Search

Your search keyword '"Roos-Blom, M-J"' showing total 13 results
Start Over Author "Roos-Blom, M-J"
13 results on '"Roos-Blom, M-J"'

1. Oral contraceptive use and ovarian cancer risk for BRCA1/2 mutation carriers: an international cohort study

Author

Schrijver, LH, Antoniou, AC, Olsson, H, Mooij, TM, Roos-Blom, M-J, Azarang, L, Adlard, J, Ahmed, M, Barrowdale, D, Davidson, R, Donaldson, A, Eeles, R, Evans, DG, Frost, D, Henderson, A, Izatt, L, Ong, K-R, Bonadona, V, Coupier, I, Faivre, L, Fricker, J-P, Gesta, P, van Engelen, K, Jager, A, Menko, FH, Mourits, MJE, Singer, CF, Tan, YY, Foretova, L, Navratilova, M, Schmutzler, RK, Ellberg, C, Gerdes, A-M, Caldes, T, Simard, J, Olah, E, Jakubowska, A, Rantala, J, Osorio, A, Hopper, JL, Phillips, K-A, Milne, RL, Terry, MB, Nogues, C, Engel, C, Kast, K, Goldgar, DE, van Leeuwen, FE, Easton, DF, Andrieu, N, Rookus, MA, Schrijver, LH, Antoniou, AC, Olsson, H, Mooij, TM, Roos-Blom, M-J, Azarang, L, Adlard, J, Ahmed, M, Barrowdale, D, Davidson, R, Donaldson, A, Eeles, R, Evans, DG, Frost, D, Henderson, A, Izatt, L, Ong, K-R, Bonadona, V, Coupier, I, Faivre, L, Fricker, J-P, Gesta, P, van Engelen, K, Jager, A, Menko, FH, Mourits, MJE, Singer, CF, Tan, YY, Foretova, L, Navratilova, M, Schmutzler, RK, Ellberg, C, Gerdes, A-M, Caldes, T, Simard, J, Olah, E, Jakubowska, A, Rantala, J, Osorio, A, Hopper, JL, Phillips, K-A, Milne, RL, Terry, MB, Nogues, C, Engel, C, Kast, K, Goldgar, DE, van Leeuwen, FE, Easton, DF, Andrieu, N, and Rookus, MA

Abstract

BACKGROUND: Ovarian cancer risk in BRCA1 and BRCA2 mutation carriers has been shown to decrease with longer duration of oral contraceptive use. Although the effects of using oral contraceptives in the general population are well established (approximately 50% risk reduction in ovarian cancer), the estimated risk reduction in mutation carriers is much less precise because of potential bias and small sample sizes. In addition, only a few studies on oral contraceptive use have examined the associations of duration of use, time since last use, starting age, and calendar year of start with risk of ovarian cancer. OBJECTIVE: This study aimed to investigate in more detail the associations of various characteristics of oral contraceptive use and risk of ovarian cancer, to provide healthcare providers and carriers with better risk estimates. STUDY DESIGN: In this international retrospective study, ovarian cancer risk associations were assessed using oral contraceptives data on 3989 BRCA1 and 2445 BRCA2 mutation carriers. Age-dependent-weighted Cox regression analyses were stratified by study and birth cohort and included breast cancer diagnosis as a covariate. To minimize survival bias, analyses were left truncated at 5 years before baseline questionnaire. Separate analyses were conducted for each aspect of oral contraceptive use and in a multivariate analysis, including all these aspects. In addition, the analysis of duration of oral contraceptive use was stratified by recency of use. RESULTS: Oral contraceptives were less often used by mutation carriers who were diagnosed with ovarian cancer (ever use: 58.6% for BRCA1 and 53.5% BRCA2) than by unaffected carriers (ever use: 88.9% for BRCA1 and 80.7% for BRCA2). The median duration of use was 7 years for both BRCA1 and BRCA2 carriers who developed ovarian cancer and 9 and 8 years for unaffected BRCA1 and BRCA2 carriers with ovarian cancer, respectively. For BRCA1 mutation carriers, univariate analyses have shown that both a

Published
2021

2. Alcohol consumption, cigarette smoking, and risk of breast cancer for BRCA1 and BRCA2 mutation carriers: Results from the BRCA1 and BRCA2 cohort consortium.

Author

Walker L., Li H., Terry M.B., Antoniou A.C., Phillips K.-A., Kast K., Mooij T.M., Engel C., Nogues C., Stoppa-Lyonnet D., Lasset C., Berthet P., Mari V., Caron O., Barrowdale D., Frost D., Brewer C., Evans D.G., Izatt L., Side L., Tischkowitz M., Rogers M.T., Porteous M.E., Snape K., Meijers-Heijboer H.E.J., Gille J.J.P., Blok M.J., Hoogerbrugge N., Daly M.B., Andrulis I.L., Buys S.S., John E.M., McLachlan S.-A., Friedlander M., Tan Y.Y., Osorio A., Caldes T., Jakubowska A., Simard J., Singer C.F., Olah E., Navratilova M., Foretova L., Gerdes A.-M., Roos-Blom M.-J., Arver B., Olsson H., Schmutzler R.K., Hopper J.L., Milne R.L., Easton D.F., Van Leeuwen F.E., Rookus M.A., Andrieu N., Goldgar D.E., Walker L., Li H., Terry M.B., Antoniou A.C., Phillips K.-A., Kast K., Mooij T.M., Engel C., Nogues C., Stoppa-Lyonnet D., Lasset C., Berthet P., Mari V., Caron O., Barrowdale D., Frost D., Brewer C., Evans D.G., Izatt L., Side L., Tischkowitz M., Rogers M.T., Porteous M.E., Snape K., Meijers-Heijboer H.E.J., Gille J.J.P., Blok M.J., Hoogerbrugge N., Daly M.B., Andrulis I.L., Buys S.S., John E.M., McLachlan S.-A., Friedlander M., Tan Y.Y., Osorio A., Caldes T., Jakubowska A., Simard J., Singer C.F., Olah E., Navratilova M., Foretova L., Gerdes A.-M., Roos-Blom M.-J., Arver B., Olsson H., Schmutzler R.K., Hopper J.L., Milne R.L., Easton D.F., Van Leeuwen F.E., Rookus M.A., Andrieu N., and Goldgar D.E.

