RESUMO
PURPOSE: This study seeks to contribute real-world data on the prevalence of BRCA1/2 and HRR gene mutations in prostate cancer. METHODS: We compiled sequencing data of 197 cases of primary and metastatic prostate cancer, in which HRR mutation analysis was performed upon clinical request within the last 5 years. All cases were analyzed using a targeted NGS BRCAness multigene panel, including 8 HRR genes (ATM, BRCA1, BRCA2, CDK12, CHEK2, FANCA, HDAC2, PALB2). RESULTS: Our findings reveal a prevalence of potentially targetable mutations based on FDA criteria of 20.8%, which is comparable to the literature. However, the frequency of targetable BRCA2 mutations within our cohort was lower than reported for mCRPC and ATM and CHEK2 mutations were more prevalent instead. Thus, while 20.8% (n = 38) of the cases meet the criteria for olaparib treatment per FDA approval, only 4.9% (n = 9) align with the eligibility criteria according to the EMA approval. CONCLUSION: This study offers valuable real-world insights into the landscape of BRCA1/2 and HRR gene mutations and the practical clinical management of HRR gene testing in prostate cancer, contributing to a better understanding of patient eligibility for PARPi treatment.
Assuntos
Mutação , Neoplasias de Próstata Resistentes à Castração , Humanos , Masculino , Neoplasias de Próstata Resistentes à Castração/genética , Neoplasias de Próstata Resistentes à Castração/tratamento farmacológico , Neoplasias de Próstata Resistentes à Castração/patologia , Idoso , Pessoa de Meia-Idade , Proteína BRCA2/genética , Genes BRCA2 , Proteína BRCA1/genética , Genes BRCA1 , Metástase Neoplásica , Idoso de 80 Anos ou mais , PrevalênciaRESUMO
A total of 271 young Pakistani adults responded to a selfdesigned multiple choice-based questionnaire (α = 0.83) which was then used to assess the levels of knowledge regarding breast cancer susceptibility (BRCA) gene mutation. Overall knowledge levels were assessed using the sum score of each response; any possible significance between knowledge scores and educational backgrounds as well as gender were also tested. The results show that 161 (63.9%) of the sample population had awareness about BRCA gene mutation. Knowledge scores were comparable across both groups (medical and non-medical educational backgrounds) with 20 (13.8%) of medical and 14 (13.5%) of non-medical respondents demonstrating a high level of knowledge about the BRCA gene mutation and its testing. Neither gender nor educational background had a significant influence on knowledge scores. The results from this report suggest that awareness regarding BRCA gene was adequate, while knowledge levels were noted to be poor among the sample population.
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Genes BRCA1 , Predisposição Genética para Doença , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Feminino , Paquistão , Masculino , Adulto , Adulto Jovem , Neoplasias da Mama/genética , Genes BRCA2 , Inquéritos e Questionários , Escolaridade , Mutação , Adolescente , Testes GenéticosRESUMO
Annotating genomic sequence alterations is sometimes a difficult decision, particularly in missense variants with uncertain pathogenic significance and also in those presumed as germline pathogenic variants. We here suggest that mutation spectrum may also be useful for judging them. From the public databases, 982 BRCA1/1861 BRCA2 germline missense variants and 294 BRCA1/420 BRCA2 somatic missense variants were obtained. We then compared their mutation spectra, i.e., the frequencies of two transition- and four transversion-type mutations, in each category. Intriguingly, in BRCA1 variants, A:T to C:G transversion, which was relatively frequent in the germline, was extremely rare in somatic, particularly breast cancer, cells (p = .03). Conversely, A:T to T:A transversion was most infrequent in the germline, but not rare in somatic cells. Thus, BRCA1 variants with A:T to T:A transversion may be suspected as somatic, and those with A:T to C:G as being in the germline. These tendencies of mutation spectrum may also suggest the biological and chemical origins of the base alterations. On the other hand, unfortunately, variants of uncertain significance (VUS) were not distinguishable by mutation spectrum. Our findings warrant further and more detailed studies.
