Search

Your search keyword '"Agnarsson BA"' showing total 9 results
Start Over Author "Agnarsson BA" Publisher oxford university press
9 results on '"Agnarsson BA"'

1. Genetic variation at 9p22.2 and ovarian cancer risk for BRCA1 and BRCA2 mutation carriers

Author

Ramus, S, Kartsonaki, C, Gayther, S, Pharoah, P, Sinilnikova, O, Beesley, J, Chen, X, Mcguffog, L, Healey, S, Couch, F, Wang, X, Fredericksen, Z, Peterlongo, P, Manoukian, S, Peissel, B, Zaffaroni, D, Roversi, G, Barile, M, Viel, A, Allavena, A, Ottini, L, Papi, L, Gismondi, V, Capra, F, Radice, P, Greene, M, Mai, P, Andrulis, I, Glendon, G, Ozcelik, H, Thomassen, M, Gerdes, A, Kruse, T, Cruger, D, Jensen, U, Caligo, M, Olsson, H, Kristoffersson, U, Lindblom, A, Arver, B, Karlsson, P, Stenmark Askmalm, M, Borg, A, Neuhausen, S, Ding, Y, Nathanson, K, Domchek, S, Jakubowska, A, Lubiński, J, Huzarski, T, Byrski, T, Gronwald, J, Górski, B, Cybulski, C, Dębniak, T, Osorio, A, Durán, M, Tejada, M, Benítez, J, Hamann, U, Rookus, M, Verhoef, S, Tilanus Linthorst, M, Vreeswijk, M, Bodmer, D, Ausems, M, van Os, T, Asperen, C, Blok, M, Meijers Heijboer, H, Peock, S, Cook, M, Oliver, C, Frost, D, Dunning, A, Evans, D, Eeles, R, Pichert, G, Cole, T, Hodgson, S, Brewer, C, Morrison, P, Porteous, M, Kennedy, M, Rogers, M, Side, L, Donaldson, A, Gregory, H, Godwin, A, Stoppa Lyonnet, D, Moncoutier, V, Castera, L, Mazoyer, S, Barjhoux, L, Bonadona, V, Leroux, D, Faivre, L, Lidereau, R, Nogues, C, Bignon, Y, Prieur, F, Collonge Rame, M, Venat Bouvet, L, Fert Ferrer, S, Miron, A, Buys, S, Hopper, J, Daly, M, John, E, Terry, M, Goldgar, D, Hansen, T, Jønson, L, Ejlertsen, B, Agnarsson, B, Offit, K, Kirchhoff, T, Vijai, J, Dutra Clarke, A, Przybylo, J, Montagna, M, Casella, C, Imyanitov, E, Janavicius, R, Blanco, I, Lázaro, C, Moysich, K, Karlan, B, Gross, J, Beattie, M, Schmutzler, R, Wappenschmidt, B, Meindl, A, Ruehl, I, Fiebig, B, Sutter, C, Arnold, N, Deissler, H, Varon Mateeva, R, Kast, K, Niederacher, D, Gadzicki, D, Caldes, T, de la Hoya, M, Nevanlinna, H, Aittomäki, K, Simard, J, Soucy, P, Spurdle, A, Holland, H, Chenevix Trench, G, Easton, D, Antoniou, A, Ramus, SJ, Gayther, SA, Pharoah, PDP, Sinilnikova, OM, McGuffog, L, Couch, FJ, Greene, MH, Mai, PL, Andrulis, IL, Kruse, TA, Jensen, UB, Caligo, MA, Neuhausen, SL, Ding, YC, Nathanson, KL, Domchek, SM, Rookus, MA, Tilanus Linthorst, MA, Vreeswijk, MP, Ausems, MGEM, van Os, TA, Asperen, CJ, Blok, MJ, Meijers Heijboer, HEJ, Dunning, AM, Evans, DG, Morrison, PJ, Kennedy, MJ, Rogers, MT, Side, LE, Buys, SS, Hopper, JL, Daly, MB, John, EM, Terry, MB, Hansen, TvO, Agnarsson, BA, Dutra