Abstract

Background: Tobacco smoking and alcohol consumption have been intensively studied in the general population to assess their effects on the risk of breast cancer, but very few studies have examined these effects in BRCA1 and BRCA2 mutation carriers. Given the high breast cancer risk for mutation carriers and the importance of BRCA1 and BRCA2 in DNA repair, better evidence on the associations of these lifestyle factors with breast cancer risk is essential. Method(s): Using a large international pooled cohort of BRCA1 and BRCA2 mutation carriers, we conducted retrospective (5,707 BRCA1 mutation carriers and 3,525 BRCA2 mutation carriers) and prospective (2,276 BRCA1 mutation carriers and 1,610 BRCA2 mutation carriers) analyses of alcohol and tobacco consumption using Cox proportional hazards models. Result(s): For both BRCA1 and BRCA2 mutation carriers, none of the smoking-related variables was associated with breast cancer risk, except smoking for more than 5 years before a first full-term pregnancy (FFTP) when compared with parous women who never smoked. For BRCA1 mutation carriers, the HR from retrospective analysis (HRR) was 1.19 [95% confidence interval (CI), 1.02-1.39] and the HR from prospective analysis (HRP) was 1.36 (95% CI, 0.99-1.87). For BRCA2 mutation carriers, smoking for more than 5 years before an FFTP showed an association of a similar magnitude, but the confidence limits were wider (HRR = 1.25; 95% CI, 1.01-1.55 and HRP = 1.30; 95% CI, 0.83-2.01). For both carrier groups, alcohol consumption was not associated with breast cancer risk. Conclusion(s): The finding that smoking during the prereproductive years increases breast cancer risk for mutation carriers warrants further investigation.Copyright © 2020 American Association for Cancer Research.

Published
2020

3. Erratum: Risk-reducing salpingo-oophorectomy, natural menopause, and breast cancer risk: An international prospective cohort of BRCA1 and BRCA2 mutation carriers (Breast Cancer Res (2020) 22 (8) DOI: 10.1186/s13058-020-1247-4).

Author

Izatt 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., Van Leeuwen F.E., 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., Mavaddat N., Antoniou A.C., Mooij T.M., Hooning M.J., Heemskerk-Gerritsen B.A., Nogues C., Gauthier-Villars M., Caron O., Gesta P., Pujol P., Lortholary A., Barrowdale D., Frost D., Evans D.G., Adlard J., Eeles R., Brewer C., Tischkowitz M., Henderson A., Cook J., Eccles D., Van Engelen K., Mourits M.J.E., Ausems M.G.E.M., Koppert L.B., Hopper J.L., Izatt 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., Van Leeuwen F.E., 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., Mavaddat N., Antoniou A.C., Mooij T.M., Hooning M.J., Heemskerk-Gerritsen B.A., Nogues C., Gauthier-Villars M., Caron O., Gesta P., Pujol P., Lortholary A., Barrowdale D., Frost D., Evans D.G., Adlard J., Eeles R., Brewer C., Tischkowitz M., Henderson A., Cook J., Eccles D., Van Engelen K., Mourits M.J.E., Ausems M.G.E.M., Koppert L.B., and Hopper J.L.

Abstract

After publication of the original article [1], we were notified that columns in Table 2 were erroneously displayed.Copyright © 2020 The Author(s). Reference:.

Published
2020

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

Author

Bera O., Fourme-Mouret E., Fricker J.-P., Lasset C., Bonadona V., Berthet P., Faivre L., Luporsi E., Mari V., Gladieff L., Sobol H., Eisinger F., Longy M., Dugast C., Colas C., Coupier I., Corsini C., 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., Cohen-Haguenauer O., Venat-Bouvet L., Leroux D., Dreyfus H., Zattara-Cannoni H., Fert-Ferrer S., Nogues C., Gauthier-Villars M., Caron O., Gesta P., Pujol P., Lortholary A., 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., Van Asperen C.J., Mensenkamp A.R., Meijers-Heijboer H.E.J., Blok M.J., Oosterwijk J.C., Verloop J., Van Den Broek E., Van Engelen K., Mourits M.J.E., Ausems M.G.E.M., 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., Van Leeuwen F.E., 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., Mavaddat N., Antoniou A.C., Mooij T.M., Hooning M.J., Heemskerk-Gerritsen B.A., Laborde L., Breysse E., Stoppa-Lyonnet D., Buecher B., Bera O., Fourme-Mouret E., Fricker J.-P., Lasset C., Bonadona V., Berthet P., Faivre L., Luporsi E., Mari V., Gladieff L., Sobol H., Eisinger F., Longy M., Dugast C., Colas C., Coupier I., Corsini C., 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., Cohen-Haguenauer O., Venat-Bouvet L., Leroux D., Dreyfus H., Zattara-Cannoni H., Fert-Ferrer S., Nogues C., Gauthier-Villars M., Caron O., Gesta P., Pujol P., Lortholary A., 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., Van Asperen C.J., Mensenkamp A.R., Meijers-Heijboer H.E.J., Blok M.J., Oosterwijk J.C., Verloop J., Van Den Broek E., Van Engelen K., Mourits M.J.E., Ausems M.G.E.M., 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., Van Leeuwen F.E., 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., Mavaddat N., Antoniou A.C., Mooij T.M., Hooning M.J., Heemskerk-Gerritsen B.A., Laborde L., Breysse E., Stoppa-Lyonnet D., and Buecher B.