Assuntos
Neoplasias da Mama , Mutação em Linhagem Germinativa , Neoplasias Ovarianas , Humanos , Feminino , Neoplasias da Mama/genética , Mutação em Linhagem Germinativa/genética , Neoplasias Ovarianas/genética , Proteína BRCA1/genética , Proteína BRCA2/genética , Mutação de Sentido Incorreto , Genes BRCA1 , Genes BRCA2RESUMO
OBJECTIVES: Women who inherit a pathogenic BRCA1 or BRCA2 mutation are at substantially higher risk of developing breast and ovarian cancer than average. Several cancer risk management strategies exist to address this increased risk. Decisions about which strategies to choose are complex, personal and multifactorial for these women. Decision aids (DAs) are tools that assist patients in making health-related decisions. The aim of this scoping review was to map evidence relating to the development and testing of patient DAs for cancer unaffected BRCA mutation carriers. DESIGN: Scoping review conducted according to the Joanna Briggs Institute's (JBI's) scoping review methodological framework. DATA SOURCES: MEDLINE, EMBASE, CINAHL, Web of Science. No restrictions applied for language or publication date. A manual search was also performed. ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Studies on DAs for cancer risk management designed for or applicable to women with a pathogenic BRCA1 or BRCA2 mutation who are unaffected by breast or ovarian cancer. DATA EXTRACTION AND SYNTHESIS: Data were extracted using a form based on the JBI instrument for extracting details of studies' characteristics and results. Data extraction was performed independently by two reviewers. Extracted data were tabulated. RESULTS: 32 evidence sources relating to development or testing of 21 DAs were included. Four DAs were developed exclusively for cancer unaffected BRCA mutation carriers. Of these, two covered all guideline recommended risk management strategies for this population though only one of these was readily available publicly in its full version. All studies investigating DA effectiveness reported a positive effect of the DA under investigation on at least one of the outcomes evaluated, however only six DAs were tested in randomised controlled trials. CONCLUSION: This scoping review has mapped the landscape of the literature relating to developing and testing, DAs applicable to cancer unaffected BRCA mutation carriers.
Assuntos
Neoplasias da Mama , Técnicas de Apoio para a Decisão , Mutação , Neoplasias Ovarianas , Humanos , Feminino , Neoplasias Ovarianas/genética , Neoplasias da Mama/genética , Proteína BRCA2/genética , Heterozigoto , Predisposição Genética para Doença , Tomada de Decisões , Proteína BRCA1/genética , Genes BRCA2 , Genes BRCA1RESUMO
OBJECTIVES: To assess the association of socioeconomic demographics with recommendation for and uptake of risk-reducing bilateral salpingo-oophorectomy (rrBSO) in patients with BRCA1 and BRCA2 (BRCA1/2) mutations. DESIGN: Retrospective cohort, semistructured qualitative interviews. SETTING AND PARTICIPANTS: BRCA1/2 mutation carriers at an urban, public hospital with a racially and socioeconomically diverse population. INTERVENTION: None. PRIMARY AND SECONDARY OUTCOMES: The primary outcomes were rate of rrBSO recommendation and completion. Secondary outcomes were sociodemographic variables associated with rrBSO completion. RESULTS: The cohort included 167 patients with BRCA1/2 mutations of whom 39% identified as black (n=65), 35% white (n=59) and 19% Hispanic (n=32). Over 95% (n=159) received the recommendation for age-appropriate rrBSO, and 52% (n=87) underwent rrBSO. Women who completed rrBSO were older in univariable analysis (p=0.05), but not in multivariable analysis. Completion of rrBSO was associated with residence in zip codes with lower unemployment and documented recommendation for rrBSO (p<0.05). All subjects who still received care in the health system (n=79) were invited to complete interviews regarding rrBSO decision-making, but only four completed surveys for a response rate of 5.1%. Themes that emerged included menopause, emotional impact and familial support. CONCLUSIONS: In this understudied population, genetic counselling and surrogates of financial health were associated with rrBSO uptake, highlighting genetics referrals and addressing social determinants of health as opportunities to improve cancer prevention and reduce health inequities. Our study demonstrates a need for more culturally centred recruiting methods for qualitative research in marginalised communities to ensure adequate representation in the literature regarding rrBSO.
