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Catalogo dei prodotti della ricerca
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.
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 V. O.; 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 M. W.; Kets, Carolien M.; Aalfs, Cora M.; van Leeuwen, Flora E.; Hogervorst, Frans B. L.; Meijers Heijboer, Hanne E. J.; Oosterwijk, Jan C.; van Roozendaal, Kees E. P.; 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.; Angelakos, Maggie; Maskiell, Judi; Dite, Gillian; Tsimiklis, Helen; Rudaitis, Vilius; Griškevicius, Laimonas; Eglitis, Drs Janis; Krilova, Anna; Stengrevics, Aivars; Ding, Chun; Steele, Linda; Barroso, Alicia; Alonso, Rosario; Pita, Guillermo; Viel, Alessandra; della Puppa, Lara; Barile, Monica; Tommasi, Stefania; Pilato, Brunella; Lambo, Rossana; Martayan, Aline; Tibiletti, Maria Grazia; Ellis, Steve; Fineberg, Elena; Miedzybrodzka, Zosia; Gregory, Helen; Jeffers, Lisa; Ong, Kai Ren; Hoffman, Jonathan; James, Margaret; Paterson, Joan; Taylor, Amy; Murray, Alexandra; Mccann, Emma; Barton, David; Drummond, Sarah; Kivuva, Emma; Searle, Anne; Goodman, Selina; Hill, Kathryn; Murday, Victoria; Bradshaw, Nicola; Snadden, Lesley; Longmuir, Mark; Watt, Catherine; Gibson, Sarah; Haque, Eshika; Tobias, Ed; Duncan, Alexis; Jacobs, Chris; Langman, Caroline; Dorkins, Huw; Serra Feliu, Gemma; Ellis, Ian; Houghton, Catherine; Lalloo, Fiona; Taylor, Jane; Male, Alison; Berlin, Cheryl; Eason, Jacqueline; Collier, Rebecca; Claber, Oonagh; Jobson, Irene; Mcleod, Diane; Halliday, Dorothy; Durell, Sarah; Stayner, Barbara; Shanley, Susan; Rahman, Nazneen; Houlston, Richard; Bancroft, Elizabeth; Page, Elizabeth; Ardern Jones, Audrey; Kohut, Kelly; Wiggins, Jennifer; Castro, Elena; Killick, Emma; Martin, Sue; Rea, Gillian; Kulkarni, Anjana; Quarrell, Oliver; Bardsley, Cathryn; Goff, Sheila; Brice, Glen; Winchester, Lizzie; Eddy, Charlotte; Tripathi, Vishakha; Attard, Virginia; Lehmann, Anna; Lucassen, Anneke; Crawford, Gillian; Mcbride, Donna; Smalley, Sarah; Weaver, Jo Ellen; Bove, Betsy; Verny Pierre, Carole; Calender, Alain; Giraud, Sophie; Léone, Mélanie; Gauthier Villars, Marion; Buecher, Bruno; Houdayer, Claude; Moncoutier, Virginie; Belotti, Muriel; Tirapo, Carole; Bressac de Paillerets, Brigitte; Caron, Olivier; Handallou, Sandrine; Hardouin, Agnès; Berthet, Pascaline; Sobol, Hagay; Bourdon, Violaine; Noguchi, Tetsuro; Remenieras, Audrey; Eisinger, François; Coupier, Isabelle; Pujol, Pascal; Peyrat, Jean Philippe; Fournier, Joëlle; Révillion, Françoise; Vennin, Philippe; Adenis, Claude; Lidereau, Rosette; Demange, Liliane; Nogues, Catherine; Muller, Danièle; Fricker, Jean Pierre; Barouk Simonet, Emmanuelle; Bonnet, Françoise; Bubien, Virginie; Sevenet, Nicolas; Longy, Michel; Toulas, Christine; Guimbaud, Rosine; Gladieff, Laurence; Feillel, Viviane; Rebischung, Christine; Peysselon, Magalie; Coron, Fanny; Faivre, Laurence; Prieur, Fabienne; Lebrun, Marine; Kientz, Caroline; Ferrer, Sandra Fert; Frénay, Marc; Vénat Bouvet, Laurence; Delnatte, Capucine; Mortemousque, Isabelle; Coulet, Florence; Colas, Chrystelle; Soubrier, Florent; Sokolowska, Johanna; Bronner, Myriam; Collonge Rame, Marie Agnès; Damette, Alexandre; Lynch, Henry T.; Snyder, Carrie L.; Muranen, Taru A.; Blomqvist, Drs Carl; Aaltonen, Kirsimari; Erkkilä, Irja; Palola, Virpi; Verhoef, S.; Schmidt, M. K.; de Lange, J. L.; Wijnands, R.; Collée, J. M.; Hooning, M. J.; Seynaeve, C.; van Deurzen, C. H. M.; Obdeijn, I. M.; van Asperen, C. J.; Wijnen, J. T.; Tollenaar, R. A. E. M.; van