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1.  Breast cancer risk variants at 6q25 display different phenotype associations and regulate ESR1, RMND1 and CCDC170 
Dunning, Alison M | Michailidou, Kyriaki | Kuchenbaecker, Karoline B | Thompson, Deborah | French, Juliet D | Beesley, Jonathan | Healey, Catherine S | Kar, Siddhartha | Pooley, Karen A | Lopez-Knowles, Elena | Dicks, Ed | Barrowdale, Daniel | Sinnott-Armstrong, Nicholas A | Sallari, Richard C | Hillman, Kristine M | Kaufmann, Susanne | Sivakumaran, Haran | Marjaneh, Mahdi Moradi | Lee, Jason S | Hills, Margaret | Jarosz, Monika | Drury, Suzie | Canisius, Sander | Bolla, Manjeet K | Dennis, Joe | Wang, Qin | Hopper, John L | Southey, Melissa C | Broeks, Annegien | Schmidt, Marjanka K | Lophatananon, Artitaya | Muir, Kenneth | Beckmann, Matthias W | Fasching, Peter A | dos-Santos-Silva, Isabel | Peto, Julian | Sawyer, Elinor J | Tomlinson, Ian | Burwinkel, Barbara | Marme, Frederik | Guénel, Pascal | Truong, Thérèse | Bojesen, Stig E | Flyger, Henrik | González-Neira, Anna | Perez, Jose I A | Anton-Culver, Hoda | Eunjung, Lee | Arndt, Volker | Brenner, Hermann | Meindl, Alfons | Schmutzler, Rita K | Brauch, Hiltrud | Hamann, Ute | Aittomäki, Kristiina | Blomqvist, Carl | Ito, Hidemi | Matsuo, Keitaro | Bogdanova, Natasha | Dörk, Thilo | Lindblom, Annika | Margolin, Sara | Kosma, Veli-Matti | Mannermaa, Arto | Tseng, Chiu-chen | Wu, Anna H | Lambrechts, Diether | Wildiers, Hans | Chang-Claude, Jenny | Rudolph, Anja | Peterlongo, Paolo | Radice, Paolo | Olson, Janet E | Giles, Graham G | Milne, Roger L | Haiman, Christopher A | Henderson, Brian E | Goldberg, Mark S | Teo, Soo H | Yip, Cheng Har | Nord, Silje | Borresen-Dale, Anne-Lise | Kristensen, Vessela | Long, Jirong | Zheng, Wei | Pylkäs, Katri | Winqvist, Robert | Andrulis, Irene L | Knight, Julia A | Devilee, Peter | Seynaeve, Caroline | Figueroa, Jonine | Sherman, Mark E | Czene, Kamila | Darabi, Hatef | Hollestelle, Antoinette | van den Ouweland, Ans M W | Humphreys, Keith | Gao, Yu-Tang | Shu, Xiao-Ou | Cox, Angela | Cross, Simon S | Blot, William | Cai, Qiuyin | Ghoussaini, Maya | Perkins, Barbara J | Shah, Mitul | Choi, Ji-Yeob | Kang, Daehee | Lee, Soo Chin | Hartman, Mikael | Kabisch, Maria | Torres, Diana | Jakubowska, Anna | Lubinski, Jan | Brennan, Paul | Sangrajrang, Suleeporn | Ambrosone, Christine B | Toland, Amanda E | Shen, Chen-Yang | Wu, Pei-Ei | Orr, Nick | Swerdlow, Anthony | McGuffog, Lesley | Healey, Sue | Lee, Andrew | Kapuscinski, Miroslav | John, Esther M | Terry, Mary Beth | Daly, Mary B | Goldgar, David E | Buys, Saundra S | Janavicius, Ramunas | Tihomirova, Laima | Tung, Nadine | Dorfling, Cecilia M | van Rensburg, Elizabeth J | Neuhausen, Susan L | Ejlertsen, Bent | Hansen, Thomas V O | Osorio, Ana | Benitez, Javier | Rando, Rachel | Weitzel, Jeffrey N | Bonanni, Bernardo | Peissel, Bernard | Manoukian, Siranoush | Papi, Laura | Ottini, Laura | Konstantopoulou, Irene | Apostolou, Paraskevi | Garber, Judy | Rashid, Muhammad Usman | Frost, Debra | Izatt, Louise | Ellis, Steve | Godwin, Andrew K | Arnold, Norbert | Niederacher, Dieter | Rhiem, Kerstin | Bogdanova-Markov, Nadja | Sagne, Charlotte | Stoppa-Lyonnet, Dominique | Damiola, Francesca | Sinilnikova, Olga M | Mazoyer, Sylvie | Isaacs, Claudine | Claes, Kathleen B M | De Leeneer, Kim | de la Hoya, Miguel | Caldes, Trinidad | Nevanlinna, Heli | Khan, Sofia | Mensenkamp, Arjen R | Hooning, Maartje J | Rookus, Matti A | Kwong, Ava | Olah, Edith | Diez, Orland | Brunet, Joan | Pujana, Miquel Angel | Gronwald, Jacek | Huzarski, Tomasz | Barkardottir, Rosa B | Laframboise, Rachel | Soucy, Penny | Montagna, Marco | Agata, Simona | Teixeira, Manuel R | Park, Sue Kyung | Lindor, Noralane | Couch, Fergus J | Tischkowitz, Marc | Foretova, Lenka | Vijai, Joseph | Offit, Kenneth | Singer, Christian F | Rappaport, Christine | Phelan, Catherine M | Greene, Mark H | Mai, Phuong L | Rennert, Gad | Imyanitov, Evgeny N | Hulick, Peter J | Phillips, Kelly-Anne | Piedmonte, Marion | Mulligan, Anna Marie | Glendon, Gord | Bojesen, Anders | Thomassen, Mads | Caligo, Maria A | Yoon, Sook-Yee | Friedman, Eitan | Laitman, Yael | Borg, Ake | von Wachenfeldt, Anna | Ehrencrona, Hans | Rantala, Johanna | Olopade, Olufunmilayo I | Ganz, Patricia A | Nussbaum, Robert L | Gayther, Simon A | Nathanson, Katherine L | Domchek, Susan M | Arun, Banu K | Mitchell, Gillian | Karlan, Beth Y | Lester, Jenny | Maskarinec, Gertraud | Woolcott, Christy | Scott, Christopher | Stone, Jennifer | Apicella, Carmel | Tamimi, Rulla | Luben, Robert | Khaw, Kay-Tee | Helland, Åslaug | Haakensen, Vilde | Dowsett, Mitch | Pharoah, Paul D P | Simard, Jacques | Hall, Per | García-Closas, Montserrat | Vachon, Celine | Chenevix-Trench, Georgia | Antoniou, Antonis C | Easton, Douglas F | Edwards, Stacey L
Nature genetics  2016;48(4):374-386.