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Hospitais Públicos , Neoplasias Ovarianas , Salpingo-Ooforectomia , Humanos , Feminino , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto , Neoplasias Ovarianas/genética , Neoplasias Ovarianas/prevenção & controle , Hospitais Urbanos , Mutação , Genes BRCA1 , Genes BRCA2 , Fatores Socioeconômicos , Pesquisa Qualitativa , Proteína BRCA1/genética , Proteína BRCA2/genética , Predisposição Genética para DoençaRESUMO
Purpose: Breastfeeding is associated with numerous short- and long-term neonatal and maternal health benefits. Specifically, in BRCA1/2 female carriers, breastfeeding has been shown to reduce the considerably increased risks of breast and ovarian cancer. Nevertheless, there is paucity of data referring to the recommended postpartum surveillance of BRCA1/2 carriers. The purpose of this study was to evaluate the recommendations of health professionals regarding breastfeeding in BRCA carriers. Methods: This cross-sectional survey was conducted using an anonymous questionnaire distributed through the "Good BRCA Genes-a support and information group for BRCA carriers" association. The questionnaire included Likert scale and open-ended questions, aimed to evaluate the performance of health professionals at various aspects of the recommended follow-up. Results: Of the 388 participants, 233 (60.0%) expressed dissatisfaction with explanations provided by health professionals regarding pregnancy and breastfeeding. Women reporting dissatisfaction with explanations were younger (36.8 ± 7.0 years) compared to those satisfied with the explanations (38.8 ± 7.6 years, p = 0.0081). No significant differences were noted between women satisfied and those dissatisfied with the explanations in terms of age of genetic diagnosis, origin, religion, geographic location, and the rates of personal or familial cancer history. Of the 175 responses to an open question "please describe the reasons for unsatisfactory explanation," 76.6% stated they received no explanation on the subject, whereas 5.4% described minimal explanation or conflicting recommendations. Surprisingly, 4.7% recalled being advised to avoid, stop, or limit breastfeeding. Discussion: The results of this survey emphasize the lack of knowledge of health professionals on the issue of breastfeeding in BRCA carriers. As genetic variants in these genes involve significant proportion of the population (up to 2.5% in Ashkenazi Jewish population), raising the awareness of health care personnel to the benefits of breastfeeding in these women seems prudent.
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Aleitamento Materno , Neoplasias da Mama , Pessoal de Saúde , Humanos , Feminino , Aleitamento Materno/psicologia , Estudos Transversais , Adulto , Inquéritos e Questionários , Neoplasias da Mama/genética , Neoplasias da Mama/prevenção & controle , Pessoal de Saúde/psicologia , Gravidez , Heterozigoto , Neoplasias Ovarianas/genética , Neoplasias Ovarianas/prevenção & controle , Proteína BRCA1/genética , Genes BRCA2 , Genes BRCA1 , Predisposição Genética para Doença , Proteína BRCA2/genética , Pessoa de Meia-Idade , Conhecimentos, Atitudes e Prática em SaúdeRESUMO
INTRODUCTION: Given the significance of healthcare decisions in women with BRCA1 and BRCA2 mutations and their impact on patients' lives, this study aims to map the existing literature on decision regret in women with BRCA1 and BRCA2 mutations. METHODS: A scoping review was conducted in the following databases: PubMed, Embase, Scopus, CINAHL, Cochrane, and Google Scholar. Inclusion criteria focused on decision regret in the female population with BRCA1 and/or BRCA2 mutations, with no restrictions on the methodologies of the included studies, but only in the English language. The selection process led to the inclusion of 13 studies. RESULTS: The analysis revealed a significant trend toward decision regret among patients facing complex medical choices. The quality of healthcare communication, decision support, and genetic counselling emerged as key factors influencing patients' perceptions and experiences, with direct implications for their quality of life and psychological well-being. The results suggest that these decisions considerably impact patients, both in terms of clinical outcomes and emotional experiences. DISCUSSION: The investigation highlights the vital importance of a personalized care approach, emphasizing the critical role of managing patients' emotional and psychological complexity. Managing decision regret requires acute attention to individual needs and effective communication to mitigate emotional impact and improve patient outcomes. CONCLUSIONS: Insights from a nursing perspective in the analysis of results indicate the need for informed, empathetic, and integrated care that considers the emotional complexity of women with BRCA1 and/or BRCA2 mutations in their lives and health choices.
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Proteína BRCA1 , Proteína BRCA2 , Neoplasias da Mama , Tomada de Decisões , Emoções , Mutação , Qualidade de Vida , Humanos , Feminino , Proteína BRCA1/genética , Proteína BRCA2/genética , Neoplasias da Mama/genética , Neoplasias da Mama/psicologia , Aconselhamento Genético/psicologia , Aconselhamento Genético/métodos , Genes BRCA1 , Comunicação , Técnicas de Apoio para a Decisão , Genes BRCA2RESUMO
Hereditary breast cancers are manifested by pathogenic and likely pathogenic genetic mutations. Penetrance expresses the breast cancer risk associated with these genetic mutations. Although BRCA1/2 are the most widely known genetic mutations associated with breast cancer, numerous additional genes demonstrate high and moderate penetrance for breast cancer. This review describes current genetic testing, details the specific high and moderate penetrance genes for breast cancer and reviews the current approach to screening for breast cancer in patients with these genetic mutations.
