Search

Your search keyword '"Dugast, C"' showing total 5 results
Start Over Author "Dugast, C" Topic brca2 protein
5 results on '"Dugast, C"'

1. Mutation screening of MIR146A/B and BRCA1/2 3'-UTRs in the GENESIS study.

Author

Garcia AI, Buisson M, Damiola F, Tessereau C, Barjhoux L, Verny-Pierre C, Sornin V, Dondon MG, Eon-Marchais S, Caron O, Gautier-Villars M, Coupier I, Buecher B, Vennin P, Belotti M, Lortholary A, Gesta P, Dugast C, Noguès C, Fricker JP, Faivre L, Stoppa-Lyonnet D, Andrieu N, Sinilnikova OM, and Mazoyer S

Subjects
Adult, Aged, Case-Control Studies, Female, HeLa Cells, Humans, MCF-7 Cells, Middle Aged, 3' Untranslated Regions, BRCA1 Protein genetics, BRCA2 Protein genetics, Breast Neoplasms genetics, MicroRNAs genetics, Mutation
Abstract

Although a wide number of breast cancer susceptibility alleles associated with various levels of risk have been identified to date, about 50% of the heritability is still missing. Although the major BRCA1 and BRCA2 genes are being extensively screened for truncating and missense variants in breast and/or ovarian cancer families, potential regulatory variants affecting their expression remain largely unexplored. In an attempt to identify such variants, we focused our attention on gene regulation mediated by microRNAs (miRs). We screened two genes, MIR146A and MIR146B, producing miR-146a and miR-146b-5p, respectively, that regulate BRCA1, and the 3'- untranslated regions (3'-UTRs) of BRCA1 and BRCA2 in the GENESIS French national case/control study (BRCA1- and BRCA2-negative breast cancer cases with at least one sister with breast cancer and matched controls). We identified one rare variant in MIR146A, four in MIR146B, five in BRCA1 3'-UTR and one in BRCA2 3'-UTR in 716 index cases and 619 controls. Among these 11 rare variants, 7 were identified each in 1 index case. None of the three relevant MIR146A/MIR146B variants affected the pre-miR sequences. The potential causality of the four relevant BRCA1/BRCA2 3'-UTRs variants was evaluated with luciferase reporter assays and co-segregation studies, as well as with bioinformatics analyses to predict miRs-binding sites, RNA secondary structures and RNA accessibility. This is the first study to report the screening of miR genes and of BRCA2 3'-UTR in a large series of familial breast cancer cases. None of the variant identified in this study gave convincing evidence of potential pathogenicity.

Published
2016
Full Text
View/download PDF

2. Uptake of a randomized breast cancer prevention trial comparing letrozole to placebo in BRCA1/2 mutations carriers: the LIBER trial.

Author

Pujol P, Lasset C, Berthet P, Dugast C, Delaloge S, Fricker JP, Tennevet I, Chabbert-Buffet N, This P, Baudry K, Lemonnier J, Roca L, Mijonnet S, Gesta P, Chiesa J, Dreyfus H, Vennin P, Delnatte C, Bignon YJ, Lortholary A, Prieur F, Gladieff L, Lesur A, Clough KB, Nogues C, and Martin AL

Subjects
Adult, Aged, Double-Blind Method, Feasibility Studies, Female, Follow-Up Studies, Genetic Predisposition to Disease, Heterozygote, Humans, Letrozole, Middle Aged, Ovariectomy, Postmenopause drug effects, Postmenopause genetics, Prognosis, Prospective Studies, Retrospective Studies, Antineoplastic Agents therapeutic use, BRCA1 Protein genetics, BRCA2 Protein genetics, Breast Neoplasms drug therapy, Breast Neoplasms genetics, Mutation genetics, Nitriles therapeutic use, Triazoles therapeutic use
Abstract