Clarke, AVC, Przybylo, JA, Imyanitov, EN, Moysich, KB, Karlan, BY, Beattie, MS, Spurdle, AB, Easton, DF, Antoniou, AC, ROVERSI, GAIA, Ramus, S, Kartsonaki, C, Gayther, S, Pharoah, P, Sinilnikova, O, Beesley, J, Chen, X, Mcguffog, L, Healey, S, Couch, F, Wang, X, Fredericksen, Z, Peterlongo, P, Manoukian, S, Peissel, B, Zaffaroni, D, Roversi, G, Barile, M, Viel, A, Allavena, A, Ottini, L, Papi, L, Gismondi, V, Capra, F, Radice, P, Greene, M, Mai, P, Andrulis, I, Glendon, G, Ozcelik, H, Thomassen, M, Gerdes, A, Kruse, T, Cruger, D, Jensen, U, Caligo, M, Olsson, H, Kristoffersson, U, Lindblom, A, Arver, B, Karlsson, P, Stenmark Askmalm, M, Borg, A, Neuhausen, S, Ding, Y, Nathanson, K, Domchek, S, Jakubowska, A, Lubiński, J, Huzarski, T, Byrski, T, Gronwald, J, Górski, B, Cybulski, C, Dębniak, T, Osorio, A, Durán, M, Tejada, M, Benítez, J, Hamann, U, Rookus, M, Verhoef, S, Tilanus Linthorst, M, Vreeswijk, M, Bodmer, D, Ausems, M, van Os, T, Asperen, C, Blok, M, Meijers Heijboer, H, Peock, S, Cook, M, Oliver, C, Frost, D, Dunning, A, Evans, D, Eeles, R, Pichert, G, Cole, T, Hodgson, S, Brewer, C, Morrison, P, Porteous, M, Kennedy, M, Rogers, M, Side, L, Donaldson, A, Gregory, H, Godwin, A, Stoppa Lyonnet, D, Moncoutier, V, Castera, L, Mazoyer, S, Barjhoux, L, Bonadona, V, Leroux, D, Faivre, L, Lidereau, R, Nogues, C, Bignon, Y, Prieur, F, Collonge Rame, M, Venat Bouvet, L, Fert Ferrer, S, Miron, A, Buys, S, Hopper, J, Daly, M, John, E, Terry, M, Goldgar, D, Hansen, T, Jønson, L, Ejlertsen, B, Agnarsson, B, Offit, K, Kirchhoff, T, Vijai, J, Dutra Clarke, A, Przybylo, J, Montagna, M, Casella, C, Imyanitov, E, Janavicius, R, Blanco, I, Lázaro, C, Moysich, K, Karlan, B, Gross, J, Beattie, M, Schmutzler, R, Wappenschmidt, B, Meindl, A, Ruehl, I, Fiebig, B, Sutter, C, Arnold, N, Deissler, H, Varon Mateeva, R, Kast, K, Niederacher, D, Gadzicki, D, Caldes, T, de la Hoya, M, Nevanlinna, H, Aittomäki, K, Simard, J, Soucy, P, Spurdle, A, Holland, H, Chenevix Trench, G, Easton, D, Antoniou, A, Ramus, SJ, Gayther, SA, Pharoah, PDP, Sinilnikova, OM, McGuffog, L, Couch, FJ, Greene, MH, Mai, PL, Andrulis, IL, Kruse, TA, Jensen, UB, Caligo, MA, Neuhausen, SL, Ding, YC, Nathanson, KL, Domchek, SM, Rookus, MA, Tilanus Linthorst, MA, Vreeswijk, MP, Ausems, MGEM, van Os, TA, Asperen, CJ, Blok, MJ, Meijers Heijboer, HEJ, Dunning, AM, Evans, DG, Morrison, PJ, Kennedy, MJ, Rogers, MT, Side, LE, Buys, SS, Hopper, JL, Daly, MB, John, EM, Terry, MB, Hansen, TvO, Agnarsson, BA, Dutra Clarke, AVC, Przybylo, JA, Imyanitov, EN, Moysich, KB, Karlan, BY, Beattie, MS, Spurdle, AB, Easton, DF, Antoniou, AC, and ROVERSI, GAIA