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Neoplasias da Mama , Predisposição Genética para Doença , Testes Genéticos , Mutação , Humanos , Neoplasias da Mama/genética , Neoplasias da Mama/diagnóstico por imagem , Feminino , Testes Genéticos/métodos , Genes BRCA1 , Proteína BRCA1/genética , Genes BRCA2 , Penetrância , Proteína BRCA2/genéticaAssuntos
Neoplasias da Mama , Predisposição Genética para Doença , Segunda Neoplasia Primária , Adulto , Feminino , Humanos , Neoplasias da Mama/epidemiologia , Neoplasias da Mama/genética , Neoplasias da Mama/terapia , Genes BRCA1 , Segunda Neoplasia Primária/genética , Segunda Neoplasia Primária/epidemiologia , RiscoRESUMO
OBJECTIVE: To investigate the role of BRCA1/2 mutations in early ovarian cancer (eOC) (International Federation of Gynecology and Obstetrics FIGO 2014 stage I-II), and its impact on prognosis after relapse. METHODS: In this multicenter retrospective study, clinical and survival data from high-grade serous (HGS)-eOC patients at presentation and recurrence were compared according to BRCA status: BRCA-mutated (BRCAmut) vs. BRCA wild-type (BRCAwt). RESULTS: Among 191 HGS-eOC patients, 89 were BRCAmut and 102 BRCAwt. There was no significant difference according to the BRCA status in terms of Progression-Free Survival (PFS). A longer Overall Survival (OS) was found in BRCAmut patients. Stage I patients had significantly improved PFS vs stage II, regardless of BRCA status. At multivariate analysis, stage at diagnosis was the only variable with a significant effect on PFS. No factors were significantly relevant on OS, albeit younger age and BRCA mutation showed a slight impact. Post-Recurrence Survival (PRS) in the BRCAmut population was significantly improved compared with BRCAwt. At multivariate analysis, Secondary Cytoreductive Surgery was the strongest predictor for longer PRS, followed by PARPi maintenance at recurrence. CONCLUSIONS: BRCA-status is not a prognostic factor in early ovarian cancer regarding PFS. However, our data suggest a better prognosis after relapse in BRCAm population.
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Cistadenocarcinoma Seroso , Mutação , Estadiamento de Neoplasias , Neoplasias Ovarianas , Humanos , Feminino , Neoplasias Ovarianas/genética , Neoplasias Ovarianas/patologia , Neoplasias Ovarianas/mortalidade , Neoplasias Ovarianas/terapia , Pessoa de Meia-Idade , Estudos Retrospectivos , Idoso , Adulto , Cistadenocarcinoma Seroso/genética , Cistadenocarcinoma Seroso/patologia , Cistadenocarcinoma Seroso/mortalidade , Cistadenocarcinoma Seroso/terapia , Proteína BRCA1/genética , Gradação de Tumores , Idoso de 80 Anos ou mais , Proteína BRCA2/genética , Genes BRCA1 , Recidiva Local de Neoplasia/genética , Recidiva Local de Neoplasia/patologia , Genes BRCA2 , Intervalo Livre de Progressão , PrognósticoRESUMO
OBJECTIVE: The majority of high-grade serous carcinomas (HGSC) of the ovary, fallopian tube, and peritoneum arise from the precursor lesion called serous tubal intraepithelial carcinoma (STIC). It has been postulated that cells from STICs exfoliate into the peritoneal cavity and give rise to peritoneal HGSC several years later. While co-existent STICs and HGSCs have been reported to share similarities in their mutational profiles, clonal relationship between temporally distant STICs and HGSCs have been infrequently studied and the natural history of STICs remains poorly understood. METHODS: We performed focused searches in two national databases from the Netherlands and identified a series of BRCA1/2 germline pathogenic variant (GPV) carriers (n = 7) who had STIC, and no detectable invasive carcinoma, at the time of their risk-reducing salpingo-oophorectomy (RRSO), and later developed peritoneal HGSC. The clonal relationship between these STICs and HGSCs was investigated by comparing their genetic mutational profile by performing next-generation targeted sequencing. RESULTS: Identical pathogenic mutations and loss of heterozygosity of TP53 were identified in the STICs and HGSCs of five of the seven patients (71%), confirming the clonal relationship of the lesions. Median interval for developing HGSC after RRSO was 59 months (range: 24-118 months). CONCLUSION: Our results indicate that cells from STIC can shed into the peritoneal cavity and give rise to HGSC after long lag periods in BRCA1/2 GPV carriers, and argues in favor of the hypothesis that STIC lesions may metastasize.