We analyzed 3,872 common genetic variants across the ESR1 locus (encoding estrogen receptor α) in 118,816 subjects from three international consortia. We found evidence for at least five independent causal variants, each associated with different phenotype sets, including estrogen receptor (ER+ or ER−) and human ERBB2 (HER2+ or HER2−) tumor subtypes, mammographic density and tumor grade. The best candidate causal variants for ER− tumors lie in four separate enhancer elements, and their risk alleles reduce expression of ESR1, RMND1 and CCDC170, whereas the risk alleles of the strongest candidates for the remaining independent causal variant disrupt a silencer element and putatively increase ESR1 and RMND1 expression.
doi:10.1038/ng.3521
PMCID: PMC4938803  PMID: 26928228
2.  Functional mechanisms underlying pleiotropic risk alleles at the 19p13.1 breast–ovarian cancer susceptibility locus 
Lawrenson, Kate | Kar, Siddhartha | McCue, Karen | Kuchenbaeker, Karoline | Michailidou, Kyriaki | Tyrer, Jonathan | Beesley, Jonathan | Ramus, Susan J. | Li, Qiyuan | Delgado, Melissa K. | Lee, Janet M. | Aittomäki, Kristiina | Andrulis, Irene L. | Anton-Culver, Hoda | Arndt, Volker | Arun, Banu K. | Arver, Brita | Bandera, Elisa V. | Barile, Monica | Barkardottir, Rosa B. | Barrowdale, Daniel | Beckmann, Matthias W. | Benitez, Javier | Berchuck, Andrew | Bisogna, Maria | Bjorge, Line | Blomqvist, Carl | Blot, William | Bogdanova, Natalia | Bojesen, Anders | Bojesen, Stig E. | Bolla, Manjeet K. | Bonanni, Bernardo | Børresen-Dale, Anne-Lise | Brauch, Hiltrud | Brennan, Paul | Brenner, Hermann | Bruinsma, Fiona | Brunet, Joan | Buhari, Shaik Ahmad | Burwinkel, Barbara | Butzow, Ralf | Buys, Saundra S. | Cai, Qiuyin | Caldes, Trinidad | Campbell, Ian | Canniotto, Rikki | Chang-Claude, Jenny | Chiquette, Jocelyne | Choi, Ji-Yeob | Claes, Kathleen B. M. | Cook, Linda S. | Cox, Angela | Cramer, Daniel W. | Cross, Simon S. | Cybulski, Cezary | Czene, Kamila | Daly, Mary B. | Damiola, Francesca | Dansonka-Mieszkowska, Agnieszka | Darabi, Hatef | Dennis, Joe | Devilee, Peter | Diez, Orland | Doherty, Jennifer A. | Domchek, Susan M. | Dorfling, Cecilia M. | Dörk, Thilo | Dumont, Martine | Ehrencrona, Hans | Ejlertsen, Bent | Ellis, Steve | Engel, Christoph | Lee, Eunjung | Evans, D. Gareth | Fasching, Peter A. | Feliubadalo, Lidia | Figueroa, Jonine | Flesch-Janys, Dieter | Fletcher, Olivia | Flyger, Henrik | Foretova, Lenka | Fostira, Florentia | Foulkes, William D. | Fridley, Brooke L. | Friedman, Eitan | Frost, Debra | Gambino, Gaetana | Ganz, Patricia A. | Garber, Judy | García-Closas, Montserrat | Gentry-Maharaj, Aleksandra | Ghoussaini, Maya | Giles, Graham G. | Glasspool, Rosalind | Godwin, Andrew K. | Goldberg, Mark S. | Goldgar, David E. | González-Neira, Anna | Goode, Ellen L. | Goodman, Marc T. | Greene, Mark H. | Gronwald, Jacek | Guénel, Pascal | Haiman, Christopher A. | Hall, Per | Hallberg, Emily | Hamann, Ute | Hansen, Thomas V. O. | Harrington, Patricia A. | Hartman, Mikael | Hassan, Norhashimah | Healey, Sue | Heitz, Florian | Herzog, Josef | Høgdall, Estrid | Høgdall, Claus K. | Hogervorst, Frans B. L. | Hollestelle, Antoinette | Hopper, John L. | Hulick, Peter J. | Huzarski, Tomasz | Imyanitov, Evgeny N. | Isaacs, Claudine | Ito, Hidemi | Jakubowska, Anna | Janavicius, Ramunas | Jensen, Allan | John, Esther M. | Johnson, Nichola | Kabisch, Maria | Kang, Daehee | Kapuscinski, Miroslav | Karlan, Beth Y. | Khan, Sofia | Kiemeney, Lambertus A. | Kjaer, Susanne Kruger | Knight, Julia A. | Konstantopoulou, Irene | Kosma, Veli-Matti | Kristensen, Vessela | Kupryjanczyk, Jolanta | Kwong, Ava | de la Hoya, Miguel | Laitman, Yael | Lambrechts, Diether | Le, Nhu | De Leeneer, Kim | Lester, Jenny | Levine, Douglas A. | Li, Jingmei | Lindblom, Annika | Long, Jirong | Lophatananon, Artitaya | Loud, Jennifer T. | Lu, Karen | Lubinski, Jan | Mannermaa, Arto | Manoukian, Siranoush | Le Marchand, Loic | Margolin, Sara | Marme, Frederik | Massuger, Leon F. A. G. | Matsuo, Keitaro | Mazoyer, Sylvie | McGuffog, Lesley | McLean, Catriona | McNeish, Iain | Meindl, Alfons | Menon, Usha | Mensenkamp, Arjen R. | Milne, Roger L. | Montagna, Marco | Moysich, Kirsten B. | Muir, Kenneth | Mulligan, Anna Marie | Nathanson, Katherine L. | Ness, Roberta B. | Neuhausen, Susan L. | Nevanlinna, Heli | Nord, Silje | Nussbaum, Robert L. | Odunsi, Kunle | Offit, Kenneth | Olah, Edith | Olopade, Olufunmilayo I. | Olson, Janet E. | Olswold, Curtis | O'Malley, David | Orlow, Irene | Orr, Nick | Osorio, Ana | Park, Sue Kyung | Pearce, Celeste L. | Pejovic, Tanja | Peterlongo, Paolo | Pfeiler, Georg | Phelan, Catherine M. | Poole, Elizabeth M. | Pylkäs, Katri | Radice, Paolo | Rantala, Johanna | Rashid, Muhammad Usman | Rennert, Gad | Rhenius, Valerie | Rhiem, Kerstin | Risch, Harvey A. | Rodriguez, Gus | Rossing, Mary Anne | Rudolph, Anja | Salvesen, Helga B. | Sangrajrang, Suleeporn | Sawyer, Elinor J. | Schildkraut, Joellen M. | Schmidt, Marjanka K. | Schmutzler, Rita K. | Sellers, Thomas A. | Seynaeve, Caroline | Shah, Mitul | Shen, Chen-Yang | Shu, Xiao-Ou | Sieh, Weiva | Singer, Christian F. | Sinilnikova, Olga M. | Slager, Susan | Song, Honglin | Soucy, Penny | Southey, Melissa C. | Stenmark-Askmalm, Marie | Stoppa-Lyonnet, Dominique | Sutter, Christian | Swerdlow, Anthony | Tchatchou, Sandrine | Teixeira, Manuel R. | Teo, Soo H. | Terry, Kathryn L. | Terry, Mary Beth | Thomassen, Mads | Tibiletti, Maria Grazia | Tihomirova, Laima | Tognazzo, Silvia | Toland, Amanda Ewart | Tomlinson, Ian | Torres, Diana | Truong, Thérèse | Tseng, Chiu-chen | Tung, Nadine | Tworoger, Shelley S. | Vachon, Celine | van den Ouweland, Ans M. W. | van Doorn, Helena C. | van Rensburg, Elizabeth J. | Van't Veer, Laura J. | Vanderstichele, Adriaan | Vergote, Ignace | Vijai, Joseph | Wang, Qin | Wang-Gohrke, Shan | Weitzel, Jeffrey N. | Wentzensen, Nicolas | Whittemore, Alice S. | Wildiers, Hans | Winqvist, Robert | Wu, Anna H. | Yannoukakos, Drakoulis | Yoon, Sook-Yee | Yu, Jyh-Cherng | Zheng, Wei | Zheng, Ying | Khanna, Kum Kum | Simard, Jacques | Monteiro, Alvaro N. | French, Juliet D. | Couch, Fergus J. | Freedman, Matthew L. | Easton, Douglas F. | Dunning, Alison M. | Pharoah, Paul D. | Edwards, Stacey L. | Chenevix-Trench, Georgia | Antoniou, Antonis C. | Gayther, Simon A.
Nature Communications  2016;7:12675.
A locus at 19p13 is associated with breast cancer (BC) and ovarian cancer (OC) risk. Here we analyse 438 SNPs in this region in 46,451 BC and 15,438 OC cases, 15,252 BRCA1 mutation carriers and 73,444 controls and identify 13 candidate causal SNPs associated with serous OC (P=9.2 × 10−20), ER-negative BC (P=1.1 × 10−13), BRCA1-associated BC (P=7.7 × 10−16) and triple negative BC (P-diff=2 × 10−5). Genotype-gene expression associations are identified for candidate target genes ANKLE1 (P=2 × 10−3) and ABHD8 (P<2 × 10−3). Chromosome conformation capture identifies interactions between four candidate SNPs and ABHD8, and luciferase assays indicate six risk alleles increased transactivation of the ADHD8 promoter. Targeted deletion of a region containing risk SNP rs56069439 in a putative enhancer induces ANKLE1 downregulation; and mRNA stability assays indicate functional effects for an ANKLE1 3′-UTR SNP. Altogether, these data suggest that multiple SNPs at 19p13 regulate ABHD8 and perhaps ANKLE1 expression, and indicate common mechanisms underlying breast and ovarian cancer risk.
A region on chromosome 19p13 is associated with the risk of developing ovarian and breast cancer. Here, the authors genotyped SNPs in this region in thousands of breast and ovarian cancer patients and identified SNPs associated with three genes, which were analysed with functional studies.