Abstract

Background: 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. Method(s): 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. Result(s): 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. Conclusion(s): 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.Copyright © 2020 The Author(s).

Published
2020

5. Risk-reducing salpingo-oophorectomy, natural menopause, and breast cancer risk: an international prospective cohort of BRCA1 and BRCA2 mutation carriers (vol 22, 8, 2020)

Author

Mavaddat, N, Antoniou, AC, Mooij, TM, Hooning, MJ, Heemskerk-Gerritsen, BA, Nogues, C, Gauthier-Villars, M, Caron, O, Gesta, P, Pujol, P, Lortholary, A, Barrowdale, D, Frost, D, Evans, DG, Izatt, L, Adlard, J, Eeles, R, Brewer, C, Tischkowitz, M, Henderson, A, Cook, J, Eccles, D, van Engelen, K, Mourits, MJE, Ausems, MGEM, Koppert, LB, Hopper, JL, John, EM, Chung, WK, Andrulis, IL, Daly, MB, Buys, SS, Benitez, J, Caldes, T, Jakubowska, A, Simard, J, Singer, CF, Tan, Y, Olah, E, Navratilova, M, Foretova, L, Gerdes, A-M, Roos-Blom, M-J, Van Leeuwen, FE, Arver, B, Olsson, H, Schmutzler, RK, Engel, C, Kast, K, Phillips, K-A, Terry, MB, Milne, RL, Goldgar, DE, Rookus, MA, Andrieu, N, Easton, DF, Mavaddat, N, Antoniou, AC, Mooij, TM, Hooning, MJ, Heemskerk-Gerritsen, BA, Nogues, C, Gauthier-Villars, M, Caron, O, Gesta, P, Pujol, P, Lortholary, A, Barrowdale, D, Frost, D, Evans, DG, Izatt, L, Adlard, J, Eeles, R, Brewer, C, Tischkowitz, M, Henderson, A, Cook, J, Eccles, D, van Engelen, K, Mourits, MJE, Ausems, MGEM, Koppert, LB, Hopper, JL, John, EM, Chung, WK, Andrulis, IL, Daly, MB, Buys, SS, Benitez, J, Caldes, T, Jakubowska, A, Simard, J, Singer, CF, Tan, Y, Olah, E, Navratilova, M, Foretova, L, Gerdes, A-M, Roos-Blom, M-J, Van Leeuwen, FE, Arver, B, Olsson, H, Schmutzler, RK, Engel, C, Kast, K, Phillips, K-A, Terry, MB, Milne, RL, Goldgar, DE, Rookus, MA, Andrieu, N, and Easton, DF

Abstract

After publication of the original article [1], we were notified that columns in Table 2 were erroneously displayed.

Published
2020

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

Author

Mavaddat, N, Antoniou, AC, Mooij, TM, Hooning, MJ, Heemskerk-Gerritsen, BA, 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, TD, 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, DG, Izatt, L, Adlard, J, Eeles, R, Brewer, C, Tischkowitz, M, Henderson, A, Cook, J, Eccles, D, Hogervorst, FBL, Collee, JM, van Asperen, CJ, Mensenkamp, AR, Ausems, MGEM, Meijers-Heijboer, HEJ, van Engelen, K, Blok, MJ, Oosterwijk, JC, Verloop, J, van den Broek, E, Mourits, MJE, Koppert, LB, Hopper, JL, John, EM, Chung, WK, Andrulis, IL, Daly, MB, Buys, SS, Benitez, J, Caldes, T, Jakubowska, A, Simard, J, Singer, CF, Tan, Y, Olah, E, Navratilova, M, Foretova, L, Gerdes, A-M, Roos-Blom, M-J, Van Leeuwen, FE, Arver, B, Olsson, H, Schmutzler, RK, Engel, C, Kast, K, Phillips, K-A, Terry, MB, Milne, RL, Goldgar, DE, Rookus, MA, Andrieu, N, Easton, DF, Mavaddat, N, Antoniou, AC, Mooij, TM, Hooning, MJ, Heemskerk-Gerritsen, BA, 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, TD, 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, DG, Izatt, L, Adlard, J, Eeles, R, Brewer, C, Tischkowitz, M, Henderson, A, Cook, J, Eccles, D, Hogervorst, FBL, Collee, JM, van Asperen, CJ, Mensenkamp, AR, Ausems, MGEM, Meijers-Heijboer, HEJ, van Engelen, K, Blok, MJ, Oosterwijk, JC, Verloop, J, van den Broek, E, Mourits, MJE, Koppert, LB, Hopper, JL, John, EM, Chung, WK, Andrulis, IL, Daly, MB, Buys, SS, Benitez, J, Caldes, T, Jakubowska, A, Simard, J, Singer, CF, Tan, Y, Olah, E, Navratilova, M, Foretova, L, Gerdes, A-M, Roos-Blom, M-J, Van Leeuwen, FE, Arver, B, Olsson, H, Schmutzler, RK, Engel, C, Kast, K, Phillips, K-A, Terry, MB, Milne, RL, Goldgar, DE, Rookus, MA, Andrieu, N, and Easton, DF

Abstract

BACKGROUND: 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. METHODS: 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. RESULTS: 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. CONCLUSION: 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.

