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1.  BAP1 loss defines a new class of renal cell carcinoma 
Nature genetics  2012;44(7):751-759.
The molecular pathogenesis of renal cell carcinoma (RCC) is poorly understood. Whole-genome and exome sequencing followed by innovative tumorgraft analyses (to accurately determine mutant allele ratios) identified several putative two-hit tumor suppressor genes including BAP1. BAP1, a nuclear deubiquitinase, is inactivated in 15% of clear-cell RCCs. BAP1 cofractionates with and binds to HCF-1 in tumorgrafts. Mutations disrupting the HCF-1 binding motif impair BAP1-mediated suppression of cell proliferation, but not H2AK119ub1 deubiquitination. BAP1 loss sensitizes RCC cells in vitro to genotoxic stress. Interestingly, BAP1 and PBRM1 mutations anticorrelate in tumors (P=3×10−5), and combined loss of BAP1 and PBRM1 in a few RCCs was associated with rhabdoid features (q=0.0007). BAP1 and PBRM1 regulate seemingly different gene expression programs, and BAP1 loss was associated with high tumor grade (q=0.0005). Our results establish the foundation for an integrated pathological and molecular genetic classification of RCC, paving the way for subtype-specific treatments exploiting genetic vulnerabilities.
doi:10.1038/ng.2323
PMCID: PMC3788680  PMID: 22683710
2.  Accurate Whole Human Genome Sequencing using Reversible Terminator Chemistry 
Bentley, David R. | Balasubramanian, Shankar | Swerdlow, Harold P. | Smith, Geoffrey P. | Milton, John | Brown, Clive G. | Hall, Kevin P. | Evers, Dirk J. | Barnes, Colin L. | Bignell, Helen R. | Boutell, Jonathan M. | Bryant, Jason | Carter, Richard J. | Cheetham, R. Keira | Cox, Anthony J. | Ellis, Darren J. | Flatbush, Michael R. | Gormley, Niall A. | Humphray, Sean J. | Irving, Leslie J. | Karbelashvili, Mirian S. | Kirk, Scott M. | Li, Heng | Liu, Xiaohai | Maisinger, Klaus S. | Murray, Lisa J. | Obradovic, Bojan | Ost, Tobias | Parkinson, Michael L. | Pratt, Mark R. | Rasolonjatovo, Isabelle M. J. | Reed, Mark T. | Rigatti, Roberto | Rodighiero, Chiara | Ross, Mark T. | Sabot, Andrea | Sankar, Subramanian V. | Scally, Aylwyn | Schroth, Gary P. | Smith, Mark E. | Smith, Vincent P. | Spiridou, Anastassia | Torrance, Peta E. | Tzonev, Svilen S. | Vermaas, Eric H. | Walter, Klaudia | Wu, Xiaolin | Zhang, Lu | Alam, Mohammed D. | Anastasi, Carole | Aniebo, Ify C. | Bailey, David M. D. | Bancarz, Iain R. | Banerjee, Saibal | Barbour, Selena G. | Baybayan, Primo A. | Benoit, Vincent A. | Benson, Kevin F. | Bevis, Claire | Black, Phillip J. | Boodhun, Asha | Brennan, Joe S. | Bridgham, John A. | Brown, Rob C. | Brown, Andrew A. | Buermann, Dale H. | Bundu, Abass A. | Burrows, James C. | Carter, Nigel P. | Castillo, Nestor | Catenazzi, Maria Chiara E. | Chang, Simon | Cooley, R. Neil | Crake, Natasha R. | Dada, Olubunmi O. | Diakoumakos, Konstantinos D. | Dominguez-Fernandez, Belen | Earnshaw, David J. | Egbujor, Ugonna C. | Elmore, David W. | Etchin, Sergey S. | Ewan, Mark R. | Fedurco, Milan | Fraser, Louise J. | Fajardo, Karin V. Fuentes | Furey, W. Scott | George, David | Gietzen, Kimberley J. | Goddard, Colin P. | Golda, George S. | Granieri, Philip A. | Green, David E. | Gustafson, David L. | Hansen, Nancy F. | Harnish, Kevin | Haudenschild, Christian D. | Heyer, Narinder I. | Hims, Matthew M. | Ho, Johnny T. | Horgan, Adrian M. | Hoschler, Katya | Hurwitz, Steve | Ivanov, Denis V. | Johnson, Maria Q. | James, Terena | Jones, T. A. Huw | Kang, Gyoung-Dong | Kerelska, Tzvetana H. | Kersey, Alan D. | Khrebtukova, Irina | Kindwall, Alex P. | Kingsbury, Zoya | Kokko-Gonzales, Paula I. | Kumar, Anil | Laurent, Marc