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1. Whole Gene Capture Analysis of 15 CRC Susceptibility Genes in Suspected Lynch Syndrome Patients.

Author

Anne M L Jansen, Marije A Geilenkirchen, Tom van Wezel, Shantie C Jagmohan-Changur, Dina Ruano, Heleen M van der Klift, Brendy E W M van den Akker, Jeroen F J Laros, Michiel van Galen, Anja Wagner, Tom G W Letteboer, Encarna B Gómez-García, Carli M J Tops, Hans F Vasen, Peter Devilee, Frederik J Hes, Hans Morreau, and Juul T Wijnen

Subjects
Medicine, Science
Abstract

BACKGROUND AND AIMS:Lynch Syndrome (LS) is caused by pathogenic germline variants in one of the mismatch repair (MMR) genes. However, up to 60% of MMR-deficient colorectal cancer cases are categorized as suspected Lynch Syndrome (sLS) because no pathogenic MMR germline variant can be identified, which leads to difficulties in clinical management. We therefore analyzed the genomic regions of 15 CRC susceptibility genes in leukocyte DNA of 34 unrelated sLS patients and 11 patients with MLH1 hypermethylated tumors with a clear family history. METHODS:Using targeted next-generation sequencing, we analyzed the entire non-repetitive genomic sequence, including intronic and regulatory sequences, of 15 CRC susceptibility genes. In addition, tumor DNA from 28 sLS patients was analyzed for somatic MMR variants. RESULTS:Of 1979 germline variants found in the leukocyte DNA of 34 sLS patients, one was a pathogenic variant (MLH1 c.1667+1delG). Leukocyte DNA of 11 patients with MLH1 hypermethylated tumors was negative for pathogenic germline variants in the tested CRC susceptibility genes and for germline MLH1 hypermethylation. Somatic DNA analysis of 28 sLS tumors identified eight (29%) cases with two pathogenic somatic variants, one with a VUS predicted to pathogenic and LOH, and nine cases (32%) with one pathogenic somatic variant (n = 8) or one VUS predicted to be pathogenic (n = 1). CONCLUSIONS:This is the first study in sLS patients to include the entire genomic sequence of CRC susceptibility genes. An underlying somatic or germline MMR gene defect was identified in ten of 34 sLS patients (29%). In the remaining sLS patients, the underlying genetic defect explaining the MMRdeficiency in their tumors might be found outside the genomic regions harboring the MMR and other known CRC susceptibility genes.

Published
2016
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2. Assessing associations between the AURKA-HMMR-TPX2-TUBG1 functional module and breast cancer risk in BRCA1/2 mutation carriers.

