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Hereditary breast and ovarian cancer

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https://www.readbyqxmd.com/read/29124494/information-and-support-needs-of-young-women-regarding-breast-cancer-risk-and-genetic-testing-adapting-effective-interventions-for-a-novel-population
#1
Suzanne C O'Neill, Chalanda Evans, Rebekah J Hamilton, Beth N Peshkin, Claudine Isaacs, Sue Friedman, Kenneth P Tercyak
Young women from hereditary breast and ovarian cancer (HBOC) families face a unique set of challenges in managing their HBOC risk, where obtaining essential information to inform decision making is key. Previous work suggests that this need for specific health information also comes at a time of heightened distress and greater individuation from family. In this report, we describe our adaptation of a previously-studied behavioral intervention for this population, utilizing a systematic approach outlined by the Centers for Disease Control and Prevention...
November 9, 2017: Familial Cancer
https://www.readbyqxmd.com/read/29103540/emerging-concepts-in-gastric-neoplasia-heritable-gastric-cancers-and-polyposis-disorders
#2
REVIEW
Rachel S van der Post, Fátima Carneiro
Hereditary gastric cancer is a relatively rare disease with specific clinical and histopathologic characteristics. Hereditary gastric cancer of the diffuse type is predominantly caused by germline mutations in CDH1. The inherited cause of familial intestinal gastric cancer is unknown. Gastric adenocarcinoma and proximal polyposis of the stomach is a hereditary cancer syndrome caused by germline mutations in promoter 1B of APC. Other well-defined cancer syndromes, such as Lynch, Li-Fraumeni, and hereditary breast or ovarian cancer syndromes, are associated with increased risk of gastric cancer...
December 2017: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/29094253/peritoneal-cancer-arising-after-total-abdominal-hysterectomy-and-bilateral-salpingo-oophorectomy-for-cervical-cancer-in-a-patient-with-right-breast-cancer-and-germline-mutation-of-brca1-gene-a-case-report-and-literature-review
#3
Michiko Harao, Jiro Ando, Hiroyuki Kamata, Nobuo Hoshi, Seiji Igarashi, Ryuzo Sekiguchi, Kokichi Sugano
Primary peritoneal carcinoma is usually advanced at diagnosis and curability is low unless the patient has a small tumor burden. Peritoneal carcinoma can occur in association with hereditary breast and ovarian cancer syndrome, which is thought to account for 5-6% of all breast cancer. Mutations of two breast cancer susceptibility genes, BRCA1 and BRCA2, are responsible for hereditary breast and ovarian cancer. Women with BRCA1/2 mutations often undergo risk-reducing salpingo-oophorectomy (RRSO) to prevent both ovarian and breast cancer...
November 1, 2017: Breast Cancer: the Journal of the Japanese Breast Cancer Society
https://www.readbyqxmd.com/read/29065108/towards-gene-and-gender-based-risk-estimates-in-lynch-syndrome-age-specific-incidences-for-13-extra-colorectal-cancer-types
#4
Christina Therkildsen, Steen Ladelund, Lars Smith-Hansen, Lars Joachim Lindberg, Mef Nilbert
BACKGROUND: In Lynch syndrome, inherited mismatch repair (MMR) defects predispose to colorectal cancer and to a wide spectrum of extra-colorectal tumours. Utilising a cohort study design, we aimed to determine the risk of extra-colorectal cancer and to identify yet unrecognised tumour types. METHODS: Data from 1624 Lynch syndrome mutation carriers in the Danish hereditary non-polyposis colorectal cancer register were used to estimate the sex- and age-specific incidence rate ratios (IRRs) for 30 extra-colorectal malignancies with comparison to the general population...
October 24, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29034880/generation-of-induced-pluripotent-stem-cell-ipsc-line-from-a-patient-with-triple-negative-breast-cancer-with-hereditary-exon-17-deletion-of-brca1-gene
#5
Frank Griscelli, Noufissa Oudrhiri, Olivier Feraud, Dominique Divers, Lucie Portier, Ali G Turhan, Annelise Bennaceur Griscelli
BRCA1 germline mutation confers hereditary predisposition for breast and ovarian cancer. To understand the physiopathology of mammary and ovarian epithelial cancer transformation, and to identify early driver molecular events, we have generated an iPSC line from a patient carrying a germline exon 17 deletion in BRCA1 gene (BRAC1Ex17 iPSC) in a high-risk family context. Blood cells were reprogrammed used non-integrative virus of Sendaï. The BRCA1-deleted iPSC had normal karyotype, harboured a deletion in the exon 17 of the BRCA1 gene, expressed pluripotent hallmarks and had the differentiation capacity into the three germ layers...