Published
2020

7. Alcohol Consumption, Cigarette Smoking, and Risk of Breast Cancer for BRCA1 and BRCA2 Mutation Carriers: Results from The BRCA1 and BRCA2 Cohort Consortium

Author

Li, H, Terry, MB, Antoniou, AC, Phillips, K-A, Kast, K, Mooij, TM, Engel, C, Nogues, C, Stoppa-Lyonnet, D, Lasset, C, Berthet, P, Mari, V, Caron, O, Barrowdale, D, Frost, D, Brewer, C, Evans, DG, Izatt, L, Side, L, Walker, L, Tischkowitz, M, Rogers, MT, Porteous, ME, Snape, K, Meijers-Heijboer, HEJ, Gille, JJP, Blok, MJ, Hoogerbrugge, N, Daly, MB, Andrulis, IL, Buys, SS, John, EM, McLachlan, S-A, Friedlander, M, Tan, YY, Osorio, A, Caldes, T, Jakubowska, A, Simard, J, Singer, CF, Olah, E, Navratilova, M, Foretova, L, Gerdes, A-M, Roos-Blom, M-J, Arver, B, Olsson, H, Schmutzler, RK, Hopper, JL, Milne, RL, Easton, DF, Van Leeuwen, FE, Rookus, MA, Andrieu, N, Goldgar, DE, Li, H, Terry, MB, Antoniou, AC, Phillips, K-A, Kast, K, Mooij, TM, Engel, C, Nogues, C, Stoppa-Lyonnet, D, Lasset, C, Berthet, P, Mari, V, Caron, O, Barrowdale, D, Frost, D, Brewer, C, Evans, DG, Izatt, L, Side, L, Walker, L, Tischkowitz, M, Rogers, MT, Porteous, ME, Snape, K, Meijers-Heijboer, HEJ, Gille, JJP, Blok, MJ, Hoogerbrugge, N, Daly, MB, Andrulis, IL, Buys, SS, John, EM, McLachlan, S-A, Friedlander, M, Tan, YY, Osorio, A, Caldes, T, Jakubowska, A, Simard, J, Singer, CF, Olah, E, Navratilova, M, Foretova, L, Gerdes, A-M, Roos-Blom, M-J, Arver, B, Olsson, H, Schmutzler, RK, Hopper, JL, Milne, RL, Easton, DF, Van Leeuwen, FE, Rookus, MA, Andrieu, N, and Goldgar, DE

Abstract

BACKGROUND: Tobacco smoking and alcohol consumption have been intensively studied in the general population to assess their effects on the risk of breast cancer, but very few studies have examined these effects in BRCA1 and BRCA2 mutation carriers. Given the high breast cancer risk for mutation carriers and the importance of BRCA1 and BRCA2 in DNA repair, better evidence on the associations of these lifestyle factors with breast cancer risk is essential. METHODS: Using a large international pooled cohort of BRCA1 and BRCA2 mutation carriers, we conducted retrospective (5,707 BRCA1 mutation carriers and 3,525 BRCA2 mutation carriers) and prospective (2,276 BRCA1 mutation carriers and 1,610 BRCA2 mutation carriers) analyses of alcohol and tobacco consumption using Cox proportional hazards models. RESULTS: For both BRCA1 and BRCA2 mutation carriers, none of the smoking-related variables was associated with breast cancer risk, except smoking for more than 5 years before a first full-term pregnancy (FFTP) when compared with parous women who never smoked. For BRCA1 mutation carriers, the HR from retrospective analysis (HRR) was 1.19 [95% confidence interval (CI), 1.02-1.39] and the HR from prospective analysis (HRP) was 1.36 (95% CI, 0.99-1.87). For BRCA2 mutation carriers, smoking for more than 5 years before an FFTP showed an association of a similar magnitude, but the confidence limits were wider (HRR = 1.25; 95% CI, 1.01-1.55 and HRP = 1.30; 95% CI, 0.83-2.01). For both carrier groups, alcohol consumption was not associated with breast cancer risk. CONCLUSIONS: The finding that smoking during the prereproductive years increases breast cancer risk for mutation carriers warrants further investigation. IMPACT: This is the largest prospective study of BRCA mutation carriers to assess these important risk factors.

Published
2020

8. The Influence of Number and Timing of Pregnancies on Breast Cancer Risk for Women With BRCA1 or BRCA2 Mutations

Author

Terry, MB, Liao, Y, Kast, K, Antoniou, AC, McDonald, JA, Mooij, TM, Engel, C, Nogues, C, Buecher, B, Mari, V, Moretta-Serra, J, Gladieff, L, Luporsi, E, Barrowdale, D, Frost, D, Henderson, A, Brewer, C, Evans, DG, Eccles, D, Cook, J, Ong, K-R, Izatt, L, Ahmed, M, Morrison, PJ, Dommering, CJ, Oosterwijk, JC, Ausems, MGEM, Kriege, M, Buys, SS, Andrulis, IL, John, EM, Daly, M, Friedlander, M, McLachlan, SA, Osorio, A, Caldes, T, Jakubowska, A, Simard, J, Singer, CF, Tan, Y, Olah, E, Navratilova, M, Foretova, L, Gerdes, A-M, Roos-Blom, M-J, Arver, B, Olsson, H, Schmutzler, RK, Hopper, JL, van Leeuwen, FE, Goldgar, D, Milne, RL, Easton, DF, Rookus, MA, Andrieu, N, and EMBRACE, GENEPSO, BCFR, HEBON, kConFab and IBCCS