Abstract

Germline mutations in the BRCA1 and BRCA2 genes are associated with increased risks of breast and ovarian cancers. Although several common variants have been associated with breast cancer susceptibility in mutation carriers, none have been associated with ovarian cancer susceptibility. A genome-wide association study recently identified an association between the rare allele of the single-nucleotide polymorphism (SNP) rs3814113 (ie, the C allele) at 9p22.2 and decreased risk of ovarian cancer for women in the general population. We evaluated the association of this SNP with ovarian cancer risk among BRCA1 or BRCA2 mutation carriers by use of data from the Consortium of Investigators of Modifiers of BRCA1/2.

Published
2011

2. Breast and Prostate Cancer Risks for Male BRCA1 and BRCA2 Pathogenic Variant Carriers Using Polygenic Risk Scores.

Author

Barnes DR, Silvestri V, Leslie G, McGuffog L, Dennis J, Yang X, Adlard J, Agnarsson BA, Ahmed M, Aittomäki K, Andrulis IL, Arason A, Arnold N, Auber B, Azzollini J, Balmaña J, Barkardottir RB, Barrowdale D, Barwell J, Belotti M, Benitez J, Berthet P, Boonen SE, Borg Å, Bozsik A, Brady AF, Brennan P, Brewer C, Brunet J, Bucalo A, Buys SS, Caldés T, Caligo MA, Campbell I, Cassingham H, Christensen LL, Cini G, Claes KBM, Cook J, Coppa A, Cortesi L, Damante G, Darder E, Davidson R, de la Hoya M, De Leeneer K, de Putter R, Del Valle J, Diez O, Ding YC, Domchek SM, Donaldson A, Eason J, Eeles R, Engel C, Evans DG, Feliubadaló L, Fostira F, Frone M, Frost D, Gallagher D, Gehrig A, Giraud S, Glendon G, Godwin AK, Goldgar DE, Greene MH, Gregory H, Gross E, Hahnen E, Hamann U, Hansen TVO, Hanson H, Hentschel J, Horvath J, Izatt L, Izquierdo A, James PA, Janavicius R, Jensen UB, Johannsson OT, John EM, Kramer G, Kroeldrup L, Kruse TA, Lautrup C, Lazaro C, Lesueur F, Lopez-Fernández A, Mai PL, Manoukian S, Matrai Z, Matricardi L, Maxwell KN, Mebirouk N, Meindl A, Montagna M, Monteiro AN, Morrison PJ, Muranen TA, Murray A, Nathanson KL, Neuhausen SL, Nevanlinna H, Nguyen-Dumont T, Niederacher D, Olah E, Olopade OI, Palli D, Parsons MT, Pedersen IS, Peissel B, Perez-Segura P, Peterlongo P, Petersen AH, Pinto P, Porteous ME, Pottinger C, Pujana MA, Radice P, Ramser J, Rantala J, Robson M, Rogers MT, Rønlund K, Rump A, Sánchez de Abajo AM, Shah PD, Sharif S, Side LE, Singer CF, Stadler Z, Steele L, Stoppa-Lyonnet D, Sutter C, Tan YY, Teixeira MR, Teulé A, Thull DL, Tischkowitz M, Toland AE, Tommasi S, Toss A, Trainer AH, Tripathi V, Valentini V, van Asperen CJ, Venturelli M, Viel A, Vijai J, Walker L, Wang-Gohrke S, Wappenschmidt B, Whaite A, Zanna I, Offit K, Thomassen M, Couch FJ, Schmutzler RK, Simard J, Easton DF, Chenevix-Trench G, Antoniou AC, and Ottini L

Subjects
Aged, 80 and over, BRCA1 Protein genetics, BRCA2 Protein genetics, Genetic Predisposition to Disease, Heterozygote, Humans, Male, Mutation, Polymorphism, Single Nucleotide, Risk Assessment, Risk Factors, Breast Neoplasms epidemiology, Breast Neoplasms genetics, Prostatic Neoplasms epidemiology, Prostatic Neoplasms genetics
Abstract

Background: Recent population-based female breast cancer and prostate cancer polygenic risk scores (PRS) have been developed. We assessed the associations of these PRS with breast and prostate cancer risks for male BRCA1 and BRCA2 pathogenic variant carriers., Methods: 483 BRCA1 and 1318 BRCA2 European ancestry male carriers were available from the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA). A 147-single nucleotide polymorphism (SNP) prostate cancer PRS (PRSPC) and a 313-SNP breast cancer PRS were evaluated. There were 3 versions of the breast cancer PRS, optimized to predict overall (PRSBC), estrogen receptor (ER)-negative (PRSER-), or ER-positive (PRSER+) breast cancer risk., Results: PRSER+ yielded the strongest association with breast cancer risk. The odds ratios (ORs) per PRSER+ standard deviation estimates were 1.40 (95% confidence interval [CI] =1.07 to 1.83) for BRCA1 and 1.33 (95% CI = 1.16 to 1.52) for BRCA2 carriers. PRSPC was associated with prostate cancer risk for BRCA1 (OR = 1.73, 95% CI = 1.28 to 2.33) and BRCA2 (OR = 1.60, 95% CI = 1.34 to 1.91) carriers. The estimated breast cancer odds ratios were larger after adjusting for female relative breast cancer family history. By age 85 years, for BRCA2 carriers, the breast cancer risk varied from 7.7% to 18.4% and prostate cancer risk from 34.1% to 87.6% between the 5th and 95th percentiles of the PRS distributions., Conclusions: Population-based prostate and female breast cancer PRS are associated with a wide range of absolute breast and prostate cancer risks for male BRCA1 and BRCA2 carriers. These findings warrant further investigation aimed at providing personalized cancer risks for male carriers and informing clinical management., (© The Author(s) 2021. Published by Oxford University Press.)

Published
2022
Full Text
View/download PDF

3. Height and Body Mass Index as Modifiers of Breast Cancer Risk in BRCA1/2 Mutation Carriers: A Mendelian Randomization Study.