doi:10.1038/ncomms12675
PMCID: PMC5023955  PMID: 27601076
3.  Identification of independent association signals and putative functional variants for breast cancer risk through fine-scale mapping of the 12p11 locus 
Zeng, Chenjie | Guo, Xingyi | Long, Jirong | Kuchenbaecker, Karoline B. | Droit, Arnaud | Michailidou, Kyriaki | Ghoussaini, Maya | Kar, Siddhartha | Freeman, Adam | Hopper, John L. | Milne, Roger L. | Bolla, Manjeet K. | Wang, Qin | Dennis, Joe | Agata, Simona | Ahmed, Shahana | Aittomäki, Kristiina | Andrulis, Irene L. | Anton-Culver, Hoda | Antonenkova, Natalia N. | Arason, Adalgeir | Arndt, Volker | Arun, Banu K. | Arver, Brita | Bacot, Francois | Barrowdale, Daniel | Baynes, Caroline | Beeghly-Fadiel, Alicia | Benitez, Javier | Bermisheva, Marina | Blomqvist, Carl | Blot, William J. | Bogdanova, Natalia V. | Bojesen, Stig E. | Bonanni, Bernardo | Borresen-Dale, Anne-Lise | Brand, Judith S. | Brauch, Hiltrud | Brennan, Paul | Brenner, Hermann | Broeks, Annegien | Brüning, Thomas | Burwinkel, Barbara | Buys, Saundra S. | Cai, Qiuyin | Caldes, Trinidad | Campbell, Ian | Carpenter, Jane | Chang-Claude, Jenny | Choi, Ji-Yeob | Claes, Kathleen B. M. | Clarke, Christine | Cox, Angela | Cross, Simon S. | Czene, Kamila | Daly, Mary B. | de la Hoya, Miguel | De Leeneer, Kim | Devilee, Peter | Diez, Orland | Domchek, Susan M. | Doody, Michele | Dorfling, Cecilia M. | Dörk, Thilo | dos-Santos-Silva, Isabel | Dumont, Martine | Dwek, Miriam | Dworniczak, Bernd | Egan, Kathleen | Eilber, Ursula | Einbeigi, Zakaria | Ejlertsen, Bent | Ellis, Steve | Frost, Debra | Lalloo, Fiona | Fasching, Peter A. | Figueroa, Jonine | Flyger, Henrik | Friedlander, Michael | Friedman, Eitan | Gambino, Gaetana | Gao, Yu-Tang | Garber, Judy | García-Closas, Montserrat | Gehrig, Andrea | Damiola, Francesca | Lesueur, Fabienne | Mazoyer, Sylvie | Stoppa-Lyonnet, Dominique | Giles, Graham G. | Godwin, Andrew K. | Goldgar, David E. | González-Neira, Anna | Greene, Mark H. | Guénel, Pascal | Haeberle, Lothar | Haiman, Christopher A. | Hallberg, Emily | Hamann, Ute | Hansen, Thomas V. O. | Hart, Steven | Hartikainen, Jaana M. | Hartman, Mikael | Hassan, Norhashimah | Healey, Sue | Hogervorst, Frans B. L. | Verhoef, Senno | Hendricks, Carolyn B. | Hillemanns, Peter | Hollestelle, Antoinette | Hulick, Peter J. | Hunter, David J. | Imyanitov, Evgeny N. | Isaacs, Claudine | Ito, Hidemi | Jakubowska, Anna | Janavicius, Ramunas | Jaworska-Bieniek, Katarzyna | Jensen, Uffe Birk | John, Esther M. | Joly Beauparlant, Charles | Jones, Michael | Kabisch, Maria | Kang, Daehee | Karlan, Beth Y. | Kauppila, Saila | Kerin, Michael J. | Khan, Sofia | Khusnutdinova, Elza | Knight, Julia A. | Konstantopoulou, Irene | Kraft, Peter | Kwong, Ava | Laitman, Yael | Lambrechts, Diether | Lazaro, Conxi | Le Marchand, Loic | Lee, Chuen Neng | Lee, Min Hyuk | Lester, Jenny | Li, Jingmei | Liljegren, Annelie | Lindblom, Annika | Lophatananon, Artitaya | Lubinski, Jan | Mai, Phuong L. | Mannermaa, Arto | Manoukian, Siranoush | Margolin, Sara | Marme, Frederik | Matsuo, Keitaro | McGuffog, Lesley | Meindl, Alfons | Menegaux, Florence | Montagna, Marco | Muir, Kenneth | Mulligan, Anna Marie | Nathanson, Katherine L. | Neuhausen, Susan L. | Nevanlinna, Heli | Newcomb, Polly A. | Nord, Silje | Nussbaum, Robert L. | Offit, Kenneth | Olah, Edith | Olopade, Olufunmilayo I. | Olswold, Curtis | Osorio, Ana | Papi, Laura | Park-Simon, Tjoung-Won | Paulsson-Karlsson, Ylva | Peeters, Stephanie | Peissel, Bernard | Peterlongo, Paolo | Peto, Julian | Pfeiler, Georg | Phelan, Catherine M. | Presneau, Nadege | Radice, Paolo | Rahman, Nazneen | Ramus, Susan J. | Rashid, Muhammad Usman | Rennert, Gad | Rhiem, Kerstin | Rudolph, Anja | Salani, Ritu | Sangrajrang, Suleeporn | Sawyer, Elinor J. | Schmidt, Marjanka K | Schmutzler, Rita K. | Schoemaker, Minouk J. | Schürmann, Peter | Seynaeve, Caroline | Shen, Chen-Yang | Shrubsole, Martha J. | Shu, Xiao-Ou | Sigurdson, Alice | Singer, Christian F. | Slager, Susan | Soucy, Penny | Southey, Melissa | Steinemann, Doris | Swerdlow, Anthony | Szabo, Csilla I. | Tchatchou, Sandrine | Teixeira, Manuel R. | Teo, Soo H. | Terry, Mary Beth | Tessier, Daniel C. | Teulé, Alex | Thomassen, Mads | Tihomirova, Laima | Tischkowitz, Marc | Toland, Amanda E. | Tung, Nadine | Turnbull, Clare | van den Ouweland, Ans M. W. | van Rensburg, Elizabeth J. | ven den Berg, David | Vijai, Joseph | Wang-Gohrke, Shan | Weitzel, Jeffrey N. | Whittemore, Alice S. | Winqvist, Robert | Wong, Tien Y. | Wu, Anna H. | Yannoukakos, Drakoulis | Yu, Jyh-Cherng | Pharoah, Paul D. P. | Hall, Per | Chenevix-Trench, Georgia | Dunning, Alison M. | Simard, Jacques | Couch, Fergus J. | Antoniou, Antonis C. | Easton, Douglas F. | Zheng, Wei
Background
Multiple recent genome-wide association studies (GWAS) have identified a single nucleotide polymorphism (SNP), rs10771399, at 12p11 that is associated with breast cancer risk.
Method
We performed a fine-scale mapping study of a 700 kb region including 441 genotyped and more than 1300 imputed genetic variants in 48,155 cases and 43,612 controls of European descent, 6269 cases and 6624 controls of East Asian descent and 1116 cases and 932 controls of African descent in the Breast Cancer Association Consortium (BCAC; http://bcac.ccge.medschl.cam.ac.uk/), and in 15,252 BRCA1 mutation carriers in the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA). Stepwise regression analyses were performed to identify independent association signals. Data from the Encyclopedia of DNA Elements project (ENCODE) and the Cancer Genome Atlas (TCGA) were used for functional annotation.
Results
Analysis of data from European descendants found evidence for four independent association signals at 12p11, represented by rs7297051 (odds ratio (OR) = 1.09, 95 % confidence interval (CI) = 1.06–1.12; P = 3 × 10-9), rs805510 (OR = 1.08, 95 % CI = 1.04–1.12, P = 2 × 10-5), and rs1871152 (OR = 1.04, 95 % CI = 1.02–1.06; P = 2 × 10-4) identified in the general populations, and rs113824616 (P = 7 × 10-5) identified in the meta-analysis of BCAC ER-negative cases and BRCA1 mutation carriers. SNPs rs7297051, rs805510 and rs113824616 were also associated with breast cancer risk at P < 0.05 in East Asians, but none of the associations were statistically significant in African descendants. Multiple candidate functional variants are located in putative enhancer sequences. Chromatin interaction data suggested that PTHLH was the likely target gene of these enhancers. Of the six variants with the strongest evidence of potential functionality, rs11049453 was statistically significantly associated with the expression of PTHLH and its nearby gene CCDC91 at P < 0.05.