Women with germline BRCA1 or BRCA2 (BRCA1/2) mutations are considered as an extreme risk population for developing breast cancer. Prophylactic mastectomy provides a valid option to reduce such risk, impacting however, the quality of life. Medical prevention by aromatase inhibitor that has also recently shown to have preventive effect may thus be considered as an alternative. LIBER is an ongoing double-blind, randomized phase III trial to evaluate the efficacy of 5-year letrozole versus placebo to decrease breast cancer incidence in post-menopausal BRCA1/2 mutation carriers (NCT00673335). We present data on the uptake of this trial. We compared characteristics of women in the LIBER trial (n = 113) to those of women enrolled in the prospective ongoing national GENEPSO cohort (n = 1,505). Uptake was evaluated through a survey sent to all active centres, with responses obtained from 17 to the 20 (85%) centres. According to the characteristics of the women enrolled in the GENEPSO cohort and the survey, approximately one-third of BRCA1/2 mutation carriers were eligible for the trial. Five hundred and thirty-four women eligible from chart review have been informed by mail about the prevention trial and were invited to an oral information by participating centres. Forty-four percentage of them came to the dedicated medical visit. Uptake of drug prevention trial was 32% among women informed orally and 15% of all the eligible women. The main reasons of refusal were: potential side effects, probability to receive the placebo and lack of support from their physicians. Additionally, we noticed that prior prophylactic oophorectomy and previous unilateral breast cancer were more frequent in women enrolled in the LIBER trial than in the French cohort (93% vs. 60% and 50% vs. 39%, respectively). Based on an overall 15% uptake among all eligible subjects, greater and wider information of the trial should be offered to women with BRCA1/2 mutation to improve recruitment. Women with previous unilateral breast cancer or prior prophylactic oophorectomy are more likely to enter a medical prevention trial.

Published
2012
Full Text
View/download PDF

3. [Problems raised by the gynaecologic management of women with BRCA 1 & 2 mutations].

Author

Cabaret AS, Levêque J, Dugast C, Blanchot J, and Grall JY

Subjects
Adolescent, Breast Neoplasms genetics, Breast Neoplasms prevention & control, Breast Neoplasms therapy, Female, Gene Deletion, Genetic Predisposition to Disease, Humans, Mastectomy, Ovarian Neoplasms genetics, Ovarian Neoplasms prevention & control, Ovarian Neoplasms therapy, Ovariectomy, Pedigree, Pregnancy, BRCA1 Protein genetics, BRCA2 Protein genetics, Mutation
Abstract

Breast and ovarian cancer occur more frequently in young women with BRCA 1 &2 mutations (respective cumulative risks from 37 to 85% and 10 to 20%), and raise specific gynaecologic problems as prophylactic surgery and hormonal treatments. Two medical files from 2 sisters with BRCA 1 mutation (exon 11) are presented and the authors discuss the therapeutic options chosen. BRCA 1 & 2 tumour suppressor genes seem to play a major role in the repair of cellular damages inducing by the estrogenic proliferative signal. The prophylactic mastectomy is effective for the breast cancer prevention but its acceptance is low. The oophorectomydecreases the ovarian risk (knowing the occurrence of peritoneal carcinomatosis in 1.8% of cases) and currently the breast cancer risk (RR = 0.47) by the hormonal privation: the hormone replacement therapy does not seem to increase the breast cancer risk in the small series published. The HRT is possible in women with BRCA mutation under medical supervision and if the doses of hormones are light. The first results concerning the chemoprevention by Tamoxifen are encouraging (RR = 0.38) in these patients, but more studies are needed. The oral contraception exerts an uncertain effect against ovarian cancer, but possibly enhances the breast cancer risk in this group of women (RR = 3.3). The management of women with BRCA mutation is varying according to their own priorities, which can change during their life.