Author

Qian F, Wang S, Mitchell J, McGuffog L, Barrowdale D, Leslie G, Oosterwijk JC, Chung WK, Evans DG, Engel C, Kast K, Aalfs CM, Adank MA, Adlard J, Agnarsson BA, Aittomäki K, Alducci E, Andrulis IL, Arun BK, Ausems MGEM, Azzollini J, Barouk-Simonet E, Barwell J, Belotti M, Benitez J, Berger A, Borg A, Bradbury AR, Brunet J, Buys SS, Caldes T, Caligo MA, Campbell I, Caputo SM, Chiquette J, Claes KBM, Margriet Collée J, Couch FJ, Coupier I, Daly MB, Davidson R, Diez O, Domchek SM, Donaldson A, Dorfling CM, Eeles R, Feliubadaló L, Foretova L, Fowler J, Friedman E, Frost D, Ganz PA, Garber J, Garcia-Barberan V, Glendon G, Godwin AK, Gómez Garcia EB, Gronwald J, Hahnen E, Hamann U, Henderson A, Hendricks CB, Hopper JL, Hulick PJ, Imyanitov EN, Isaacs C, Izatt L, Izquierdo Á, Jakubowska A, Kaczmarek K, Kang E, Karlan BY, Kets CM, Kim SW, Kim Z, Kwong A, Laitman Y, Lasset C, Hyuk Lee M, Won Lee J, Lee J, Lester J, Lesueur F, Loud JT, Lubinski J, Mebirouk N, Meijers-Heijboer HEJ, Meindl A, Miller A, Montagna M, Mooij TM, Morrison PJ, Mouret-Fourme E, Nathanson KL, Neuhausen SL, Nevanlinna H, Niederacher D, Nielsen FC, Nussbaum RL, Offit K, Olah E, Ong KR, Ottini L, Park SK, Peterlongo P, Pfeiler G, Phelan CM, Poppe B, Pradhan N, Radice P, Ramus SJ, Rantala J, Robson M, Rodriguez GC, Schmutzler RK, Hutten Selkirk CG, Shah PD, Simard J, Singer CF, Sokolowska J, Stoppa-Lyonnet D, Sutter C, Yen Tan Y, Teixeira RM, Teo SH, Terry MB, Thomassen M, Tischkowitz M, Toland AE, Tucker KM, Tung N, van Asperen CJ, van Engelen K, van Rensburg EJ, Wang-Gohrke S, Wappenschmidt B, Weitzel JN, Yannoukakos D, Greene MH, Rookus MA, Easton DF, Chenevix-Trench G, Antoniou AC, Goldgar DE, Olopade OI, Rebbeck TR, and Huo D

Subjects
Adult, Breast Neoplasms pathology, Female, Genetic Predisposition to Disease, Humans, Polymorphism, Single Nucleotide, Prognosis, Risk Factors, BRCA1 Protein genetics, BRCA2 Protein genetics, Body Height, Body Mass Index, Breast Neoplasms etiology, Mendelian Randomization Analysis, Mutation
Abstract

Background: BRCA1/2 mutations confer high lifetime risk of breast cancer, although other factors may modify this risk. Whether height or body mass index (BMI) modifies breast cancer risk in BRCA1/2 mutation carriers remains unclear., Methods: We used Mendelian randomization approaches to evaluate the association of height and BMI on breast cancer risk, using data from the Consortium of Investigators of Modifiers of BRCA1/2 with 14 676 BRCA1 and 7912 BRCA2 mutation carriers, including 11 451 cases of breast cancer. We created a height genetic score using 586 height-associated variants and a BMI genetic score using 93 BMI-associated variants. We examined both observed and genetically determined height and BMI with breast cancer risk using weighted Cox models. All statistical tests were two-sided., Results: Observed height was positively associated with breast cancer risk (HR = 1.09 per 10 cm increase, 95% confidence interval [CI] = 1.0 to 1.17; P = 1.17). Height genetic score was positively associated with breast cancer, although this was not statistically significant (per 10 cm increase in genetically predicted height, HR = 1.04, 95% CI = 0.93 to 1.17; P = .47). Observed BMI was inversely associated with breast cancer risk (per 5 kg/m2 increase, HR = 0.94, 95% CI = 0.90 to 0.98; P = .007). BMI genetic score was also inversely associated with breast cancer risk (per 5 kg/m2 increase in genetically predicted BMI, HR = 0.87, 95% CI = 0.76 to 0.98; P = .02). BMI was primarily associated with premenopausal breast cancer., Conclusion: Height is associated with overall breast cancer and BMI is associated with premenopausal breast cancer in BRCA1/2 mutation carriers. Incorporating height and BMI, particularly genetic score, into risk assessment may improve cancer management., (© The Author(s) 2018. Published by Oxford University Press. All rights reserved. For permissions, please email: journals.permissions@oup.com.)