Conclusion
This study identified four independent association signals at 12p11 and revealed potentially functional variants, providing additional insights into the underlying biological mechanism(s) for the association observed between variants at 12p11 and breast cancer risk.
Electronic supplementary material
The online version of this article (doi:10.1186/s13058-016-0718-0) contains supplementary material, which is available to authorized users.
doi:10.1186/s13058-016-0718-0
PMCID: PMC4962376  PMID: 27459855
Fine-scale mapping; Genetic risk factor; PTHLH; CCDC91; Breast cancer; BRAC1 mutation carriers
4.  Increased chromosomal radiosensitivity in asymptomatic carriers of a heterozygous BRCA1 mutation 
Background
Breast cancer risk increases drastically in individuals carrying a germline BRCA1 mutation. The exposure to ionizing radiation for diagnostic or therapeutic purposes of BRCA1 mutation carriers is counterintuitive, since BRCA1 is active in the DNA damage response pathway. The aim of this study was to investigate whether healthy BRCA1 mutations carriers demonstrate an increased radiosensitivity compared with healthy individuals.
Methods
We defined a novel radiosensitivity indicator (RIND) based on two endpoints measured by the G2 micronucleus assay, reflecting defects in DNA repair and G2 arrest capacity after exposure to doses of 2 or 4 Gy. We investigated if a correlation between the RIND score and nonsense-mediated decay (NMD) could be established.
Results
We found significantly increased radiosensitivity in the cohort of healthy BRCA1 mutation carriers compared with healthy controls. In addition, our analysis showed a significantly different distribution over the RIND scores (p = 0.034, Fisher’s exact test) for healthy BRCA1 mutation carriers compared with non-carriers: 72 % of mutation carriers showed a radiosensitive phenotype (RIND score 1–4), whereas 72 % of the healthy volunteers showed no radiosensitivity (RIND score 0). Furthermore, 28 % of BRCA1 mutation carriers had a RIND score of 3 or 4 (not observed in control subjects). The radiosensitive phenotype was similar for relatives within several families, but not for unrelated individuals carrying the same mutation. The median RIND score was higher in patients with a mutation leading to a premature termination codon (PTC) located in the central part of the gene than in patients with a germline mutation in the 5′ end of the gene.
Conclusions
We show that BRCA1 mutations are associated with a radiosensitive phenotype related to a compromised DNA repair and G2 arrest capacity after exposure to either 2 or 4 Gy. Our study confirms that haploinsufficiency is the mechanism involved in radiosensitivity in patients with a PTC allele, but it suggests that further research is needed to evaluate alternative mechanisms for mutations not subjected to NMD.
Electronic supplementary material
The online version of this article (doi:10.1186/s13058-016-0709-1) contains supplementary material, which is available to authorized users.
doi:10.1186/s13058-016-0709-1
PMCID: PMC4869288  PMID: 27184744
BRCA1 mutations; DNA damage repair; Homologous recombination; G2/M cell-cycle checkpoint; Ionizing radiation; G2 micronucleus assay; Radiosensitivity indicator; Nonsense-mediated decay; Haploinsufficiency
5.  Targeted resequencing and variant validation using pxlence PCR assays 
The advent of next-generation sequencing technologies had a profound impact on molecular diagnostics. PCR is a popular method for target enrichment of disease gene panels. Using our proprietary primer-design pipeline, primerXL, we have created almost one million assays covering over 98% of the human exome. Here we describe the assay specification and both in silico and wet-lab validation of a selected set of 2294 assays using both next-generation sequencing and Sanger sequencing. Using a universal PCR protocol without optimization, these assays result in high coverage uniformity and limited non-specific coverage. In addition, data indicates a positive correlation between the predictive in silico specificity score and the amount of assay non-specific coverage.
doi:10.1016/j.bdq.2015.09.001
PMCID: PMC4822215  PMID: 27077044
PCR; Next-generation sequencing; Sanger sequencing; Amplification specificity
6.  Identification of six new susceptibility loci for invasive epithelial ovarian cancer 