Published
2003
Full Text
View/download PDF

4. Risk-reducing salpingo-oophorectomy, natural menopause, and breast cancer risk: an international prospective cohort of BRCA1 and BRCA2 mutation carriers

Author

Mavaddat, N., Antoniou, A.C., Mooij, T.M., Hooning, M.J., Heemskerk-Gerritsen, B.A., Nogues, C., Laborde, L., Breysse, E., Stoppa-Lyonnet, D., Gauthier-Villars, M., Buecher, B., Caron, O., Fourme-Mouret, E., Fricker, J.P., Lasset, C., Bonadona, V., Berthet, P., Faivre, L., Luporsi, E., Mari, V., Gladieff, L., Gesta, P., Sobol, H., Eisinger, F., Longy, M., Dugast, C., Colas, C., Coupier, I., Pujol, P., Corsini, C., Lortholary, A., Vennin, P., Adenis, C., Nguyen, T.D., Delnatte, C., Tinat, J., Tennevet, I., Limacher, J.M., Maugard, C., Bignon, Y.J., Demange, L., Penet, C., Dreyfus, H., Cohen-Haguenauer, O., Venat-Bouvet, L., Leroux, D., Zattara-Cannoni, H., Fert-Ferrer, S., Bera, O., Ellis, S., Barrowdale, D., Frost, D., Evans, D.G., Izatt, L., Adlard, J., Eeles, R., Brewer, C., Tischkowitz, M., Henderson, A., Cook, J., Eccles, D., Hogervorst, F.B.L., Collee, J.M., Asperen, C.J. van, Mensenkamp, A.R., Ausems, M.G.E.M., Meijers-Heijboer, H.E.J., Engelen, K. van, Blok, M.J., Oosterwijk, J.C., Verloop, J., Broek, E. van den, Mourits, M.J.E., Koppert, L.B., Hopper, J.L., John, E.M., Chung, W.K., Andrulis, I.L., Daly, M.B., Buys, S.S., Benitez, J., Caldes, T., Jakubowska, A., Simard, J., Singer, C.F., Tan, Y., Olah, E., Navratilova, M., Foretova, L., Gerdes, A.M., Roos-Blom, M.J., Leeuwen, F.E. van, Arver, B., Olsson, H., Schmutzler, R.K., Engel, C., Kast, K., Phillips, K.A., Terry, M.B., Milne, R.L., Goldgar, D.E., Rookus, M.A., Andrieu, N., Easton, D.F., GENEPSO, EMBRACE, HEBON, kConFab Investigators, IBCCS, kConFab, BCFR, University of Cambridge [UK] (CAM), Netherlands Cancer Institute (NKI), Antoni van Leeuwenhoek Hospital, Erasmus MC Cancer Institute, Rotterdam, Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC), Institut Curie [Paris], Institut Gustave Roussy (IGR), Département de médecine oncologique [Gustave Roussy], Centre Hospitalier Georges Renon [Niort] (CH Georges Renon Niort), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Centre Catherine-de-Sienne [Nantes] (CCS), Manchester University NHS Foundation Trust (MFT), Guy's & St Thomas' NHS Foundation Trust, Chapel Allerton Hospital, University of Leeds, Royal Marsden NHS Foundation Trust, Royal Devon & Exeter Hospital, Newcastle Upon Tyne Hospitals NHS Foundation Trust, Sheffield Children's NHS Foundation Trust, Wessex clinical genetics service, Vrije Universiteit Amsterdam [Amsterdam] (VU), University Medical Center Groningen [Groningen] (UMCG), Department of Medical Genetics, University Medical Center [Utrecht], Centre for MEGA Epidemiology, The University of Melbourne, Victoria, Australia, Department of Epidemiology, Cancer Prevention Institute of California, Columbia University [New York], Departments of Molecular Genetics and Laboratory Medicine and Pathobiology, University of Toronto-Cancer Care Ontario, Division of Population Science, Fox Chase Cancer Center, Department of Internal Medicine, Huntsman Cancer Institute, Departemento Genetica Humana, Centro Nacional Investigaciones Oncologicas, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos [Madrid, Spain] (IdISSC), Department of Genetics and Pathology, International Hereditary Cancer Centre-Pomeranian Medical University [Szczecin] (PUM), Cancer Genomics Laboratory, Centre Hospitalier Universitaire de Québec, Division of Special Gynecology, Medizinische Universität Wien = Medical University of Vienna-Department of OB/GYN, Medizinische Universität Wien = Medical University of Vienna, National Institute of Oncology, Masaryk Memorial Cancer Institute (MMCI), Masaryk University [Brno] (MUNI), Department of Clinical Genetics [Copenhagen], Rigshospitalet [Copenhagen], Copenhagen University Hospital-Copenhagen University Hospital, The Netherlands Cancer Institute [Amsterdam, The Netherlands], Radiumhemmet, Karolinska University Hospital [Stockholm], Department of Oncology, Lund University Hospital, Division of Molecular Gyneco-Oncology, Department of Gynaecology and Obstetrics, Clinical Center Un, Institute for Medical Informatics, Statistics and Epidemiology [Leipzig] (IMISE), Universität Leipzig [Leipzig], Department of Gynaecology and Obstetrics, University Hospital Carl Gustav Carus, Dept of Haematology and Medical Oncology, Peter MacCallum Cancer Center, Department of Epidemiology [Columbia University], Columbia University [New York]-Columbia Mailman School of Public Health, Cancer Epidemiology Centre, Cancer Council Victoria, International Agency for Cancer Research (IACR), Netherlands Cancer Institute, Cancer et génome: Bioinformatique, biostatistiques et épidémiologie d'un système complexe, Mines Paris - PSL (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), Université Paris sciences et lettres (PSL), Cancer Research U.K. Genetic Epidemiology Unit, Strangeways Research Laboratory, Andrieu, Nadine, Human genetics, Epidemiology and Data Science, Mavaddat, Nasim [0000-0003-0307-055X], Eeles, Ros [0000-0002-3698-6241], Engel, Christoph [0000-0002-7247-282X], Apollo - University of Cambridge Repository, Pomeranian Medical University-International Hereditary Cancer Centre, Masaryk Memorial Cancer Institute (RECAMO), Columbia Mailman School of Public Health-Columbia University [New York], Institut Curie [Paris]-MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM), Antoniou, Antonis [0000-0001-9223-3116], Tischkowitz, Marc [0000-0002-7880-0628], Easton, Douglas [0000-0003-2444-3247], Medical Oncology, Surgery, Cancer Research UK (Reino Unido), NIH - National Cancer Institute (NCI) (Estados Unidos), United States Department of Health and Human Services, Ministerio de Economía y Competitividad (España), Unión Europea. Comisión Europea. European Research Council (ERC), Norwegian EEA Financial Mechanism, Hungarian Scientific Research Fund (Hungría), Ministry of Education, Youth and Sports (República Checa), MH CZ -DRO (MMCI), National Health and Medical Research Council (Australia), Australian National Breast Cancer Foundation, Cancer Australia, ERA-NET TRANSAN JTC 2012 Cancer, Transcan grant, Biotechnology and Biological Sciences Research Council (Reino Unido), Pink Ribbons Project, Netherlands Organisation of Scientific Research, Dutch Cancer Society (Holanda), Instituto de Salud Carlos III, Deutsche Krebshilfe, National Institute for Health Research (Reino Unido), Unión Europea. Comisión Europea. 7 Programa Marco, Ministry of Economic Development, Innovation and Export Trade-grant, Canadian Institutes of Health Research, Cancer Research UK, NIH National Cancer Institute (NCI), United States Department of Health & Human Services National Institutes of Health (NIH) - USA, Ministerio de Economia y Competividad (MINECO), European Research Council (ERC), Hungarian Research Grants, MEYS -NPS I, National Health and Medical Research Council of Australia, BBMRI grant, Pink Ribbon grants, Netherlands Organisation of Scientific Research grant, KWF Kankerbestrijding, Instituto de Salud Carlos III - ISCIII, National Institute for Health Research (NIHR), European Union Seventh Framework Program (2007-2013), Canadian Institutes of Health Research (CIHR), Damage and Repair in Cancer Development and Cancer Treatment (DARE), Targeted Gynaecologic Oncology (TARGON), United States of Department of Health & Human Services, European Research Council, APH - Quality of Care, APH - Methodology, Graduate School, ARD - Amsterdam Reproduction and Development, RS: GROW - R4 - Reproductive and Perinatal Medicine, and MUMC+: DA KG Lab Centraal Lab (9)