Assuntos
Cistadenocarcinoma Seroso , Neoplasias das Tubas Uterinas , Neoplasias Ovarianas , Salpingo-Ooforectomia , Humanos , Feminino , Neoplasias das Tubas Uterinas/genética , Neoplasias das Tubas Uterinas/patologia , Neoplasias das Tubas Uterinas/cirurgia , Neoplasias das Tubas Uterinas/prevenção & controle , Cistadenocarcinoma Seroso/genética , Cistadenocarcinoma Seroso/patologia , Cistadenocarcinoma Seroso/cirurgia , Cistadenocarcinoma Seroso/prevenção & controle , Pessoa de Meia-Idade , Neoplasias Ovarianas/genética , Neoplasias Ovarianas/patologia , Neoplasias Ovarianas/cirurgia , Neoplasias Ovarianas/prevenção & controle , Adulto , Neoplasias Peritoneais/genética , Neoplasias Peritoneais/patologia , Carcinoma in Situ/genética , Carcinoma in Situ/patologia , Carcinoma in Situ/cirurgia , Mutação em Linhagem Germinativa , Genes BRCA2 , Proteína BRCA2/genética , Proteína BRCA1/genética , Genes BRCA1RESUMO
OBJECTIVE: The aim of this study was to describe the long-term outcome of asymptomatic BRCA1/2 germline pathogenic variant (GPV) carriers with high-grade serous carcinoma (HGSC) in their risk-reducing salpingo-oophorectomy (RRSO) specimen. METHODS: In a previously described cohort of asymptomatic BRCA1/2 GPV carriers derived from the Hereditary Breast and Ovarian cancer in the Netherlands (HEBON) study, women with HGSC at RRSO were identified. Main outcome was ten-year disease-free survival (DFS). Secondary outcomes were time to recurrence, ten-year disease-specific survival (DSS), ten-year overall survival (OS). Patient, disease and treatment characteristics associated with recurrence were described. RESULTS: The 28 included women with HGSC at RRSO were diagnosed at a median age of 55.3 years (range: 33.5-74.3). After staging, eighteen women had (FIGO) stage I, three stage II and five had stage III disease. Two women did not undergo surgical staging and were classified as unknown stage. After a median follow-up of 13.5 years (range: 9.1-24.7), six women with stage I (33%), one woman with stage II (33%), two women with stage III (40%) and none of the women with unknown stage developed a recurrence. Median time to recurrence was 6.9 years (range: 0.8-9.2 years). Ten-year DFS was 68%, ten-year DSS was 88% and ten-year OS was 82%. CONCLUSION: Most asymptomatic BRCA1/2 GPV carriers with HGSC at RRSO were diagnosed at an early stage. Nevertheless, after a median follow-up of 13.5 years, nine of the 28 women with HGSC at RRSO developed a recurrence after a median of 6.9 years.