Author

Ignacio Blanco, Karoline Kuchenbaecker, Daniel Cuadras, Xianshu Wang, Daniel Barrowdale, Gorka Ruiz de Garibay, Pablo Librado, Alejandro Sánchez-Gracia, Julio Rozas, Núria Bonifaci, Lesley McGuffog, Vernon S Pankratz, Abul Islam, Francesca Mateo, Antoni Berenguer, Anna Petit, Isabel Català, Joan Brunet, Lidia Feliubadaló, Eva Tornero, Javier Benítez, Ana Osorio, Teresa Ramón y Cajal, Heli Nevanlinna, Kristiina Aittomäki, Banu K Arun, Amanda E Toland, Beth Y Karlan, Christine Walsh, Jenny Lester, Mark H Greene, Phuong L Mai, Robert L Nussbaum, Irene L Andrulis, Susan M Domchek, Katherine L Nathanson, Timothy R Rebbeck, Rosa B Barkardottir, Anna Jakubowska, Jan Lubinski, Katarzyna Durda, Katarzyna Jaworska-Bieniek, Kathleen Claes, Tom Van Maerken, Orland Díez, Thomas V Hansen, Lars Jønson, Anne-Marie Gerdes, Bent Ejlertsen, Miguel de la Hoya, Trinidad Caldés, Alison M Dunning, Clare Oliver, Elena Fineberg, Margaret Cook, Susan Peock, Emma McCann, Alex Murray, Chris Jacobs, Gabriella Pichert, Fiona Lalloo, Carol Chu, Huw Dorkins, Joan Paterson, Kai-Ren Ong, Manuel R Teixeira, Teixeira, Frans B L Hogervorst, Annemarie H van der Hout, Caroline Seynaeve, Rob B van der Luijt, Marjolijn J L Ligtenberg, Peter Devilee, Juul T Wijnen, Matti A Rookus, Hanne E J Meijers-Heijboer, Marinus J Blok, Ans M W van den Ouweland, Cora M Aalfs, Gustavo C Rodriguez, Kelly-Anne A Phillips, Marion Piedmonte, Stacy R Nerenstone, Victoria L Bae-Jump, David M O'Malley, Elena S Ratner, Rita K Schmutzler, Barbara Wappenschmidt, Kerstin Rhiem, Christoph Engel, Alfons Meindl, Nina Ditsch, Norbert Arnold, Hansjoerg J Plendl, Dieter Niederacher, Christian Sutter, Shan Wang-Gohrke, Doris Steinemann, Sabine Preisler-Adams, Karin Kast, Raymonda Varon-Mateeva, Andrea Gehrig, Anders Bojesen, Inge Sokilde Pedersen, Lone Sunde, Uffe Birk Jensen, Mads Thomassen, Torben A Kruse, Lenka Foretova, Paolo Peterlongo, Loris Bernard, Bernard Peissel, Giulietta Scuvera, Siranoush Manoukian, Paolo Radice, Laura Ottini, Marco Montagna, Simona Agata, Christine Maugard, Jacques Simard, Penny Soucy, Andreas Berger, Anneliese Fink-Retter, Christian F Singer, Christine Rappaport, Daphne Geschwantler-Kaulich, Muy-Kheng Tea, Georg Pfeiler, BCFR, Esther M John, Alex Miron, Susan L Neuhausen, Mary Beth Terry, Wendy K Chung, Mary B Daly, David E Goldgar, Ramunas Janavicius, Cecilia M Dorfling, Elisabeth J van Rensburg, Florentia Fostira, Irene Konstantopoulou, Judy Garber, Andrew K Godwin, Edith Olah, Steven A Narod, Gad Rennert, Shani Shimon Paluch, Yael Laitman, Eitan Friedman, SWE-BRCA, Annelie Liljegren, Johanna Rantala, Marie Stenmark-Askmalm, Niklas Loman, Evgeny N Imyanitov, Ute Hamann, kConFab Investigators, Amanda B Spurdle, Sue Healey, Jeffrey N Weitzel, Josef Herzog, David Margileth, Chiara Gorrini, Manel Esteller, Antonio Gómez, Sergi Sayols, Enrique Vidal, Holger Heyn, GEMO, Dominique Stoppa-Lyonnet, Melanie Léoné, Laure Barjhoux, Marion Fassy-Colcombet, Antoine de Pauw, Christine Lasset, Sandra Fert Ferrer, Laurent Castera, Pascaline Berthet, François Cornelis, Yves-Jean Bignon, Francesca Damiola, Sylvie Mazoyer, Olga M Sinilnikova, Christopher A Maxwell, Joseph Vijai, Mark Robson, Noah Kauff, Marina J Corines, Danylko Villano, Julie Cunningham, Adam Lee, Noralane Lindor, Conxi Lázaro, Douglas F Easton, Kenneth Offit, Georgia Chenevix-Trench, Fergus J Couch, Antonis C Antoniou, and Miguel Angel Pujana

Subjects
Medicine, Science
Abstract

While interplay between BRCA1 and AURKA-RHAMM-TPX2-TUBG1 regulates mammary epithelial polarization, common genetic variation in HMMR (gene product RHAMM) may be associated with risk of breast cancer in BRCA1 mutation carriers. Following on these observations, we further assessed the link between the AURKA-HMMR-TPX2-TUBG1 functional module and risk of breast cancer in BRCA1 or BRCA2 mutation carriers. Forty-one single nucleotide polymorphisms (SNPs) were genotyped in 15,252 BRCA1 and 8,211 BRCA2 mutation carriers and subsequently analyzed using a retrospective likelihood approach. The association of HMMR rs299290 with breast cancer risk in BRCA1 mutation carriers was confirmed: per-allele hazard ratio (HR) = 1.10, 95% confidence interval (CI) 1.04-1.15, p = 1.9 x 10(-4) (false discovery rate (FDR)-adjusted p = 0.043). Variation in CSTF1, located next to AURKA, was also found to be associated with breast cancer risk in BRCA2 mutation carriers: rs2426618 per-allele HR = 1.10, 95% CI 1.03-1.16, p = 0.005 (FDR-adjusted p = 0.045). Assessment of pairwise interactions provided suggestions (FDR-adjusted pinteraction values > 0.05) for deviations from the multiplicative model for rs299290 and CSTF1 rs6064391, and rs299290 and TUBG1 rs11649877 in both BRCA1 and BRCA2 mutation carriers. Following these suggestions, the expression of HMMR and AURKA or TUBG1 in sporadic breast tumors was found to potentially interact, influencing patients' survival. Together, the results of this study support the hypothesis of a causative link between altered function of AURKA-HMMR-TPX2-TUBG1 and breast carcinogenesis in BRCA1/2 mutation carriers.