A. | Lawley, Cynthia T. | Lee, Sarah E. | Lee, Xavier | Liao, Arnold K. | Loch, Jennifer A. | Lok, Mitch | Luo, Shujun | Mammen, Radhika M. | Martin, John W. | McCauley, Patrick G. | McNitt, Paul | Mehta, Parul | Moon, Keith W. | Mullens, Joe W. | Newington, Taksina | Ning, Zemin | Ng, Bee Ling | Novo, Sonia M. | O'Neill, Michael J. | Osborne, Mark A. | Osnowski, Andrew | Ostadan, Omead | Paraschos, Lambros L. | Pickering, Lea | Pike, Andrew C. | Pike, Alger C. | Pinkard, D. Chris | Pliskin, Daniel P. | Podhasky, Joe | Quijano, Victor J. | Raczy, Come | Rae, Vicki H. | Rawlings, Stephen R. | Rodriguez, Ana Chiva | Roe, Phyllida M. | Rogers, John | Rogert Bacigalupo, Maria C. | Romanov, Nikolai | Romieu, Anthony | Roth, Rithy K. | Rourke, Natalie J. | Ruediger, Silke T. | Rusman, Eli | Sanches-Kuiper, Raquel M. | Schenker, Martin R. | Seoane, Josefina M. | Shaw, Richard J. | Shiver, Mitch K. | Short, Steven W. | Sizto, Ning L. | Sluis, Johannes P. | Smith, Melanie A. | Sohna, Jean Ernest Sohna | Spence, Eric J. | Stevens, Kim | Sutton, Neil | Szajkowski, Lukasz | Tregidgo, Carolyn L. | Turcatti, Gerardo | vandeVondele, Stephanie | Verhovsky, Yuli | Virk, Selene M. | Wakelin, Suzanne | Walcott, Gregory C. | Wang, Jingwen | Worsley, Graham J. | Yan, Juying | Yau, Ling | Zuerlein, Mike | Rogers, Jane | Mullikin, James C. | Hurles, Matthew E. | McCooke, Nick J. | West, John S. | Oaks, Frank L. | Lundberg, Peter L. | Klenerman, David | Durbin, Richard | Smith, Anthony J.
Nature  2008;456(7218):53-59.
doi:10.1038/nature07517
PMCID: PMC2581791  PMID: 18987734
3.  A Validated Tumorgraft Model Reveals Activity of Dovitinib Against Renal Cell Carcinoma 
Science translational medicine  2012;4(137):137ra75.
Most anticancer drugs entering clinical trials fail to achieve approval from the US FDA. Drug development is hampered by the lack of preclinical models with therapeutic predictive value. Herein, we report the development and validation of a tumorgraft model of renal cell carcinoma (RCC) and its application to the evaluation of an experimental drug. Tumor samples from 94 patients were implanted in the kidney of mice without additives or disaggregation. Tumors from 35 patients formed tumorgrafts, and 16 stable lines were established. Samples from metastatic sites engrafted at high frequency, and stable engraftment of primary tumors in mice correlated with decreased patient survival suggesting that tumor growth in mice may reveal the acquisition by the tumor of an ability to thrive at distant sites and metastasize. Tumorgrafts retained the histology, gene expression, DNA copy number alterations, and over 90% of the protein-coding gene mutations of the corresponding tumors. As determined by the induction of hypercalcemia in tumorgraft-bearing mice, tumorgrafts were able to act on the host causing paraneoplastic syndromes. In studies simulating drug exposures in patients, RCC tumorgraft growth was inhibited by sunitinib and sirolimus (into which temsirolimus is converted in humans), but not by erlotinib, which was used as a control. Dovitinib, a drug in clinical development, showed greater activity than sunitinib and sirolimus. The routine incorporation of models recapitulating the molecular genetics and drug sensitivities of human tumors into preclinical programs has the potential to improve oncology drug development.
doi:10.1126/scitranslmed.3003643
PMCID: PMC3570965  PMID: 22674553
xenograft; tumor graft; orthotopic; PK; NOD/SCID; kidney cancer; clear-cell renal cell carcinoma
4.  Genome Sequencing and Analysis of the Tasmanian Devil and Its Transmissible Cancer 
Cell  2012;148(4):780-791.