Assuntos
Cistadenocarcinoma Seroso , Mutação em Linhagem Germinativa , Neoplasias Ovarianas , Salpingo-Ooforectomia , Humanos , Feminino , Pessoa de Meia-Idade , Adulto , Idoso , Neoplasias Ovarianas/genética , Neoplasias Ovarianas/patologia , Neoplasias Ovarianas/cirurgia , Cistadenocarcinoma Seroso/genética , Cistadenocarcinoma Seroso/patologia , Cistadenocarcinoma Seroso/cirurgia , Proteína BRCA2/genética , Proteína BRCA1/genética , Recidiva Local de Neoplasia/genética , Recidiva Local de Neoplasia/prevenção & controle , Genes BRCA2 , Intervalo Livre de Doença , Genes BRCA1 , Heterozigoto , Gradação de TumoresRESUMO
In this paper, we propose a novel approach for predicting the activity/inactivity of molecules with the BRCA1 gene by combining pharmacophore modeling and deep learning techniques. Initially, we generated 3D pharmacophore fingerprints using a pharmacophore model, which captures the essential features and spatial arrangements critical for biological activity. These fingerprints served as informative representations of the molecular structures. Next, we employed deep learning algorithms to train a predictive model using the generated pharmacophore fingerprints. The deep learning model was designed to learn complex patterns and relationships between the pharmacophore features and the corresponding activity/inactivity labels of the molecules. By utilizing this integrated approach, we aimed to enhance the accuracy and efficiency of activity prediction. To validate the effectiveness of our approach, we conducted experiments using a dataset of known molecules with BRCA1 gene activity/inactivity from diverse sources. Our results demonstrated promising predictive performance, indicating the successful integration of pharmacophore modeling and deep learning. Furthermore, we utilized the trained model to predict the activity/inactivity of unknown molecules extracted from the ChEMBL database. The predictions obtained from the ChEMBL database were assessed and compared against experimentally determined values to evaluate the reliability and generalizability of our model. Overall, our proposed approach showcased significant potential in accurately predicting the activity/inactivity of molecules with the BRCA1 gene, thus enabling the identification of potential candidates for further investigation in drug discovery and development processes.
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Aprendizado Profundo , Farmacóforo , Genes BRCA1 , Reprodutibilidade dos Testes , Descoberta de Drogas/métodosAssuntos
Neoplasias da Mama , Genes BRCA1 , Genes BRCA2 , Complicações Neoplásicas na Gravidez , Feminino , Humanos , Gravidez , Neoplasias da Mama/genética , Neoplasias da Mama/mortalidade , Neoplasias da Mama/cirurgia , Heterozigoto , Complicações Neoplásicas na Gravidez/genética , Complicações Neoplásicas na Gravidez/mortalidade , Complicações Neoplásicas na Gravidez/cirurgia , Ovariectomia , Salpingectomia , Adulto , Pessoa de Meia-Idade , Análise de Sobrevida , Fatores de Tempo , RiscoAssuntos
Neoplasias da Mama , Genes BRCA1 , Genes BRCA2 , Complicações Neoplásicas na Gravidez , Feminino , Humanos , Gravidez , Neoplasias da Mama/genética , Neoplasias da Mama/mortalidade , Neoplasias da Mama/cirurgia , Fatores Etários , Heterozigoto , Complicações Neoplásicas na Gravidez/genética , Complicações Neoplásicas na Gravidez/mortalidade , Complicações Neoplásicas na Gravidez/cirurgia , Análise de SobrevidaRESUMO
We aimed to elucidate the mechanism underlying carcinogenesis by comparing normal and BRCA1/2-mutated ovarian epithelial cells established via Sendai virus-based immortalization. Ovarian epithelial cells (normal epithelium: Ovn; with germline BRCA1 mutation: OvBRCA1; with germline BRCA2 mutation: OvBRCA2) were infected with Sendai virus vectors carrying three immortalization genes (Bmi-1, hTERT, and SV40T). The immunoreactivity to anti-epithelial cellular adhesion molecule (EpCAM) antibodies in each cell line and cells after 25 passages was confirmed using flow cytometry. Chromosomes were identified and karyotyped to detect numerical and structural abnormalities. Total RNA extracted from the cells was subjected to human transcriptome sequencing. Highly expressed genes in each cell line were confirmed using real-time polymerase chain reaction. Immortalization techniques allowed 25 or more passages of Ovn, OvBRCA1, and OvBRCA2 cells. No anti-EpCAM antibody reactions were observed in primary cultures or after long-term passages of each cell line. Structural abnormalities in the chromosomes were observed in each cell line; however, the abnormal chromosomes were successfully separated from the normal structures via cloning. Only normal cells from each cell line were cloned. MMP1, CCL2, and PAPPA were more predominantly expressed in OvBRCA1 and OvBRCA2 cells than in Ovn cells. Immortalized ovarian cells derived from patients with germline BRCA1 or BRCA2 mutations showed substantially higher MMP1 expression than normal ovarian cells. However, the findings need to be validated in the future.