Published
2019
Full Text
View/download PDF

4. The incidence and mortality of acute thoracic aortic dissection: results from a whole nation study.

Author

Melvinsdottir IH, Lund SH, Agnarsson BA, Sigvaldason K, Gudbjartsson T, and Geirsson A

Subjects
Age Factors, Aged, Aortic Dissection mortality, Aortic Dissection surgery, Aortic Aneurysm, Thoracic mortality, Aortic Aneurysm, Thoracic surgery, Female, Humans, Incidence, Ireland epidemiology, Kaplan-Meier Estimate, Male, Proportional Hazards Models, Retrospective Studies, Sex Factors, Survival Analysis, Aortic Dissection epidemiology, Aortic Aneurysm, Thoracic epidemiology
Abstract

Objectives: Acute thoracic aortic dissection (ATAD) is a devastating condition associated with a high mortality rate. Recent reports suggest that its incidence is rising. Utilizing nationwide data comprising the whole Icelandic population, we aimed to determine the incidence, mortality rate and time-dependent mortality risk of ATAD., Methods: Data were retrospectively collected using centralized hospital discharge registries, autopsy records and Cause of Death Registry in Iceland from 1992 to 2013., Results: Age- and gender-adjusted incidence of ATAD was 2.53/100 000/year, and no significant change in incidence was observed during the study period. The mean age was 66.9 ± 13.6 years and 66.0% (101/153) were Stanford type A. Of the whole group, 17.6% (27/153) died prior to hospital arrival, whereas the risk of death for patients who arrived alive to a hospital was 21.4% (27/126) within 24 h and 45.2% (57/126) at 30 days. During the course of the study, patients with type A dissection were more likely to undergo an operation and the management of type B dissection changed from open to endovascular repair. The 30-day mortality rate declined every year and the 5-year survival rate improved in the last third of the study., Conclusions: The incidence of ATAD was 2.53/100 000/year and remained constant throughout the study, contradicting recent perceptions of a rising incidence. ATAD, type A in particular, remains a highly lethal condition: Over half of all patients die within 30 days of the index event. A reduced 30-day mortality rate and an increased long-term survival rate indicate improved overall outcomes in patients with this complex condition., (© The Author 2016. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery. All rights reserved.)

Published
2016
Full Text
View/download PDF

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

Author

Meeks HD, Song H, Michailidou K, Bolla MK, Dennis J, Wang Q, Barrowdale D, Frost D, McGuffog L, Ellis S, Feng B, Buys SS, Hopper JL, Southey MC, Tesoriero A, James PA, Bruinsma F, Campbell IG, Broeks A, Schmidt MK, Hogervorst FB, Beckman MW, Fasching PA, Fletcher O, Johnson N, Sawyer EJ, Riboli E, Banerjee S, Menon U, Tomlinson I, Burwinkel B, Hamann U, Marme F, Rudolph A, Janavicius R, Tihomirova L, Tung N, Garber J, Cramer D, Terry KL, Poole EM, Tworoger SS, Dorfling CM, van Rensburg EJ, Godwin AK, Guénel P, Truong T, Stoppa-Lyonnet D, Damiola F, Mazoyer S, Sinilnikova OM, Isaacs C, Maugard C, Bojesen SE, Flyger H, Gerdes AM, Hansen TV, Jensen A, Kjaer SK, Hogdall C, Hogdall E, Pedersen IS, Thomassen M, Benitez J, González-Neira A, Osorio A, Hoya Mde L, Segura PP, Diez O, Lazaro C, Brunet J, Anton-Culver H, Eunjung L, John EM, Neuhausen SL, Ding YC, Castillo D, Weitzel JN, Ganz PA, Nussbaum RL, Chan SB, Karlan BY, Lester J, Wu A, Gayther S, Ramus SJ, Sieh W, Whittermore AS, Monteiro AN, Phelan CM, Terry MB, Piedmonte M, Offit K, Robson M, Levine D, Moysich KB, Cannioto R, Olson SH, Daly MB, Nathanson KL, Domchek SM, Lu KH, Liang D, Hildebrant MA, Ness R, Modugno F, Pearce L, Goodman MT, Thompson PJ, Brenner H, Butterbach K, Meindl A, Hahnen E, Wappenschmidt B, Brauch H, Brüning T, Blomqvist C, Khan S, Nevanlinna H, Pelttari LM, Aittomäki K, Butzow R, Bogdanova NV, Dörk T, Lindblom A, Margolin S, Rantala J, Kosma VM, Mannermaa A, Lambrechts D, Neven P, Claes KB, Maerken TV, Chang-Claude J, Flesch-Janys D, Heitz F, Varon-Mateeva R, Peterlongo P, Radice P, Viel A, Barile M, Peissel B, Manoukian S, Montagna M, Oliani C, Peixoto A, Teixeira MR, Collavoli A, Hallberg E, Olson JE, Goode EL, Hart SN, Shimelis H, Cunningham JM, Giles GG, Milne RL, Healey S, Tucker K, Haiman CA, Henderson BE, Goldberg MS, Tischkowitz M, Simard J, Soucy P, Eccles DM, Le N, Borresen-Dale AL, Kristensen V, Salvesen HB, Bjorge L, Bandera EV, Risch H, Zheng W, Beeghly-Fadiel A, Cai H, Pylkäs K, Tollenaar RA, Ouweland AM, Andrulis IL, Knight JA, Narod S, Devilee P, Winqvist R, Figueroa J, Greene MH, Mai PL, Loud JT, García-Closas M, Schoemaker MJ, Czene K, Darabi H, McNeish I, Siddiquil N, Glasspool R, Kwong A, Park SK, Teo SH, Yoon SY, Matsuo K, Hosono S, Woo YL, Gao YT, Foretova L, Singer CF, Rappaport-Feurhauser C, Friedman E, Laitman Y, Rennert G, Imyanitov EN, Hulick PJ, Olopade OI, Senter L, Olah E, Doherty JA, Schildkraut J, Koppert LB, Kiemeney LA, Massuger LF, Cook LS, Pejovic T, Li J, Borg A, Öfverholm A, Rossing MA, Wentzensen N, Henriksson K, Cox A, Cross SS, Pasini BJ, Shah M, Kabisch M, Torres D, Jakubowska A, Lubinski J, Gronwald J, Agnarsson BA, Kupryjanczyk J, Moes-Sosnowska J, Fostira F, Konstantopoulou I, Slager S, Jones M, Antoniou AC, Berchuck A, Swerdlow A, Chenevix-Trench G, Dunning AM, Pharoah PD, Hall P, Easton DF, Couch FJ, Spurdle AB, and Goldgar DE

