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RAD51C breast ovarian cancer

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https://www.readbyqxmd.com/read/29063517/parp-inhibitors-in-the-treatment-of-triple-negative-breast-cancer
#1
REVIEW
Jill J J Geenen, Sabine C Linn, Jos H Beijnen, Jan H M Schellens
Breast cancer is a heterogeneous disease, manifesting in a broad differentiation in phenotypes and morphologic profiles, resulting in variable clinical behavior. Between 10 and 20% of all breast cancers are triple negative. Triple-negative breast cancer (TNBC) lacks the expression of human epidermal growth factor receptor 2 (HER2) and hormone receptors; therefore, to date, chemotherapy remains the backbone of treatment. TNBC tends to be aggressive and has a high histological grade, resulting in a poor 5-year prognosis...
October 23, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/29053726/prevalence-of-deleterious-germline-variants-in-risk-genes-including-brca1-2-in-consecutive-ovarian-cancer-patients-ago-tr-1
#2
Philipp Harter, Jan Hauke, Florian Heitz, Alexander Reuss, Stefan Kommoss, Frederik Marmé, André Heimbach, Katharina Prieske, Lisa Richters, Alexander Burges, Guido Neidhardt, Nikolaus de Gregorio, Ahmed El-Balat, Felix Hilpert, Werner Meier, Rainer Kimmig, Karin Kast, Jalid Sehouli, Klaus Baumann, Christian Jackisch, Tjoung-Won Park-Simon, Lars Hanker, Sandra Kröber, Jacobus Pfisterer, Heidrun Gevensleben, Andreas Schnelzer, Dimo Dietrich, Tanja Neunhöffer, Mathias Krockenberger, Sara Y Brucker, Peter Nürnberg, Holger Thiele, Janine Altmüller, Josefin Lamla, Gabriele Elser, Andreas du Bois, Eric Hahnen, Rita Schmutzler
BACKGROUND: Identification of families at risk for ovarian cancer offers the opportunity to consider prophylactic surgery thus reducing ovarian cancer mortality. So far, identification of potentially affected families in Germany was solely performed via family history and numbers of affected family members with breast or ovarian cancer. However, neither the prevalence of deleterious variants in BRCA1/2 in ovarian cancer in Germany nor the reliability of family history as trigger for genetic counselling has ever been evaluated...
2017: PloS One
https://www.readbyqxmd.com/read/29020732/detection-of-germline-mutations-in-patients-with-epithelial-ovarian-cancer-using-multi-gene-panels-beyond-brca1-2
#3
Kyung Jin Eoh, Ji Eun Kim, Hyung Seok Park, Seung-Tae Lee, Ji Soo Park, Jung Woo Han, Jung-Yun Lee, Sunghoon Kim, Sang Wun Kim, Jae Hoon Kim, Young Tae Kim, Eun Ji Nam
Purpose: Next-generation sequencing (NGS) allows simultaneous sequencing of multiple cancer susceptibility genes and may represent a more efficient and less expensive approach than sequential testing. We assessed the frequency of germline mutations in individuals with epithelial ovarian cancer (EOC), using multi-gene panels and NGS. Materials and Methods: Patients with EOC (n=117) with/without a family history of breast or ovarian cancer were recruited consecutively, from March 2016 to December 2016...
September 27, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
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
#4
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/28874143/chek2-c-1100delc-mutation-is-associated-with-an-increased-risk-for-male-breast-cancer-in-finnish-patient-population
#5
Sanna Hallamies, Liisa M Pelttari, Paula Poikonen-Saksela, Antti Jekunen, Arja Jukkola-Vuorinen, Päivi Auvinen, Carl Blomqvist, Kristiina Aittomäki, Johanna Mattson, Heli Nevanlinna
BACKGROUND: Several susceptibility genes have been established for female breast cancer, of which mutations in BRCA1 and especially in BRCA2 are also known risk factors for male breast cancer (MBC). The role of other breast cancer genes in MBC is less well understood. METHODS: In this study, we have genotyped 68 MBC patients for the known breast or ovarian cancer associated mutations in the Finnish population in CHEK2, PALB2, RAD51C, RAD51D, and FANCM genes. RESULTS: CHEK2 c...
