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1.  A genome-wide association study of marginal zone lymphoma shows association to the HLA region 
Vijai, Joseph | Wang, Zhaoming | Berndt, Sonja I. | Skibola, Christine F. | Slager, Susan L. | de Sanjose, Silvia | Melbye, Mads | Glimelius, Bengt | Bracci, Paige M. | Conde, Lucia | Birmann, Brenda M. | Wang, Sophia S. | Brooks-Wilson, Angela R. | Lan, Qing | de Bakker, Paul I. W. | Vermeulen, Roel C. H. | Portlock, Carol | Ansell, Stephen M. | Link, Brian K. | Riby, Jacques | North, Kari E. | Gu, Jian | Hjalgrim, Henrik | Cozen, Wendy | Becker, Nikolaus | Teras, Lauren R. | Spinelli, John J. | Turner, Jenny | Zhang, Yawei | Purdue, Mark P. | Giles, Graham G. | Kelly, Rachel S. | Zeleniuch-Jacquotte, Anne | Ennas, Maria Grazia | Monnereau, Alain | Bertrand, Kimberly A. | Albanes, Demetrius | Lightfoot, Tracy | Yeager, Meredith | Chung, Charles C. | Burdett, Laurie | Hutchinson, Amy | Lawrence, Charles | Montalvan, Rebecca | Liang, Liming | Huang, Jinyan | Ma, Baoshan | Villano, Danylo J. | Maria, Ann | Corines, Marina | Thomas, Tinu | Novak, Anne J. | Dogan, Ahmet | Liebow, Mark | Thompson, Carrie A. | Witzig, Thomas E. | Habermann, Thomas M. | Weiner, George J. | Smith, Martyn T. | Holly, Elizabeth A. | Jackson, Rebecca D. | Tinker, Lesley F. | Ye, Yuanqing | Adami, Hans-Olov | Smedby, Karin E. | De Roos, Anneclaire J. | Hartge, Patricia | Morton, Lindsay M. | Severson, Richard K. | Benavente, Yolanda | Boffetta, Paolo | Brennan, Paul | Foretova, Lenka | Maynadie, Marc | McKay, James | Staines, Anthony | Diver, W. Ryan | Vajdic, Claire M. | Armstrong, Bruce K. | Kricker, Anne | Zheng, Tongzhang | Holford, Theodore R. | Severi, Gianluca | Vineis, Paolo | Ferri, Giovanni M. | Ricco, Rosalia | Miligi, Lucia | Clavel, Jacqueline | Giovannucci, Edward | Kraft, Peter | Virtamo, Jarmo | Smith, Alex | Kane, Eleanor | Roman, Eve | Chiu, Brian C. H. | Fraumeni, Joseph F. | Wu, Xifeng | Cerhan, James R. | Offit, Kenneth | Chanock, Stephen J. | Rothman, Nathaniel | Nieters, Alexandra
Nature Communications  2015;6:5751.
Marginal zone lymphoma (MZL) is the third most common subtype of B-cell non-Hodgkin lymphoma. Here we perform a two-stage GWAS of 1,281 MZL cases and 7,127 controls of European ancestry and identify two independent loci near BTNL2 (rs9461741, P=3.95 × 10−15) and HLA-B (rs2922994, P=2.43 × 10−9) in the HLA region significantly associated with MZL risk. This is the first evidence that genetic variation in the major histocompatibility complex influences MZL susceptibility.
Marginal zone lymphoma (MZL) is a common subtype of B-cell non-Hodgkin lymphoma. Here the authors carry out a two-stage genome-wide association study in over 8,000 Europeans and identify two new MZL risk loci at chromosome 6p, implicating the major histocompatibility complex in the disease for the first time.
doi:10.1038/ncomms6751
PMCID: PMC4287989  PMID: 25569183
2.  Genome-wide Association Study Identifies Multiple Risk Loci for Chronic Lymphocytic Leukemia 
Berndt, Sonja I. | Skibola, Christine F. | Joseph, Vijai | Camp, Nicola J. | Nieters, Alexandra | Wang, Zhaoming | Cozen, Wendy | Monnereau, Alain | Wang, Sophia S. | Kelly, Rachel S. | Lan, Qing | Teras, Lauren R. | Chatterjee, Nilanjan | Chung, Charles C. | Yeager, Meredith | Brooks-Wilson, Angela R. | Hartge, Patricia | Purdue, Mark P. | Birmann, Brenda M. | Armstrong, Bruce K. | Cocco, Pierluigi | Zhang, Yawei | Severi, Gianluca | Zeleniuch-Jacquotte, Anne | Lawrence, Charles | Burdette, Laurie | Yuenger, Jeffrey | Hutchinson, Amy | Jacobs, Kevin B. | Call, Timothy G. | Shanafelt, Tait D. | Novak, Anne J. | Kay, Neil E. | Liebow, Mark | Wang, Alice H. | Smedby, Karin E | Adami, Hans-Olov | Melbye, Mads | Glimelius, Bengt | Chang, Ellen T. | Glenn, Martha | Curtin, Karen | Cannon-Albright, Lisa A. | Jones, Brandt | Diver, W. Ryan | Link, Brian K. | Weiner, George J. | Conde, Lucia | Bracci, Paige M. | Riby, Jacques | Holly, Elizabeth A. | Smith, Martyn T. | Jackson, Rebecca D. | Tinker, Lesley F. | Benavente, Yolanda | Becker, Nikolaus | Boffetta, Paolo | Brennan, Paul | Foretova, Lenka | Maynadie, Marc | McKay, James | Staines, Anthony | Rabe, Kari G. | Achenbach, Sara J. | Vachon, Celine M. | Goldin, Lynn R | Strom, Sara S. | Lanasa, Mark C. | Spector, Logan G. | Leis, Jose F. | Cunningham, Julie M. | Weinberg, J. Brice | Morrison, Vicki A. | Caporaso, Neil E. | Norman, Aaron D. | Linet, Martha S. | De Roos, Anneclaire J. | Morton, Lindsay M. | Severson, Richard K. | Riboli, Elio | Vineis, Paolo | Kaaks, Rudolph | Trichopoulos, Dimitrios | Masala, Giovanna | Weiderpass, Elisabete | Chirlaque, María-Dolores | Vermeulen, Roel C H | Travis, Ruth C. | Giles, Graham G. | Albanes, Demetrius | Virtamo, Jarmo | Weinstein, Stephanie | Clavel, Jacqueline | Zheng, Tongzhang | Holford, Theodore R | Offit, Kenneth | Zelenetz, Andrew | Klein, Robert J. | Spinelli, John J. | Bertrand, Kimberly A. | Laden, Francine | Giovannucci, Edward | Kraft, Peter | Kricker, Anne | Turner, Jenny | Vajdic, Claire M. | Ennas, Maria Grazia | Ferri, Giovanni M. | Miligi, Lucia | Liang, Liming | Sampson, Joshua | Crouch, Simon | Park, Ju-hyun | North, Kari E. | Cox, Angela | Snowden, John A. | Wright, Josh | Carracedo, Angel | Lopez-Otin, Carlos | Bea, Silvia | Salaverria, Itziar | Martin, David | Campo, Elias | Fraumeni, Joseph F. | de Sanjose, Silvia | Hjalgrim, Henrik | Cerhan, James R. | Chanock, Stephen J. | Rothman, Nathaniel | Slager, Susan L.
Nature genetics  2013;45(8):868-876.
doi:10.1038/ng.2652
PMCID: PMC3729927  PMID: 23770605
3.  Epigenetic analysis leads to identification of HNF1B as a subtype-specific susceptibility gene for ovarian cancer 
Shen, Hui | Fridley, Brooke L. | Song, Honglin | Lawrenson, Kate | Cunningham, Julie M. | Ramus, Susan J. | Cicek, Mine S. | Tyrer, Jonathan | Stram, Douglas | Larson, Melissa C. | Köbel, Martin | Ziogas, Argyrios | Zheng, Wei | Yang, Hannah P. | Wu, Anna H. | Wozniak, Eva L. | Woo, Yin Ling | Winterhoff, Boris | Wik, Elisabeth | Whittemore, Alice S. | Wentzensen, Nicolas | Weber, Rachel Palmieri | Vitonis, Allison F. | Vincent, Daniel | Vierkant, Robert A. | Vergote, Ignace | Van Den Berg, David | Van Altena, Anne M. | Tworoger, Shelley S. | Thompson, Pamela J. | Tessier, Daniel C. | Terry, Kathryn L. | Teo, Soo-Hwang | Templeman, Claire | Stram, Daniel O. | Southey, Melissa C. | Sieh, Weiva | Siddiqui, Nadeem | Shvetsov, Yurii B. | Shu, Xiao-Ou | Shridhar, Viji | Wang-Gohrke, Shan | Severi, Gianluca | Schwaab, Ira | Salvesen, Helga B. | Rzepecka, Iwona K. | Runnebaum, Ingo B. | Rossing, Mary Anne | Rodriguez-Rodriguez, Lorna | Risch, Harvey A. | Renner, Stefan P. | Poole, Elizabeth M. | Pike, Malcolm C. | Phelan, Catherine M. | Pelttari, Liisa M. | Pejovic, Tanja | Paul, James | Orlow, Irene | Omar, Siti Zawiah | Olson, Sara H. | Odunsi, Kunle | Nickels, Stefan | Nevanlinna, Heli | Ness, Roberta B. | Narod, Steven A. | Nakanishi, Toru | Moysich, Kirsten B. | Monteiro, Alvaro N.A. | Moes-Sosnowska, Joanna | Modugno, Francesmary | Menon, Usha | McLaughlin, John R. | McGuire, Valerie | Matsuo, Keitaro | Adenan, Noor Azmi Mat | Massuger, Leon F.A. G. | Lurie, Galina | Lundvall, Lene | Lubiński, Jan | Lissowska, Jolanta | Levine, Douglas A. | Leminen, Arto | Lee, Alice W. | Le, Nhu D. | Lambrechts, Sandrina | Lambrechts, Diether | Kupryjanczyk, Jolanta | Krakstad, Camilla | Konecny, Gottfried E. | Kjaer, Susanne Krüger | Kiemeney, Lambertus A. | Kelemen, Linda E. | Keeney, Gary L. | Karlan, Beth Y. | Karevan, Rod | Kalli, Kimberly R. | Kajiyama, Hiroaki | Ji, Bu-Tian | Jensen, Allan | Jakubowska, Anna | Iversen, Edwin | Hosono, Satoyo | Høgdall, Claus K. | Høgdall, Estrid | Hoatlin, Maureen | Hillemanns, Peter | Heitz, Florian | Hein, Rebecca | Harter, Philipp | Halle, Mari K. | Hall, Per | Gronwald, Jacek | Gore, Martin | Goodman, Marc T. | Giles, Graham G. | Gentry-Maharaj, Aleksandra | Garcia-Closas, Montserrat | Flanagan, James M. | Fasching, Peter A. | Ekici, Arif B. | Edwards, Robert | Eccles, Diana | Easton, Douglas F. | Dürst, Matthias | du Bois, Andreas | Dörk, Thilo | Doherty, Jennifer A. | Despierre, Evelyn | Dansonka-Mieszkowska, Agnieszka | Cybulski, Cezary | Cramer, Daniel W. | Cook, Linda S. | Chen, Xiaoqing | Charbonneau, Bridget | Chang-Claude, Jenny | Campbell, Ian | Butzow, Ralf | Bunker, Clareann H. | Brueggmann, Doerthe | Brown, Robert | Brooks-Wilson, Angela | Brinton, Louise A. | Bogdanova, Natalia | Block, Matthew S. | Benjamin, Elizabeth | Beesley, Jonathan | Beckmann, Matthias W. | Bandera, Elisa V. | Baglietto, Laura | Bacot, François | Armasu, Sebastian M. | Antonenkova, Natalia | Anton-Culver, Hoda | Aben, Katja K. | Liang, Dong | Wu, Xifeng | Lu, Karen | Hildebrandt, Michelle A.T. | Schildkraut, Joellen M. | Sellers, Thomas A. | Huntsman, David | Berchuck, Andrew | Chenevix-Trench, Georgia | Gayther, Simon A. | Pharoah, Paul D.P. | Laird, Peter W. | Goode, Ellen L. | Pearce, Celeste Leigh
Nature communications  2013;4:10.1038/ncomms2629.
