Two truncating variants in FANCC and breast cancer risk.

Dörk-Bousset, Thilo GND; Peterlongo, Paolo ORCID; Mannermaa, Arto; Bolla, Manjeet K; Wang, Qin; Dennis, Joe; Ahearn, Thomas; Andrulis, Irene L ORCID; Anton-Culver, Hoda; Arndt, Volker ORCID; Aronson, Kristan J; Augustinsson, Annelie; Freeman, Laura E Beane; Beckmann, Matthias W; Beeghly-Fadiel, Alicia; Behrens, Sabine; Bermisheva, Marina; Blomqvist, Carl; Bogdanova, Natalia V; Bojesen, Stig E; Brauch, Hiltrud ORCID; Brenner, Hermann; Burwinkel, Barbara; Canzian, Federico; Chan, Tsun L; Chang-Claude, Jenny; Chanock, Stephen J; Choi, Ji-Yeob; Christiansen, Hans; Clarke, Christine L; Couch, Fergus J; Czene, Kamila; Daly, Mary B; Dos-Santos-Silva, Isabel; Dwek, Miriam ORCID; Eccles, Diana M; Ekici, Arif B ORCID; Eriksson, Mikael; Evans, D Gareth; Fasching, Peter A ORCID; Figueroa, Jonine ORCID; Flyger, Henrik; Fritschi, Lin; Gabrielson, Marike; Gago-Dominguez, Manuela; Gao, Chi; Gapstur, Susan M; García-Closas, Montserrat; García-Sáenz, José A; Gaudet, Mia M; Giles, Graham G; Goldberg, Mark S; Goldgar, David E; Guénel, Pascal ORCID; Haeberle, Lothar; Haiman, Christopher A; Håkansson, Niclas; Hall, Per; Hamann, Ute; Hartman, Mikael; Hauke, Jan; Hein, Alexander ORCID; Hillemanns, Peter; Hogervorst, Frans B L; Hooning, Maartje J; Hopper, John L; Howell, Tony; Huo, Dezheng; Ito, Hidemi ORCID; Iwasaki, Motoki; Jakubowska, Anna ORCID; Janni, Wolfgang; John, Esther M; Jung, Audrey; Kaaks, Rudolf; Kang, Daehee; Kapoor, Pooja Middha; Khusnutdinova, Elza; Kim, Sung-Won; Kitahara, Cari M; Koutros, Stella; Kraft, Peter ORCID; Kristensen, Vessela N; Kwong, Ava; Lambrechts, Diether; Marchand, Loic Le; Li, Jingmei; Lindström, Sara; Linet, Martha; Lo, Wing-Yee; Long, Jirong; Lophatananon, Artitaya; Lubiński, Jan; Manoochehri, Mehdi; Manoukian, Siranoush; Margolin, Sara; Martinez, Elena; Matsuo, Keitaro ORCID; Mavroudis, Dimitris; Meindl, Alfons; Menon, Usha ORCID; Milne, Roger L ORCID; Mohd Taib, Nur Aishah; Muir, Kenneth ORCID; Mulligan, Anna Marie; Neuhausen, Susan L; Nevanlinna, Heli ORCID; Neven, Patrick; Newman, William G ORCID; Offit, Kenneth; Olopade, Olufunmilayo I; Olshan, Andrew F; Olson, Janet E; Olsson, Håkan ORCID; Park, Sue K; Park-Simon, Tjoung-Won; Peto, Julian ORCID; Plaseska-Karanfilska, Dijana; Pohl-Rescigno, Esther; Presneau, Nadege; Rack, Brigitte; Radice, Paolo ORCID; Rashid, Muhammad U; Rennert, Gad ORCID; Rennert, Hedy S; Romero, Atocha ORCID; Ruebner, Matthias; Saloustros, Emmanouil; Schmidt, Marjanka K ORCID; Schmutzler, Rita K; Schneider, Michael O; Schoemaker, Minouk J; Scott, Christopher ORCID; Shen, Chen-Yang; Shu, Xiao-Ou; Simard, Jacques; Slager, Susan; Smichkoska, Snezhana; Southey, Melissa C; Spinelli, John J; Stone, Jennifer ORCID; Surowy, Harald; Swerdlow, Anthony J; Tamimi, Rulla M; Tapper, William J; Teo, Soo H; Terry, Mary Beth; Toland, Amanda E; Tollenaar, Rob A E M; Torres, Diana; Torres-Mejía, Gabriela; Troester, Melissa A; Truong, Thérèse ORCID; Tsugane, Shoichiro ORCID; Untch, Michael; Vachon, Celine M; Ouweland, Ans M W van den; Veen, Elke M van; Vijai, Joseph; Wendt, Camilla; Wolk, Alicja; Yu, Jyh-Cherng; Zheng, Wei; Ziogas, Argyrios ORCID; Ziv, Elad; Dunning, Alison M ORCID; Pharoah, Paul D P ORCID; Schindler, Detlev; Devilee, Peter ORCID; Easton, Douglas F ORCID

Fanconi anemia (FA) is a genetically heterogeneous disorder with 22 disease-causing genes reported to date. In some FA genes, monoallelic mutations have been found to be associated with breast cancer risk, while the risk associations of others remain unknown. The gene for FA type C, FANCC, has been proposed as a breast cancer susceptibility gene based on epidemiological and sequencing studies. We used the Oncoarray project to genotype two truncating FANCC variants (p.R185X and p.R548X) in 64,760 breast cancer cases and 49,793 controls of European descent. FANCC mutations were observed in 25 cases (14 with p.R185X, 11 with p.R548X) and 26 controls (18 with p.R185X, 8 with p.R548X). There was no evidence of an association with the risk of breast cancer, neither overall (odds ratio 0.77, 95%CI 0.44-1.33, p = 0.4) nor by histology, hormone receptor status, age or family history. We conclude that the breast cancer risk association of these two FANCC variants, if any, is much smaller than for BRCA1, BRCA2 or PALB2 mutations. If this applies to all truncating variants in FANCC it would suggest there are differences between FA genes in their roles on breast cancer risk and demonstrates the merit of large consortia for clarifying risk associations of rare variants.


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Dörk, Thilo / Peterlongo, Paolo / Mannermaa, Arto / et al: Two truncating variants in FANCC and breast cancer risk.. 2019.

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