Cronenburg, T. C. T. E. F.; Mensenkamp, A. R.; Ausems, M. G. E. M.; van Os, T. A. M.; Gille, J. J. P.; Waisfisz, Q.; Gómez Garcia, E. B.; Blok, M. J.; van der Hout, A. H.; Mourits, M. J.; de Bock, G. H.; Vasen, H. F.; Siesling, S.; Overbeek, L. I. H.; Papp, Janos; Vaszko, Tibor; Bozsik, Aniko; Pocza, Timea; Franko, Judit; Balogh, Maria; Domokos, Gabriella; Ferenczi, Judit; Balmaña, J.; Capella, Gabriel; Dumont, Martine; Tranchant, Martine; Peixoto, Ana; Santos, Catarina; Rocha, Patrícia; Pinto, Pedro; Thorne, Heather; Niedermayr, Eveline; Foretova, Lenka; Machackova, Eva; Zikan, Michal; Pohlreich, Petr; Kleibl, Zdenek; Dishon, Sara; Lejbkowicz, Flavio; Pinchev, Mila; Senter, Leigha; Sweet, Kevin; Craven, Caroline; O'Conor, Michelle; Borg, Ake; Olsson, Håkan; Jernström, Helena; Henriksson, Karin; Harbst, Katja; Soller, Maria; Kristoffersson, Ulf; Öfverholm, Anna; Nordling, Margareta; Karlsson, Per; Einbeigi, Zakaria; von Wachenfeldt, Anna; Liljegren, Annelie; Bustinza, Gisela Barbany; Rantala, Johanna; Ardnor, Christina Edwinsdotter; Emanuelsson, Monica; Ehrencrona, Hans; Pigg, Maritta Hellström; Stenmark Askmalm, Marie; Liedgren, Sigrun; Zvocec, Cecilia; Niu, Qun; Seldon, Joyce; Kwan, Lorna; Crawford, Beth; Loranger, Kate; Mak, Julie; Stewart, Nicola; Lee, Robin; Blanco, Amie; Conrad, Peggy; Chan, Salina; Pharoah, Paul D. P.; Gayther, Simon; Pye, Carole; Harrington, Patricia; Wozniak, Eva; Lindeman, Geoffrey; Harris, Marion; Delatycki, Martin; Sawyer, Sarah; Driessen, Rebecca; Thompson, Ella; Breast Cancer Family Registry, Null; Embrace, Null. - In: BREAST CANCER RESEARCH. - ISSN 1465-5411. - 17:1(2015), p. 61. [10.1186/s13058-015-0567-2]
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 V. O.;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 M. W.;Kets, Carolien M.;Aalfs, Cora M.;van Leeuwen, Flora E.;Hogervorst, Frans B. L.;Meijers Heijboer, Hanne E. J.;Oosterwijk, Jan C.;van Roozendaal, Kees E. P.;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.;Angelakos, Maggie;Maskiell, Judi;Dite, Gillian;Tsimiklis, Helen;Rudaitis, Vilius;Griškevicius, Laimonas;Eglitis, Drs Janis;Krilova, Anna;Stengrevics, Aivars;Ding, Chun;Steele, Linda;Barroso, Alicia;Alonso, Rosario;Pita, Guillermo;Viel, Alessandra;della Puppa, Lara;Barile, Monica;Tommasi, Stefania;Pilato, Brunella;Lambo, Rossana;Martayan, Aline;Tibiletti, Maria Grazia;Ellis, Steve;Fineberg, Elena;Miedzybrodzka, Zosia;Gregory, Helen;Jeffers, Lisa;Ong, Kai Ren;Hoffman, Jonathan;James, Margaret;Paterson, Joan;Taylor, Amy;Murray, Alexandra;Mccann, Emma;Barton, David;Drummond, Sarah;Kivuva, Emma;Searle, Anne;Goodman, Selina;Hill, Kathryn;Murday, Victoria;Bradshaw, Nicola;Snadden, Lesley;Longmuir, Mark;Watt, Catherine;Gibson, Sarah;Haque, Eshika;Tobias, Ed;Duncan, Alexis;Jacobs, Chris;Langman, Caroline;Dorkins, Huw;Serra Feliu, Gemma;Ellis, Ian;Houghton, Catherine;Lalloo, Fiona;Taylor, Jane;Male, Alison;Berlin, Cheryl;Eason, Jacqueline;Collier, Rebecca;Claber, Oonagh;Jobson, Irene;Mcleod, Diane;Halliday, Dorothy;Durell, Sarah;Stayner, Barbara;Shanley, Susan;Rahman, Nazneen;Houlston, Richard;Bancroft, Elizabeth;Page, Elizabeth;Ardern Jones, Audrey;Kohut, Kelly;Wiggins, Jennifer;Castro, Elena;Killick, Emma;Martin, Sue;Rea, Gillian;Kulkarni, Anjana;Quarrell, Oliver;Bardsley, Cathryn;Goff, Sheila;Brice, Glen;Winchester, Lizzie;Eddy, Charlotte;Tripathi, Vishakha;Attard, Virginia;Lehmann, Anna;Lucassen, Anneke;Crawford, Gillian;Mcbride, Donna;Smalley, Sarah;Weaver, Jo Ellen;Bove, Betsy;Verny Pierre, Carole;Calender, Alain;Giraud, Sophie;Léone, Mélanie;Gauthier