October 2017: Stem Cell Research
https://www.readbyqxmd.com/read/29021619/pan-cancer-analysis-of-bi-allelic-alterations-in-homologous-recombination-dna-repair-genes
#6
Nadeem Riaz, Pedro Blecua, Raymond S Lim, Ronglai Shen, Daniel S Higginson, Nils Weinhold, Larry Norton, Britta Weigelt, Simon N Powell, Jorge S Reis-Filho
BRCA1 and BRCA2 are involved in homologous recombination (HR) DNA repair and are germ-line cancer pre-disposition genes that result in a syndrome of hereditary breast and ovarian cancer (HBOC). Whether germ-line or somatic alterations in these genes or other members of the HR pathway and if mono- or bi-allelic alterations of HR-related genes have a phenotypic impact on other cancers remains to be fully elucidated. Here, we perform a pan-cancer analysis of The Cancer Genome Atlas (TCGA) data set and observe that bi-allelic pathogenic alterations in homologous recombination (HR) DNA repair-related genes are prevalent across many malignancies...
October 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/29020660/identification-of-twenty-nine-novel-germline-unclassified-variants-of-brca1-and-brca2-genes-in-1400-italian-individuals
#7
Concetta Santonocito, Margherita Scapaticci, Donatella Guarino, Andrea Bartolini, Angelo Minucci, Paola Concolino, Giovanni Scambia, Ida Paris, Ettore Capoluongo
OBJECTIVES: Breast and/or ovarian cancers are complex multifactorial diseases caused by interaction of both genetic and non-genetic factors and characterized by predisposition to inheritance. BRCA1 and BRCA2 genes are the most clinically involved with these kinds of cancer and the spectrum of variants affecting these genes is very wide. In fact, point variants, large or small insertions/deletions, genomic rearrangements can be found in these patients, although a large number of variants with uncertain biological and clinical significance continues to be identified...
December 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/29019095/cost-effectiveness-of-surveillance-and-prevention-strategies-in-brca1-2-mutation-carriers
#8
Hideko Yamauchi, Chizuko Nakagawa, Makoto Kobayashi, Yusuke Kobayashi, Toshiki Mano, Seigo Nakamura, Masami Arai
BACKGROUND: Cost-effectiveness analysis is an important aspect of healthcare, including in Japan, where preventive measures for BRCA1/2 mutation carriers are not covered by health insurance. METHODS: We developed Markov models in a simulated cohort of women aged 35-70 years, and compared outcomes of surveillance with risk-reducing mastectomy (RRM) at age 35, risk-reducing salpingo-oophorectomy (RRSO) at age 45, and both (RRM&RRSO). We used breast and ovarian cancer incidences and adverse event rates from the previous studies, adjuvant chemotherapy, and hormonal therapy rates from the Hereditary Breast and Ovarian Cancer Registration 2015 in Japan, mortality rates from the National Cancer Center Hospital, Japan Society of Clinical Oncology, and Ministry of Health, Labour and Welfare, and direct costs from St...
October 10, 2017: Breast Cancer: the Journal of the Japanese Breast Cancer Society
https://www.readbyqxmd.com/read/28993866/cdh1-mutation-screen-in-a-brca1-2-negative-familial-breast-ovarian-cancer-cohort
#9
Frederik Stuebs, Simone Heidemann, Almuth Caliebe, Christoph Mundhenke, Norbert Arnold
PURPOSE: Mutations in the CDH1 gene are linked both to diffuse gastric cancer and invasive lobular carcinoma (ILC). A high mutation rate is found in families fulfilling the diagnostic criteria for hereditary diffuse gastric cancer. Aim of this study was to clarify whether or not there is a significant contribution of CDH1 mutations in hereditary breast-/ovarian cancer (HBOC). METHODS: Ninety-seven unrelated probands fulfilling the diagnostic criteria for HBOC (96 affected, 1 unaffected) but tested negative for pathogenic BRCA1/2 mutations were screened for CDH1 mutations by denaturing high performance liquid chromatography (DHPLC) and subsequent Sanger sequencing of suspicious and positive DHPLC results...
October 9, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28975465/expanding-the-spectrum-of-germline-variants-in-cancer
#10
Abdul K Siraj, Tariq Masoodi, Rong Bu, Sandeep Kumar Parvathareddy, Ismail A Al-Badawi, Nasser Al-Sanea, Luai H Ashari, Alaa Abduljabbar, Samar Alhomoud, Saif S Al-Sobhi, Asma Tulbah, Dahish Ajarim, Khalid Alzoman, Muna Aljuboury, Hussam Bin Yousef, Mohammed Al-Dawish, Fouad Al-Dayel, Fowzan S Alkuraya, Khawla S Al-Kuraya
Our ability to identify germline variants in hereditary cancer cases remains challenged by the incomplete cataloging of relevant genes and lack of consensus on who should be tested. We designed a panel [hereditary oncogenesis predisposition evaluation (HOPE)] that encompasses most of the genes known to be associated with cancer development and tested its yield on more than 1300 samples of cancer patients. Pathogenic or likely pathogenic variants in high and intermediate risk genes were identified in 16, 23...