Subjects
endocrine system diseases, skin and connective tissue diseases
Abstract

Background: Full-term pregnancy (FTP) is associated with a reduced breast cancer (BC) risk over time, but women are at increased BC risk in the immediate years following an FTP. No large prospective studies, however, have examined whether the number and timing of pregnancies are associated with BC risk for BRCA1 and BRCA2 mutation carriers. Methods: Using weighted and time-varying Cox proportional hazards models, we investigated whether reproductive events are associated with BC risk for mutation carriers using a retrospective cohort (5707 BRCA1 and 3525 BRCA2 mutation carriers) and a prospective cohort (2276 BRCA1 and 1610 BRCA2 mutation carriers), separately for each cohort and the combined prospective and retrospective cohort. Results: For BRCA1 mutation carriers, there was no overall association with parity compared with nulliparity (combined hazard ratio [HRc] = 0.99, 95% confidence interval [CI] = 0.83 to 1.18). Relative to being uniparous, an increased number of FTPs was associated with decreased BC risk (HRc = 0.79, 95% CI = 0.69 to 0.91; HRc = 0.70, 95% CI = 0.59 to 0.82; HRc = 0.50, 95% CI = 0.40 to 0.63, for 2, 3, and ≥4 FTPs, respectively, Ptrend < .0001) and increasing duration of breastfeeding was associated with decreased BC risk (combined cohort Ptrend = .0003). Relative to being nulliparous, uniparous BRCA1 mutation carriers were at increased BC risk in the prospective analysis (prospective hazard ration [HRp] = 1.69, 95% CI = 1.09 to 2.62). For BRCA2 mutation carriers, being parous was associated with a 30% increase in BC risk (HRc = 1.33, 95% CI = 1.05 to 1.69), and there was no apparent decrease in risk associated with multiparity except for having at least 4 FTPs vs. 1 FTP (HRc = 0.72, 95% CI = 0.54 to 0.98). Conclusions: These findings suggest differential associations with parity between BRCA1 and BRCA2 mutation carriers with higher risk for uniparous BRCA1 carriers and parous BRCA2 carriers.

Published
2019

9. Oral contraceptive use and breast cancer risk: Retrospective and prospective analyses from a BRCA1 and BRCA2 mutation carrier cohort study.

Author

Roos-Blom M.-J., Walker L., Bonadona V., Leroux D., Mouret-Fourme E., Venat-Bouvet L., Buys S.S., Southey M.C., John E.M., Chung W.K., Daly M.B., Bane A., van Asperen C.J., Garcia E.B.G., Mourits M.J., Friedlander M.L., McLachlan S.-A., Singer C.F., Foretova L., Gerdes A.-M., Caldes T., Olah E., Jakubowska A., Nogues C., Andrieu N., Easton D.F., van Leeuwen F.E., Hopper J.L., Milne R.L., Antoniou A.C., Rookus M.A., Laborde L., Pontois P., Stoppa-Lyonnet D., Gauthier-Villars M., Buecher B., Caron O., Fricker J.-P., Lasset C., Berthet P., Faivre L., Luporsi E., Frenay M., Gladieff L., Gesta P., Sobol H., Eisinger F., Moretta J., Longy M., Dugast C., Colas C., Soubrier F., Coupier I., Pujol P., Lortholary A., Vennin P., Adenis C., Nguyen T.D., Delnatte C., Rossi A., Tinat J., Tennevet I., Limacher J.-M., Maugard C., Bignon Y.-J., Demange L., Dreyfus H., Cohen-Haguenauer O., Gilbert B., Zattara-Cannoni H., Schrijver L.H., Olsson H., Phillips K.-A., Terry M.B., Goldgar D.E., Kast K., Engel C., Mooij T.M., Adlard J., Barrowdale D., Davidson R., Eeles R., Ellis S., Evans D.G., Frost D., Izatt L., Porteous M.E., Side L.E., Roos-Blom M.-J., Walker L., Bonadona V., Leroux D., Mouret-Fourme E., Venat-Bouvet L., Buys S.S., Southey M.C., John E.M., Chung W.K., Daly M.B., Bane A., van Asperen C.J., Garcia E.B.G., Mourits M.J., Friedlander M.L., McLachlan S.-A., Singer C.F., Foretova L., Gerdes A.-M., Caldes T., Olah E., Jakubowska A., Nogues C., Andrieu N., Easton D.F., van Leeuwen F.E., Hopper J.L., Milne R.L., Antoniou A.C., Rookus M.A., Laborde L., Pontois P., Stoppa-Lyonnet D., Gauthier-Villars M., Buecher B., Caron O., Fricker J.-P., Lasset C., Berthet P., Faivre L., Luporsi E., Frenay M., Gladieff L., Gesta P., Sobol H., Eisinger F., Moretta J., Longy M., Dugast C., Colas C., Soubrier F., Coupier I., Pujol P., Lortholary A., Vennin P., Adenis C., Nguyen T.D., Delnatte C., Rossi A., Tinat J., Tennevet I., Limacher J.-M., Maugard C., Bignon Y.-J., Demange L., Dreyfus H., Cohen-Haguenauer O., Gilbert B., Zattara-Cannoni H., Schrijver L.H., Olsson H., Phillips K.-A., Terry M.B., Goldgar D.E., Kast K., Engel C., Mooij T.M., Adlard J., Barrowdale D., Davidson R., Eeles R., Ellis S., Evans D.G., Frost D., Izatt L., Porteous M.E., and Side L.E.

Abstract

Background: For BRCA1 and BRCA2 mutation carriers, the association between oral contraceptive preparation (OCP) use and breast cancer (BC) risk is still unclear. Method(s): Breast camcer risk associations were estimated from OCP data on 6030 BRCA1 and 3809 BRCA2 mutation carriers using age-dependent Cox regression, stratified by study and birth cohort. Prospective, left-truncated retrospective and fullcohort retrospective analyses were performed. Result(s): For BRCA1 mutation carriers, OCP use was not associated with BC risk in prospective analyses (hazard ratio [HR] = 1.08, 95% confidence interval [CI] = 0.75 to 1.56), but in the left-truncated and full-cohort retrospective analyses, risks were increased by 26% (95% CI = 6% to 51%) and 39% (95% CI = 23% to 58%), respectively. For BRCA2mutation carriers, OCP use was associated with BC risk in prospective analyses (HR = 1.75, 95% CI = 1.03 to 2.97), but retrospective analyses were inconsistent (left-truncated: HR = 1.06, 95% CI = 0.85 to 1.33; full cohort: HR = 1.52, 95% CI = 1.28 to 1.81). There was evidence of increasing risk with duration of use, especially before the first full-termpregnancy (BRCA1: both retrospective analyses, P < .001 and P = .001, respectively; BRCA2: full retrospective analysis, P = .002). Conclusion(s): Prospective analyses did not show that past use of OCP is associated with an increased BC risk for BRCA1 mutation carriers in young middle-aged women (40-50 years). For BRCA2 mutation carriers, a causal association is also not likely at those ages. Findings between retrospective and prospective analyses were inconsistent and could be due to survival bias or a true association for younger women who were underrepresented in the prospective cohort. Given the uncertain safety of long-termOCP use for BRCA1/2 mutation carriers, indications other than contraception should be avoided and nonhormonal contraceptive methods should be discussed.Copyright © The Author(s) 2018.