Villars, Marion;Buecher, Bruno;Houdayer, Claude;Moncoutier, Virginie;Belotti, Muriel;Tirapo, Carole;Bressac de Paillerets, Brigitte;Caron, Olivier;Handallou, Sandrine;Hardouin, Agnès;Berthet, Pascaline;Sobol, Hagay;Bourdon, Violaine;Noguchi, Tetsuro;Remenieras, Audrey;Eisinger, François;Coupier, Isabelle;Pujol, Pascal;Peyrat, Jean Philippe;Fournier, Joëlle;Révillion, Françoise;Vennin, Philippe;Adenis, Claude;Lidereau, Rosette;Demange, Liliane;Nogues, Catherine;Muller, Danièle;Fricker, Jean Pierre;Barouk Simonet, Emmanuelle;Bonnet, Françoise;Bubien, Virginie;Sevenet, Nicolas;Longy, Michel;Toulas, Christine;Guimbaud, Rosine;Gladieff, Laurence;Feillel, Viviane;Rebischung, Christine;Peysselon, Magalie;Coron, Fanny;Faivre, Laurence;Prieur, Fabienne;Lebrun, Marine;Kientz, Caroline;Ferrer, Sandra Fert;Frénay, Marc;Vénat Bouvet, Laurence;Delnatte, Capucine;Mortemousque, Isabelle;Coulet, Florence;Colas, Chrystelle;Soubrier, Florent;Sokolowska, Johanna;Bronner, Myriam;Collonge Rame, Marie Agnès;Damette, Alexandre;Lynch, Henry T.;Snyder, Carrie L.;Muranen, Taru A.;Blomqvist, Drs Carl;Aaltonen, Kirsimari;Erkkilä, Irja;Palola, Virpi;Verhoef, S.;Schmidt, M. K.;de Lange, J. L.;Wijnands, R.;Collée, J. M.;Hooning, M. J.;Seynaeve, C.;van Deurzen, C. H. M.;Obdeijn, I. M.;van Asperen, C. J.;Wijnen, J. T.;Tollenaar, R. A. E. M.;van Cronenburg, T. C. T. E. F.;Mensenkamp, A. R.;Ausems, M. G. E. M.;van Os, T. A. M.;Gille, J. J. P.;Waisfisz, Q.;Gómez Garcia, E. B.;Blok, M. J.;van der Hout, A. H.;Mourits, M. J.;de Bock, G. H.;Vasen, H. F.;Siesling, S.;Overbeek, L. I. H.;Papp, Janos;Vaszko, Tibor;Bozsik, Aniko;Pocza, Timea;Franko, Judit;Balogh, Maria;Domokos, Gabriella;Ferenczi, Judit;Balmaña, J.;Capella, Gabriel;Dumont, Martine;Tranchant, Martine;Peixoto, Ana;Santos, Catarina;Rocha, Patrícia;Pinto, Pedro;Thorne, Heather;Niedermayr, Eveline;Foretova, Lenka;Machackova, Eva;Zikan, Michal;Pohlreich, Petr;Kleibl, Zdenek;Dishon, Sara;Lejbkowicz, Flavio;Pinchev, Mila;Senter, Leigha;Sweet, Kevin;Craven, Caroline;O'Conor, Michelle;Borg, Ake;Olsson, Håkan;Jernström, Helena;Henriksson, Karin;Harbst, Katja;Soller, Maria;Kristoffersson, Ulf;Öfverholm, Anna;Nordling, Margareta;Karlsson, Per;Einbeigi, Zakaria;von Wachenfeldt, Anna;Liljegren, Annelie;Bustinza, Gisela Barbany;Rantala, Johanna;Ardnor, Christina Edwinsdotter;Emanuelsson, Monica;Ehrencrona, Hans;Pigg, Maritta Hellström;Stenmark Askmalm, Marie;Liedgren, Sigrun;Zvocec, Cecilia;Niu, Qun;Seldon, Joyce;Kwan, Lorna;Crawford, Beth;Loranger, Kate;Mak, Julie;Stewart, Nicola;Lee, Robin;Blanco, Amie;Conrad, Peggy;Chan, Salina;Pharoah, Paul D. P.;Gayther, Simon;Pye, Carole;Harrington, Patricia;Wozniak, Eva;Lindeman, Geoffrey;Harris, Marion;Delatycki, Martin;Sawyer, Sarah;Driessen, Rebecca;Thompson, Ella;Breast Cancer Family Registry, Null;Embrace, Null
2015
Abstract
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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/869557
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Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione. La simulazione si basa sui dati IRIS e sugli indicatori bibliometrici alla data indicata e non tiene conto di eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori. La simulazione può differire dall'esito di un’eventuale domanda ASN sia per errori di catalogazione e/o dati mancanti in IRIS, sia per la variabilità dei dati bibliometrici nel tempo. Si consideri che Anvur calcola i valori degli indicatori all'ultima data utile per la presentazione delle domande.
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