September 5, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28802053/gene-panel-testing-of-breast-and-ovarian-cancer-patients-identifies-a-recurrent-rad51c-duplication
#6
Liisa M Pelttari, Hermela Shimelis, Heidi Toiminen, Anders Kvist, Therese Törngren, Åke Borg, Carl Blomqvist, Ralf Bützow, Fergus Couch, Kristiina Aittomäki, Heli Nevanlinna
Gene-panel sequencing allows comprehensive analysis of multiple genes simultaneously and is now routinely used in clinical mutation testing of high-risk breast and ovarian cancer patients. However, only BRCA1 and BRCA2 are often analyzed also for large genomic changes. Here, we have analyzed 10 clinically relevant susceptibility genes in 95 breast or ovarian cancer patients with gene-panel sequencing including also CNV analysis for genomic changes. We identified 12 different pathogenic BRCA1, BRCA2, TP53, PTEN, CHEK2, or RAD51C mutations in 18/95 patients (19%)...
August 12, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/28796317/mutation-status-of-rad51c-palb2-and-brip1-in-100-japanese-familial-breast-cancer-cases-without-brca1-and-brca2-mutations
#7
Katsutoshi Sato, Mio Koyasu, Sachio Nomura, Yuri Sato, Mizuho Kita, Yuumi Ashihara, Yasue Adachi, Shinji Ohno, Takuji Iwase, Dai Kitagawa, Eri Nakashima, Reiko Yoshida, Yoshio Miki, Masami Arai
In addition to BRCA1 and BRCA2, RAD51C, PALB2 and BRIP1 are known as breast cancer susceptibility genes. However, the mutation status of these genes in Japanese familial breast cancer cases has not yet been evaluated. To this end, we analyzed the exon sequence and genomic rearrangement of RAD51C, PALB2 and BRIP1 in 100 Japanese patients diagnosed with familial breast and ovarian cancer and without BRCA1 and BRCA2 mutations. We detected a large deletion from exons 6 to 9 in RAD51C, 4 novel BRIP1 missense variants containing 3 novel non-synonymous variants, c...
November 2017: Cancer Science
https://www.readbyqxmd.com/read/28709830/pathologic-findings-in-breast-fallopian-tube-and-ovary-specimens-in-non-brca-hereditary-breast-and-or-ovarian-cancer-syndromes-a-study-of-18-patients-with-deleterious-germline-mutations-in-rad51c-bard1-brip1-palb2-mutyh-or-chek2
#8
J Kenneth Schoolmeester, Ann M Moyer, McKinsey L Goodenberger, Gary L Keeney, Jodi M Carter, Jamie N Bakkum-Gamez
Germline BRCA mutations account for a significant proportion of genetic/familial risk of breast and ovarian cancer (GBOC) susceptibility, but a broader spectrum of GBOC susceptibility genes has emerged in recent years. Genotype to phenotype correlations are known for some established forms of GBOC, however whether such correlations exist for less common GBOC variants is unclear. We reviewed our institution's experience with non-BRCA GBOC, looking specifically for trends in pathologic and clinical features. Eighteen women with deleterious germline mutations in RAD51C (5 patients), BARD1 (1 patient), BRIP1 (2 patients), PALB2 (3 patients), MUTYH (2 patients) or CHEK2 (5 patients) were identified between January 2011 and December 2016...
