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Familial Cancer

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https://www.readbyqxmd.com/read/28710566/remarkable-effects-of-imatinib-in-a-family-with-young-onset-gastrointestinal-stromal-tumors-and-cutaneous-hyperpigmentation-associated-with-a-germline-kit-trp557arg-mutation-case-report-and-literature-overview
#1
S Farag, L E van der Kolk, H H van Boven, A C J van Akkooi, G L Beets, J W Wilmink, N Steeghs
Gastrointestinal stromal tumors (GISTs) occur mostly sporadically. GISTs associated with a familial syndrome are very rare and are mostly wild type for KIT and platelet-derived growth factor alpha (PDGFRA). To date 35 kindreds and 8 individuals have been described with GISTs associated with germline KIT mutations. This is the third family described with a germline p.Trp557Arg mutation in exon 11 of the KIT gene. The effect of imatinib in patients harboring a germline KIT mutation has been rarely described. Moreover, in some studies imatinib treatment was withheld considering the lack of evidence for efficacy of this treatment in GIST patients harboring a germline KIT mutation...
July 14, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28695303/a-comparison-of-cosegregation-analysis-methods-for-the-clinical-setting
#2
John Michael O Rañola, Quanhui Liu, Elisabeth A Rosenthal, Brian H Shirts
Quantitative cosegregation analysis can help evaluate the pathogenicity of genetic variants. However, genetics professionals without statistical training often use simple methods, reporting only qualitative findings. We evaluate the potential utility of quantitative cosegregation in the clinical setting by comparing three methods. One thousand pedigrees each were simulated for benign and pathogenic variants in BRCA1 and MLH1 using United States historical demographic data to produce pedigrees similar to those seen in the clinic...
July 10, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28687971/the-spectrum-of-genetic-variants-in-hereditary-pancreatic-cancer-includes-fanconi-anemia-genes
#3
Thomas P Slavin, Susan L Neuhausen, Bita Nehoray, Mariana Niell-Swiller, Ilana Solomon, Christina Rybak, Kathleen Blazer, Aaron Adamson, Kai Yang, Sharon Sand, Nancy Guerrero-Llamas, Danielle Castillo, Josef Herzog, Xiwei Wu, Shu Tao, Shivali Raja, Vincent Chung, Gagandeep Singh, Sue Nadesan, Sandra Brown, Marcia Cruz-Correa, Gloria M Petersen, Jeffrey Weitzel
Approximately 5-10% of all pancreatic cancer patients carry a predisposing mutation in a known susceptibility gene. Since >90% of patients present with late stage disease, it is crucial to identify high risk individuals who may be amenable to early detection or other prevention. To explore the spectrum of hereditary pancreatic cancer susceptibility, we evaluated germline DNA from pancreatic cancer participants (n = 53) from a large hereditary cancer registry. For those without a known predisposition mutation gene (n = 49), germline next generation sequencing was completed using targeted capture for 706 candidate genes...
July 8, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28687970/association-of-genetic-variations-in-rtn4-3-utr-with-risk-for-clear-cell-renal-cell-carcinoma
#4
Yan Pu, Peng Chen, Bin Zhou, Peng Zhang, Yanyun Wang, Yaping Song, Lin Zhang
Nogo proteins play an important role in the apoptosis of cells, especially in tumor cells. The present study was conducted to evaluate whether the TATC (rs71682980) and CAA (rs34917480) insertion/deletion polymorphisms of RTN4 3'-UTR are associated with clear cell renal cell carcinoma (ccRCC). These two polymorphisms were genotyped in 308 ccRCC patients and 466 healthy controls by polymerase chain reaction polyacrylamide gel electrophoresis (PCR-PAGE). Significantly reduced ccRCC risk was observed to be associated with the TATCins/ins genotype carriers (Versus TATCdel/del: adjusted OR 0...
July 7, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28685475/a-new-hereditary-colorectal-cancer-network-in-the-middle-east-and-eastern-mediterranean-countries-to-improve-care-for-high-risk-families
#5
Zeinab Ghorbanoghli, Carol Jabari, Walid Sweidan, Wail Hammoudeh, George Cortas, Ala I Sharara, Amal Abedrabbo, Ijad Hourani, Bahareh Mahjoubi, Keivan Maijdzadeh, Nurdan Tözün, Hadia Ziada-Bouchaar, Waseem Hamoudi, Osama Diab, Hamid Reza Khorram Khorshid, Henry Lynch, Hans Vasen
Colorectal cancer (CRC) has a very high incidence in the western world. Data from registries in the Middle East showed that the incidence of CRC is relatively low in these countries. However, these data also showed that CRC incidence has increased substantially over the past three decades and that a high proportion of cases are diagnosed at an early age (<50 years). In view of these findings, more attention should be paid to prevention. Because of the often limited financial resources, focused screening of individuals with hereditary CRC, in particular those with Lynch syndrome, appears to be the most cost-effective strategy...
July 6, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28685474/novel-brca1-splice-site-mutation-in-ovarian-cancer-patients-of-slavic-origin
#6
Ana Krivokuca, Vita Setrajcic Dragos, Ljiljana Stamatovic, Ana Blatnik, Ivana Boljevic, Vida Stegel, Jelena Rakobradovic, Petra Skerl, Stevo Jovandic, Mateja Krajc, Mirjana Brankovic Magic, Srdjan Novakovic
Mutations in breast cancer susceptibility gene 1 (BRCA1) lead to defects in a number of cellular pathways including DNA damage repair and transcriptional regulation, resulting in the elevated genome instability and predisposing to breast and ovarian cancers. We report a novel mutation LRG_292t1:c.4356delA,p.(Ala1453Glnfs*3) in the 12th exon of BRCA1, in the splice site region near the donor site of intron 12. It is a frameshift mutation with the termination codon generated on the third amino acid position from the site of deletion...