HNF1B is overexpressed in clear cell epithelial ovarian cancer, and we observed epigenetic silencing in serous epithelial ovarian cancer, leading us to hypothesize that variation in this gene differentially associates with epithelial ovarian cancer risk according to histological subtype. Here we comprehensively map variation in HNF1B with respect to epithelial ovarian cancer risk and analyse DNA methylation and expression profiles across histological subtypes. Different single-nucleotide polymorphisms associate with invasive serous (rs7405776 odds ratio (OR) = 1.13, P = 3.1 × 10−10) and clear cell (rs11651755 OR = 0.77, P = 1.6 × 10−8) epithelial ovarian cancer. Risk alleles for the serous subtype associate with higher HNF1B-promoter methylation in these tumours. Unmethylated, expressed HNF1B, primarily present in clear cell tumours, coincides with a CpG island methylator phenotype affecting numerous other promoters throughout the genome. Different variants in HNF1B associate with risk of serous and clear cell epithelial ovarian cancer; DNA methylation and expression patterns are also notably distinct between these subtypes. These findings underscore distinct mechanisms driving different epithelial ovarian cancer histological subtypes.
doi:10.1038/ncomms2629
PMCID: PMC3848248  PMID: 23535649
4.  Inherited common variants in mitochondrial DNA and invasive serous epithelial ovarian cancer risk 
BMC Research Notes  2013;6:425.
Background
Mitochondria are the site of oxidative phosphorylation, a process which generates reactive oxygen species (ROS). Elevated ROS levels can lead to oxidative stress, a cellular state implicated in carcinogenesis. It is hypothesized that alternations in mitochondrial (MT) DNA, including heritable MT single nucleotide polymorphisms (MT-SNPs), have the potential to change the capacity of MT function, leading to increased oxidative stress and cancer risk. We investigated if common MT-SNPs and/or haplogroups and are associated with invasive serous ovarian cancer (OvCa) risk.
Methods
A panel of 64 MT-SNPs designed to tag all common variation in the European MT genome (minor allele frequency (MAF) >1%, r^2 >0.8) was genotyped in study participants of European descent using the Sequenom MassARRAY iPlex Gold® system (Sequenom Inc, CA, USA). Invasive serous OvCa cases (n = 405) and frequency age-matched controls (n = 445) were drawn from a population-based case-control study of OvCa in western Canada. Binary logistic regression was used to estimate the odds ratio (OR) and 95% confidence intervals (C.I.) for carriage of the minor versus major allele by case-control status. MitoTool was used to test the relationship between European haplogroup status and case-control status using Fisher’s exact test.
Results
The most significant disease-SNP association was for rs2857285, a synonymous MT-SNP in ND4 (OR = 4.84, 95% CI: 1.03–22.68, P = 0.045). After adjustment for multiple testing using a Bonferroni correction of the Type 1 error this MT-SNP was not significant. No other MT-SNP had a P-value < 0.05. European haplogroup status was not associated with case status. Most MT-SNPs (73%) genotyped had a MAF <5%.
Conclusion
Common European MT-SNPs (MAF > 5%) and haplogroups were not associated with invasive serous OvCa risk in this study; however, most European MT-SNPs have a low MAF (<5%), which we were underpowered to adequately assess. Larger studies are needed to clarify the role of low MAF MT-SNPs (MAF < 5%) in invasive serous OvCa risk.
doi:10.1186/1756-0500-6-425
PMCID: PMC3854008  PMID: 24148579
Mitochondrial DNA; Single nucleotide polymorphism; Epithelial ovarian cancer; Serous ovarian cancer; Haplogroup; Heritable risk; European
5.  Multiple independent variants at the TERT locus are associated with telomere length and risks of breast and ovarian cancer 
Bojesen, Stig E | Pooley, Karen A | Johnatty, Sharon E | Beesley, Jonathan | Michailidou, Kyriaki | Tyrer, Jonathan P | Edwards, Stacey L | Pickett, Hilda A | Shen, Howard C | Smart, Chanel E | Hillman, Kristine M | Mai, Phuong L | Lawrenson, Kate | Stutz, Michael D | Lu, Yi | Karevan, Rod | Woods, Nicholas | Johnston, Rebecca L | French, Juliet D | Chen, Xiaoqing | Weischer, Maren | Nielsen, Sune F | Maranian, Melanie J | Ghoussaini, Maya | Ahmed, Shahana | Baynes, Caroline | Bolla, Manjeet K | Wang, Qin | Dennis, Joe | McGuffog, Lesley | Barrowdale, Daniel | Lee, Andrew | Healey, Sue | Lush, Michael | Tessier, Daniel C | Vincent, Daniel | Bacot, Françis | Vergote, Ignace | Lambrechts, Sandrina | Despierre, Evelyn | Risch, Harvey A | González-Neira, Anna | Rossing, Mary Anne | Pita, Guillermo | Doherty, Jennifer A | Álvarez, Nuria | Larson, Melissa C | Fridley, Brooke L | Schoof, Nils | Chang-Claude, Jenny | Cicek, Mine S | Peto, Julian | Kalli, Kimberly R | Broeks, Annegien | Armasu, Sebastian M | Schmidt, Marjanka K | Braaf, Linde M | Winterhoff, Boris | Nevanlinna, Heli | Konecny, Gottfried E | Lambrechts, Diether | Rogmann, Lisa | Guénel, Pascal | Teoman, Attila | Milne, Roger L | Garcia, Joaquin J | Cox, Angela | Shridhar, Vijayalakshmi | Burwinkel, Barbara | Marme, Frederik | Hein, Rebecca | Sawyer, Elinor J | Haiman, Christopher A | Wang-Gohrke, Shan | Andrulis, Irene L | Moysich, Kirsten B | Hopper, John L | Odunsi, Kunle | Lindblom, Annika | Giles, Graham G | Brenner, Hermann | Simard, Jacques | Lurie, Galina | Fasching, Peter A | Carney, Michael E | Radice, Paolo | Wilkens, Lynne R | Swerdlow, Anthony | Goodman, Marc T | Brauch, Hiltrud | García-Closas, Montserrat | Hillemanns, Peter | Winqvist, Robert | Dürst, Matthias | Devilee, Peter | Runnebaum, Ingo | Jakubowska, Anna | Lubinski, Jan | Mannermaa, Arto | Butzow, Ralf | Bogdanova, Natalia V | Dörk, Thilo | Pelttari, Liisa M | Zheng, Wei | Leminen, Arto | Anton-Culver, Hoda | Bunker, Clareann H | Kristensen, Vessela | Ness, Roberta B | Muir, Kenneth | Edwards, Robert | Meindl, Alfons | Heitz, Florian | Matsuo, Keitaro | du Bois, Andreas | Wu, Anna H | Harter, Philipp | Teo, Soo-Hwang | Schwaab, Ira | Shu, Xiao-Ou | Blot, William | Hosono, Satoyo | Kang, Daehee | Nakanishi, Toru | Hartman, Mikael | Yatabe, Yasushi | Hamann, Ute | Karlan, Beth Y | Sangrajrang, Suleeporn | Kjaer, Susanne Krüger | Gaborieau, Valerie | Jensen, Allan | Eccles, Diana | Høgdall, Estrid | Shen, Chen-Yang | Brown, Judith | Woo, Yin Ling | Shah, Mitul | Azmi, Mat Adenan Noor | Luben, Robert | Omar, Siti Zawiah | Czene, Kamila | Vierkant, Robert A | Nordestgaard, Børge G | Flyger, Henrik | Vachon, Celine | Olson, Janet E | Wang, Xianshu | Levine, Douglas A | Rudolph, Anja | Weber, Rachel Palmieri | Flesch-Janys, Dieter | Iversen, Edwin | Nickels, Stefan | Schildkraut, Joellen