October 3, 2017: Human Genetics
https://www.readbyqxmd.com/read/28971986/genetic-testing-in-a-population-based-sample-of-breast-and-ovarian-cancer-survivors-from-the-reach-randomized-trial-cost-barriers-and-moderators-of-counseling-mode
#11
Laurie E Steffen, Ruofei Du, Amanda Gammon, Jeanne S Mandelblatt, Wendy K Kohlmann, Ji-Hyun Lee, Saundra S Buys, Antoinette M Stroup, Rebecca A Campo, Kristina G Flores, Belinda Vicuña, Marc D Schwartz, Anita Y Kinney
BACKGROUND: This study evaluates predictors of BRCA1/2 testing among breast and ovarian cancer survivors who received genetic counseling as part of a randomized trial and evaluates moderators of counseling mode on testing uptake. METHODS: Predictors of BRCA1/2 testing within 1-year post-counseling were evaluated using multivariable logistic regression in a population-based sample of breast and ovarian cancer survivors at increased hereditary risk randomly assigned to in-person (IPC; n = 379) vs...
September 29, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28961279/the-frequency-of-cancer-predisposition-gene-mutations-in-hereditary-breast-and-ovarian-cancer-patients-in-taiwan-from-brca1-2-to-multi-gene-panels
#12
Pi-Lin Sung, Kuo-Chang Wen, Yi-Jen Chen, Ta-Chung Chao, Yi-Fang Tsai, Ling-Ming Tseng, Jian-Tai Timothy Qiu, Kuan-Chong Chao, Hua-Hsi Wu, Chi-Mu Chuang, Peng-Hui Wang, Chi-Ying F Huang
An important role of genetic factors in the development of breast cancer (BC) or ovarian cancer (OC) in Taiwanese (ethnic Chinese) patients has been suggested. However, other than germline BRCA1 or BRCA2 mutations, which are related to hereditary breast-ovarian cancer (HBOC), cancer-predisposition genes have not been well studied in this population. The aim of the present study was to more accurately summarize the prevalence of genetic mutations in HBOC patients using various gene panels ranging in size from BRCA1/2 alone to multi-gene panels...
2017: PloS One
https://www.readbyqxmd.com/read/28959512/hypoxia-activated-alkylating-agents-in-brca1-mutant-ovarian-serous-carcinoma
#13
Michael Conroy, Mitesh J Borad, Alan H Bryce
Breast cancer 1 antigen (BRCA 1) and breast cancer 2 antigen (BRCA2) genes play a significant role in deoxyribonucleic acid (DNA) repair by means of interstrand crosslink repair, and deleterious germline mutations of these are responsible for most hereditary breast and ovarian cancers. Therapeutic strategies which specifically target interstrand crosslink repair can therefore be helpful in patients with harmful mutations. We describe two patients with advanced ovarian cancer and deleterious BRCA1 mutations who were treated with TH-302, a hypoxia-activated alkylating agent...
July 26, 2017: Curēus
https://www.readbyqxmd.com/read/28944232/mutational-analysis-of-brca1-and-brca2-genes-in-peruvian-families-with-hereditary-breast-and-ovarian-cancer
#14
Jose Buleje, Maria Guevara-Fujita, Oscar Acosta, Francia D P Huaman, Pierina Danos, Alexis Murillo, Joseph A Pinto, Jhajaira M Araujo, Alfredo Aguilar, Jaime Ponce, Carlos Vigil, Carlos Castaneda, Gabriela Calderon, Henry L Gomez, Ricardo Fujita
BACKGROUND: Breast cancer is one of the most prevalent malignancies in the world. In Peru, breast cancer is the second cause of death among women. Five to ten percent of patients present a high genetic predisposition due to BRCA1 and BRCA2 germline mutations. METHODS: We performed a comprehensive analysis of BRCA1 and BRCA2 genes by Sanger sequencing and multiplex ligation-dependent probe amplification (MLPA) to detect large rearrangements in patients from 18 families, which met the criteria for hereditary breast cancer...
September 2017: Molecular Genetics & Genomic Medicine
https://www.readbyqxmd.com/read/28939999/our-genes-our-selves-hereditary-breast-cancer-and-biological-citizenship-in-norway
#15
Pål Møller, Eivind Hovig
The concept 'hereditary breast cancer' is commonly used to delineate a group of people genetically at risk for breast cancer-all of whom also having risk for other cancers. People carrying pathogenic variants of the BRCA1 and BRCA2 genes are often referred to as those having predisposition for 'hereditary breast cancer'. The two genes, however, are when altered, associated with different risks for and dying from breast cancer. The main risk for dying for carriers of both genes is from ovarian cancer. These biological facts are of philosophical interest, because they are the facts underlying the public debate on BRCA1/2 genetic testing as a model for the discussion of how to implement genetic knowledge and technologies in personalized medicine...