Published
2018

10. Oral Contraceptive Use and Breast Cancer Risk: Retrospective and Prospective Analyses From a BRCA1 and BRCA2 Mutation Carrier Cohort Study

Author

Schrijver, LH, Olsson, H, Phillips, K-A, Terry, MB, Goldgar, DE, Kast, K, Engel, C, Mooij, TM, Adlard, J, Barrowdale, D, Davidson, R, Eeles, R, Ellis, S, Evans, DG, Frost, D, Izatt, L, Porteous, ME, Side, LE, Walker, L, Berthet, P, Bonadona, V, Leroux, D, Mouret-Fourme, E, Venat-Bouvet, L, Buys, SS, Southey, MC, John, EM, Chung, WK, Daly, MB, Bane, A, van Asperen, CJ, Garcia, EBG, Mourits, MJE, van Os, TAM, Roos-Blom, M-J, Friedlander, ML, McLachlan, S-A, Singer, CF, Tan, YY, Foretova, L, Navratilova, M, Schmutzler, RK, Ellberg, C, Gerdes, A-M, Caldes, T, Simard, J, Olah, E, Jakubowska, A, Arver, B, Osorio, A, Nogues, C, Andrieu, N, Easton, DF, van Leeuwen, FE, Hopper, JL, Milne, RL, Antoniou, AC, Rookus, MA, Hogervorst, FBL, Adank, MA, Schmidt, MK, Russell, NS, de Lange, JL, Wijnands, R, Jenner, DJ, Collee, JM, van den Ouweland, AMW, Hooning, MJ, Seynaeve, C, van Deurzen, CHM, Obdeijn, IM, Wijnen, JT, Tollenaar, RAEM, Devilee, P, van Cronenburg, TCTEF, Kets, CM, Mensenkamp, AR, Ausems, MGEM, van der Luijt, RB, van der Pol, CC, Aalfs, CM, Meijers-Heijboer, HEJ, van Engelen, K, Gille, JJP, Waisfisz, Q, Gomez-Garcia, EB, Blok, MJ, Oosterwijk, JC, van der Hout, AH, Mourits, MJ, de Bock, GH, Siesling, S, Verloop, J, Overbeek, LIH, Schrijver, LH, Olsson, H, Phillips, K-A, Terry, MB, Goldgar, DE, Kast, K, Engel, C, Mooij, TM, Adlard, J, Barrowdale, D, Davidson, R, Eeles, R, Ellis, S, Evans, DG, Frost, D, Izatt, L, Porteous, ME, Side, LE, Walker, L, Berthet, P, Bonadona, V, Leroux, D, Mouret-Fourme, E, Venat-Bouvet, L, Buys, SS, Southey, MC, John, EM, Chung, WK, Daly, MB, Bane, A, van Asperen, CJ, Garcia, EBG, Mourits, MJE, van Os, TAM, Roos-Blom, M-J, Friedlander, ML, McLachlan, S-A, Singer, CF, Tan, YY, Foretova, L, Navratilova, M, Schmutzler, RK, Ellberg, C, Gerdes, A-M, Caldes, T, Simard, J, Olah, E, Jakubowska, A, Arver, B, Osorio, A, Nogues, C, Andrieu, N, Easton, DF, van Leeuwen, FE, Hopper, JL, Milne, RL, Antoniou, AC, Rookus, MA, Hogervorst, FBL, Adank, MA, Schmidt, MK, Russell, NS, de Lange, JL, Wijnands, R, Jenner, DJ, Collee, JM, van den Ouweland, AMW, Hooning, MJ, Seynaeve, C, van Deurzen, CHM, Obdeijn, IM, Wijnen, JT, Tollenaar, RAEM, Devilee, P, van Cronenburg, TCTEF, Kets, CM, Mensenkamp, AR, Ausems, MGEM, van der Luijt, RB, van der Pol, CC, Aalfs, CM, Meijers-Heijboer, HEJ, van Engelen, K, Gille, JJP, Waisfisz, Q, Gomez-Garcia, EB, Blok, MJ, Oosterwijk, JC, van der Hout, AH, Mourits, MJ, de Bock, GH, Siesling, S, Verloop, J, and Overbeek, LIH

Abstract

BACKGROUND: For BRCA1 and BRCA2 mutation carriers, the association between oral contraceptive preparation (OCP) use and breast cancer (BC) risk is still unclear. METHODS: Breast camcer risk associations were estimated from OCP data on 6030 BRCA1 and 3809 BRCA2 mutation carriers using age-dependent Cox regression, stratified by study and birth cohort. Prospective, left-truncated retrospective and full-cohort retrospective analyses were performed. RESULTS: For BRCA1 mutation carriers, OCP use was not associated with BC risk in prospective analyses (hazard ratio [HR] = 1.08, 95% confidence interval [CI] = 0.75 to 1.56), but in the left-truncated and full-cohort retrospective analyses, risks were increased by 26% (95% CI = 6% to 51%) and 39% (95% CI = 23% to 58%), respectively. For BRCA2 mutation carriers, OCP use was associated with BC risk in prospective analyses (HR = 1.75, 95% CI = 1.03 to 2.97), but retrospective analyses were inconsistent (left-truncated: HR = 1.06, 95% CI = 0.85 to 1.33; full cohort: HR = 1.52, 95% CI = 1.28 to 1.81). There was evidence of increasing risk with duration of use, especially before the first full-term pregnancy (BRCA1: both retrospective analyses, P < .001 and P = .001, respectively; BRCA2: full retrospective analysis, P = .002). CONCLUSIONS: Prospective analyses did not show that past use of OCP is associated with an increased BC risk for BRCA1 mutation carriers in young middle-aged women (40-50 years). For BRCA2 mutation carriers, a causal association is also not likely at those ages. Findings between retrospective and prospective analyses were inconsistent and could be due to survival bias or a true association for younger women who were underrepresented in the prospective cohort. Given the uncertain safety of long-term OCP use for BRCA1/2 mutation carriers, indications other than contraception should be avoided and nonhormonal contraceptive methods should be discussed.