M | Silva, Isabel Dos Santos | Cramer, Daniel W | Gibson, Lorna | Terry, Kathryn L | Fletcher, Olivia | Vitonis, Allison F | van der Schoot, C Ellen | Poole, Elizabeth M | Hogervorst, Frans B L | Tworoger, Shelley S | Liu, Jianjun | Bandera, Elisa V | Li, Jingmei | Olson, Sara H | Humphreys, Keith | Orlow, Irene | Blomqvist, Carl | Rodriguez-Rodriguez, Lorna | Aittomäki, Kristiina | Salvesen, Helga B | Muranen, Taru A | Wik, Elisabeth | Brouwers, Barbara | Krakstad, Camilla | Wauters, Els | Halle, Mari K | Wildiers, Hans | Kiemeney, Lambertus A | Mulot, Claire | Aben, Katja K | Laurent-Puig, Pierre | van Altena, Anne M | Truong, Thérèse | Massuger, Leon F A G | Benitez, Javier | Pejovic, Tanja | Perez, Jose Ignacio Arias | Hoatlin, Maureen | Zamora, M Pilar | Cook, Linda S | Balasubramanian, Sabapathy P | Kelemen, Linda E | Schneeweiss, Andreas | Le, Nhu D | Sohn, Christof | Brooks-Wilson, Angela | Tomlinson, Ian | Kerin, Michael J | Miller, Nicola | Cybulski, Cezary | Henderson, Brian E | Menkiszak, Janusz | Schumacher, Fredrick | Wentzensen, Nicolas | Marchand, Loic Le | Yang, Hannah P | Mulligan, Anna Marie | Glendon, Gord | Engelholm, Svend Aage | Knight, Julia A | Høgdall, Claus K | Apicella, Carmel | Gore, Martin | Tsimiklis, Helen | Song, Honglin | Southey, Melissa C | Jager, Agnes | van den Ouweland, Ans M W | Brown, Robert | Martens, John W M | Flanagan, James M | Kriege, Mieke | Paul, James | Margolin, Sara | Siddiqui, Nadeem | Severi, Gianluca | Whittemore, Alice S | Baglietto, Laura | McGuire, Valerie | Stegmaier, Christa | Sieh, Weiva | Müller, Heiko | Arndt, Volker | Labrèche, France | Gao, Yu-Tang | Goldberg, Mark S | Yang, Gong | Dumont, Martine | McLaughlin, John R | Hartmann, Arndt | Ekici, Arif B | Beckmann, Matthias W | Phelan, Catherine M | Lux, Michael P | Permuth-Wey, Jenny | Peissel, Bernard | Sellers, Thomas A | Ficarazzi, Filomena | Barile, Monica | Ziogas, Argyrios | Ashworth, Alan | Gentry-Maharaj, Aleksandra | Jones, Michael | Ramus, Susan J | Orr, Nick | Menon, Usha | Pearce, Celeste L | Brüning, Thomas | Pike, Malcolm C | Ko, Yon-Dschun | Lissowska, Jolanta | Figueroa, Jonine | Kupryjanczyk, Jolanta | Chanock, Stephen J | Dansonka-Mieszkowska, Agnieszka | Jukkola-Vuorinen, Arja | Rzepecka, Iwona K | Pylkäs, Katri | Bidzinski, Mariusz | Kauppila, Saila | Hollestelle, Antoinette | Seynaeve, Caroline | Tollenaar, Rob A E M | Durda, Katarzyna | Jaworska, Katarzyna | Hartikainen, Jaana M | Kosma, Veli-Matti | Kataja, Vesa | Antonenkova, Natalia N | Long, Jirong | Shrubsole, Martha | Deming-Halverson, Sandra | Lophatananon, Artitaya | Siriwanarangsan, Pornthep | Stewart-Brown, Sarah | Ditsch, Nina | Lichtner, Peter | Schmutzler, Rita K | Ito, Hidemi | Iwata, Hiroji | Tajima, Kazuo | Tseng, Chiu-Chen | Stram, Daniel O | van den Berg, David | Yip, Cheng Har | Ikram, M Kamran | Teh, Yew-Ching | Cai, Hui | Lu, Wei | Signorello, Lisa B | Cai, Qiuyin | Noh, Dong-Young | Yoo, Keun-Young | Miao, Hui | Iau, Philip Tsau-Choong | Teo, Yik Ying | McKay, James | Shapiro, Charles | Ademuyiwa, Foluso | Fountzilas, George | Hsiung, Chia-Ni | Yu, Jyh-Cherng | Hou, Ming-Feng | Healey, Catherine S | Luccarini, Craig | Peock, Susan | Stoppa-Lyonnet, Dominique | Peterlongo, Paolo | Rebbeck, Timothy R | Piedmonte, Marion | Singer, Christian F | Friedman, Eitan | Thomassen, Mads | Offit, Kenneth | Hansen, Thomas V O | Neuhausen, Susan L | Szabo, Csilla I | Blanco, Ignacio | Garber, Judy | Narod, Steven A | Weitzel, Jeffrey N | Montagna, Marco | Olah, Edith | Godwin, Andrew K | Yannoukakos, Drakoulis | Goldgar, David E | Caldes, Trinidad | Imyanitov, Evgeny N | Tihomirova, Laima | Arun, Banu K | Campbell, Ian | Mensenkamp, Arjen R | van Asperen, Christi J | van Roozendaal, Kees E P | Meijers-Heijboer, Hanne | Collée, J Margriet | Oosterwijk, Jan C | Hooning, Maartje J | Rookus, Matti A | van der Luijt, Rob B | van Os, Theo A M | Evans, D Gareth | Frost, Debra | Fineberg, Elena | Barwell, Julian | Walker, Lisa | Kennedy, M John | Platte, Radka | Davidson, Rosemarie | Ellis, Steve D | Cole, Trevor | Paillerets, Brigitte Bressac-de | Buecher, Bruno | Damiola, Francesca | Faivre, Laurence | Frenay, Marc | Sinilnikova, Olga M | Caron, Olivier | Giraud, Sophie | Mazoyer, Sylvie | Bonadona, Valérie | Caux-Moncoutier, Virginie | Toloczko-Grabarek, Aleksandra | Gronwald, Jacek | Byrski, Tomasz | Spurdle, Amanda B | Bonanni, Bernardo | Zaffaroni, Daniela | Giannini, Giuseppe | Bernard, Loris | Dolcetti, Riccardo | Manoukian, Siranoush | Arnold, Norbert | Engel, Christoph | Deissler, Helmut | Rhiem, Kerstin | Niederacher, Dieter | Plendl, Hansjoerg | Sutter, Christian | Wappenschmidt, Barbara | Borg, Åke | Melin, Beatrice | Rantala, Johanna | Soller, Maria | Nathanson, Katherine L | Domchek, Susan M | Rodriguez, Gustavo C | Salani, Ritu | Kaulich, Daphne Gschwantler | Tea, Muy-Kheng | Paluch, Shani Shimon | Laitman, Yael | Skytte, Anne-Bine | Kruse, Torben A | Jensen, Uffe Birk | Robson, Mark | Gerdes, Anne-Marie | Ejlertsen, Bent | Foretova, Lenka | Savage, Sharon A | Lester, Jenny | Soucy, Penny | Kuchenbaecker, Karoline B | Olswold, Curtis | Cunningham, Julie M | Slager, Susan | Pankratz, Vernon S | Dicks, Ed | Lakhani, Sunil R | Couch, Fergus J | Hall, Per | Monteiro, Alvaro N A | Gayther, Simon A | Pharoah, Paul D P | Reddel, Roger R | Goode, Ellen L | Greene, Mark H | Easton, Douglas F | Berchuck, Andrew | Antoniou, Antonis C | Chenevix-Trench, Georgia | Dunning, Alison M
Nature genetics  2013;45(4):371-384e2.
TERT-locus single nucleotide polymorphisms (SNPs) and leucocyte telomere measures are reportedly associated with risks of multiple cancers. Using the iCOGs chip, we analysed ~480 TERT-locus SNPs in breast (n=103,991), ovarian (n=39,774) and BRCA1 mutation carrier (11,705) cancer cases and controls. 53,724 participants have leucocyte telomere measures. Most associations cluster into three independent peaks. Peak 1 SNP rs2736108 minor allele associates with longer telomeres (P=5.8×10−7), reduced estrogen receptor negative (ER-negative) (P=1.0×10−8) and BRCA1 mutation carrier (P=1.1×10−5) breast cancer risks, and altered promoter-assay signal. Peak 2 SNP rs7705526 minor allele associates with longer telomeres (P=2.3×10−14), increased low malignant potential ovarian cancer risk (P=1.3×10−15) and increased promoter activity. Peak 3 SNPs rs10069690 and rs2242652 minor alleles increase ER-negative (P=1.2×10−12) and BRCA1 mutation carrier (P=1.6×10−14) breast and invasive ovarian (P=1.3×10−11) cancer risks, but not via altered telomere length. The cancer-risk alleles of rs2242652 and rs10069690 respectively increase silencing and generate a truncated TERT splice-variant.