Subjects
endocrine system diseases, SURGERY, [SDV]Life Sciences [q-bio], [SDV.GEN] Life Sciences [q-bio]/Genetics, Cohort Studies, 0302 clinical medicine, BRCA2 Mutation, Breast cancer, Surgical oncology, Prospective Studies, Prospective cohort study, skin and connective tissue diseases, Salpingo-oophorectomy/methods, 0303 health sciences, Natural menopause, Women's cancers Radboud Institute for Molecular Life Sciences [Radboudumc 17], Obstetrics, BRCA1 Protein, Breast Neoplasms/epidemiology, Incidence (epidemiology), Incidence, WOMEN, ASSOCIATION, Middle Aged, lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens, OVARIAN, BRCA2 Protein/genetics, 3. Good health, Menopause, Risk-reducing salpingo-oophorectomy, [SDV] Life Sciences [q-bio], 030220 oncology & carcinogenesis, SURVIVAL, Female, Research Article, Cohort study, Adult, medicine.medical_specialty, Salpingo-oophorectomy, Breast Neoplasms, [SDV.CAN]Life Sciences [q-bio]/Cancer, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, lcsh:RC254-282, 03 medical and health sciences, breast cancer, SDG 3 - Good Health and Well-being, [SDV.CAN] Life Sciences [q-bio]/Cancer, medicine, Humans, METAANALYSIS, 030304 developmental biology, BRCA2 Protein, [SDV.GEN]Life Sciences [q-bio]/Genetics, business.industry, CONSORTIUM, risk-reducing salpingo-oophorectomy, International Agencies, medicine.disease, BRCA1, BRCA2, KCONFAB, REDUCTION, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, LINK, Mutation, BRCA1 Protein/genetics, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, business, Risk Reduction Behavior
Abstract