Published
2018

11. The Influence of Number and Timing of Pregnancies on Breast Cancer Risk for Women With BRCA1 or BRCA2 Mutations

Author

Terry, MB, Liao, Y, Kast, K, Antoniou, AC, McDonald, JA, Mooij, TM, Engel, C, Nogues, C, Buecher, B, Mari, V, Moretta-Serra, J, Gladieff, L, Luporsi, E, Barrowdale, D, Frost, D, Henderson, A, Brewer, C, Evans, DG, Eccles, D, Cook, J, Ong, K-R, Izatt, L, Ahmed, M, Morrison, PJ, Dommering, CJ, Oosterwijk, JC, Ausems, MGEM, Kriege, M, Buys, SS, Andrulis, IL, John, EM, Daly, M, Friedlander, M, McLachlan, SA, Osorio, A, Caldes, T, Jakubowska, A, Simard, J, Singer, CF, Tan, Y, Olah, E, Navratilova, M, Foretova, L, Gerdes, A-M, Roos-Blom, M-J, Arver, B, Olsson, H, Schmutzler, RK, Hopper, JL, van Leeuwen, FE, Goldgar, D, Milne, RL, Easton, DF, Rookus, MA, Andrieu, N, Evans, G, Adlard, J, Eeles, R, Davidson, R, Tischkowitz, M, Snape, K, Walker, L, Porteous, M, Donaldson, A, Morrison, P, Eason, J, Rogers, M, Miller, C, Brady, A, Kennedy, MJ, Barwell, J, Gregory, H, Pottinger, C, Murray, A, Angelakos, M, Dite, G, Tsimiklis, H, Breysse, E, Pontois, P, Laborde, L, Stoppa-Lyonnet, D, Gauthier-Villars, M, Caron, O, Fourme-Mouret, E, Fricker, J-P, Lasset, C, Bonadona, V, Fert-Ferrer, S, Berthet, P, Venat-Bouvet, L, Gilbert-Dussardier, B, Faivre, L, Gesta, P, Sobol, H, Eisinger, F, Longy, M, Dugast, C, Coupier, I, Colas, C, Soubrier, F, Pujol, P, Corsini, C, Lortholary, A, Vennin, P, Adenis, C, Tan, DN, Penet, C, Delnatte, C, Tinat, J, Tennevet, I, Limacher, J-M, Maugard, C, Demange, L, Dreyfus, H, Cohen-Haguenauer, O, Leroux, D, Zattara-Cannoni, H, Bera, O, Hogervorst, FBL, Adank, MA, Schmidt, MK, Russell, NS, Jenner, DJ, Collee, JM, van den Ouweland, AMW, Hooning, MJ, Seynaeve, CM, van Deurzen, CHM, Obdeijn, IM, van Asperen, CJ, Devilee, P, Kets, CM, Mensenkamp, AR, Koudijs, MJ, Aalfs, CM, van Engelen, K, Gille, JJP, Gomez-Garcia, EB, Blok, MJ, van der Hout, AH, Mourits, MJ, de Bock, GH, Siesling, S, Verloop, J, van den Belt-Dusebout, AW, Terry, MB, Liao, Y, Kast, K, Antoniou, AC, McDonald, JA, Mooij, TM, Engel, C, Nogues, C, Buecher, B, Mari, V, Moretta-Serra, J, Gladieff, L, Luporsi, E, Barrowdale, D, Frost, D, Henderson, A, Brewer, C, Evans, DG, Eccles, D, Cook, J, Ong, K-R, Izatt, L, Ahmed, M, Morrison, PJ, Dommering, CJ, Oosterwijk, JC, Ausems, MGEM, Kriege, M, Buys, SS, Andrulis, IL, John, EM, Daly, M, Friedlander, M, McLachlan, SA, Osorio, A, Caldes, T, Jakubowska, A, Simard, J, Singer, CF, Tan, Y, Olah, E, Navratilova, M, Foretova, L, Gerdes, A-M, Roos-Blom, M-J, Arver, B, Olsson, H, Schmutzler, RK, Hopper, JL, van Leeuwen, FE, Goldgar, D, Milne, RL, Easton, DF, Rookus, MA, Andrieu, N, Evans, G, Adlard, J, Eeles, R, Davidson, R, Tischkowitz, M, Snape, K, Walker, L, Porteous, M, Donaldson, A, Morrison, P, Eason, J, Rogers, M, Miller, C, Brady, A, Kennedy, MJ, Barwell, J, Gregory, H, Pottinger, C, Murray, A, Angelakos, M, Dite, G, Tsimiklis, H, Breysse, E, Pontois, P, Laborde, L, Stoppa-Lyonnet, D, Gauthier-Villars, M, Caron, O, Fourme-Mouret, E, Fricker, J-P, Lasset, C, Bonadona, V, Fert-Ferrer, S, Berthet, P, Venat-Bouvet, L, Gilbert-Dussardier, B, Faivre, L, Gesta, P, Sobol, H, Eisinger, F, Longy, M, Dugast, C, Coupier, I, Colas, C, Soubrier, F, Pujol, P, Corsini, C, Lortholary, A, Vennin, P, Adenis, C, Tan, DN, Penet, C, Delnatte, C, Tinat, J, Tennevet, I, Limacher, J-M, Maugard, C, Demange, L, Dreyfus, H, Cohen-Haguenauer, O, Leroux, D, Zattara-Cannoni, H, Bera, O, Hogervorst, FBL, Adank, MA, Schmidt, MK, Russell, NS, Jenner, DJ, Collee, JM, van den Ouweland, AMW, Hooning, MJ, Seynaeve, CM, van Deurzen, CHM, Obdeijn, IM, van Asperen, CJ, Devilee, P, Kets, CM, Mensenkamp, AR, Koudijs, MJ, Aalfs, CM, van Engelen, K, Gille, JJP, Gomez-Garcia, EB, Blok, MJ, van der Hout, AH, Mourits, MJ, de Bock, GH, Siesling, S, Verloop, J, and van den Belt-Dusebout, AW