doi:10.1038/ng.2566
PMCID: PMC3670748  PMID: 23535731
6.  GWAS meta-analysis and replication identifies three new susceptibility loci for ovarian cancer 
Pharoah, Paul D. P. | Tsai, Ya-Yu | Ramus, Susan J. | Phelan, Catherine M. | Goode, Ellen L. | Lawrenson, Kate | Price, Melissa | Fridley, Brooke L. | Tyrer, Jonathan P. | Shen, Howard | Weber, Rachel | Karevan, Rod | Larson, Melissa C. | Song, Honglin | Tessier, Daniel C. | Bacot, François | Vincent, Daniel | Cunningham, Julie M. | Dennis, Joe | Dicks, Ed | Aben, Katja K. | Anton-Culver, Hoda | Antonenkova, Natalia | Armasu, Sebastian M. | Baglietto, Laura | Bandera, Elisa V. | Beckmann, Matthias W. | Birrer, Michael J. | Bloom, Greg | Bogdanova, Natalia | Brenton, James D. | Brinton, Louise A. | Brooks-Wilson, Angela | Brown, Robert | Butzow, Ralf | Campbell, Ian | Carney, Michael E | Carvalho, Renato S. | Chang-Claude, Jenny | Chen, Y. Anne | Chen, Zhihua | Chow, Wong-Ho | Cicek, Mine S. | Coetzee, Gerhard | Cook, Linda S. | Cramer, Daniel W. | Cybulski, Cezary | Dansonka-Mieszkowska, Agnieszka | Despierre, Evelyn | Doherty, Jennifer A | Dörk, Thilo | du Bois, Andreas | Dürst, Matthias | Eccles, Diana | Edwards, Robert | Ekici, Arif B. | Fasching, Peter A. | Fenstermacher, David | Flanagan, James | Gao, Yu-Tang | Garcia-Closas, Montserrat | Gentry-Maharaj, Aleksandra | Giles, Graham | Gjyshi, Anxhela | Gore, Martin | Gronwald, Jacek | Guo, Qi | Halle, Mari K | Harter, Philipp | Hein, Alexander | Heitz, Florian | Hillemanns, Peter | Hoatlin, Maureen | Høgdall, Estrid | Høgdall, Claus K. | Hosono, Satoyo | Jakubowska, Anna | Jensen, Allan | Kalli, Kimberly R. | Karlan, Beth Y. | Kelemen, Linda E. | Kiemeney, Lambertus A. | Kjaer, Susanne Krüger | Konecny, Gottfried E. | Krakstad, Camilla | Kupryjanczyk, Jolanta | Lambrechts, Diether | Lambrechts, Sandrina | Le, Nhu D. | Lee, Nathan | Lee, Janet | Leminen, Arto | Lim, Boon Kiong | Lissowska, Jolanta | Lubiński, Jan | Lundvall, Lene | Lurie, Galina | Massuger, Leon F.A.G. | Matsuo, Keitaro | McGuire, Valerie | McLaughlin, John R | Menon, Usha | Modugno, Francesmary | Moysich, Kirsten B. | Nakanishi, Toru | Narod, Steven A. | Ness, Roberta B. | Nevanlinna, Heli | Nickels, Stefan | Noushmehr, Houtan | Odunsi, Kunle | Olson, Sara | Orlow, Irene | Paul, James | Pejovic, Tanja | Pelttari, Liisa M | Permuth-Wey, Jenny | Pike, Malcolm C | Poole, Elizabeth M | Qu, Xiaotao | Risch, Harvey A. | Rodriguez-Rodriguez, Lorna | Rossing, Mary Anne | Rudolph, Anja | Runnebaum, Ingo | Rzepecka, Iwona K | Salvesen, Helga B. | Schwaab, Ira | Severi, Gianluca | Shen, Hui | Shridhar, Vijayalakshmi | Shu, Xiao-Ou | Sieh, Weiva | Southey, Melissa C. | Spellman, Paul | Tajima, Kazuo | Teo, Soo-Hwang | Terry, Kathryn L. | Thompson, Pamela J | Timorek, Agnieszka | Tworoger, Shelley S. | van Altena, Anne M. | Berg, David Van Den | Vergote, Ignace | Vierkant, Robert A. | Vitonis, Allison F. | Wang-Gohrke, Shan | Wentzensen, Nicolas | Whittemore, Alice S. | Wik, Elisabeth | Winterhoff, Boris | Woo, Yin Ling | Wu, Anna H | Yang, Hannah P. | Zheng, Wei | Ziogas, Argyrios | Zulkifli, Famida | Goodman, Marc T. | Hall, Per | Easton, Douglas F | Pearce, Celeste L | Berchuck, Andrew | Chenevix-Trench, Georgia | Iversen, Edwin | Monteiro, Alvaro N.A. | Gayther, Simon A. | Schildkraut, Joellen M. | Sellers, Thomas A.
Nature genetics  2013;45(4):362-370e2.
Genome wide association studies (GWAS) have identified four susceptibility loci for epithelial ovarian cancer (EOC) with another two loci being close to genome-wide significance. We pooled data from a GWAS conducted in North America with another GWAS from the United Kingdom. We selected the top 24,551 SNPs for inclusion on the iCOGS custom genotyping array. Follow-up genotyping was carried out in 18,174 cases and 26,134 controls from 43 studies from the Ovarian Cancer Association Consortium. We validated the two loci at 3q25 and 17q21 previously near genome-wide significance and identified three novel loci associated with risk; two loci associated with all EOC subtypes, at 8q21 (rs11782652, P=5.5×10-9) and 10p12 (rs1243180; P=1.8×10-8), and another locus specific to the serous subtype at 17q12 (rs757210; P=8.1×10-10). An integrated molecular analysis of genes and regulatory regions at these loci provided evidence for functional mechanisms underlying susceptibility that implicates CHMP4C in the pathogenesis of ovarian cancer.
doi:10.1038/ng.2564
PMCID: PMC3693183  PMID: 23535730
7.  Non-Hodgkin Lymphoma Risk and Variants in Genes Controlling Lymphocyte Development 
PLoS ONE  2013;8(9):e75170.
Non-Hodgkin lymphomas (NHL) are a heterogeneous group of solid tumours of lymphoid cell origin. Three important aspects of lymphocyte development include immunity and inflammation, DNA repair, and programmed cell death. We have used a previously established case-control study of NHL to ask whether genetic variation in genes involved in these three important processes influences risk of this cancer. 118 genes in these three categories were tagged with single nucleotide polymorphisms (SNPs), which were tested for association with NHL and its subtypes. The main analysis used logistic regression (additive model) to estimate odds ratios in European-ancestry cases and controls. 599 SNPs and 1116 samples (569 cases and 547 controls) passed quality control measures and were included in analyses. Following multiple-testing correction, one SNP in MSH3, a mismatch repair gene, showed an association with diffuse large B-cell lymphoma (OR: 1.91; 95% CI: 1.41–2.59; uncorrected p = 0.00003; corrected p = 0.010). This association was not replicated in an independent European-ancestry sample set of 251 diffuse large B-cell lymphoma cases and 737 controls, indicating this result was likely a false positive. It is likely that moderate sample size, inter-subtype and other genetic heterogeneity, and small true effect sizes account for the lack of replicable findings.
doi:10.1371/journal.pone.0075170
PMCID: PMC3787098  PMID: 24098683
8.  Genome-wide Association Study for Ovarian Cancer Susceptibility using Pooled DNA 
Recent genome-wide association studies (GWAS) have identified four low-penetrance ovarian cancer susceptibility loci. We hypothesized that further moderate or low penetrance variants exist among the subset of SNPs not well tagged by the genotyping arrays used in the previous studies which would account for some of the remaining risk. We therefore conducted a time- and cost-effective stage 1 GWAS on 342 invasive serous cases and 643 controls genotyped on pooled DNA using the high density Illumina 1M-Duo array. We followed up 20 of the most significantly associated SNPs, which are not well tagged by the lower density arrays used by the published GWAS, and genotyping them on individual DNA. Most of the top 20 SNPs were clearly validated by individually genotyping the samples used in the pools. However, none of the 20 SNPs replicated when tested for association in a much larger stage 2 set of 4,651 cases and 6,966 controls from the Ovarian Cancer Association Consortium. Given that most of the top 20 SNPs from pooling were validated in the same samples by individual genotyping, the lack of replication is likely to be due to the relatively small sample size in our stage 1 GWAS rather than due to problems with the pooling approach. We conclude that there are unlikely to be any moderate or large effects on ovarian cancer risk untagged by the less dense arrays. However our study lacked power to make clear statements on the existence of hitherto untagged small effect variants.
doi:10.1017/thg.2012.38
PMCID: PMC3785301  PMID: 22794196
9.  Sex- and Subtype-Specific Analysis of H2AFX Polymorphisms in Non-Hodgkin Lymphoma 
PLoS ONE  2013;8(9):e74619.
H2AFX encodes a histone variant involved in signaling sites of DNA damage and recruiting repair factors. Genetic variants in H2AFX may influence risk of non-Hodgkin lymphoma (NHL), a heterogeneous group of lymphoid tumors that are characterized by chromosomal translocations. We previously reported that rs2509049, a common variant in the promoter of H2AFX, was associated with risk for NHL in the British Columbia population. Here we report results for 13 single nucleotide polymorphisms (SNPs) in 100 Kb surrounding H2AFX in an expanded collection of 568 NHL cases and 547 controls. After correction for multiple testing, significant associations were present for mantle cell lymphoma (p=0.007 for rs604714) and all B-cell lymphomas (p=0.046 for rs2509049). Strong linkage disequilibrium in the 5 Kb upstream of H2AFX limited the ability to determine which specific SNP (rs2509049, rs7759, rs8551, rs643788, rs604714, or rs603826), if any, was responsible. There was a significant interaction between sex and rs2509049 in the all B-cell lymphomas group (p=0.002); a sex-stratified analysis revealed that the association was confined to females (p=0.001). Neither the overall nor the female-specific association with rs2509049 was replicated in any of four independent NHL sample sets. Meta-analysis of all five study populations (3,882 B-cell NHL cases and 3,718 controls) supported a weak association with B-cell lymphoma (OR=0.92, 95% CI=0.86-0.99, p=0.034), although this association was not significant after exclusion of the British Columbia data. Further research into the potential sex-specificity of the H2AFX-NHL association may identify a subset of NHL cases that are influenced by genotype at this locus.
doi:10.1371/journal.pone.0074619
PMCID: PMC3775730  PMID: 24069324
10.  Genetics of healthy aging and longevity 
Human Genetics  2013;132(12):1323-1338.