Summary
The Tasmanian devil (Sarcophilus harrisii), the largest marsupial carnivore, is endangered due to a transmissible facial cancer spread by direct transfer of living cancer cells through biting. Here we describe the sequencing, assembly, and annotation of the Tasmanian devil genome and whole-genome sequences for two geographically distant subclones of the cancer. Genomic analysis suggests that the cancer first arose from a female Tasmanian devil and that the clone has subsequently genetically diverged during its spread across Tasmania. The devil cancer genome contains more than 17,000 somatic base substitution mutations and bears the imprint of a distinct mutational process. Genotyping of somatic mutations in 104 geographically and temporally distributed Tasmanian devil tumors reveals the pattern of evolution and spread of this parasitic clonal lineage, with evidence of a selective sweep in one geographical area and persistence of parallel lineages in other populations.
PaperClip
Graphical Abstract
Highlights
► Whole-genome sequences of the Tasmanian devil and two distant cancer subclones ► The Tasmanian devil cancer lineage originated recently in a female devil ► The devil cancer genome is relatively stable despite ongoing evolution ► Clonal divergence and geographic spread elucidated through patterns of mutation
Whole-genome sequences of the Tasmanian devil and two devil cancer subclones suggest that the cancer first arose from a female devil and that the clone has subsequently genetically diverged during its spread across Tasmania.
doi:10.1016/j.cell.2011.11.065
PMCID: PMC3281993  PMID: 22341448
5.  Accurate Whole Human Genome Sequencing using Reversible Terminator Chemistry 
Bentley, David R. | Balasubramanian, Shankar | Swerdlow, Harold P. | Smith, Geoffrey P. | Milton, John | Brown, Clive G. | Hall, Kevin P. | Evers, Dirk J. | Barnes, Colin L. | Bignell, Helen R. | Boutell, Jonathan M. | Bryant, Jason | Carter, Richard J. | Cheetham, R. Keira | Cox, Anthony J. | Ellis, Darren J. | Flatbush, Michael R. | Gormley, Niall A. | Humphray, Sean J. | Irving, Leslie J. | Karbelashvili, Mirian S. | Kirk, Scott M. | Li, Heng | Liu, Xiaohai | Maisinger, Klaus S. | Murray, Lisa J. | Obradovic, Bojan | Ost, Tobias | Parkinson, Michael L. | Pratt, Mark R. | Rasolonjatovo, Isabelle M. J. | Reed, Mark T. | Rigatti, Roberto | Rodighiero, Chiara | Ross, Mark T. | Sabot, Andrea | Sankar, Subramanian V. | Scally, Aylwyn | Schroth, Gary P. | Smith, Mark E. | Smith, Vincent P. | Spiridou, Anastassia | Torrance, Peta E. | Tzonev, Svilen S. | Vermaas, Eric H. | Walter, Klaudia | Wu, Xiaolin | Zhang, Lu | Alam, Mohammed D. | Anastasi, Carole | Aniebo, Ify C. | Bailey, David M. D. | Bancarz, Iain R. | Banerjee, Saibal | Barbour, Selena G. | Baybayan, Primo A. | Benoit, Vincent A. | Benson, Kevin F. | Bevis, Claire | Black, Phillip J. | Boodhun, Asha | Brennan, Joe S. | Bridgham, John A. | Brown, Rob C. | Brown, Andrew A. | Buermann, Dale H. | Bundu, Abass A. | Burrows, James C. | Carter, Nigel P. | Castillo, Nestor | Catenazzi, Maria Chiara E. | Chang, Simon | Cooley, R. Neil | Crake, Natasha R. | Dada, Olubunmi O. | Diakoumakos, Konstantinos D. | Dominguez-Fernandez, Belen | Earnshaw, David J. | Egbujor, Ugonna C. | Elmore, David W. | Etchin, Sergey S. | Ewan, Mark R. | Fedurco, Milan | Fraser, Louise J. | Fuentes Fajardo, Karin V. | Furey, W. Scott | George, David | Gietzen, Kimberley J. | Goddard, Colin P. | Golda, George S. | Granieri, Philip