Subjects
Adult, Aged, Female, Genetic Predisposition to Disease, Heterozygote, Humans, Logistic Models, Lysine genetics, Male, Middle Aged, Neoplasm Invasiveness, Odds Ratio, Ovarian Neoplasms pathology, Risk Assessment, Risk Factors, BRCA2 Protein genetics, Breast Neoplasms genetics, Codon, Terminator, Ovarian Neoplasms genetics, Polymorphism, Single Nucleotide, Prostatic Neoplasms genetics
Abstract

Background: The K3326X variant in BRCA2 (BRCA2*c.9976A>T; p.Lys3326*; rs11571833) has been found to be associated with small increased risks of breast cancer. However, it is not clear to what extent linkage disequilibrium with fully pathogenic mutations might account for this association. There is scant information about the effect of K3326X in other hormone-related cancers., Methods: Using weighted logistic regression, we analyzed data from the large iCOGS study including 76 637 cancer case patients and 83 796 control patients to estimate odds ratios (ORw) and 95% confidence intervals (CIs) for K3326X variant carriers in relation to breast, ovarian, and prostate cancer risks, with weights defined as probability of not having a pathogenic BRCA2 variant. Using Cox proportional hazards modeling, we also examined the associations of K3326X with breast and ovarian cancer risks among 7183 BRCA1 variant carriers. All statistical tests were two-sided., Results: The K3326X variant was associated with breast (ORw = 1.28, 95% CI = 1.17 to 1.40, P = 5.9x10(-) (6)) and invasive ovarian cancer (ORw = 1.26, 95% CI = 1.10 to 1.43, P = 3.8x10(-3)). These associations were stronger for serous ovarian cancer and for estrogen receptor-negative breast cancer (ORw = 1.46, 95% CI = 1.2 to 1.70, P = 3.4x10(-5) and ORw = 1.50, 95% CI = 1.28 to 1.76, P = 4.1x10(-5), respectively). For BRCA1 mutation carriers, there was a statistically significant inverse association of the K3326X variant with risk of ovarian cancer (HR = 0.43, 95% CI = 0.22 to 0.84, P = .013) but no association with breast cancer. No association with prostate cancer was observed., Conclusions: Our study provides evidence that the K3326X variant is associated with risk of developing breast and ovarian cancers independent of other pathogenic variants in BRCA2. Further studies are needed to determine the biological mechanism of action responsible for these associations., (© The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.)