Longevity and healthy aging are among the most complex phenotypes studied to date. The heritability of age at death in adulthood is approximately 25 %. Studies of exceptionally long-lived individuals show that heritability is greatest at the oldest ages. Linkage studies of exceptionally long-lived families now support a longevity locus on chromosome 3; other putative longevity loci differ between studies. Candidate gene studies have identified variants at APOE and FOXO3A associated with longevity; other genes show inconsistent results. Genome-wide association scans (GWAS) of centenarians vs. younger controls reveal only APOE as achieving genome-wide significance (GWS); however, analyses of combinations of SNPs or genes represented among associations that do not reach GWS have identified pathways and signatures that converge upon genes and biological processes related to aging. The impact of these SNPs, which may exert joint effects, may be obscured by gene-environment interactions or inter-ethnic differences. GWAS and whole genome sequencing data both show that the risk alleles defined by GWAS of common complex diseases are, perhaps surprisingly, found in long-lived individuals, who may tolerate them by means of protective genetic factors. Such protective factors may ‘buffer’ the effects of specific risk alleles. Rare alleles are also likely to contribute to healthy aging and longevity. Epigenetics is quickly emerging as a critical aspect of aging and longevity. Centenarians delay age-related methylation changes, and they can pass this methylation preservation ability on to their offspring. Non-genetic factors, particularly lifestyle, clearly affect the development of age-related diseases and affect health and lifespan in the general population. To fully understand the desirable phenotypes of healthy aging and longevity, it will be necessary to examine whole genome data from large numbers of healthy long-lived individuals to look simultaneously at both common and rare alleles, with impeccable control for population stratification and consideration of non-genetic factors such as environment.
doi:10.1007/s00439-013-1342-z
PMCID: PMC3898394  PMID: 23925498
11.  Identification and molecular characterization of a new ovarian cancer susceptibility locus at 17q21.31 
Permuth-Wey, Jennifer | Lawrenson, Kate | Shen, Howard C. | Velkova, Aneliya | Tyrer, Jonathan P. | Chen, Zhihua | Lin, Hui-Yi | Chen, Y. Ann | Tsai, Ya-Yu | Qu, Xiaotao | Ramus, Susan J. | Karevan, Rod | Lee, Janet | Lee, Nathan | Larson, Melissa C. | Aben, Katja K. | Anton-Culver, Hoda | Antonenkova, Natalia | Antoniou, Antonis | Armasu, Sebastian M. | Bacot, François | Baglietto, Laura | Bandera, Elisa V. | Barnholtz-Sloan, Jill | Beckmann, Matthias W. | Birrer, Michael J. | Bloom, Greg | Bogdanova, Natalia | Brinton, Louise A. | Brooks-Wilson, Angela | Brown, Robert | Butzow, Ralf | Cai, Qiuyin | Campbell, Ian | Chang-Claude, Jenny | Chanock, Stephen | Chenevix-Trench, Georgia | Cheng, Jin Q. | Cicek, Mine S. | Coetzee, Gerhard A. | Cook, Linda S. | Couch, Fergus J. | Cramer, Daniel W. | Cunningham, Julie M. | Dansonka-Mieszkowska, Agnieszka | Despierre, Evelyn | Doherty, Jennifer A | Dörk, Thilo | du Bois, Andreas | Dürst, Matthias | Easton, Douglas F | Eccles, Diana | Edwards, Robert | Ekici, Arif B. | Fasching, Peter A. | Fenstermacher, David A. | Flanagan, James M. | Garcia-Closas, Montserrat | Gentry-Maharaj, Aleksandra | Giles, Graham G. | Glasspool, Rosalind M. | Gonzalez-Bosquet, Jesus | Goodman, Marc T. | Gore, Martin | Górski, Bohdan | Gronwald, Jacek | Hall, Per | Halle, Mari K. | Harter, Philipp | Heitz, Florian | Hillemanns, Peter | Hoatlin, Maureen | Høgdall, Claus K. | Høgdall, Estrid | Hosono, Satoyo | Jakubowska, Anna | Jensen, Allan | Jim, Heather | Kalli, Kimberly R. | Karlan, Beth Y. | Kaye, Stanley B. | Kelemen, Linda E. | Kiemeney, Lambertus A. | Kikkawa, Fumitaka | Konecny, Gottfried E. | Krakstad, Camilla | Kjaer, Susanne Krüger | Kupryjanczyk, Jolanta | Lambrechts, Diether | Lambrechts, Sandrina | Lancaster, Johnathan M. | Le, Nhu D. | Leminen, Arto | Levine, Douglas A. | Liang, Dong | Lim, Boon Kiong | Lin, Jie | Lissowska, Jolanta | Lu, Karen H. | Lubiński, Jan | Lurie, Galina | Massuger, Leon F.A.G. | Matsuo, Keitaro | McGuire, Valerie | McLaughlin, John R | Menon, Usha | Modugno, Francesmary | Moysich, Kirsten B. | Nakanishi, Toru | Narod, Steven A. | Nedergaard, Lotte | Ness, Roberta B. | Nevanlinna, Heli | Nickels, Stefan | Noushmehr, Houtan | Odunsi, Kunle | Olson, Sara H. | Orlow, Irene | Paul, James | Pearce, Celeste L | Pejovic, Tanja | Pelttari, Liisa M. | Pike, Malcolm C. | Poole, Elizabeth M. | Raska, Paola | Renner, Stefan P. | Risch, Harvey A. | Rodriguez-Rodriguez, Lorna | Rossing, Mary Anne | Rudolph, Anja | Runnebaum, Ingo B. | Rzepecka, Iwona K. | Salvesen, Helga B. | Schwaab, Ira | Severi, Gianluca | Shridhar, Vijayalakshmi | Shu, Xiao-Ou | Shvetsov, Yurii B. | Sieh, Weiva | Song, Honglin | Southey, Melissa C. | Spiewankiewicz, Beata | Stram, Daniel | Sutphen, Rebecca | Teo, Soo-Hwang | Terry, Kathryn L. | Tessier, Daniel C. | Thompson, Pamela J. | Tworoger, Shelley S. | van Altena, Anne M. | Vergote, Ignace | Vierkant, Robert A. | Vincent, Daniel | Vitonis, Allison F. | Wang-Gohrke, Shan | Weber, Rachel Palmieri | Wentzensen, Nicolas | Whittemore, Alice S. | Wik, Elisabeth | Wilkens, Lynne R. | Winterhoff, Boris | Woo, Yin Ling | Wu, Anna H. | Xiang, Yong-Bing | Yang, Hannah P. | Zheng, Wei | Ziogas, Argyrios | Zulkifli, Famida | Phelan, Catherine M. | Iversen, Edwin | Schildkraut, Joellen M. | Berchuck, Andrew | Fridley, Brooke L. | Goode, Ellen L. | Pharoah, Paul D. P. | Monteiro, Alvaro N.A. | Sellers, Thomas A. | Gayther, Simon A.
Nature communications  2013;4:1627.
Epithelial ovarian cancer (EOC) has a heritable component that remains to be fully characterized. Most identified common susceptibility variants lie in non-protein-coding sequences. We hypothesized that variants in the 3′ untranslated region at putative microRNA (miRNA) binding sites represent functional targets that influence EOC susceptibility. Here, we evaluate the association between 767 miRNA binding site single nucleotide polymorphisms (miRSNPs) and EOC risk in 18,174 EOC cases and 26,134 controls from 43 studies genotyped through the Collaborative Oncological Gene-environment Study. We identify several miRSNPs associated with invasive serous EOC risk (OR=1.12, P=10−8) mapping to an inversion polymorphism at 17q21.31. Additional genotyping of non-miRSNPs at 17q21.31 reveals stronger signals outside the inversion (P=10−10). Variation at 17q21.31 associates with neurological diseases, and our collaboration is the first to report an association with EOC susceptibility. An integrated molecular analysis in this region provides evidence for ARHGAP27 and PLEKHM1 as candidate EOC susceptibility genes.
doi:10.1038/ncomms2613
PMCID: PMC3709460  PMID: 23535648
12.  Genetic Polymorphisms at TIMP3 Are Associated with Survival of Adenocarcinoma of the Gastroesophageal Junction 
PLoS ONE  2013;8(3):e59157.
The poor survival of adenocarcinomas of the gastroesophageal junction (GEJ) makes them clinically important. Discovery of host genetic factors that affect outcome may guide more individualized treatment. This study tests whether constitutional genetic variants in matrix metalloproteinases (MMP) and tissue inhibitors of metalloproteinases (TIMP) genes are associated with outcome of GEJ adenocarcinoma. Single nucleotide polymorphisms (SNPs) at four TIMP (TIMP1-4) and three MMP genes (MMP2, MMP7 and MMP9) were genotyped in DNA samples from a prospective cohort of patients with primary adenocarcinoma of the GEJ admitted to the British Columbia Cancer Agency. Cox proportional hazards regression, with adjustment for patient, disease and treatment variables, was used to estimate the association of SNPs with survival. Genotypes for 85 samples and 48 SNPs were analyzed. Four SNPs across TIMP3, (rs130274, rs715572, rs1962223 and rs5754312) were associated with survival. Interaction analyses revealed that the survival associations with rs715572 and rs5754312 are specific and significant for 5FU+cisplatin treated patients. Sanger sequencing of the TIMP3 coding and promoter regions revealed an additional SNP, rs9862, also associated with survival. TIMP3 genetic variants are associated with survival and may be potentially useful in optimizing treatment strategies for individual patients.
doi:10.1371/journal.pone.0059157
PMCID: PMC3602604  PMID: 23527119
13.  The Relationship between Telomere Length and Mortality in Chronic Obstructive Pulmonary Disease (COPD) 
PLoS ONE  2012;7(4):e35567.