Published
2015
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3. Exome sequencing of germline DNA from non-BRCA1/2 familial breast cancer cases selected on the basis of aCGH tumor profiling.

Author

Florentine S Hilbers, Caro M Meijers, Jeroen F J Laros, Michiel van Galen, Nicoline Hoogerbrugge, Hans F A Vasen, Petra M Nederlof, Juul T Wijnen, Christi J van Asperen, and Peter Devilee

Subjects
Medicine, Science
Abstract

The bulk of familial breast cancer risk (∼70%) cannot be explained by mutations in the known predisposition genes, primarily BRCA1 and BRCA2. Underlying genetic heterogeneity in these cases is the probable explanation for the failure of all attempts to identify further high-risk alleles. While exome sequencing of non-BRCA1/2 breast cancer cases is a promising strategy to detect new high-risk genes, rational approaches to the rigorous pre-selection of cases are needed to reduce heterogeneity. We selected six families in which the tumours of multiple cases showed a specific genomic profile on array comparative genomic hybridization (aCGH). Linkage analysis in these families revealed a region on chromosome 4 with a LOD score of 2.49 under homogeneity. We then analysed the germline DNA of two patients from each family using exome sequencing. Initially focusing on the linkage region, no potentially pathogenic variants could be identified in more than one family. Variants outside the linkage region were then analysed, and we detected multiple possibly pathogenic variants in genes that encode DNA integrity maintenance proteins. However, further analysis led to the rejection of all variants due to poor co-segregation or a relatively high allele frequency in a control population. We concluded that using CGH results to focus on a sub-set of families for sequencing analysis did not enable us to identify a common genetic change responsible for the aggregation of breast cancer in these families. Our data also support the emerging view that non-BRCA1/2 hereditary breast cancer families have a very heterogeneous genetic basis.

Published
2013
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4. Breast cancer risk and 6q22.33: combined results from Breast Cancer Association Consortium and Consortium of Investigators on Modifiers of BRCA1/2.

Author

Tomas Kirchhoff, Mia M Gaudet, Antonis C Antoniou, Lesley McGuffog, Manjeet K Humphreys, Alison M Dunning, Stig E Bojesen, Børge G Nordestgaard, Henrik Flyger, Daehee Kang, Keun-Young Yoo, Dong-Young Noh, Sei-Hyun Ahn, Thilo Dork, Peter Schürmann, Johann H Karstens, Peter Hillemanns, Fergus J Couch, Janet Olson, Celine Vachon, Xianshu Wang, Angela Cox, Ian Brock, Graeme Elliott, Malcolm W R Reed, Barbara Burwinkel, Alfons Meindl, Hiltrud Brauch, Ute Hamann, Yon-Dschun Ko, GENICA Network, Annegien Broeks, Marjanka K Schmidt, Laura J Van 't Veer, Linde M Braaf, Nichola Johnson, Olivia Fletcher, Lorna Gibson, Julian Peto, Clare Turnbull, Sheila Seal, Anthony Renwick, Nazneen Rahman, Pei-Ei Wu, Jyh-Cherng Yu, Chia-Ni Hsiung, Chen-Yang Shen, Melissa C Southey, John L Hopper, Fleur Hammet, Thijs Van Dorpe, Anne-Sophie Dieudonne, Sigrid Hatse, Diether Lambrechts, Irene L Andrulis, Natalia Bogdanova, Natalia Antonenkova, Juri I Rogov, Daria Prokofieva, Marina Bermisheva, Elza Khusnutdinova, Christi J van Asperen, Robert A E M Tollenaar, Maartje J Hooning, Peter Devilee, Sara Margolin, Annika Lindblom, Roger L Milne, José Ignacio Arias, M Pilar Zamora, Javier Benítez, Gianluca Severi, Laura Baglietto, Graham G Giles, kConFab, AOCS Study Group, Amanda B Spurdle, Jonathan Beesley, Xiaoqing Chen, Helene Holland, Sue Healey, Shan Wang-Gohrke, Jenny Chang-Claude, Arto Mannermaa, Veli-Matti Kosma, Jaana Kauppinen, Vesa Kataja, Bjarni A Agnarsson, Maria A Caligo, Andrew K Godwin, Heli Nevanlinna, Tuomas Heikkinen, Zachary Fredericksen, Noralane Lindor, Katherine L Nathanson, Susan M Domchek, SWE-BRCA, Niklas Loman, Per Karlsson, Marie Stenmark Askmalm, Beatrice Melin, Anna von Wachenfeldt, HEBON, Frans B L Hogervorst, Martijn Verheus, Matti A Rookus, Caroline Seynaeve, Rogier A Oldenburg, Marjolijn J Ligtenberg, Margreet G E M Ausems, Cora M Aalfs, Hans J P Gille, Juul T Wijnen, Encarna B Gómez García, EMBRACE, Susan Peock, Margaret Cook, Clare T Oliver, Debra Frost, Craig Luccarini, Gabriella Pichert, Rosemarie Davidson, Carol Chu, Diana Eccles, Kai-Ren Ong, Jackie Cook, Fiona Douglas, Shirley Hodgson, D Gareth Evans, Rosalind Eeles, Bert Gold, Paul D P Pharoah, Kenneth Offit, Georgia Chenevix-Trench, Douglas F Easton, and BCAC/CIMBA