Kuchenbaecker, Karoline B. | Ramus, Susan J. | Tyrer, Jonathan | Lee, Andrew | Shen, Howard C. | Beesley, Jonathan | Lawrenson, Kate | McGuffog, Lesley | Healey, Sue | Lee, Janet M. | Spindler, Tassja J. | Lin, Yvonne G. | Pejovic, Tanja | Bean, Yukie | Li, Qiyuan | Coetzee, Simon | Hazelett, Dennis | Miron, Alexander | Southey, Melissa | Terry, Mary Beth | Goldgar, David E. | Buys, Saundra S. | Janavicius, Ramunas | Dorfling, Cecilia M. | van Rensburg, Elizabeth J. | Neuhausen, Susan L. | Ding, Yuan Chun | Hansen, Thomas V. O. | Jønson, Lars | Gerdes, Anne-Marie | Ejlertsen, Bent | Barrowdale, Daniel | Dennis, Joe | Benitez, Javier | Osorio, Ana | Garcia, Maria Jose | Komenaka, Ian | Weitzel, Jeffrey N. | Ganschow, Pamela | Peterlongo, Paolo | Bernard, Loris | Viel, Alessandra | Bonanni, Bernardo | Peissel, Bernard | Manoukian, Siranoush | Radice, Paolo | Papi, Laura | Ottini, Laura | Fostira, Florentia | Konstantopoulou, Irene | Garber, Judy | Frost, Debra | Perkins, Jo | Platte, Radka | Ellis, Steve | Godwin, Andrew K. | Schmutzler, Rita Katharina | Meindl, Alfons | Engel, Christoph | Sutter, Christian | Sinilnikova, Olga M. | Damiola, Francesca | Mazoyer, Sylvie | Stoppa-Lyonnet, Dominique | Claes, Kathleen | De Leeneer, Kim | Kirk, Judy | Rodriguez, Gustavo C. | Piedmonte, Marion | O'Malley, David M. | de la Hoya, Miguel | Caldes, Trinidad | Aittomäki, Kristiina | Nevanlinna, Heli | Collée, J. Margriet | Rookus, Matti A. | Oosterwijk, Jan C. | Tihomirova, Laima | Tung, Nadine | Hamann, Ute | Isaacs, Claudine | Tischkowitz, Marc | Imyanitov, Evgeny N. | Caligo, Maria A. | Campbell, Ian | Hogervorst, Frans B.L. | Olah, Edith | Diez, Orland | Blanco, Ignacio | Brunet, Joan | Lazaro, Conxi | Pujana, Miquel Angel | Jakubowska, Anna | Gronwald, Jacek | Lubinski, Jan | Sukiennicki, Grzegorz | Barkardottir, Rosa B. | Plante, Marie | Simard, Jacques | Soucy, Penny | Montagna, Marco | Tognazzo, Silvia | Teixeira, Manuel R. | Pankratz, Vernon S. | Wang, Xianshu | Lindor, Noralane | Szabo, Csilla I. | Kauff, Noah | Vijai, Joseph | Aghajanian, Carol A. | Pfeiler, Georg | Berger, Andreas | Singer, Christian F. | Tea, Muy-Kheng | Phelan, Catherine M. | Greene, Mark H. | Mai, Phuong L. | Rennert, Gad | Mulligan, Anna Marie | Tchatchou, Sandrine | Andrulis, Irene L. | Glendon, Gord | Toland, Amanda Ewart | Jensen, Uffe Birk | Kruse, Torben A. | Thomassen, Mads | Bojesen, Anders | Zidan, Jamal | Friedman, Eitan | Laitman, Yael | Soller, Maria | Liljegren, Annelie | Arver, Brita | Einbeigi, Zakaria | Stenmark-Askmalm, Marie | Olopade, Olufunmilayo I. | Nussbaum, Robert L. | Rebbeck, Timothy R. | Nathanson, Katherine L. | Domchek, Susan M. | Lu, Karen H. | Karlan, Beth Y. | Walsh, Christine | Lester, Jenny | Hein, Alexander | Ekici, Arif B. | Beckmann, Matthias W. | Fasching, Peter A. | Lambrechts, Diether | Nieuwenhuysen, Els Van | Vergote, Ignace | Lambrechts, Sandrina | Dicks, Ed | Doherty, Jennifer A. | Wicklund, Kristine G. | Rossing, Mary Anne | Rudolph, Anja | Chang-Claude, Jenny | Wang-Gohrke, Shan | Eilber, Ursula | Moysich, Kirsten B. | Odunsi, Kunle | Sucheston-Campbell, Lara | Lele, Shashi | Wilkens, Lynne R. | Goodman, Marc T. | Thompson, Pamela J. | Shvetsov, Yurii B. | Runnebaum, Ingo B. | Dürst, Matthias | Hillemanns, Peter | Dörk, Thilo | Antonenkova, Natalia | Bogdanova, Natalia | Leminen, Arto | Pelttari, Liisa M. | Butzow, Ralf | Modugno, Francesmary | Kelley, Joseph L. | Edwards, Robert P. | Ness, Roberta B. | du Bois, Andreas | Heitz, Florian | Schwaab, Ira | Harter, Philipp | Matsuo, Keitaro | Hosono, Satoyo | Orsulic, Sandra | Jensen, Allan | Kjaer, Susanne Kruger | Hogdall, Estrid | Hasmad, Hanis Nazihah | Noor Azmi, Mat Adenan | Teo, Soo-Hwang | Woo, Yin-Ling | Fridley, Brooke L. | Goode, Ellen L. | Cunningham, Julie M. | Vierkant, Robert A. | Bruinsma, Fiona | Giles, Graham G. | Liang, Dong | Hildebrandt, Michelle A.T. | Wu, Xifeng | Levine, Douglas A. | Bisogna, Maria | Berchuck, Andrew | Iversen, Edwin S. | Schildkraut, Joellen M. | Concannon, Patrick | Weber, Rachel Palmieri | Cramer, Daniel W. | Terry, Kathryn L. | Poole, Elizabeth M. | Tworoger, Shelley S. | Bandera, Elisa V. | Orlow, Irene | Olson, Sara H. | Krakstad, Camilla | Salvesen, Helga B. | Tangen, Ingvild L. | Bjorge, Line | van Altena, Anne M. | Aben, Katja K.H. | Kiemeney, Lambertus A. | Massuger, Leon F.A.G. | Kellar, Melissa | Brooks-Wilson, Angela | Kelemen, Linda E. | Cook, Linda S. | Le, Nhu D. | Cybulski, Cezary | Yang, Hannah | Lissowska, Jolanta | Brinton, Louise A. | Wentzensen, Nicolas | Hogdall, Claus | Lundvall, Lene | Nedergaard, Lotte | Baker, Helen | Song, Honglin | Eccles, Diana | McNeish, Ian | Paul, James | Carty, Karen | Siddiqui, Nadeem | Glasspool, Rosalind | Whittemore, Alice S. | Rothstein, Joseph H. | McGuire, Valerie | Sieh, Weiva | Ji, Bu-Tian | Zheng, Wei | Shu, Xiao-Ou | Gao, Yu-Tang | Rosen, Barry | Risch, Harvey A. | McLaughlin, John R. | Narod, Steven A. | Monteiro, Alvaro N. | Chen, Ann | Lin, Hui-Yi | Permuth-Wey, Jenny | Sellers, Thomas A. | Tsai, Ya-Yu | Chen, Zhihua | Ziogas, Argyrios | Anton-Culver, Hoda | Gentry-Maharaj, Aleksandra | Menon, Usha | Harrington, Patricia | Lee, Alice W. | Wu, Anna H. | Pearce, Celeste L. | Coetzee, Gerhard A. | Pike, Malcolm C. | Dansonka-Mieszkowska, Agnieszka | Timorek, Agnieszka | Rzepecka, Iwona K. | Kupryjanczyk, Jolanta | Freedman, Matt | Noushmehr, Houtan | Easton, Douglas F. | Offit, Kenneth | Couch, Fergus J. | Gayther, Simon | Pharoah, Paul P. | Antoniou, Antonis C. | Chenevix-Trench, Georgia
Nature genetics  2015;47(2):164-171.
