Targeted Sequencing of the Mitochondrial Genome of Women at High Risk of Breast Cancer without Detectable Mutations in BRCA1/2

Autor: Blein, Sophie, Barjhoux, Laure, Damiola, Francesca, Dondon, Marie-Gabrielle, Eon-Marchais, Séverine, Marcou, Morgane, Caron, Olivier, Lortholary, Alain, Buecher, Bruno, Vennin, Philippe, Berthet, Pascaline, Noguès, Catherine, Lasset, Christine, Gauthier-Villars, Marion, Mazoyer, Sylvie, Stoppa-Lyonnet, Dominique, Andrieu, Nadine, Thomas, Gilles, Sinilnikova, Olga, Cox, David
Přispěvatelé: Centre de Recherche en Cancérologie de Lyon (UNICANCER/CRCL), Centre Léon Bérard [Lyon]-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Génétique Constitutionnelle des Cancers Fréquents, Centre Léon Bérard [Lyon]-Hospices Civils de Lyon (HCL), Cancer et génome: Bioinformatique, biostatistiques et épidémiologie d'un système complexe, MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut Curie [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), Onco-génétique, Département de médecine oncologique [Gustave Roussy], Institut Gustave Roussy (IGR)-Institut Gustave Roussy (IGR), Centre Catherine-de-Sienne [Nantes] (CCS), Institut Curie [Paris], Centre Régional de Lutte contre le Cancer Oscar Lambret [Lille] (UNICANCER/Lille), Université Lille Nord de France (COMUE)-UNICANCER, Consultation d'Oncogénétique, Centre Régional de Lutte contre le Cancer François Baclesse [Caen] (UNICANCER/CRLC), UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU)-UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU), UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU), CRLCC René Huguenin, Centre Léon Bérard [Lyon], Service de Génétique Oncologique, Unité de génétique et biologie des cancers (U830), Université Paris Descartes - Paris 5 (UPD5)-Institut Curie [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Lyon, Ligue Nationale contre le Cancer (3 grants: PRE05/DSL, PRE07/DSL, PRE11/NA), Inca Grant INCa-DGOS-4654), GENESIS: study design and data collection., Mines Paris - PSL (École nationale supérieure des mines de Paris), Université de Lille-UNICANCER, Normandie Université (NU)-UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU)-UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN), Normandie Université (NU)-UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN), Lissalde, Claire
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: PLoS ONE
PLoS ONE, Public Library of Science, 2015, 10 (9), pp.e0136192. ⟨10.1371/journal.pone.0136192⟩
PLoS ONE, 2015, 10 (9), pp.e0136192. ⟨10.1371/journal.pone.0136192⟩
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0136192⟩
Popis: Breast Cancer is a complex multifactorial disease for which high-penetrance mutations have been identified. Approaches used to date have identified genomic features explaining about 50% of breast cancer heritability. A number of low- to medium penetrance alleles (per-allele odds ratio < 1.5 and 4.0, respectively) have been identified, suggesting that the remaining heritability is likely to be explained by the cumulative effect of such alleles and/or by rare high-penetrance alleles. Relatively few studies have specifically explored the mitochondrial genome for variants potentially implicated in breast cancer risk. For these reasons, we propose an exploration of the variability of the mitochondrial genome in individuals diagnosed with breast cancer, having a positive breast cancer family history but testing negative for BRCA1/2 pathogenic mutations. We sequenced the mitochondrial genome of 436 index breast cancer cases from the GENESIS study. As expected, no pathogenic genomic pattern common to the 436 women included in our study was observed. The mitochondrial genes MT-ATP6 and MT-CYB were observed to carry the highest number of variants in the study. The proteins encoded by these genes are involved in the structure of the mitochondrial respiration chain, and variants in these genes may impact reactive oxygen species production contributing to carcinogenesis. More functional and epidemiological studies are needed to further investigate to what extent variants identified may influence familial breast cancer risk.
Databáze: OpenAIRE
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