The effect of risk-reducing salpingo-oophorectomy (RRSO) on breast cancer risk for BRCA1 and BRCA2 mutation carriers is uncertain. Retrospective analyses have suggested a protective effect but may be substantially biased. Prospective studies have had limited power, particularly for BRCA2 mutation carriers. Further, previous studies have not considered the effect of RRSO in the context of natural menopause. A multi-centre prospective cohort of 2272 BRCA1 and 1605 BRCA2 mutation carriers was followed for a mean of 5.4 and 4.9 years, respectively; 426 women developed incident breast cancer. RRSO was modelled as a time-dependent covariate in Cox regression, and its effect assessed in premenopausal and postmenopausal women. There was no association between RRSO and breast cancer for BRCA1 (HR = 1.23; 95% CI 0.94-1.61) or BRCA2 (HR = 0.88; 95% CI 0.62-1.24) mutation carriers. For BRCA2 mutation carriers, HRs were 0.68 (95% CI 0.40-1.15) and 1.07 (95% CI 0.69-1.64) for RRSO carried out before or after age 45 years, respectively. The HR for BRCA2 mutation carriers decreased with increasing time since RRSO (HR = 0.51; 95% CI 0.26-0.99 for 5 years or longer after RRSO). Estimates for premenopausal women were similar. We found no evidence that RRSO reduces breast cancer risk for BRCA1 mutation carriers. A potentially beneficial effect for BRCA2 mutation carriers was observed, particularly after 5 years following RRSO. These results may inform counselling and management of carriers with respect to RRSO. The BCFR was supported by grant UM1 CA164920 from the National Cancer Institute. The content of this manuscript does not necessarily reflect the views or policies of the National Cancer Institute or any of the collaborating centres in the Breast Cancer Family Registry (BCFR), nor does mention of trade names, commercial products, or organisations imply endorsement by the US Government or the BCFR. CNIO was partially supported by the Spanish Ministry of Economy and Competitiveness (MINECO) SAF2014-57680-R and the Spanish Research Network on Rare Diseases (CIBERER). CNIO was also partially supported by FISPI16/00440. INHERIT was supported by the Canadian Institutes of Health Research for the 'CIHR Team in Familial Risks of Breast Cancer' program-grant #CRN-87521-and the Ministry of Economic Development, Innovation and Export Trade-grant #PSR-SIIRI-701. The PERSPECTIVE project was supported by the Government of Canada through Genome Canada and the Canadian Institutes of Health Research (GPH-129344), the Ministere de l'Economie, de la Science et de l' Innovation du Quebec through Genome Quebec, and The Quebec Breast Cancer Foundation. Jacques Simard is a Chairholder of the Canada Research Chair in Oncogenetics. EMBRACE is supported by the Cancer Research UK grants C1287/A23382 and C1287/A16563. D. Gareth Evans is supported by an NIHR grant to the Biomedical Research Centre, Manchester (IS-BRC-1215-20007). The investigators at The Institute of Cancer Research and The Royal Marsden NHS Foundation Trust are supported by an NIHR grant to the Biomedical Research Centre at The Institute of Cancer Research and The Royal Marsden NHS Foundation Trust. Ros Eeles and Elizabeth Bancroft are supported by the Cancer Research UK grant C5047/A8385. Ros Eeles is also supported by NIHR support to the Biomedical Research Centre at The Institute of Cancer Research and The Royal Marsden NHS Foundation Trust. Antonis C. Antoniou is funded by Cancer Research UK grants C12292/A20861 and C12292/A11174. MT is funded by the European Union Seventh Framework Program (2007-2013)/European Research Council (310018). The German Consortium for Hereditary Breast and Ovarian Cancer (GC-HBOC) is supported by the German Cancer Aid (grant no 110837, Rita K. Schmutzler). The national French cohort, GENEPSO, had been supported by a grant from the Fondation de France and the Ligue Nationale Contre le Cancer and is being supported by a grant from INCa as part of the European program ERA-NET on Translational Cancer Research (TRANSCAN-JTC2012, no. 2014-008). HCSC was supported by CIBERONC 161200301 from ISCIII (Spain), partially supported by European Regional Development FEDER funds. The HEBON study is supported by the Dutch Cancer Society grants NKI1998-1854, NKI2004-3088, NKI2007-3756, the Netherlands Organisation of Scientific Research grant NWO 91109024, the Pink Ribbon grants 110005 and 2014-187.WO76, the BBMRI grant NWO 184.021.007/CP46, and the Transcan grant JTC 2012 Cancer 12-054. The IHCC was supported by Grant PBZ_ KBN_122/P05/2004 and ERA-NET TRANSAN JTC 2012 Cancer 12-054 (ERA-NET-TRANSCAN/07/2014). This work was supported by grants to kConFab and the kConFab Follow-Up Study from Cancer Australia (809195); the Australian National Breast Cancer Foundation (IF 17); the National Health and Medical Research Council (454508, 288704, 145684); the National Institute of Health U.S.A. (1RO1CA159868); the Queensland Cancer Fund; the Cancer Councils of New South Wales, Victoria, Tasmania and South Australia; and the Cancer Foundation of Western Australia. KAP is an Australian National Breast Cancer Foundation fellow. MODSQUAD-Czech Republic, Brno, was supported by MH CZ -DRO (MMCI, 00209805) and by MEYS -NPS I -LO1413 to LF and MN. The Hungarian Breast and Ovarian Cancer Study was supported by Hungarian Research Grants KTIA-OTKA CK-80745, NKFI OTKA K-112228, and the Norwegian EEA Financial Mechanism HU0115/NA/2008-3/OP-9. Lund-BRCA collaborators are supported by the Swedish Cancer Society, Lund Hospital Funds, and European Research Council Advanced Grant ERC-2011-294576. Stockholm-BRCA collaborators are supported by the Swedish Cancer Society. The funders had no role in the design of the study; the collection, analysis, or interpretation of the data; the writing of the manuscript; or the decision to submit the manuscript for publication. Sí

