BRCA2 Polymorphic Stop Codon K3326X and the Risk of Breast, Prostate, and Ovarian Cancers.

Authors:
Dr. Jonine Figueroa, PhD
Dr. Jonine Figueroa, PhD
Usher Institute of Population Health Sciences and Informatics
Chancellor's Fellow
Molecular epidemiology
Edinburgh, Scotland | United Kingdom
Huong D Meeks Honglin Song Kyriaki Michailidou Manjeet K Bolla Joe Dennis Qin Wang Daniel Barrowdale Debra Frost Lesley McGuffog Steve Ellis Bingjian Feng Saundra S Buys John L Hopper Melissa C Southey Andrea Tesoriero Paul A James Fiona Bruinsma Ian G Campbell Annegien Broeks Marjanka K Schmidt Frans B L Hogervorst Matthias W Beckman Peter A Fasching Olivia Fletcher Nichola Johnson Elinor J Sawyer Elio Riboli Susana Banerjee Usha Menon Ian Tomlinson Barbara Burwinkel Ute Hamann Frederik Marme Anja Rudolph Ramunas Janavicius Laima Tihomirova Nadine Tung Judy Garber Daniel Cramer Kathryn L Terry Elizabeth M Poole Shelley S Tworoger Cecilia M Dorfling Elizabeth J van Rensburg Andrew K Godwin Pascal Guénel Thérèse Truong Dominique Stoppa-Lyonnet Francesca Damiola Sylvie Mazoyer Olga M Sinilnikova Claudine Isaacs Christine Maugard Stig E Bojesen Henrik Flyger Anne-Marie Gerdes Thomas V O Hansen Allen Jensen Susanne K Kjaer Claus Hogdall Estrid Hogdall Inge Sokilde Pedersen Mads Thomassen Javier Benitez Anna González-Neira Ana Osorio Miguel de la Hoya Pedro Perez Segura Orland Diez Conxi Lazaro Joan Brunet Hoda Anton-Culver Lee Eunjung Esther M John Susan L Neuhausen Yuan Chun Ding Danielle Castillo Jeffrey N Weitzel Patricia A Ganz Robert L Nussbaum Salina B Chan Beth Y Karlan Jenny Lester Anna Wu Simon Gayther Susan J Ramus Weiva Sieh Alice S Whittermore Alvaro N A Monteiro Catherine M Phelan Mary Beth Terry Marion Piedmonte Kenneth Offit Mark Robson Douglas Levine Kirsten B Moysich Rikki Cannioto Sara H Olson Mary B Daly Katherine L Nathanson Susan M Domchek Karen H Lu Dong Liang Michelle A T Hildebrant Roberta Ness Francesmary Modugno Leigh Pearce Marc T Goodman Pamela J Thompson Hermann Brenner Katja Butterbach Alfons Meindl Eric Hahnen Barbara Wappenschmidt Hiltrud Brauch Thomas Brüning Carl Blomqvist Sofia Khan Heli Nevanlinna Liisa M Pelttari Kristiina Aittomäki Ralf Butzow Natalia V Bogdanova Thilo Dörk Annika Lindblom Sara Margolin Johanna Rantala Veli-Matti Kosma Arto Mannermaa Diether Lambrechts Patrick Neven Kathleen B M Claes Tom Van Maerken Jenny Chang-Claude Dieter Flesch-Janys Florian Heitz Raymonda Varon-Mateeva Paolo Peterlongo Paolo Radice Alessandra Viel Monica Barile Bernard Peissel Siranoush Manoukian Marco Montagna Cristina Oliani Ana Peixoto Manuel R Teixeira Anita Collavoli Emily Hallberg Janet E Olson Ellen L Goode Steven N Hart Hermela Shimelis Julie M Cunningham Graham G Giles Roger L Milne Sue Healey Kathy Tucker Christopher A Haiman Brian E Henderson Mark S Goldberg Marc Tischkowitz Jacques Simard Penny Soucy Diana M Eccles Nhu Le Anne-Lise Borresen-Dale Vessela Kristensen Helga B Salvesen Line Bjorge Elisa V Bandera Harvey Risch Wei Zheng Alicia Beeghly-Fadiel Hui Cai Katri Pylkäs Robert A E M Tollenaar Ans M W van der Ouweland Irene L Andrulis Julia A Knight Steven Narod Peter Devilee Robert Winqvist Mark H Greene Phuong L Mai Jennifer T Loud Montserrat García-Closas Minouk J Schoemaker Kamila Czene Hatef Darabi Iain McNeish Nadeem Siddiquil Rosalind Glasspool Ava Kwong Sue K Park Soo Hwang Teo Sook-Yee Yoon Keitaro Matsuo Satoyo Hosono Yin Ling Woo Yu-Tang Gao Lenka Foretova Christian F Singer Christine Rappaport-Feurhauser Eitan Friedman Yael Laitman Gad Rennert Evgeny N Imyanitov Peter J Hulick Olufunmilayo I Olopade Leigha Senter Edith Olah Jennifer A Doherty Joellen Schildkraut Linetta B Koppert Lambertus A Kiemeney Leon F A G Massuger Linda S Cook Tanja Pejovic Jingmei Li Ake Borg Anna Öfverholm Mary Anne Rossing Nicolas Wentzensen Karin Henriksson Angela Cox Simon S Cross Barbara J Pasini Mitul Shah Maria Kabisch Diana Torres Anna Jakubowska Jan Lubinski Jacek Gronwald Bjarni A Agnarsson Jolanta Kupryjanczyk Joanna Moes-Sosnowska Florentia Fostira Irene Konstantopoulou Susan Slager Michael Jones Antonis C Antoniou Andrew Berchuck Anthony Swerdlow Georgia Chenevix-Trench Alison M Dunning Paul D P Pharoah Per Hall Douglas F Easton Fergus J Couch Amanda B Spurdle David E Goldgar