Published
2015
Full Text
View/download PDF

6. Genetic variation at 9p22.2 and ovarian cancer risk for BRCA1 and BRCA2 mutation carriers.

Author

Ramus SJ, Kartsonaki C, Gayther SA, Pharoah PD, Sinilnikova OM, Beesley J, Chen X, McGuffog L, Healey S, Couch FJ, Wang X, Fredericksen Z, Peterlongo P, Manoukian S, Peissel B, Zaffaroni D, Roversi G, Barile M, Viel A, Allavena A, Ottini L, Papi L, Gismondi V, Capra F, Radice P, Greene MH, Mai PL, Andrulis IL, Glendon G, Ozcelik H, Thomassen M, Gerdes AM, Kruse TA, Cruger D, Jensen UB, Caligo MA, Olsson H, Kristoffersson U, Lindblom A, Arver B, Karlsson P, Stenmark Askmalm M, Borg A, Neuhausen SL, Ding YC, Nathanson KL, Domchek SM, Jakubowska A, Lubiński J, Huzarski T, Byrski T, Gronwald J, Górski B, Cybulski C, Dębniak T, Osorio A, Durán M, Tejada MI, Benítez J, Hamann U, Rookus MA, Verhoef S, Tilanus-Linthorst MA, Vreeswijk MP, Bodmer D, Ausems MG, van Os TA, Asperen CJ, Blok MJ, Meijers-Heijboer HE, Peock S, Cook M, Oliver C, Frost D, Dunning AM, Evans DG, Eeles R, Pichert G, Cole T, Hodgson S, Brewer C, Morrison PJ, Porteous M, Kennedy MJ, Rogers MT, Side LE, Donaldson A, Gregory H, Godwin A, Stoppa-Lyonnet D, Moncoutier V, Castera L, Mazoyer S, Barjhoux L, Bonadona V, Leroux D, Faivre L, Lidereau R, Nogues C, Bignon YJ, Prieur F, Collonge-Rame MA, Venat-Bouvet L, Fert-Ferrer S, Miron A, Buys SS, Hopper JL, Daly MB, John EM, Terry MB, Goldgar D, Hansen Tv, Jønson L, Ejlertsen B, Agnarsson BA, Offit K, Kirchhoff T, Vijai J, Dutra-Clarke AV, Przybylo JA, Montagna M, Casella C, Imyanitov EN, Janavicius R, Blanco I, Lázaro C, Moysich KB, Karlan BY, Gross J, Beattie MS, Schmutzler R, Wappenschmidt B, Meindl A, Ruehl I, Fiebig B, Sutter C, Arnold N, Deissler H, Varon-Mateeva R, Kast K, Niederacher D, Gadzicki D, Caldes T, de la Hoya M, Nevanlinna H, Aittomäki K, Simard J, Soucy P, Spurdle AB, Holland H, Chenevix-Trench G, Easton DF, and Antoniou AC

Subjects
Adult, Aged, Aged, 80 and over, Alleles, Female, Genotype, Humans, Likelihood Functions, Middle Aged, Odds Ratio, Retrospective Studies, Risk Factors, Chromosomes, Human, Pair 9 genetics, Genes, BRCA1, Genes, BRCA2, Germ-Line Mutation, Heterozygote, Ovarian Neoplasms genetics, Polymorphism, Single Nucleotide
Abstract

Background: Germline mutations in the BRCA1 and BRCA2 genes are associated with increased risks of breast and ovarian cancers. Although several common variants have been associated with breast cancer susceptibility in mutation carriers, none have been associated with ovarian cancer susceptibility. A genome-wide association study recently identified an association between the rare allele of the single-nucleotide polymorphism (SNP) rs3814113 (ie, the C allele) at 9p22.2 and decreased risk of ovarian cancer for women in the general population. We evaluated the association of this SNP with ovarian cancer risk among BRCA1 or BRCA2 mutation carriers by use of data from the Consortium of Investigators of Modifiers of BRCA1/2., Methods: We genotyped rs3814113 in 10,029 BRCA1 mutation carriers and 5837 BRCA2 mutation carriers. Associations with ovarian and breast cancer were assessed with a retrospective likelihood approach. All statistical tests were two-sided., Results: The minor allele of rs3814113 was associated with a reduced risk of ovarian cancer among BRCA1 mutation carriers (per-allele hazard ratio of ovarian cancer = 0.78, 95% confidence interval = 0.72 to 0.85; P = 4.8 × 10(-9)) and BRCA2 mutation carriers (hazard ratio of ovarian cancer = 0.78, 95% confidence interval = 0.67 to 0.90; P = 5.5 × 10(-4)). This SNP was not associated with breast cancer risk among either BRCA1 or BRCA2 mutation carriers. BRCA1 mutation carriers with the TT genotype at SNP rs3814113 were predicted to have an ovarian cancer risk to age 80 years of 48%, and those with the CC genotype were predicted to have a risk of 33%., Conclusion: Common genetic variation at the 9p22.2 locus was associated with decreased risk of ovarian cancer for carriers of a BRCA1 or BRCA2 mutation.