doi:10.1038/ng.3185
PMCID: PMC4445140  PMID: 25581431
7.  An original phylogenetic approach identified mitochondrial haplogroup T1a1 as inversely associated with breast cancer risk in BRCA2 mutation carriers 
Blein, Sophie | Bardel, Claire | Danjean, Vincent | McGuffog, Lesley | Healey, Sue | Barrowdale, Daniel | Lee, Andrew | Dennis, Joe | Kuchenbaecker, Karoline B | Soucy, Penny | Terry, Mary Beth | Chung, Wendy K | Goldgar, David E | Buys, Saundra S | Janavicius, Ramunas | Tihomirova, Laima | Tung, Nadine | Dorfling, Cecilia M | van Rensburg, Elizabeth J | Neuhausen, Susan L | Ding, Yuan Chun | Gerdes, Anne-Marie | Ejlertsen, Bent | Nielsen, Finn C | Hansen, Thomas VO | Osorio, Ana | Benitez, Javier | Conejero, Raquel Andrés | Segota, Ena | Weitzel, Jeffrey N | Thelander, Margo | Peterlongo, Paolo | Radice, Paolo | Pensotti, Valeria | Dolcetti, Riccardo | Bonanni, Bernardo | Peissel, Bernard | Zaffaroni, Daniela | Scuvera, Giulietta | Manoukian, Siranoush | Varesco, Liliana | Capone, Gabriele L | Papi, Laura | Ottini, Laura | Yannoukakos, Drakoulis | Konstantopoulou, Irene | Garber, Judy | Hamann, Ute | Donaldson, Alan | Brady, Angela | Brewer, Carole | Foo, Claire | Evans, D Gareth | Frost, Debra | Eccles, Diana | Douglas, Fiona | Cook, Jackie | Adlard, Julian | Barwell, Julian | Walker, Lisa | Izatt, Louise | Side, Lucy E | Kennedy, M John | Tischkowitz, Marc | Rogers, Mark T | Porteous, Mary E | Morrison, Patrick J | Platte, Radka | Eeles, Ros | Davidson, Rosemarie | Hodgson, Shirley | Cole, Trevor | Godwin, Andrew K | Isaacs, Claudine | Claes, Kathleen | De Leeneer, Kim | Meindl, Alfons | Gehrig, Andrea | Wappenschmidt, Barbara | Sutter, Christian | Engel, Christoph | Niederacher, Dieter | Steinemann, Doris | Plendl, Hansjoerg | Kast, Karin | Rhiem, Kerstin | Ditsch, Nina | Arnold, Norbert | Varon-Mateeva, Raymonda | Schmutzler, Rita K | Preisler-Adams, Sabine | Markov, Nadja Bogdanova | Wang-Gohrke, Shan | de Pauw, Antoine | Lefol, Cédrick | Lasset, Christine | Leroux, Dominique | Rouleau, Etienne | Damiola, Francesca | Dreyfus, Hélène | Barjhoux, Laure | Golmard, Lisa | Uhrhammer, Nancy | Bonadona, Valérie | Sornin, Valérie | Bignon, Yves-Jean | Carter, Jonathan | Van Le, Linda | Piedmonte, Marion | DiSilvestro, Paul A | de la Hoya, Miguel | Caldes, Trinidad | Nevanlinna, Heli | Aittomäki, Kristiina | Jager, Agnes | van den Ouweland, Ans MW | Kets, Carolien M | Aalfs, Cora M | van Leeuwen, Flora E | Hogervorst, Frans BL | Meijers-Heijboer, Hanne EJ | Oosterwijk, Jan C | van Roozendaal, Kees EP | Rookus, Matti A | Devilee, Peter | van der Luijt, Rob B | Olah, Edith | Diez, Orland | Teulé, Alex | Lazaro, Conxi | Blanco, Ignacio | Del Valle, Jesús | Jakubowska, Anna | Sukiennicki, Grzegorz | Gronwald, Jacek | Lubinski, Jan | Durda, Katarzyna | Jaworska-Bieniek, Katarzyna | Agnarsson, Bjarni A | Maugard, Christine | Amadori, Alberto | Montagna, Marco | Teixeira, Manuel R | Spurdle, Amanda B | Foulkes, William | Olswold, Curtis | Lindor, Noralane M | Pankratz, Vernon S | Szabo, Csilla I | Lincoln, Anne | Jacobs, Lauren | Corines, Marina | Robson, Mark | Vijai, Joseph | Berger, Andreas | Fink-Retter, Anneliese | Singer, Christian F | Rappaport, Christine | Kaulich, Daphne Geschwantler | Pfeiler, Georg | Tea, Muy-Kheng | Greene, Mark H | Mai, Phuong L | Rennert, Gad | Imyanitov, Evgeny N | Mulligan, Anna Marie | Glendon, Gord | Andrulis, Irene L | Tchatchou, Sandrine | Toland, Amanda Ewart | Pedersen, Inge Sokilde | Thomassen, Mads | Kruse, Torben A | Jensen, Uffe Birk | Caligo, Maria A | Friedman, Eitan | Zidan, Jamal | Laitman, Yael | Lindblom, Annika | Melin, Beatrice | Arver, Brita | Loman, Niklas | Rosenquist, Richard | Olopade, Olufunmilayo I | Nussbaum, Robert L | Ramus, Susan J | Nathanson, Katherine L | Domchek, Susan M | Rebbeck, Timothy R | Arun, Banu K | Mitchell, Gillian | Karlan, Beth Y | Lester, Jenny | Orsulic, Sandra | Stoppa-Lyonnet, Dominique | Thomas, Gilles | Simard, Jacques | Couch, Fergus J | Offit, Kenneth | Easton, Douglas F | Chenevix-Trench, Georgia | Antoniou, Antonis C | Mazoyer, Sylvie | Phelan, Catherine M | Sinilnikova, Olga M | Cox, David G
Introduction
Individuals carrying pathogenic mutations in the BRCA1 and BRCA2 genes have a high lifetime risk of breast cancer. BRCA1 and BRCA2 are involved in DNA double-strand break repair, DNA alterations that can be caused by exposure to reactive oxygen species, a main source of which are mitochondria. Mitochondrial genome variations affect electron transport chain efficiency and reactive oxygen species production. Individuals with different mitochondrial haplogroups differ in their metabolism and sensitivity to oxidative stress. Variability in mitochondrial genetic background can alter reactive oxygen species production, leading to cancer risk. In the present study, we tested the hypothesis that mitochondrial haplogroups modify breast cancer risk in BRCA1/2 mutation carriers.