September 22, 2017: Medicine, Health Care, and Philosophy
https://www.readbyqxmd.com/read/28936272/hereditary-gynaecologic-cancers-in-nepal-a-proposed-model-of-care-to-serve-high-risk-populations-in-developing-countries
#16
Hanoon P Pokharel, Neville F Hacker, Lesley Andrews
BACKGROUND: Endometrial, ovarian and breast cancers are paradigms for global health disparity. Women living in the developing world continue to present in later stages of disease and have fewer options for treatment than those in developed countries. Risk reducing surgery is of proven benefit for women at high risk of gynaecological cancer. There is no specific model for identification and management of such women in the developing world. METHODS: We have integrated data from our published audit of a major gynaecological oncology centre at Royal Hospital for Women in Australia, with data from our survey and a focus group discussion of Nepalese gynaecological health care professionals regarding genetic testing, and findings from the literature...
2017: Hereditary Cancer in Clinical Practice
https://www.readbyqxmd.com/read/28931501/cancer-predisposition-cascade-screening-for-hereditary-breast-ovarian-cancer-and-lynch-syndromes-in-switzerland-study-protocol
#17
Maria C Katapodi, Valeria Viassolo, Maria Caiata-Zufferey, Christos Nikolaidis, Rosmarie Bührer-Landolt, Nicole Buerki, Rossella Graffeo, Henrik Csaba Horváth, Christian Kurzeder, Manuela Rabaglio, Michael Scharfe, Corinne Urech, Tobias E Erlanger, Nicole Probst-Hensch, Karl Heinimann, Viola Heinzelmann-Schwarz, Olivia Pagani, Pierre O Chappuis
BACKGROUND: Breast, colorectal, ovarian, and endometrial cancers constitute approximately 30% of newly diagnosed cancer cases in Switzerland, affecting more than 12,000 individuals annually. Hundreds of these patients are likely to carry germline pathogenic variants associated with hereditary breast ovarian cancer (HBOC) or Lynch syndrome (LS). Genetic services (counseling and testing) for hereditary susceptibility to cancer can prevent many cancer diagnoses and deaths through early identification and risk management...
September 20, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28930807/breadth-of-genetic-testing-selected-by-patients-at-risk-of-hereditary-breast-and-ovarian-cancer
#18
J Brian Szender, Jasmine Kaur, Katherine Clayback, Mollie L Hutton, June Mikkelson, Kunle Odunsi, Cara Dresbold
OBJECTIVE: The aim of this study was to evaluate the ability of patients at risk of hereditary breast and ovarian cancer (HBOC) syndrome to select the extent of genetic testing personally preferred and the impact of demographic factors on the breadth of testing pursued. METHODS: A single-institution cohort was enumerated consisting of patients referred for clinical genetic counseling secondary to risk of HBOC syndrome. This was a retrospective study of consecutive patients seen for genetic counseling; all patients completed an epidemiologic questionnaire and provided personal and family medical histories...
September 19, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28914618/hereditary-breast-and-ovarian-cancer-syndrome-moving-beyond-brca1-and-brca2
#19
Lien N Hoang, Blake C Gilks
The recent implementation of next generation sequencing and multigene platforms has expanded the spectrum of hereditary breast and ovarian cancer syndrome, beyond the traditional genes BRCA1 and BRCA2. A large number of other moderate penetrance genes have now been uncovered, which also play critical roles in repairing double stranded DNA breaks through the homologous recombination pathway. This review discusses the landmark discoveries of BRCA1 and BRCA2, the homologous repair pathway and new genes discovered in hereditary breast and ovarian cancer syndrome, as well as their clinicopathologic significance and implications for genetic testing...
September 13, 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/28911102/fancj-helicase-controls-the-balance-between-short-and-long-tract-gene-conversions-between-sister-chromatids
#20
Sarmi Nath, Kumar Somyajit, Anup Mishra, Ralph Scully, Ganesh Nagaraju
The FANCJ DNA helicase is linked to hereditary breast and ovarian cancers as well as bone marrow failure disorder Fanconi anemia (FA). Although FANCJ has been implicated in the repair of DNA double-strand breaks (DSBs) by homologous recombination (HR), the molecular mechanism underlying the tumor suppressor functions of FANCJ remains obscure. Here, we demonstrate that FANCJ deficient human and hamster cells exhibit reduction in the overall gene conversions in response to a site-specific chromosomal DSB induced by I-SceI endonuclease...
September 6, 2017: Nucleic Acids Research
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