J Natl Cancer Inst 2016 Feb 19;108(2). Epub 2015 Nov 19.

Background: The K3326X variant in BRCA2 (BRCA2*c.9976A>T; p.Lys3326*; rs11571833) has been found to be associated with small increased risks of breast cancer. However, it is not clear to what extent linkage disequilibrium with fully pathogenic mutations might account for this association. There is scant information about the effect of K3326X in other hormone-related cancers.

Methods: Using weighted logistic regression, we analyzed data from the large iCOGS study including 76 637 cancer case patients and 83 796 control patients to estimate odds ratios (ORw) and 95% confidence intervals (CIs) for K3326X variant carriers in relation to breast, ovarian, and prostate cancer risks, with weights defined as probability of not having a pathogenic BRCA2 variant. Using Cox proportional hazards modeling, we also examined the associations of K3326X with breast and ovarian cancer risks among 7183 BRCA1 variant carriers. All statistical tests were two-sided.

Results: The K3326X variant was associated with breast (ORw = 1.28, 95% CI = 1.17 to 1.40, P = 5.9x10(-) (6)) and invasive ovarian cancer (ORw = 1.26, 95% CI = 1.10 to 1.43, P = 3.8x10(-3)). These associations were stronger for serous ovarian cancer and for estrogen receptor-negative breast cancer (ORw = 1.46, 95% CI = 1.2 to 1.70, P = 3.4x10(-5) and ORw = 1.50, 95% CI = 1.28 to 1.76, P = 4.1x10(-5), respectively). For BRCA1 mutation carriers, there was a statistically significant inverse association of the K3326X variant with risk of ovarian cancer (HR = 0.43, 95% CI = 0.22 to 0.84, P = .013) but no association with breast cancer. No association with prostate cancer was observed.

Conclusions: Our study provides evidence that the K3326X variant is associated with risk of developing breast and ovarian cancers independent of other pathogenic variants in BRCA2. Further studies are needed to determine the biological mechanism of action responsible for these associations.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4907358PMC

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February 2016
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