July 11, 2017: Human Pathology
https://www.readbyqxmd.com/read/28418444/associations-between-cancer-predisposition-testing-panel-genes-and-breast-cancer
#9
Fergus J Couch, Hermela Shimelis, Chunling Hu, Steven N Hart, Eric C Polley, Jie Na, Emily Hallberg, Raymond Moore, Abigail Thomas, Jenna Lilyquist, Bingjian Feng, Rachel McFarland, Tina Pesaran, Robert Huether, Holly LaDuca, Elizabeth C Chao, David E Goldgar, Jill S Dolinsky
Importance: Germline pathogenic variants in BRCA1 and BRCA2 predispose to an increased lifetime risk of breast cancer. However, the relevance of germline variants in other genes from multigene hereditary cancer testing panels is not well defined. Objective: To determine the risks of breast cancer associated with germline variants in cancer predisposition genes. Design, Setting, and Participants: A study population of 65 057 patients with breast cancer receiving germline genetic testing of cancer predisposition genes with hereditary cancer multigene panels...
September 1, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28254144/hereditary-ovarian-cancer-and-risk-reduction
#10
REVIEW
Lesley Andrews, David G Mutch
Mutations in BRCA1 and BRCA2 account for hereditary breast and ovarian cancer syndrome in a majority of families and 14% of epithelial ovarian cancer cases. Despite next-generation sequencing, other identified genes (Lynch Syndrome, RAD51C, RAD51D, and BRIP1) account for only a small proportion of cases. The risk of ovarian cancer by age 70 is approximately 40% for BRCA1 and 18% for BRCA2. Most of these cancers are high-grade serous cancers that predominantly arise in the fimbriae of the fallopian tube. Ovarian screening does not improve outcomes, so women at high risk are recommended to undergo risk-reducing salpingo-oophorectomy around the age of 40, followed by hormone replacement therapy (HRT)...
May 2017: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/27753535/estrogen-induces-rad51c-expression-and-localization-to-sites-of-dna-damage
#11
Anya Alayev, Rachel S Salamon, Subrata Manna, Naomi S Schwartz, Adi Y Berman, Marina K Holz
Homologous recombination (HR) is a conserved process that maintains genome stability and cell survival by repairing DNA double-strand breaks (DSBs). The RAD51-related family of proteins is involved in repair of DSBs; consequently, deregulation of RAD51 causes chromosomal rearrangements and stimulates tumorigenesis. RAD51C has been identified as a potential tumor suppressor and a breast and ovarian cancer susceptibility gene. Recent studies have also implicated estrogen as a DNA-damaging agent that causes DSBs...
December 2016: Cell Cycle
https://www.readbyqxmd.com/read/27734215/time-to-incorporate-germline-multigene-panel-testing-into-breast-and-ovarian-cancer-patient-care
#12
REVIEW
Rossella Graffeo, Luca Livraghi, Olivia Pagani, Aron Goldhirsch, Ann H Partridge, Judy E Garber
PURPOSE: Genetic evaluation is increasingly becoming an integral part of the management of women with newly diagnosed breast and ovarian cancer (OC), and of individuals at high risk for these diseases. Genetic counseling and testing have been incorporated into oncological care to help and complete management and treatment strategies. Risk assessment and early detection strategies in individuals with BRCA1/2 mutations and with Lynch syndrome have been quite extensively studied, whereas much less is known about the management of mutation carriers with less common high-penetrance cancer susceptibility genes (PTEN, TP53, STK11, CDH1), and particularly those who carry mutations in moderate-penetrance genes (e...
December 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27622768/the-rad51c-exonic-splice-site-mutations-c-404g-c-and-c-404g-t-are-associated-with-familial-breast-and-ovarian-cancer
#13
Guido Neidhardt, Alexandra Becker, Jan Hauke, Judit Horváth, Nadja Bogdanova Markov, Stefanie Heilmann-Heimbach, Heide Hellebrand, Holger Thiele, Janine Altmüller, Peter Nürnberg, Alfons Meindl, Kerstin Rhiem, Britta Blümcke, Barbara Wappenschmidt, Rita K Schmutzler, Eric Hahnen
Whereas RAD51C mutations increase the relative risk for ovarian cancer (OC) to 5.88 (95% confidence interval=2.91-11.88, P=7.65×10), the associated risks for breast cancer (BC) remain largely unknown, as deleterious RAD51C alterations are extremely rare in BC-only families. Here, we report the results of a RAD51C mutational screening in a large series of German familial index patients negative for pathogenic BRCA1/2 mutations and the in-vitro characterization of two novel exonic RAD51C splice-site mutations...