A. | Green, David E. | Gustafson, David L. | Hansen, Nancy F. | Harnish, Kevin | Haudenschild, Christian D. | Heyer, Narinder I. | Hims, Matthew M. | Ho, Johnny T. | Horgan, Adrian M. | Hoschler, Katya | Hurwitz, Steve | Ivanov, Denis V. | Johnson, Maria Q. | James, Terena | Jones, T. A. Huw | Kang, Gyoung-Dong | Kerelska, Tzvetana H. | Kersey, Alan D. | Khrebtukova, Irina | Kindwall, Alex P. | Kingsbury, Zoya | Kokko-Gonzales, Paula I. | Kumar, Anil | Laurent, Marc A. | Lawley, Cynthia T. | Lee, Sarah E. | Lee, Xavier | Liao, Arnold K. | Loch, Jennifer A. | Lok, Mitch | Luo, Shujun | Mammen, Radhika M. | Martin, John W. | McCauley, Patrick G. | McNitt, Paul | Mehta, Parul | Moon, Keith W. | Mullens, Joe W. | Newington, Taksina | Ning, Zemin | Ling Ng, Bee | Novo, Sonia M. | O'Neill, Michael J. | Osborne, Mark A. | Osnowski, Andrew | Ostadan, Omead | Paraschos, Lambros L. | Pickering, Lea | Pike, Andrew C. | Pike, Alger C. | Pinkard, D. Chris | Pliskin, Daniel P. | Podhasky, Joe | Quijano, Victor J. | Raczy, Come | Rae, Vicki H. | Rawlings, Stephen R. | Rodriguez, Ana Chiva | Roe, Phyllida M. | Rogers, John | Rogert Bacigalupo, Maria C. | Romanov, Nikolai | Romieu, Anthony | Roth, Rithy K. | Rourke, Natalie J. | Ruediger, Silke T. | Rusman, Eli | Sanches-Kuiper, Raquel M. | Schenker, Martin R. | Seoane, Josefina M. | Shaw, Richard J. | Shiver, Mitch K. | Short, Steven W. | Sizto, Ning L. | Sluis, Johannes P. | Smith, Melanie A. | Sohna Sohna, Jean Ernest | Spence, Eric J. | Stevens, Kim | Sutton, Neil | Szajkowski, Lukasz | Tregidgo, Carolyn L. | Turcatti, Gerardo | vandeVondele, Stephanie | Verhovsky, Yuli | Virk, Selene M. | Wakelin, Suzanne | Walcott, Gregory C. | Wang, Jingwen | Worsley, Graham J. | Yan, Juying | Yau, Ling | Zuerlein, Mike | Rogers, Jane | Mullikin, James C. | Hurles, Matthew E. | McCooke, Nick J. | West, John S. | Oaks, Frank L. | Lundberg, Peter L. | Klenerman, David | Durbin, Richard | Smith, Anthony J.
Nature  2008;456(7218):53-59.
DNA sequence information underpins genetic research, enabling discoveries of important biological or medical benefit. Sequencing projects have traditionally employed long (400–800 bp) reads, but the existence of reference sequences for the human and many other genomes makes it possible to develop new, fast approaches to re-sequencing, whereby shorter reads are compared to a reference to identify intra-species genetic variation. We report an approach that generates several billion bases of accurate nucleotide sequence per experiment at low cost. Single molecules of DNA are attached to a flat surface, amplified in situ and used as templates for synthetic sequencing with fluorescent reversible terminator deoxyribonucleotides. Images of the surface are analysed to generate high quality sequence. We demonstrate application of this approach to human genome sequencing on flow-sorted X chromosomes and then scale the approach to determine the genome sequence of a male Yoruba from Ibadan, Nigeria. We build an accurate consensus sequence from >30x average depth of paired 35-base reads. We characterise four million SNPs and four hundred thousand structural variants, many of which are previously unknown. Our approach is effective for accurate, rapid and economical whole genome re-sequencing and many other biomedical applications.
doi:10.1038/nature07517
PMCID: PMC2581791  PMID: 18987734
6.  A comprehensive catalogue of somatic mutations from a human cancer genome 
Nature  2009;463(7278):191-196.