Some have suggested that chronic obstructive pulmonary disease (COPD) is a disease of accelerated aging. Aging is characterized by shortening of telomeres. The relationship of telomere length to important clinical outcomes such as mortality, disease progression and cancer in COPD is unknown. Using quantitative polymerase chain reaction (qPCR), we measured telomere length of peripheral leukocytes in 4,271 subjects with mild to moderate COPD who participated in the Lung Health Study (LHS). The subjects were followed for approximately 7.5 years during which time their vital status, FEV1 and smoking status were ascertained. Using multiple regression methods, we determined the relationship of telomere length to cancer and total mortality in these subjects. We also measured telomere length in healthy “mid-life” volunteers and patients with more severe COPD. The LHS subjects had significantly shorter telomeres than those of healthy “mid-life” volunteers (p<.001). Compared to individuals in the 4th quartile of relative telomere length (i.e. longest telomere group), the remaining participants had significantly higher risk of cancer mortality (Hazard ratio, HR, 1.48; p = 0.0324) and total mortality (HR, 1.29; p = 0.0425). Smoking status did not make a significant difference in peripheral blood cells telomere length. In conclusion, COPD patients have short leukocyte telomeres, which are in turn associated increased risk of total and cancer mortality. Accelerated aging is of particular relevance to cancer mortality in COPD.
doi:10.1371/journal.pone.0035567
PMCID: PMC3338848  PMID: 22558169
14.  Frequent mutation of histone modifying genes in non-Hodgkin lymphoma 
Nature  2011;476(7360):298-303.
Follicular lymphoma (FL) and diffuse large B-cell lymphoma (DLBCL) are the two most common non-Hodgkin lymphomas (NHLs). To identify genes with mutations in B-cell NHL we sequenced tumour and matched normal DNA from 13 DLBCL cases and one FL case. We analysed RNA-seq data from these and another 113 NHLs to identify genes with candidate mutations, and then re-sequenced tumour and matched normal DNA from these cases to confirm 109 genes with multiple somatic mutations. Genes with roles in histone modification were frequent targets of somatic mutation. For example, 32% of DLBCL and 89% of FL cases had somatic mutations in MLL2, which encodes a histone methyltransferase. 11.4% of DLBCL and 13.4% of FL cases had somatic mutations in MEF2B, a calcium-regulated gene that cooperates with CREBBP and EP300 in acetylating histones. Our analysis thus suggests a previously unappreciated disruption of chromatin biology in lymphomagenesis.
doi:10.1038/nature10351
PMCID: PMC3210554  PMID: 21796119
H3K27; H3K4; HDAC; HAT; cancer genomics; methylation; acetylation; EZH2; driver; cancer sequencing
15.  Genetic Variation in Cell Death Genes and Risk of Non-Hodgkin Lymphoma 
PLoS ONE  2012;7(2):e31560.
Background
Non-Hodgkin lymphomas are a heterogeneous group of solid tumours that constitute the 5th highest cause of cancer mortality in the United States and Canada. Poor control of cell death in lymphocytes can lead to autoimmune disease or cancer, making genes involved in programmed cell death of lymphocytes logical candidate genes for lymphoma susceptibility.
Materials and Methods
We tested for genetic association with NHL and NHL subtypes, of SNPs in lymphocyte cell death genes using an established population-based study. 17 candidate genes were chosen based on biological function, with 123 SNPs tested. These included tagSNPs from HapMap and novel SNPs discovered by re-sequencing 47 cases in genes for which SNP representation was judged to be low. The main analysis, which estimated odds ratios by fitting data to an additive logistic regression model, used European ancestry samples that passed quality control measures (569 cases and 547 controls). A two-tiered approach for multiple testing correction was used: correction for number of tests within each gene by permutation-based methodology, followed by correction for the number of genes tested using the false discovery rate.
Results
Variant rs928883, near miR-155, showed an association (OR per A-allele: 2.80 [95% CI: 1.63–4.82]; pF = 0.027) with marginal zone lymphoma that is significant after correction for multiple testing.
Conclusions
This is the first reported association between a germline polymorphism at a miRNA locus and lymphoma.
doi:10.1371/journal.pone.0031560
PMCID: PMC3274532  PMID: 22347493
16.  The role of KRAS rs61764370 in invasive epithelial ovarian cancer: implications for clinical testing 
Pharoah, Paul D. P. | Palmieri, Rachel T. | Ramus, Susan J. | Gayther, Simon A. | Andrulis, Irene L. | Anton-Culver, Hoda | Antonenkova, Natalia | Antoniou, Antonis C. | Beattie, Mary S. | Beckmann, Matthias W. | Birrer, Michael J. | Bogdanova, Natalia | Bolton, Kelly L. | Brewster, Wendy | Brooks-Wilson, Angela | Brown, Robert | Butzow, Ralf | Caldes, Trinidad | Caligo, Maria Adelaide | Campbell, Ian | Chang-Claude, Jenny | Chen, Y. Ann | Chenevix-Trench, Georgia | Cook, Linda S. | Couch, Fergus J. | Cramer, Daniel W. | Cunningham, Julie M. | Despierre, Evelyn | Doherty, Jennifer A. | Dörk, Thilo | Dürst, Matthias | Eccles, Diana M. | Ekici, Arif B. | Fasching, Peter A. | de Fazio, Anna | Fenstermacher, David A. | Flanagan, James M. | Fridley, Brooke L. | Friedman, Eitan | Gao, Bo | Gentry-Maharaj, Aleksandra | Godwin, Andrew K. | Goode, Ellen L. | Goodman, Marc T. | Gross, Jenny | Hansen, Thomas V. O. | Harnett, Paul | Heikkinen, Tuomas | Hein, Rebecca | Høgdall, Claus | Høgdall, Estrid | Iversen, Edwin S. | Jakubowska, Anna | Johnatty, Sharon E. | Karlan, Beth Y. | Kauff, Noah D. | Kaye, Stanley B. | Kelemen, Linda E. | Kiemeney, Lambertus A. | Kjaer, Susanne Krüger | Lambrechts, Diether | LaPolla, James P. | Lázaro, Conxi | Le, Nhu D. | Leminen, Arto | Leunen, Karin | Levine, Douglas A. | Lu, Yi | Lundvall, Lene | Macgregor, Stuart | Marees, Tamara | Massuger, Leon F. | McLaughlin, John R. | Menon, Usha | Montagna, Marco | Moysich, Kirsten B. | Narod, Steven A. | Nathanson, Katherine L. | Nedergaard, Lotte | Ness, Roberta B. | Nevanlinna, Heli | Nickels, Stefan | Osorio, Ana | Paul, Jim | Pearce, Celeste Leigh | Phelan, Catherine M. | Pike, Malcolm C. | Radice, Paolo | Rossing, Mary Anne | Schildkraut, Joellen M. | Sellers, Thomas A. | Singer, Christian F. | Song, Honglin | Stram, Daniel O. | Sutphen, Rebecca | Terry, Kathryn L. | Tsai, Ya-Yu | van Altena, Anne M. | Vergote, Ignace | Vierkant, Robert A. | Vitonis, Allison F. | Walsh, Christine | Wang-Gohrke, Shan | Wappenschmidt, Barbara | Wu, Anna H. | Ziogas, Argyrios | Berchuck, Andrew | Risch, Harvey A.
Purpose
An assay for the single nucleotide polymorphism (SNP) rs61764370 has recently been commercially marketed as a clinical test to aid ovarian cancer risk evaluation in women with family histories of the disease. rs67164370 is in a 3′UTR miRNA binding site of the KRAS oncogene, and is a candidate for epithelial ovarian cancer (EOC) susceptibility. However, only one published paper, analyzing fewer than 1,000 subjects in total, has examined this association.
Experimental Design
Risk association was evaluated in 8,669 cases of invasive EOC and 10,012 controls from nineteen studies participating in the Ovarian Cancer Association Consortium, and in 683 cases and 2,044 controls carrying BRCA1 mutations from studies in the Consortium of Investigators of Modifiers of BRCA1/2. Prognosis association was also examined in a subset of five studies with progression-free survival data and eighteen studies with all-cause mortality data.
Results
No evidence of association was observed between genotype and risk of unselected EOC (odds ratio (OR)=1.02, 95% confidence interval (CI)=0.95–1.10), serous EOC (OR=1.08, 95%CI=0.98–1.18), familial EOC (OR=1.09, 95%CI=0.78–1.54), or among women carrying deleterious mutations in BRCA1 (OR=1.09, 95%CI=0.88–1.36). There was little evidence for association with survival time among unselected cases (hazard ratio (HR)=1.10, 95%CI=0.99–1.22), among serous cases (HR=1.12, 95%CI=0.99–1.28), or with progression-free survival in 540 cases treated with carboplatin and paclitaxel (HR=1.18, 95%CI=0.93–1.52).