Abstract

BACKGROUND: Full-term pregnancy (FTP) is associated with a reduced breast cancer (BC) risk over time, but women are at increased BC risk in the immediate years following an FTP. No large prospective studies, however, have examined whether the number and timing of pregnancies are associated with BC risk for BRCA1 and BRCA2 mutation carriers. METHODS: Using weighted and time-varying Cox proportional hazards models, we investigated whether reproductive events are associated with BC risk for mutation carriers using a retrospective cohort (5707 BRCA1 and 3525 BRCA2 mutation carriers) and a prospective cohort (2276 BRCA1 and 1610 BRCA2 mutation carriers), separately for each cohort and the combined prospective and retrospective cohort. RESULTS: For BRCA1 mutation carriers, there was no overall association with parity compared with nulliparity (combined hazard ratio [HRc] = 0.99, 95% confidence interval [CI] = 0.83 to 1.18). Relative to being uniparous, an increased number of FTPs was associated with decreased BC risk (HRc = 0.79, 95% CI = 0.69 to 0.91; HRc = 0.70, 95% CI = 0.59 to 0.82; HRc = 0.50, 95% CI = 0.40 to 0.63, for 2, 3, and ≥4 FTPs, respectively, P trend < .0001) and increasing duration of breastfeeding was associated with decreased BC risk (combined cohort P trend = .0003). Relative to being nulliparous, uniparous BRCA1 mutation carriers were at increased BC risk in the prospective analysis (prospective hazard ration [HRp] = 1.69, 95% CI = 1.09 to 2.62). For BRCA2 mutation carriers, being parous was associated with a 30% increase in BC risk (HRc = 1.33, 95% CI = 1.05 to 1.69), and there was no apparent decrease in risk associated with multiparity except for having at least 4 FTPs vs. 1 FTP (HRc = 0.72, 95% CI = 0.54 to 0.98). CONCLUSIONS: These findings suggest differential associations with parity between BRCA1 and BRCA2 mutation carriers with higher risk for uniparous BRCA1 carriers and parous BRCA2 carriers.

Published
2018

12. Health professionals' perceptions about their clinical performance and the influence of audit and feedback on their intentions to improve practice: a theory-based study in Dutch intensive care units

Author

Gude, WT, Roos-Blom, M-J, van der Veer, SN, Dongelmans, DA, de Jonge, E, Francis, JJ, Peek, N, de Keizer, NF, Gude, WT, Roos-Blom, M-J, van der Veer, SN, Dongelmans, DA, de Jonge, E, Francis, JJ, Peek, N, and de Keizer, NF

Abstract

BACKGROUND: Audit and feedback aims to guide health professionals in improving aspects of their practice that need it most. Evidence suggests that feedback fails to increase accuracy of professional perceptions about clinical performance, which likely reduces audit and feedback effectiveness. This study investigates health professionals' perceptions about their clinical performance and the influence of feedback on their intentions to change practice. METHODS: We conducted an online laboratory experiment guided by Control Theory with 72 intensive care professionals from 21 units. For each of four new pain management indicators, we collected professionals' perceptions about their clinical performance; peer performance; targets; and improvement intentions before and after receiving first-time feedback. An electronic audit and feedback dashboard provided ICU's own performance, median and top 10% peer performance, and improvement recommendations. The experiment took place approximately 1 month before units enrolled into a cluster-randomised trial assessing the impact of adding a toolbox with suggested actions and materials to improve intensive care pain management. During the experiment, the toolbox was inaccessible; all participants accessed the same version of the dashboard. RESULTS: We analysed 288 observations. In 53.8%, intensive care professionals overestimated their clinical performance; but in only 13.5%, they underestimated it. On average, performance was overestimated by 22.9% (on a 0-100% scale). Professionals similarly overestimated peer performance, and set targets 20.3% higher than the top performance benchmarks. In 68.4% of cases, intentions to improve practice were consistent with actual gaps in performance, even before professionals had received feedback; which increased to 79.9% after receiving feedback (odds ratio, 2.41; 95% CI, 1.53 to 3.78). However, in 56.3% of cases, professionals still wanted to improve care aspects at which they were already top

Published
2018

13. Abstract P5-08-09: Use of oral contraceptives and risk of breast cancer in BRCA1 and BRCA2 mutation carriers: An international prospective cohort study; for the studies of EMBRACE, GENEPSO, HEBON, kConFab and BCFR

Author

Schrijver, LH, primary, Olsson, H, additional, Antoniou, AC, additional, Milne, RL, additional, Phillips, K-A, additional, Andrieu, N, additional, Easton, DF, additional, Goldgar, D, additional, Engel, C, additional, Kast, K, additional, Roos-Blom, M-J, additional, Mooij, TM, additional, Hopper, JL, additional, van Leeuwen, FE, additional, Terry, M-B, additional, and Rookus, MA, additional

Published
2017
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results