Published
2020
Full Text
View/download PDF

5. Uptake of a randomized breast cancer prevention trial comparing letrozole to placebo in BRCA1/2 mutations carriers: the LIBER trial

Author

Lemonnier, J., Roca, L., Mijonnet, S., Gesta, P., Chiesa, J., Dreyfus, H., Vennin, P., Delnatte, C., Bignon, Y. J., Lortholary, A., Prieur, F., Gladieff, L., Lesur, A., Clough, K. B., Nogues, C., Martin, A-L., Centres, On behalf the French Fedration of Cancer, Pujol, P., Lasset, Christine, Berthet, P., Dugast, C., Delaloge, S., Fricker, J-P., Tennevet, I., Chabbert-Buffet, N., This, P., Baudry, K., Biostatistiques santé, Département biostatistiques et modélisation pour la santé et l'environnement [LBBE], Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), and Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Cancer Research, [SDV]Life Sciences [q-bio], Prophylactic Oophorectomy, 0302 clinical medicine, Breast Cancer Prevention Trial, Prospective Studies, Genetics (clinical), 0303 health sciences, education.field_of_study, BRCA1 Protein, Letrozole, Middle Aged, Prognosis, 3. Good health, Postmenopause, Oncology, 030220 oncology & carcinogenesis, Cohort, Female, medicine.drug, Adult, medicine.medical_specialty, Heterozygote, Ovariectomy, Population, Antineoplastic Agents, Breast Neoplasms, Placebo, 03 medical and health sciences, Breast cancer, Double-Blind Method, Internal medicine, Nitriles, Genetics, medicine, Humans, Genetic Predisposition to Disease, education, 030304 developmental biology, Aged, Retrospective Studies, Gynecology, BRCA2 Protein, business.industry, Prophylactic Mastectomy, Triazoles, medicine.disease, Mutation, Feasibility Studies, business, Follow-Up Studies
Abstract

Women with germline BRCA1 or BRCA2 (BRCA1/2) mutations are considered as an extreme risk population for developing breast cancer. Prophylactic mastectomy provides a valid option to reduce such risk, impacting however, the quality of life. Medical prevention by aromatase inhibitor that has also recently shown to have preventive effect may thus be considered as an alternative. LIBER is an ongoing double-blind, randomized phase III trial to evaluate the efficacy of 5-year letrozole versus placebo to decrease breast cancer incidence in post-menopausal BRCA1/2 mutation carriers (NCT00673335). We present data on the uptake of this trial. We compared characteristics of women in the LIBER trial (n = 113) to those of women enrolled in the prospective ongoing national GENEPSO cohort (n = 1,505). Uptake was evaluated through a survey sent to all active centres, with responses obtained from 17 to the 20 (85%) centres. According to the characteristics of the women enrolled in the GENEPSO cohort and the survey, approximately one-third of BRCA1/2 mutation carriers were eligible for the trial. Five hundred and thirty-four women eligible from chart review have been informed by mail about the prevention trial and were invited to an oral information by participating centres. Forty-four percentage of them came to the dedicated medical visit. Uptake of drug prevention trial was 32% among women informed orally and 15% of all the eligible women. The main reasons of refusal were: potential side effects, probability to receive the placebo and lack of support from their physicians. Additionally, we noticed that prior prophylactic oophorectomy and previous unilateral breast cancer were more frequent in women enrolled in the LIBER trial than in the French cohort (93% vs. 60% and 50% vs. 39%, respectively). Based on an overall 15% uptake among all eligible subjects, greater and wider information of the trial should be offered to women with BRCA1/2 mutation to improve recruitment. Women with previous unilateral breast cancer or prior prophylactic oophorectomy are more likely to enter a medical prevention trial.

Published
2011
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results