Conclusions
These data exclude the possibility of an association between rs61764370 and a clinically significant risk of ovarian cancer or of familial ovarian cancer. Use of this SNP for ovarian cancer clinical risk prediction therefore appears unwarranted.
doi:10.1158/1078-0432.CCR-10-3405
PMCID: PMC3107901  PMID: 21385923
17.  The role of KRAS rs61764370 in invasive epithelial ovarian cancer: implications for clinical testing 
Pharoah, Paul D. P. | Palmieri, Rachel T. | Ramus, Susan J. | Gayther, Simon A. | Andrulis, Irene L. | Anton-Culver, Hoda | Antonenkova, Natalia | Antoniou, Antonis C. | Beattie, Mary S. | Beckmann, Matthias W. | Birrer, Michael J. | Bogdanova, Natalia | Bolton, Kelly L. | Brewster, Wendy | Brooks-Wilson, Angela | Brown, Robert | Butzow, Ralf | Caldes, Trinidad | Caligo, Maria Adelaide | Campbell, Ian | Chang-Claude, Jenny | Chen, Y. Ann | Chenevix-Trench, Georgia | Cook, Linda S. | Couch, Fergus J. | Cramer, Daniel W. | Cunningham, Julie M. | Despierre, Evelyn | Doherty, Jennifer A. | Dörk, Thilo | Dürst, Matthias | Eccles, Diana M. | Ekici, Arif B. | Fasching, Peter A. | de Fazio, Anna | Fenstermacher, David A. | Flanagan, James M. | Fridley, Brooke L. | Friedman, Eitan | Gao, Bo | Gentry-Maharaj, Aleksandra | Godwin, Andrew K. | Goode, Ellen L. | Goodman, Marc T. | Gross, Jenny | Hansen, Thomas V. O. | Harnett, Paul | Heikkinen, Tuomas | Hein, Rebecca | Høgdall, Claus | Høgdall, Estrid | Iversen, Edwin S. | Jakubowska, Anna | Johnatty, Sharon E. | Karlan, Beth Y. | Kauff, Noah D. | Kaye, Stanley B. | Kelemen, Linda E. | Kiemeney, Lambertus A. | Kjaer, Susanne Krüger | Lambrechts, Diether | LaPolla, James P. | Lázaro, Conxi | Le, Nhu D. | Leminen, Arto | Leunen, Karin | Levine, Douglas A. | Lu, Yi | Lundvall, Lene | Macgregor, Stuart | Marees, Tamara | Massuger, Leon F. | McLaughlin, John R. | Menon, Usha | Montagna, Marco | Moysich, Kirsten B. | Narod, Steven A. | Nathanson, Katherine L. | Nedergaard, Lotte | Ness, Roberta B. | Nevanlinna, Heli | Nickels, Stefan | Osorio, Ana | Paul, Jim | Pearce, Celeste Leigh | Phelan, Catherine M. | Pike, Malcolm C. | Radice, Paolo | Rossing, Mary Anne | Schildkraut, Joellen M. | Sellers, Thomas A. | Singer, Christian F. | Song, Honglin | Stram, Daniel O. | Sutphen, Rebecca | Terry, Kathryn L. | Tsai, Ya-Yu | van Altena, Anne M. | Vergote, Ignace | Vierkant, Robert A. | Vitonis, Allison F. | Walsh, Christine | Wang-Gohrke, Shan | Wappenschmidt, Barbara | Wu, Anna H. | Ziogas, Argyrios | Berchuck, Andrew | Risch, Harvey A.
Purpose
An assay for the single nucleotide polymorphism (SNP) rs61764370 has recently been commercially marketed as a clinical test to aid ovarian cancer risk evaluation in women with family histories of the disease. rs67164370 is in a 3′UTR miRNA binding site of the KRAS oncogene, and is a candidate for epithelial ovarian cancer (EOC) susceptibility. However, only one published paper, analyzing fewer than 1,000 subjects in total, has examined this association.
Experimental Design
Risk association was evaluated in 8,669 cases of invasive EOC and 10,012 controls from nineteen studies participating in the Ovarian Cancer Association Consortium, and in 683 cases and 2,044 controls carrying BRCA1 mutations from studies in the Consortium of Investigators of Modifiers of BRCA1/2. Prognosis association was also examined in a subset of five studies with progression-free survival data and eighteen studies with all-cause mortality data.
Results
No evidence of association was observed between genotype and risk of unselected EOC (odds ratio (OR)=1.02, 95% confidence interval (CI)=0.95-1.10), serous EOC (OR=1.08, 95%CI=0.98-1.18), familial EOC (OR=1.09, 95%CI=0.78-1.54), or among women carrying deleterious mutations in BRCA1 (OR=1.09, 95%CI=0.88-1.36). There was little evidence for association with survival time among unselected cases (hazard ratio (HR)=1.10, 95%CI=0.99-1.22), among serous cases (HR=1.12, 95%CI=0.99-1.28), or with progression-free survival in 540 cases treated with carboplatin and paclitaxel (HR=1.18, 95%CI=0.93-1.52).
Conclusions
These data exclude the possibility of an association between rs61764370 and a clinically significant risk of ovarian cancer or of familial ovarian cancer. Use of this SNP for ovarian cancer clinical risk prediction therefore appears unwarranted.
doi:10.1158/1078-0432.CCR-10-3405
PMCID: PMC3107901  PMID: 21385923
18.  Estimates of array and pool-construction variance for planning efficient DNA-pooling genome wide association studies 
BMC Medical Genomics  2011;4:81.
Background
Until recently, genome-wide association studies (GWAS) have been restricted to research groups with the budget necessary to genotype hundreds, if not thousands, of samples. Replacing individual genotyping with genotyping of DNA pools in Phase I of a GWAS has proven successful, and dramatically altered the financial feasibility of this approach. When conducting a pool-based GWAS, how well SNP allele frequency is estimated from a DNA pool will influence a study's power to detect associations. Here we address how to control the variance in allele frequency estimation when DNAs are pooled, and how to plan and conduct the most efficient well-powered pool-based GWAS.
Methods
By examining the variation in allele frequency estimation on SNP arrays between and within DNA pools we determine how array variance [var(earray)] and pool-construction variance [var(econstruction)] contribute to the total variance of allele frequency estimation. This information is useful in deciding whether replicate arrays or replicate pools are most useful in reducing variance. Our analysis is based on 27 DNA pools ranging in size from 74 to 446 individual samples, genotyped on a collective total of 128 Illumina beadarrays: 24 1M-Single, 32 1M-Duo, and 72 660-Quad.
Results
For all three Illumina SNP array types our estimates of var(earray) were similar, between 3-4 × 10-4 for normalized data. Var(econstruction) accounted for between 20-40% of pooling variance across 27 pools in normalized data.
Conclusions
We conclude that relative to var(earray), var(econstruction) is of less importance in reducing the variance in allele frequency estimation from DNA pools; however, our data suggests that on average it may be more important than previously thought. We have prepared a simple online tool, PoolingPlanner (available at http://www.kchew.ca/PoolingPlanner/), which calculates the effective sample size (ESS) of a DNA pool given a range of replicate array values. ESS can be used in a power calculator to perform pool-adjusted calculations. This allows one to quickly calculate the loss of power associated with a pooling experiment to make an informed decision on whether a pool-based GWAS is worth pursuing.
doi:10.1186/1755-8794-4-81
PMCID: PMC3247851  PMID: 22122996
19.  A Genome-Wide Association Study Identifies Susceptibility Loci for Ovarian Cancer at 2q31 and 8q24 
Goode, Ellen L. | Chenevix-Trench, Georgia | Song, Honglin | Ramus, Susan J. | Notaridou, Maria | Lawrenson, Kate | Widschwendter, Martin | Vierkant, Robert A. | Larson, Melissa C. | Kjaer, Susanne K. | Birrer, Michael J. | Berchuck, Andrew | Schildkraut, Joellen | Tomlinson, Ian | Kiemeney, Lambertus A. | Cook, Linda S. | Gronwald, Jacek | Garcia-Closas, Montserrat | Gore, Martin E. | Campbell, Ian | Whittemore, Alice S. | Sutphen, Rebecca | Phelan, Catherine | Anton-Culver, Hoda | Pearce, Celeste Leigh | Lambrechts, Diether | Rossing, Mary Anne | Chang-Claude, Jenny | Moysich, Kirsten B. | Goodman, Marc T. | Dörk, Thilo | Nevanlinna, Heli | Ness, Roberta B. | Rafnar, Thorunn | Hogdall, Claus | Hogdall, Estrid | Fridley, Brooke L. | Cunningham, Julie M. | Sieh, Weiva | McGuire, Valerie | Godwin, Andrew K. | Cramer, Daniel W. | Hernandez, Dena | Levine, Douglas | Lu, Karen | Iversen, Edwin S. | Palmieri, Rachel T. | Houlston, Richard | van Altena, Anne M. | Aben, Katja K.H. | Massuger, Leon F.A.G. | Brooks-Wilson, Angela | Kelemen, Linda E. | Le, Nhu D. | Jakubowska, Anna | Lubinski, Jan | Medrek, Krzysztof | Stafford, Anne | Easton, Douglas F. | Tyrer, Jonathan | Bolton, Kelly L. | Harrington, Patricia | Eccles, Diana | Chen, Ann | Molina, Ashley N. | Davila, Barbara N. | Arango, Hector | Tsai, Ya-Yu | Chen, Zhihua | Risch, Harvey A. | McLaughlin, John | Narod, Steven A. | Ziogas, Argyrios | Brewster, Wendy | Gentry-Maharaj, Aleksandra | Menon, Usha | Wu, Anna H. | Stram, Daniel O. | Pike, Malcolm C. | Beesley, Jonathan | Webb, Penelope M. | Chen, Xiaoqing | Ekici, Arif B. | Thiel, Falk C. | Beckmann, Matthias W. | Yang, Hannah | Wentzensen, Nicolas | Lissowska, Jolanta | Fasching, Peter A. | Despierre, Evelyn | Amant, Frederic | Vergote, Ignace | Doherty, Jennifer | Hein, Rebecca | Wang-Gohrke, Shan | Lurie, Galina | Carney, Michael E. | Thompson, Pamela J. | Runnebaum, Ingo | Hillemanns, Peter | Dürst, Matthias | Antonenkova, Natalia | Bogdanova, Natalia | Leminen, Arto | Butzow, Ralf | Heikkinen, Tuomas | Stefansson, Kari | Sulem, Patrick | Besenbacher, Sören | Sellers, Thomas A. | Gayther, Simon A. | Pharoah, Paul D.P.
Nature genetics  2010;42(10):874-879.