All cancers carry somatic mutations. A subset of these somatic alterations, termed driver mutations, confer selective growth advantage and are implicated in cancer development, whereas the remainder are passengers. Here we have sequenced the genomes of a malignant melanoma and a lymphoblastoid cell line from the same person, providing the first comprehensive catalogue of somatic mutations from an individual cancer. The catalogue provides remarkable insights into the forces that have shaped this cancer genome. The dominant mutational signature reflects DNA damage due to ultraviolet light exposure, a known risk factor for malignant melanoma, whereas the uneven distribution of mutations across the genome, with a lower prevalence in gene footprints, indicates that DNA repair has been preferentially deployed towards transcribed regions. The results illustrate the power of a cancer genome sequence to reveal traces of the DNA damage, repair, mutation and selection processes that were operative years before the cancer became symptomatic.
doi:10.1038/nature08658
PMCID: PMC3145108  PMID: 20016485
7.  The DNA sequence of the human X chromosome 
Ross, Mark T. | Grafham, Darren V. | Coffey, Alison J. | Scherer, Steven | McLay, Kirsten | Muzny, Donna | Platzer, Matthias | Howell, Gareth R. | Burrows, Christine | Bird, Christine P. | Frankish, Adam | Lovell, Frances L. | Howe, Kevin L. | Ashurst, Jennifer L. | Fulton, Robert S. | Sudbrak, Ralf | Wen, Gaiping | Jones, Matthew C. | Hurles, Matthew E. | Andrews, T. Daniel | Scott, Carol E. | Searle, Stephen | Ramser, Juliane | Whittaker, Adam | Deadman, Rebecca | Carter, Nigel P. | Hunt, Sarah E. | Chen, Rui | Cree, Andrew | Gunaratne, Preethi | Havlak, Paul | Hodgson, Anne | Metzker, Michael L. | Richards, Stephen | Scott, Graham | Steffen, David | Sodergren, Erica | Wheeler, David A. | Worley, Kim C. | Ainscough, Rachael | Ambrose, Kerrie D. | Ansari-Lari, M. Ali | Aradhya, Swaroop | Ashwell, Robert I. S. | Babbage, Anne K. | Bagguley, Claire L. | Ballabio, Andrea | Banerjee, Ruby | Barker, Gary E. | Barlow, Karen F. | Barrett, Ian P. | Bates, Karen N. | Beare, David M. | Beasley, Helen | Beasley, Oliver | Beck, Alfred | Bethel, Graeme | Blechschmidt, Karin | Brady, Nicola | Bray-Allen, Sarah | Bridgeman, Anne M. | Brown, Andrew J. | Brown, Mary J. | Bonnin, David | Bruford, Elspeth A. | Buhay, Christian | Burch, Paula | Burford, Deborah | Burgess, Joanne | Burrill, Wayne | Burton, John | Bye, Jackie M. | Carder, Carol | Carrel, Laura | Chako, Joseph | Chapman, Joanne C. | Chavez, Dean | Chen, Ellson | Chen, Guan | Chen, Yuan | Chen, Zhijian | Chinault, Craig | Ciccodicola, Alfredo | Clark, Sue Y. | Clarke, Graham | Clee, Chris M. | Clegg, Sheila | Clerc-Blankenburg, Kerstin | Clifford, Karen | Cobley, Vicky | Cole, Charlotte G. | Conquer, Jen S. | Corby, Nicole | Connor, Richard E. | David, Robert | Davies, Joy | Davis, Clay | Davis, John | Delgado, Oliver | DeShazo, Denise | Dhami, Pawandeep | Ding, Yan | Dinh, Huyen | Dodsworth, Steve | Draper, Heather | Dugan-Rocha, Shannon | Dunham, Andrew | Dunn, Matthew | Durbin, K. James | Dutta, Ireena | Eades, Tamsin | Ellwood, Matthew | Emery-Cohen, Alexandra | Errington, Helen | Evans, Kathryn L. | Faulkner, Louisa | Francis, Fiona | Frankland, John | Fraser, Audrey E. | Galgoczy, Petra | Gilbert, James | Gill, Rachel | Glöckner, Gernot | Gregory, Simon G. | Gribble, Susan | Griffiths, Coline | Grocock, Russell | Gu, Yanghong | Gwilliam, Rhian | Hamilton, Cerissa | Hart, Elizabeth A. | Hawes, Alicia | Heath, Paul D. | Heitmann, Katja | Hennig, Steffen | Hernandez, Judith | Hinzmann, Bernd | Ho, Sarah | Hoffs, Michael | Howden, Phillip J. | Huckle, Elizabeth