Published
2011
Full Text
View/download PDF

7. Enhanced B cell survival in familial macroglobulinaemia is associated with increased expression of Bcl-2.

Author

Ogmundsdóttir HM, Sveinsdóttir S, Sigfússon A, Skaftadóttir I, Jónasson JG, and Agnarsson BA

Subjects
B-Lymphocyte Subsets immunology, Cell Survival immunology, Cells, Cultured, Dose-Response Relationship, Immunologic, Flow Cytometry, Humans, Immunoglobulins biosynthesis, Immunohistochemistry, Lymph Nodes chemistry, Lymph Nodes metabolism, Lymphocyte Activation, Pokeweed Mitogens pharmacology, Proto-Oncogene Proteins c-bcl-2 chemistry, T-Lymphocyte Subsets immunology, Time Factors, Waldenstrom Macroglobulinemia metabolism, B-Lymphocyte Subsets metabolism, B-Lymphocyte Subsets pathology, Proto-Oncogene Proteins c-bcl-2 biosynthesis, Waldenstrom Macroglobulinemia immunology, Waldenstrom Macroglobulinemia pathology
Abstract

A family with three cases of macroglobulinaemia of undetermined significance (MGUS), and one case each of immunoblastic lymphoma, Waldentröm's macroglobulinaemia and multiple myeloma was first described 20 years ago. We have previously identified 10 out of 35 healthy family members tested whose lymphocytes produced abnormally high amounts of immunoglobulins in culture. In the present study lymphocyte subpopulations of these hyper-responders have been further characterized and lymphocyte reactivity and survival in vitro have been studied. No differences were detected in the proportions of resting B lymphocytes (CD19+) co-expressing CD5, CD10, CD11b, or CD38, and the CD4/CD8 ratio of T cells was normal before and after stimulation with pokeweed mitogen (PWM). The initial rate of response in terms of immunoglobulin production was not increased, but immunoglobulin levels continued to rise during the second week of culture whereas the production peaked at 8 days in control cultures. This was associated with significantly greater survival of lymphocytes and at 14 days surviving B cells could only be identified in samples from hyper-responders. A lymph node removed because of tuberculosis from a family member 23 years before the diagnosis of multiple myeloma showed very marked Bcl-2 expression in a B cell follicle. This was not seen in a tuberculous lymph node from an unrelated subject. Stimulated cultures from three hyper-responders tested demonstrated significantly higher retention of Bcl-2 in B cells compared with one family control and six unrelated controls. We conclude that the increased production of immunoglobulins previously observed in this family with an inherited tendency for benign and malignant B cell proliferation is the result of enhanced B cell survival, which is associated with increased expression of Bcl-2 following stimulation.

Published
1999
Full Text
View/download PDF

8. An unusual B-cell lymphoma simulating hairy cell leukemia.

Author

Agnarsson BA and Kadin ME

Subjects
Aged, Antibodies, Monoclonal, Biomarkers, Tumor immunology, Bone Marrow pathology, Humans, Leukemia, Hairy Cell pathology, Lymph Nodes pathology, Lymphoma pathology, Male, Spleen pathology, B-Lymphocytes, Leukemia, Hairy Cell diagnosis, Lymphoma diagnosis
Abstract

The authors report an unusual B-cell lymphoma that simulated hairy cell leukemia (HCL) not only clinically but also pathologically in peripheral blood, bone marrow, and lymph node specimens. A diagnosis of lymphoma could be made only after pathologic examination of the spleen, indicating that caution should be exercised in making a primary diagnosis of HCL on bone marrow examination. Morphologically this lymphoma resembled monocytoid B-cell lymphoma (MBCL) but the immunophenotype (monoclonal Ig-kappa +, Ia+, B4+, Leu-1+, LN-2+, lambda-, Bl-, LN-1- and CALLA-) and clinical findings were more consistent with mantle zone lymphoma (MZL). Because this case demonstrates features of both MBCL and MZL, the authors suggest that these two entities may have a common histogenesis.

Published
1987
Full Text
View/download PDF

9. Coronary atherosclerosis and myocardial infarction in nonagenarians: a retrospective autopsy study.

Author

Jónsson A, Agnarsson BA, and Hallgrímsson J

Subjects
Aged, Autopsy, Coronary Disease pathology, Epidemiologic Methods, Female, Humans, Iceland, Male, Myocardial Infarction pathology, Retrospective Studies, Sex Factors, Aging, Coronary Disease epidemiology, Myocardial Infarction epidemiology
Abstract

Autopsy records of two groups of persons, aged 90 years and older and 70 years and younger, were analysed for coronary atherosclerosis and myocardial infarction. In each group were 74 males and 140 females who died during 1951-1980. In nonagenarians, moderate and severe degrees of coronary atherosclerosis were more frequent, but myocardial infarction both new and old was less frequent when compared with those aged 70 and younger. The sex difference in the degree of coronary stenosis within each age group was small but the frequency of myocardial infarction was less in females in both age groups.

Published
1985
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results