March 2017: European Journal of Cancer Prevention
https://www.readbyqxmd.com/read/27616075/gene-panel-sequencing-in-familial-breast-ovarian-cancer-patients-identifies-multiple-novel-mutations-also-in-genes-others-than-brca1-2
#14
Cornelia Kraus, Juliane Hoyer, Georgia Vasileiou, Marius Wunderle, Michael P Lux, Peter A Fasching, Mandy Krumbiegel, Steffen Uebe, Miriam Reuter, Matthias W Beckmann, André Reis
Breast and ovarian cancer (BC/OC) predisposition has been attributed to a number of high- and moderate to low-penetrance susceptibility genes. With the advent of next generation sequencing (NGS) simultaneous testing of these genes has become feasible. In this monocentric study, we report results of panel-based screening of 14 BC/OC susceptibility genes (BRCA1, BRCA2, RAD51C, RAD51D, CHEK2, PALB2, ATM, NBN, CDH1, TP53, MLH1, MSH2, MSH6 and PMS2) in a group of 581 consecutive individuals from a German population with BC and/or OC fulfilling diagnostic criteria for BRCA1 and BRCA2 testing including 179 with a triple-negative tumor...
January 1, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27581129/ready-to-clone-cnv-detection-and-breakpoint-fine-mapping-in-breast-and-ovarian-cancer-susceptibility-genes-by-high-resolution-array-cgh
#15
Karl Hackmann, Franziska Kuhlee, Elitza Betcheva-Krajcir, Anne-Karin Kahlert, Luisa Mackenroth, Barbara Klink, Nataliya Di Donato, Andreas Tzschach, Karin Kast, Pauline Wimberger, Evelin Schrock, Andreas Rump
PURPOSE: Detection of predisposing copy number variants (CNV) in 330 families affected with hereditary breast and ovarian cancer (HBOC). METHODS: In order to complement mutation detection with Illumina's TruSight Cancer panel, we designed a customized high-resolution 8 × 60k array for CGH (aCGH) that covers all 94 genes from the panel. RESULTS: Copy number variants with immediate clinical relevance were detected in 12 families (3.6%). Besides 3 known CNVs in CHEK2, RAD51C, and BRCA1, we identified 3 novel pathogenic CNVs in BRCA1 (deletion of exons 4-13, deletion of exons 12-18) and ATM (deletion exons 57-63) plus an intragenic duplication of BRCA2 (exons 3-11) and an intronic BRCA1 variant with unknown pathogenicity...
October 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27413415/a-novel-deleterious-c-2656g-t-msh2-germline-mutation-in-a-pakistani-family-with-a-phenotypic-overlap-of-hereditary-breast-and-ovarian-cancer-and-lynch-syndrome
#16
Muhammad U Rashid, Humaira Naeemi, Noor Muhammad, Asif Loya, Muhammed A Yusuf, Jan Lubiński, Anna Jakubowska, Ute Hamann
BACKGROUND: Hereditary breast and ovarian cancer syndrome (HBOC) and Lynch syndrome (LS) account for a significant proportion of inherited gynecologic malignancies, mainly caused by pathogenic germline mutations in the BRCA1 and BRCA2 genes or in mismatch repair (MMR) genes, such as MLH1 and MSH2. Women harboring deleterious mutations in these genes have increased life-time risks of developing a number of malignancies including ovarian cancer. Since there is a phenotypic overlap of HBOC and LS, timely identification of individuals at-risk of a particular syndrome is crucial in order to optimize cancer risk management...