Methods
We genotyped 22,214 (11,421 affected, 10,793 unaffected) mutation carriers belonging to the Consortium of Investigators of Modifiers of BRCA1/2 for 129 mitochondrial polymorphisms using the iCOGS array. Haplogroup inference and association detection were performed using a phylogenetic approach. ALTree was applied to explore the reference mitochondrial evolutionary tree and detect subclades enriched in affected or unaffected individuals.
Results
We discovered that subclade T1a1 was depleted in affected BRCA2 mutation carriers compared with the rest of clade T (hazard ratio (HR) = 0.55; 95% confidence interval (CI), 0.34 to 0.88; P = 0.01). Compared with the most frequent haplogroup in the general population (that is, H and T clades), the T1a1 haplogroup has a HR of 0.62 (95% CI, 0.40 to 0.95; P = 0.03). We also identified three potential susceptibility loci, including G13708A/rs28359178, which has demonstrated an inverse association with familial breast cancer risk.
Conclusions
This study illustrates how original approaches such as the phylogeny-based method we used can empower classical molecular epidemiological studies aimed at identifying association or risk modification effects.
Electronic supplementary material
The online version of this article (doi:10.1186/s13058-015-0567-2) contains supplementary material, which is available to authorized users.
doi:10.1186/s13058-015-0567-2
PMCID: PMC4478717  PMID: 25925750
8.  Comparison of mRNA Splicing Assay Protocols across Multiple Laboratories: Recommendations for Best Practice in Standardized Clinical Testing 
Clinical chemistry  2013;60(2):341-352.
Background
Accurate evaluation of unclassified sequence variants in cancer predisposition genes is essential for clinical management and depends on a multifactorial analysis of clinical, genetic, pathologic, and bioinformatic variables and assays of transcript length and abundance. The integrity of assay data in turn relies on appropriate assay design, interpretation, and reporting.
Methods
We conducted a multicenter investigation to compare mRNA splicing assay protocols used by members of the ENIGMA (Evidence-Based Network for the Interpretation of Germline Mutant Alleles) consortium. We compared similarities and differences in results derived from analysis of a panel of breast cancer 1, early onset (BRCA1) and breast cancer 2, early onset (BRCA2) gene variants known to alter splicing (BRCA1: c.135-1G>T, c.591C>T, c.594-2A>C, c.671-2A>G, and c.5467+5G>C and BRCA2: c.426-12_8delGTTTT, c.7988A>T, c.8632+1G>A, and c.9501+3A>T). Differences in protocols were then assessed to determine which elements were critical in reliable assay design.
Results
PCR primer design strategies, PCR conditions, and product detection methods, combined with a prior knowledge of expected alternative transcripts, were the key factors for accurate splicing assay results. For example, because of the position of primers and PCR extension times, several isoforms associated with BRCA1, c.594-2A>C and c.671-2A>G, were not detected by many sites. Variation was most evident for the detection of low-abundance transcripts (e.g., BRCA2 c.8632+1G>A Δ19,20 and BRCA1 c.135-1g>t Δ5q and Δ3). Detection of low-abundance transcripts was sometimes addressed by using more analytically sensitive detection methods (e.g., BRCA2 c.426-12_8delGTTTT ins18bp).
Conclusions
We provide recommendations for best practice and raise key issues to consider when designing mRNA assays for evaluation of unclassified sequence variants.
doi:10.1373/clinchem.2013.210658
PMCID: PMC4351044  PMID: 24212087
9.  Practical Tools to Implement Massive Parallel Pyrosequencing of PCR Products in Next Generation Molecular Diagnostics 
PLoS ONE  2011;6(9):e25531.
Despite improvements in terms of sequence quality and price per basepair, Sanger sequencing remains restricted to screening of individual disease genes. The development of massively parallel sequencing (MPS) technologies heralded an era in which molecular diagnostics for multigenic disorders becomes reality. Here, we outline different PCR amplification based strategies for the screening of a multitude of genes in a patient cohort. We performed a thorough evaluation in terms of set-up, coverage and sequencing variants on the data of 10 GS-FLX experiments (over 200 patients). Crucially, we determined the actual coverage that is required for reliable diagnostic results using MPS, and provide a tool to calculate the number of patients that can be screened in a single run. Finally, we provide an overview of factors contributing to false negative or false positive mutation calls and suggest ways to maximize sensitivity and specificity, both important in a routine setting. By describing practical strategies for screening of multigenic disorders in a multitude of samples and providing answers to questions about minimum required coverage, the number of patients that can be screened in a single run and the factors that may affect sensitivity and specificity we hope to facilitate the implementation of MPS technology in molecular diagnostics.
doi:10.1371/journal.pone.0025531
PMCID: PMC3184136  PMID: 21980484
10.  Analysing 454 amplicon resequencing experiments using the modular and database oriented Variant Identification Pipeline 
BMC Bioinformatics  2010;11:269.
Background
Next-generation amplicon sequencing enables high-throughput genetic diagnostics, sequencing multiple genes in several patients together in one sequencing run. Currently, no open-source out-of-the-box software solution exists that reliably reports detected genetic variations and that can be used to improve future sequencing effectiveness by analyzing the PCR reactions.
Results
We developed an integrated database oriented software pipeline for analysis of 454/Roche GS-FLX amplicon resequencing experiments using Perl and a relational database. The pipeline enables variation detection, variation detection validation, and advanced data analysis, which provides information that can be used to optimize PCR efficiency using traditional means. The modular approach enables customization of the pipeline where needed and allows researchers to adopt their analysis pipeline to their experiments. Clear documentation and training data is available to test and validate the pipeline prior to using it on real sequencing data.
Conclusions
We designed an open-source database oriented pipeline that enables advanced analysis of 454/Roche GS-FLX amplicon resequencing experiments using SQL-statements. This modular database approach allows easy coupling with other pipeline modules such as variant interpretation or a LIMS system. There is also a set of standard reporting scripts available.
doi:10.1186/1471-2105-11-269
PMCID: PMC2880033  PMID: 20487544

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