Subjects
Medicine, Science
Abstract

Recently, a locus on chromosome 6q22.33 (rs2180341) was reported to be associated with increased breast cancer risk in the Ashkenazi Jewish (AJ) population, and this association was also observed in populations of non-AJ European ancestry. In the present study, we performed a large replication analysis of rs2180341 using data from 31,428 invasive breast cancer cases and 34,700 controls collected from 25 studies in the Breast Cancer Association Consortium (BCAC). In addition, we evaluated whether rs2180341 modifies breast cancer risk in 3,361 BRCA1 and 2,020 BRCA2 carriers from 11 centers in the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA). Based on the BCAC data from women of European ancestry, we found evidence for a weak association with breast cancer risk for rs2180341 (per-allele odds ratio (OR) = 1.03, 95% CI 1.00-1.06, p = 0.023). There was evidence for heterogeneity in the ORs among studies (I(2) = 49.3%; p =

Published
2012
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5. Exome Sequencing of Germline DNA from Non-BRCA1/2 Familial Breast Cancer Cases Selected on the Basis of aCGH Tumor Profiling

Author

Jeroen F. J. Laros, Nicoline Hoogerbrugge, Petra M. Nederlof, Hans F. A. Vasen, Peter Devilee, Michiel van Galen, Juul T. Wijnen, Christi J. van Asperen, Caro M. Meijers, and Florentine Hilbers

Subjects
Heredity, Genetic Linkage, Genes, BRCA2, Genes, BRCA1, Pathology, Exome, Genome Sequencing, Exome sequencing, Genetics, Comparative Genomic Hybridization, Multidisciplinary, Cancer Risk Factors, Linkage (Genetics), Obstetrics and Gynecology, Genomics, Pedigree, Phenotypes, Oncology, Medicine, Female, Chromosomes, Human, Pair 4, Research Article, Science, Hereditary cancer and cancer-related syndromes Genetics and epigenetic pathways of disease [ONCOL 1], Genotypes, Genetic Causes of Cancer, Breast Neoplasms, Biology, Open Reading Frames, Germline mutation, Breast cancer, Genetic linkage, Diagnostic Medicine, Breast Cancer, medicine, Cancer Genetics, Humans, Family, Allele frequency, Germ-Line Mutation, Hereditary cancer and cancer-related syndromes [ONCOL 1], Genetic heterogeneity, Sequence Analysis, DNA, Comparative Genomics, medicine.disease, Lod Score, Comparative genomic hybridization
Abstract

Contains fulltext : 118406.pdf (Publisher’s version ) (Open Access) The bulk of familial breast cancer risk ( approximately 70%) cannot be explained by mutations in the known predisposition genes, primarily BRCA1 and BRCA2. Underlying genetic heterogeneity in these cases is the probable explanation for the failure of all attempts to identify further high-risk alleles. While exome sequencing of non-BRCA1/2 breast cancer cases is a promising strategy to detect new high-risk genes, rational approaches to the rigorous pre-selection of cases are needed to reduce heterogeneity. We selected six families in which the tumours of multiple cases showed a specific genomic profile on array comparative genomic hybridization (aCGH). Linkage analysis in these families revealed a region on chromosome 4 with a LOD score of 2.49 under homogeneity. We then analysed the germline DNA of two patients from each family using exome sequencing. Initially focusing on the linkage region, no potentially pathogenic variants could be identified in more than one family. Variants outside the linkage region were then analysed, and we detected multiple possibly pathogenic variants in genes that encode DNA integrity maintenance proteins. However, further analysis led to the rejection of all variants due to poor co-segregation or a relatively high allele frequency in a control population. We concluded that using CGH results to focus on a sub-set of families for sequencing analysis did not enable us to identify a common genetic change responsible for the aggregation of breast cancer in these families. Our data also support the emerging view that non-BRCA1/2 hereditary breast cancer families have a very heterogeneous genetic basis.

Published
2013

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