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Proteína BRCA1 , Proteína BRCA2 , Células Epiteliais , Ovário , Humanos , Feminino , Células Epiteliais/metabolismo , Ovário/citologia , Ovário/metabolismo , Proteína BRCA1/genética , Proteína BRCA2/genética , Neoplasias Ovarianas/genética , Neoplasias Ovarianas/patologia , Molécula de Adesão da Célula Epitelial/genética , Molécula de Adesão da Célula Epitelial/metabolismo , Expressão Gênica/genética , Mutação/genética , Linhagem Celular Transformada , Mutação em Linhagem Germinativa/genética , Telomerase/genética , Genes BRCA1 , Carcinogênese/genéticaRESUMO
OBJECTIVE: Ovarian removal prior to spontaneous/natural menopause (SM) is associated with increased risk of late life dementias including Alzheimer's disease. This increased risk may be related to the sudden and early loss of endogenous estradiol. Women with breast cancer gene mutations (BRCAm) are counseled to undergo oophorectomy prior to SM to significantly reduce their risk of developing breast, ovarian, and cervical cancers. There is limited evidence of the neurological effects of ovarian removal prior to the age of SM showing women without the BRCAm had cortical thinning in medial temporal lobe structures. A second study in women with BRCAm and bilateral salpingo-oophorectomy (BSO) noted changes in cognition. METHODS: The present, cross-sectional study examined whole-brain differences in gray matter (GM) volume using high-resolution, quantitative magnetic resonance imaging in women with BRCAm and intact ovaries (BRCA-preBSO [study cohort with BRCA mutation prior to oophorectomy]; n = 9) and after surgery with (BSO + estradiol-based therapy [ERT]; n = 10) and without (BSO; n = 10) postsurgical estradiol hormone therapy compared with age-matched women (age-matched controls; n = 10) with their ovaries. RESULTS: The BRCA-preBSO and BSO groups showed significantly lower GM volume in the left medial temporal and frontal lobe structures. BSO + ERT exhibited few areas of lower GM volume compared with age-matched controls. Novel to this study, we also observed that all three BRCAm groups exhibited significantly higher GM volume compared with age-matched controls, suggesting continued plasticity. CONCLUSIONS: The present study provides evidence, through lower GM volume, to support both the possibility that the BRCAm, alone, and early life BSO may play a role in increasing the risk for late-life dementia. At least for BRCAm with BSO, postsurgical ERT seems to ameliorate GM losses.
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Doença de Alzheimer , Demência , Substância Cinzenta , Imageamento por Ressonância Magnética , Mutação , Humanos , Feminino , Doença de Alzheimer/genética , Pessoa de Meia-Idade , Estudos Transversais , Substância Cinzenta/patologia , Substância Cinzenta/diagnóstico por imagem , Demência/genética , Ovariectomia/efeitos adversos , Idoso , Salpingo-Ooforectomia , Estradiol/sangue , Genes BRCA1 , Terapia de Reposição de Estrogênios , Genes BRCA2 , Menopausa , Neoplasias da Mama/genética , Neoplasias da Mama/cirurgia , Neoplasias da Mama/patologia , Fatores de RiscoRESUMO
BACKGROUND: 1 in 40 UK Jewish individuals carry a pathogenic variant in BRCA1/BRCA2. Traditional testing criteria miss half of carriers, and so population genetic testing is being piloted for Jewish people in England. There has been no qualitative research into the factors influencing BRCA awareness and testing experience in this group. This study aimed to explore these and inform improvements for the implementation of population genetic testing. METHODS: Qualitative study of UK Jewish adults who have undergone BRCA testing. We conducted one-to-one semistructured interviews via telephone or video call using a predefined topic guide, until sufficient information power was reached. Interviews were audio-recorded, transcribed verbatim and interpreted using applied thematic analysis. RESULTS: 32 individuals were interviewed (28 carriers, 4 non-carriers). We interpreted five themes intersecting across six time points of the testing pathway: (1) individual differences regarding personal/family history of cancer, demographics and personal attitudes/approach; (2) healthcare professionals' support; (3) pathway access and integration; (4) nature of family/partner relationships; and (5) Jewish community factors. Testing was largely triggered by connecting information to a personal/family history of cancer. No participants reported decision regret, although there was huge variation in satisfaction. Suggestions were given around increasing UK Jewish community awareness, making information and support services personally relevant and proactive case management of carriers. CONCLUSIONS: There is a need to improve UK Jewish community BRCA awareness and to highlight personal relevance of testing for individuals without a personal/family history of cancer. Traditional testing criteria caused multiple issues regarding test access and experience. Carriers want information and support services tailored to their individual circumstances.