J. | Hume, Jennifer | Hunt, Paul J. | Hunt, Adrienne R. | Isherwood, Judith | Jacob, Leni | Johnson, David | Jones, Sally | de Jong, Pieter J. | Joseph, Shirin S. | Keenan, Stephen | Kelly, Susan | Kershaw, Joanne K. | Khan, Ziad | Kioschis, Petra | Klages, Sven | Knights, Andrew J. | Kosiura, Anna | Kovar-Smith, Christie | Laird, Gavin K. | Langford, Cordelia | Lawlor, Stephanie | Leversha, Margaret | Lewis, Lora | Liu, Wen | Lloyd, Christine | Lloyd, David M. | Loulseged, Hermela | Loveland, Jane E. | Lovell, Jamieson D. | Lozado, Ryan | Lu, Jing | Lyne, Rachael | Ma, Jie | Maheshwari, Manjula | Matthews, Lucy H. | McDowall, Jennifer | McLaren, Stuart | McMurray, Amanda | Meidl, Patrick | Meitinger, Thomas | Milne, Sarah | Miner, George | Mistry, Shailesh L. | Morgan, Margaret | Morris, Sidney | Müller, Ines | Mullikin, James C. | Nguyen, Ngoc | Nordsiek, Gabriele | Nyakatura, Gerald | O’Dell, Christopher N. | Okwuonu, Geoffery | Palmer, Sophie | Pandian, Richard | Parker, David | Parrish, Julia | Pasternak, Shiran | Patel, Dina | Pearce, Alex V. | Pearson, Danita M. | Pelan, Sarah E. | Perez, Lesette | Porter, Keith M. | Ramsey, Yvonne | Reichwald, Kathrin | Rhodes, Susan | Ridler, Kerry A. | Schlessinger, David | Schueler, Mary G. | Sehra, Harminder K. | Shaw-Smith, Charles | Shen, Hua | Sheridan, Elizabeth M. | Shownkeen, Ratna | Skuce, Carl D. | Smith, Michelle L. | Sotheran, Elizabeth C. | Steingruber, Helen E. | Steward, Charles A. | Storey, Roy | Swann, R. Mark | Swarbreck, David | Tabor, Paul E. | Taudien, Stefan | Taylor, Tineace | Teague, Brian | Thomas, Karen | Thorpe, Andrea | Timms, Kirsten | Tracey, Alan | Trevanion, Steve | Tromans, Anthony C. | d’Urso, Michele | Verduzco, Daniel | Villasana, Donna | Waldron, Lenee | Wall, Melanie | Wang, Qiaoyan | Warren, James | Warry, Georgina L. | Wei, Xuehong | West, Anthony | Whitehead, Siobhan L. | Whiteley, Mathew N. | Wilkinson, Jane E. | Willey, David L. | Williams, Gabrielle | Williams, Leanne | Williamson, Angela | Williamson, Helen | Wilming, Laurens | Woodmansey, Rebecca L. | Wray, Paul W. | Yen, Jennifer | Zhang, Jingkun | Zhou, Jianling | Zoghbi, Huda | Zorilla, Sara | Buck, David | Reinhardt, Richard | Poustka, Annemarie | Rosenthal, André | Lehrach, Hans | Meindl, Alfons | Minx, Patrick J. | Hillier, LaDeana W. | Willard, Huntington F. | Wilson, Richard K. | Waterston, Robert H. | Rice, Catherine M. | Vaudin, Mark | Coulson, Alan | Nelson, David L. | Weinstock, George | Sulston, John E. | Durbin, Richard | Hubbard, Tim | Gibbs, Richard A. | Beck, Stephan | Rogers, Jane | Bentley, David R.
Nature  2005;434(7031):325-337.
The human X chromosome has a unique biology that was shaped by its evolution as the sex chromosome shared by males and females. We have determined 99.3% of the euchromatic sequence of the X chromosome. Our analysis illustrates the autosomal origin of the mammalian sex chromosomes, the stepwise process that led to the progressive loss of recombination between X and Y, and the extent of subsequent degradation of the Y chromosome. LINE1 repeat elements cover one-third of the X chromosome, with a distribution that is consistent with their proposed role as way stations in the process of X-chromosome inactivation. We found 1,098 genes in the sequence, of which 99 encode proteins expressed in testis and in various tumour types. A disproportionately high number of mendelian diseases are documented for the X chromosome. Of this number, 168 have been explained by mutations in 113 X-linked genes, which in many cases were characterized with the aid of the DNA sequence.
doi:10.1038/nature03440
PMCID: PMC2665286  PMID: 15772651

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