Ovarian cancer (OC) accounts for more deaths than all other gynecological cancers combined. To identify common low-penetrance OC susceptibility genes, we conducted a genome-wide association study (GWAS) of 507,094 SNPs in 1,768 cases and 2,354 controls, with follow-up of 21,955 SNPs in 4,162 cases and 4,810 controls, leading to the identification of a confirmed susceptibility locus at 9p22 (BNC2)1. Here, we report on nine additional candidate loci (p≤10-4), identified after stratifying cases by histology, genotyped in an additional 4,353 cases and 6,021 controls. Two novel susceptibility loci with p≤5×10-8 were confirmed (8q24, p=8.0×10-15 and 2q31, p=3.8×10-14); two additional loci were also identified that approached genome-wide significance (3q25, p=7.1×10-8 and 17q21, p=1.4×10-7). The associations with serous OC were generally stronger than other subtypes. Analysis of HOXD1, MYC, TiPARP, and SKAP1 at these loci, and BNC2 at 9p22, supports a functional role for these genes in OC development.
doi:10.1038/ng.668
PMCID: PMC3020231  PMID: 20852632
20.  Functional Polymorphisms in the TERT Promoter Are Associated with Risk of Serous Epithelial Ovarian and Breast Cancers 
PLoS ONE  2011;6(9):e24987.
Genetic variation at the TERT-CLPTM1L locus at 5p15.33 is associated with susceptibility to several cancers, including epithelial ovarian cancer (EOC). We have carried out fine-mapping of this region in EOC which implicates an association with a single nucleotide polymorphism (SNP) within the TERT promoter. We demonstrate that the minor alleles at rs2736109, and at an additional TERT promoter SNP, rs2736108, are associated with decreased breast cancer risk, and that the combination of both SNPs substantially reduces TERT promoter activity.
doi:10.1371/journal.pone.0024987
PMCID: PMC3174246  PMID: 21949822
21.  Cost–Effective Prediction of Gender-Labeling Errors and Estimation of Gender-Labeling Error Rates in Candidate-Gene Association Studies 
We describe a statistical approach to predict gender-labeling errors in candidate-gene association studies, when Y-chromosome markers have not been included in the genotyping set. The approach adds value to methods that consider only the heterozygosity of X-chromosome SNPs, by incorporating available information about the intensity of X-chromosome SNPs in candidate genes relative to autosomal SNPs from the same individual. To our knowledge, no published methods formalize a framework in which heterozygosity and relative intensity are simultaneously taken into account. Our method offers the advantage that, in the genotyping set, no additional space is required beyond that already assigned to X-chromosome SNPs in the candidate genes. We also show how the predictions can be used in a two-phase sampling design to estimate the gender-labeling error rates for an entire study, at a fraction of the cost of a conventional design.
doi:10.3389/fgene.2011.00031
PMCID: PMC3270323  PMID: 22303327
candidate-gene association study; gender-labeling errors; X-chromosome SNPs; genotype intensities; heterozygosity; two-phase sampling design; error rates; quality control
22.  Polymorphisms in Stromal Genes and Susceptibility to Serous Epithelial Ovarian Cancer: A Report from the Ovarian Cancer Association Consortium 
PLoS ONE  2011;6(5):e19642.
Alterations in stromal tissue components can inhibit or promote epithelial tumorigenesis. Decorin (DCN) and lumican (LUM) show reduced stromal expression in serous epithelial ovarian cancer (sEOC). We hypothesized that common variants in these genes associate with risk. Associations with sEOC among Caucasians were estimated with odds ratios (OR) among 397 cases and 920 controls in two U.S.-based studies (discovery set), 436 cases and 1,098 controls in Australia (replication set 1) and a consortium of 15 studies comprising 1,668 cases and 4,249 controls (replication set 2). The discovery set and replication set 1 (833 cases and 2,013 controls) showed statistically homogeneous (Pheterogeneity≥0.48) decreased risks of sEOC at four variants: DCN rs3138165, rs13312816 and rs516115, and LUM rs17018765 (OR = 0.6 to 0.9; Ptrend = 0.001 to 0.03). Results from replication set 2 were statistically homogeneous (Pheterogeneity≥0.13) and associated with increased risks at DCN rs3138165 and rs13312816, and LUM rs17018765: all ORs = 1.2; Ptrend≤0.02. The ORs at the four variants were statistically heterogeneous across all 18 studies (Pheterogeneity≤0.03), which precluded combining. In post-hoc analyses, interactions were observed between each variant and recruitment period (Pinteraction≤0.003), age at diagnosis (Pinteraction = 0.04), and year of diagnosis (Pinteraction = 0.05) in the five studies with available information (1,044 cases, 2,469 controls). We conclude that variants in DCN and LUM are not directly associated with sEOC, and that confirmation of possible effect modification of the variants by non-genetic factors is required.
doi:10.1371/journal.pone.0019642
PMCID: PMC3103497  PMID: 21637745
23.  The prognostic effect of ethnicity for gastric and esophageal cancer: the population-based experience in British Columbia, Canada 
BMC Cancer  2011;11:164.
Background
Gastric and esophageal cancers are among the most lethal human malignancies. Their epidemiology is geographically diverse. This study compares the survival of gastric and esophageal cancer patients among several ethnic groups including Chinese, South Asians, Iranians and Others in British Columbia (BC), Canada.
Methods
Data were obtained from the population-based BC Cancer Registry for patients diagnosed with invasive esophageal and gastric cancer between 1984 and 2006. The ethnicity of patients was estimated according to their names and categorized as Chinese, South Asian, Iranian or Other. Cox proportional hazards regression analysis was used to estimate the effect of ethnicity adjusted for patient sex and age, disease histology, tumor location, disease stage and treatment.
Results
The survival of gastric cancer patients was significantly different among ethnic groups. Chinese patients showed better survival compared to others in univariate and multivariate analysis. The survival of esophageal cancer patients was significantly different among ethnic groups when the data was analyzed by a univariate test (p = 0.029), but not in the Cox multivariate model adjusted for other patient and prognostic factors.
Conclusions
Ethnicity may represent underlying genetic factors. Such factors could influence host-tumor interactions by altering the tumor's etiology and therefore its chance of spreading. Alternatively, genetic factors may determine response to treatments. Finally, ethnicity may represent non-genetic factors that affect survival. Differences in survival by ethnicity support the importance of ethnicity as a prognostic factor, and may provide clues for the future identification of genetic or lifestyle factors that underlie these observations.
doi:10.1186/1471-2407-11-164
PMCID: PMC3112158  PMID: 21554722
24.  GWAS of Follicular Lymphoma Reveals Allelic Heterogeneity at 6p21.32 and Suggests Shared Genetic Susceptibility with Diffuse Large B-cell Lymphoma 
PLoS Genetics  2011;7(4):e1001378.
Non-Hodgkin lymphoma (NHL) represents a diverse group of hematological malignancies, of which follicular lymphoma (FL) is a prevalent subtype. A previous genome-wide association study has established a marker, rs10484561 in the human leukocyte antigen (HLA) class II region on 6p21.32 associated with increased FL risk. Here, in a three-stage genome-wide association study, starting with a genome-wide scan of 379 FL cases and 791 controls followed by validation in 1,049 cases and 5,790 controls, we identified a second independent FL–associated locus on 6p21.32, rs2647012 (ORcombined = 0.64, Pcombined = 2×10−21) located 962 bp away from rs10484561 (r2<0.1 in controls). After mutual adjustment, the associations at the two SNPs remained genome-wide significant (rs2647012:ORadjusted = 0.70, Padjusted = 4×10−12; rs10484561:ORadjusted = 1.64, Padjusted = 5×10−15). Haplotype and coalescence analyses indicated that rs2647012 arose on an evolutionarily distinct haplotype from that of rs10484561 and tags a novel allele with an opposite (protective) effect on FL risk. Moreover, in a follow-up analysis of the top 6 FL–associated SNPs in 4,449 cases of other NHL subtypes, rs10484561 was associated with risk of diffuse large B-cell lymphoma (ORcombined = 1.36, Pcombined = 1.4×10−7). Our results reveal the presence of allelic heterogeneity within the HLA class II region influencing FL susceptibility and indicate a possible shared genetic etiology with diffuse large B-cell lymphoma. These findings suggest that the HLA class II region plays a complex yet important role in NHL.
Author Summary
Earlier studies have established a marker rs10484561, in the HLA class II region on 6p21.32, associated with increased follicular lymphoma (FL) risk. Here, in a three-stage genome-wide association study of 1,428 FL cases and 6,581 controls, we identified a second independent FL–associated marker on 6p21.32, rs2647012, located 962 bp away from rs10484561. The associations at two SNPs remained genome-wide significant after mutual adjustment. Haplotype and coalescence analyses indicated that rs2647012 arose on an evolutionarily distinct lineage from that of rs10484561 and tags a novel allele with an opposite, protective effect on FL risk. Moreover, in an analysis of the top 6 FL–associated SNPs in 4,449 cases of other NHL subtypes, rs10484561 was associated with risk of diffuse large B-cell lymphoma. Our results reveal the presence of allelic heterogeneity at 6p21.32 in FL risk and suggest a shared genetic etiology with the common diffuse large B-cell lymphoma subtype.
doi:10.1371/journal.pgen.1001378
PMCID: PMC3080853  PMID: 21533074
25.  Genome-wide association study of follicular lymphoma identifies a risk locus at 6p21.32 
Nature genetics  2010;42(8):661-664.
To identify susceptibility loci for non-Hodgkin lymphoma (NHL) subtypes, we conducted a three-stage genome-wide association study. We identified two variants associated with follicular lymphoma (FL) in 1,465 FL cases/6,958 controls at 6p21.32 (rs10484561, rs7755224, r2=1.0; combined p-values=1.12×10-29, 2.00×10-19), providing further support that MHC genetic variation influences FL susceptibility. Confirmatory evidence of a previously reported association was also found between chronic lymphocytic leukemia/small lymphocytic lymphoma and rs735665 (combined p-value=4.24×10-9).
doi:10.1038/ng.626
PMCID: PMC2913472  PMID: 20639881

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