2016: Hereditary Cancer in Clinical Practice
https://www.readbyqxmd.com/read/26976419/frequency-of-germline-mutations-in-25-cancer-susceptibility-genes-in-a-sequential-series-of-patients-with-breast-cancer
#17
Nadine Tung, Nancy U Lin, John Kidd, Brian A Allen, Nanda Singh, Richard J Wenstrup, Anne-Renee Hartman, Eric P Winer, Judy E Garber
PURPOSE: Testing for germline mutations in BRCA1/2 is standard for select patients with breast cancer to guide clinical management. Next-generation sequencing (NGS) allows testing for mutations in additional breast cancer predisposition genes. The frequency of germline mutations detected by using NGS has been reported in patients with breast cancer who were referred for BRCA1/2 testing or with triple-negative breast cancer. We assessed the frequency and predictors of mutations in 25 cancer predisposition genes, including BRCA1/2, in a sequential series of patients with breast cancer at an academic institution to examine the utility of genetic testing in this population...
May 1, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/26873923/targeting-brca1-and-brca2-deficient-cells-with-rad52-small-molecule-inhibitors
#18
Fei Huang, Nadish Goyal, Katherine Sullivan, Kritika Hanamshet, Mikir Patel, Olga M Mazina, Charles X Wang, W Frank An, James Spoonamore, Shailesh Metkar, Kyle A Emmitte, Simon Cocklin, Tomasz Skorski, Alexander V Mazin
RAD52 is a member of the homologous recombination (HR) pathway that is important for maintenance of genome integrity. While single RAD52 mutations show no significant phenotype in mammals, their combination with mutations in genes that cause hereditary breast cancer and ovarian cancer like BRCA1, BRCA2, PALB2 and RAD51C are lethal. Consequently, RAD52 may represent an important target for cancer therapy. In vitro, RAD52 has ssDNA annealing and DNA strand exchange activities. Here, to identify small molecule inhibitors of RAD52 we screened a 372,903-compound library using a fluorescence-quenching assay for ssDNA annealing activity of RAD52...
May 19, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/26691941/-retrospective-ngs-study-in-high-risk-hereditary-cancer-patients-at-masaryk-memorial-cancer-institute
#19
E Macháčková, J Hazova, E Sťahlová Hrabincová, P Vašíčková, M Navrátilová, M Svoboda, L Foretová
BACKGROUND: Currently, more than 200 hereditary cancer syndromes have been described, yet, in most countries genetic testing is restricted to a narrow spectrum of genes within a limited group of people tested. METHODS: For this retrospective study we used the TruSight cancer panel (Illumina)--NGS panel targeting 94 cancer predisposition genes in order to analyze 50 high-risk cancer patients with significant personal and family history of cancer who did not carry mutations in BRCA1, BRCA2, MLH1, MSH2, MSH6, TP53 or APC genes...
2016: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/26687385/screening-for-germline-mutations-in-breast-ovarian-cancer-susceptibility-genes-in-high-risk-families-in-israel
#20
Tamar Yablonski-Peretz, Shani Paluch-Shimon, Lior Soussan Gutman, Yulia Kaplan, Addie Dvir, Inbal Barnes-Kedar, Luna Kadouri, Valeriya Semenisty, Noa Efrat, Victoria Neiman, Yafit Glasser, Rachel Michaelson-Cohen, Lior Katz, Bella Kaufman, Talia Golan, Orit Reish, Ayala Hubert, Tamar Safra, Yuval Yaron, Eitan Friedman
We evaluated the clinical utility of screening for mutations in 34 breast/ovarian cancer susceptibility genes in high-risk families in Israel. Participants were recruited from 12, 2012 to 6, 2015 from 8 medical centers. All participants had high breast/ovarian cancer risk based on personal and family history. Genotyping was performed with the InVitae™ platform. The study was approved by the ethics committees of the participating centers; all participants gave a written informed consent before entering the study...
January 2016: Breast Cancer Research and Treatment
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