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Proteína BRCA1 , Proteína BRCA2 , Testes Genéticos , Judeus , Humanos , Judeus/genética , Judeus/psicologia , Feminino , Adulto , Reino Unido/epidemiologia , Pessoa de Meia-Idade , Masculino , Proteína BRCA1/genética , Proteína BRCA2/genética , Predisposição Genética para Doença , Pesquisa Qualitativa , Idoso , Neoplasias da Mama/genética , Neoplasias da Mama/psicologia , Neoplasias da Mama/epidemiologia , Neoplasias da Mama/diagnóstico , Genes BRCA1RESUMO
INTRODUCTION: The impact of timing of genetic testing on uptake of risk reducing mastectomy (RRM) in affected female BRCA1/2 or PALB2 carriers remains an area of evolving interest, particularly with the introduction of mainstream genetic testing initiatives. METHODS: Women with stage I-III breast cancer and a confirmed germline pathogenic variant in BRCA1/2 or PALB2 between 2000 and 2023 were identified from an institutional genetics database. Uptake of RRM was evaluated according to disclosure of genetic testing results before or after index surgery for a first diagnosis of breast cancer. RESULTS: The cohort included 287 female BRCA1/2 or PALB2 carriers with a median age of 44 years (IQR, 36-52). Overall, 155 (54 %) carriers received genetic testing results before and 132 (46 %) after index breast surgery. Receipt of genetic testing results before surgery was associated with a higher rate of index bilateral mastectomy (58.7 % vs. 7.6 %, p < 0.001) and a commensurate decrease in adjuvant radiation (41.9 % vs. 74.2 %, p < 0.001). At a median follow up of 4.4 years after genetic testing, 219 (76.3 %) affected carriers had undergone bilateral RRM, including 83.9 % with preoperative knowledge and 67.4 % of patients with postoperative knowledge of their germline pathogenic variant (log rank, p < 0.001). On multivariate regression, disclosure of genetic testing results before index breast surgery was independently associated with long-term uptake of bilateral mastectomy (HR 1.69, 95 % CI 1.21-2.38). CONCLUSION: Genetic testing results delivered prior to index breast surgery increase uptake of bilateral RRM in affected BRCA1/2 and PALB2 carriers. Efforts to mainstream genetic testing would help optimize surgical decision-making.
Assuntos
Neoplasias da Mama , Proteína do Grupo de Complementação N da Anemia de Fanconi , Testes Genéticos , Mastectomia Profilática , Humanos , Feminino , Neoplasias da Mama/genética , Neoplasias da Mama/cirurgia , Neoplasias da Mama/radioterapia , Proteína do Grupo de Complementação N da Anemia de Fanconi/genética , Adulto , Pessoa de Meia-Idade , Mutação em Linhagem Germinativa , Revelação , Mastectomia , Fatores de Tempo , Heterozigoto , Genes BRCA2 , Proteína BRCA1/genética , Predisposição Genética para Doença , Genes BRCA1 , Proteína BRCA2/genética , Procedimentos DesnecessáriosRESUMO
Hereditary breast and ovarian cancer syndrome is an autosomal dominant cancer susceptibility syndrome mainly due to variants in BRCA1 or BRCA2 genes. Patients presenting with BRCA1 or BRCA2 gene mutations have a lifetime risk of developing breast or ovarian cancer (80% and 40%, respectively). Genetic testing to explore the predisposition to develop cancer represents a pivotal factor in such cases, and this review wants to explore the main implications in terms of medicolegal liability and insurance issues. Medicolegal issues related to these diagnostic processes include: (a) failure to recommend the test; (b) failure to properly interpret the test; (c) failure to correctly translate results into clinical practice; (d) lack of informed consent; and (e) failure to refer patients to specialized genetic counseling. Such errors may lead to compensation since the legal burden inherent in the efficacy of prophylactic interventions is a proof that requires the so-called 'preponderance of the evidence'. Concerning insurance issues, the carriers of such alleles without cancer are healthy because the genetic predisposition is not a disease per se but represents a (relevant) health risk. However, disclosure of these conditions can be impelled by insurers. It can lead to so-called 'genetic discrimination' because insurance companies might use genetic information to limit insurance options or increase their costs. Many private and public healthcare funders do not cover risk reducing surgeries, even when recommended as part of a risk reduction management plan for BRCA gene mutation carriers. Here, positions on these matters from different high income countries are discussed, stressing the importance of a common supranational or international regulatory framework to reach a trade-off between the economic interests of insurers and the rights of carriers not to disclose extremely sensitive information.