, Giovanni, Richards, J. Brent, Durbin, Richard, Timpson, Nicholas J., Marchini, Jonathan and Soranzo, Nicole 2015. Improved imputation of low-frequency and rare variants using the UK10K haplotype reference panel. Nature Communications 6 , 8111. 10.1038/ncomms9111

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Abstract

Imputing genotypes from reference panels created by whole-genome sequencing (WGS) provides a cost-effective strategy for augmenting the single-nucleotide polymorphism (SNP) content of genome-wide arrays. The UK10K Cohorts project has generated a data set of 3,781 whole genomes sequenced at low depth (average 7x), aiming to exhaustively characterize genetic variation down to 0.1% minor allele frequency in the British population. Here we demonstrate the value of this resource for improving imputation accuracy at rare and low-frequency variants in both a UK and an Italian population. We show that large increases in imputation accuracy can be achieved by re-phasing WGS reference panels after initial genotype calling. We also present a method for combining WGS panels to improve variant coverage and downstream imputation accuracy, which we illustrate by integrating 7,562 WGS haplotypes from the UK10K project with 2,184 haplotypes from the 1000 Genomes Project. Finally, we introduce a novel approximation that maintains speed without sacrificing imputation accuracy for rare variants.

Item Type: Article
Date Type: Publication
Status: Published
Schools: MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG)
Medicine
Neuroscience and Mental Health Research Institute (NMHRI)
Subjects: R Medicine > R Medicine (General)
Publisher: Nature Publishing Group
ISSN: 2041-1723
Date of Acceptance: 17 July 2015
Last Modified: 21 Jun 2019 19:44
URI: http://orca.cf.ac.uk/id/eprint/80935

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