July 6, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28681140/increased-access-to-tp53-analysis-through-breast-cancer-multi-gene-panels-clinical-considerations
#7
LETTER
Jacopo Azzollini, Milena Mariani, Bernard Peissel, Siranoush Manoukian
No abstract text is available yet for this article.
July 5, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28674754/issues-related-to-family-history-of-cancer-at-the-end-of-life-a-palliative-care-providers-survey
#8
Catherine Gonthier, Sylvie Pelletier, Pierre Gagnon, Ana Marin, Jocelyne Chiquette, Bruno Gagnon, Louis Roy, Jude Emmanuel Cléophat, Yann Joly, Michel Dorval
Addressing the concerns of end-of-life patients or their relatives about their family history of cancer could benefit patients and family members. Little is known about how palliative care providers respond to these concerns. The purpose of this pilot study was to assess palliative care providers' knowledge about familial and hereditary cancers and explore their exposure to patients' and relatives' concerns about their family history of cancer, and their self-perceived ability to deal with such concerns. A cross-sectional survey was conducted in the Quebec City (Canada) catchment area among palliative care professionals...
July 3, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28660566/screening-of-bmpr1a-for-pathogenic-mutations-in-familial-colorectal-cancer-type-x-families-from-newfoundland
#9
Daniel R Evans, Jane S Green, Michael O Woods
The Canadian province of Newfoundland and Labrador (NL) reports one of the highest incidence rates of familial colorectal cancer (CRC) worldwide. The NL population is an invaluable resource for studying genetic disorders because of a unique ancestry, and a willingness to participate in research studies. Familial colorectal cancer type X (FCCTX) describes a cluster of families with strong predisposition for CRC, of unknown etiology. A putative link between FCCTX and BMPR1a mutations has been identified in the Finnish population; however these findings have not been independently replicated...
June 28, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28643016/screening-for-lynch-syndrome-in-young-saudi-colorectal-cancer-patients-using-microsatellite-instability-testing-and-next-generation-sequencing
#10
Masood Alqahtani, Caitlin Edwards, Natasha Buzzacott, Karen Carpenter, Khalid Alsaleh, Abdulmalik Alsheikh, Waleed Abozeed, Miral Mashhour, Afnan Almousa, Yousef Housawi, Shareefa Al Hawwaj, Barry Iacopetta
Individuals with Lynch syndrome (LS) have germline variants in DNA mismatch repair (MMR) genes that confer a greatly increased risk of colorectal cancer (CRC), often at a young age. Identification of these individuals has been shown to increase their survival through improved surveillance. We previously identified 33 high risk cases for LS in the Saudi population by screening for microsatellite instability (MSI) in the tumor DNA of 284 young CRC patients. The aim of the present study was to identify MMR gene variants in this cohort of patients...
June 22, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28643015/the-role-of-screening-mri-in-the-era-of-next-generation-sequencing-and-moderate-risk-genetic-mutations
#11
REVIEW
Sarah Macklin, Jennifer Gass, Ghada Mitri, Paldeep S Atwal, Stephanie Hines
With the advent of next-generation sequencing, the ability to rapidly analyze numerous genes simultaneously has led to the creation of large cancer gene panels. Some of these genes, like BRCA1 and BRCA2, have been heavily researched and have well-established management guidelines. Other more newly established genes, like ATM, CHEK2, and PALB2, have previously had less robust research surrounding them which has limited the ability to create accurate risk estimates. With their inclusion on gene panels, there has been more pressure to produce management guidelines for patients discovered to carry pathogenic variants in these genes...
June 22, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28623477/use-of-the-boadicea-web-application-in-clinical-practice-appraisals-by-clinicians-from-various-countries
#12
Anne Brédart, Jean-Luc Kop, Antonis C Antoniou, Alex P Cunningham, Antoine De Pauw, Marc Tischkowitz, Hans Ehrencrona, Sylvie Dolbeault, Léonore Robieux, Kerstin Rhiem, Douglas F Easton, Peter Devilee, Dominique Stoppa-Lyonnet, Rita Schmutlzer
The 'BOADICEA' Web Application (BWA) used to assess breast cancer risk, is currently being further developed, to integrate additional genetic and non-genetic factors. We surveyed clinicians' perceived acceptability of the existing BWA v3. An online survey was conducted through the BOADICEA website, and the British, Dutch, French and Swedish genetics societies. Cross-sectional data from 443 participants who provided at least 50% responses were analysed. Respondents varied in age and, clinical seniority, but mainly comprised women (77%) and genetics professionals (82%)...
June 16, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28623476/early-onset-renal-cell-carcinoma-in-an-adolescent-girl-with-germline-flcn-exon-5-deletion
#13
Meike Schneider, Katja Dinkelborg, Xiuli Xiao, Gayun Chan-Smutko, Kathleen Hruska, Dongli Huang, Pallavi Sagar, Mukesh Harisinghani, Othon Iliopoulos
Birt-Hogg-Dube (BHD) disease is an autosomal dominant cancer syndrome characterized by benign skin tumors, renal cancer and spontaneous pneumothorax and is caused by mutations in the Folliculin (FLCN) gene. Benign skin tumors and pneumothorax occur in the majority of patients affected by BHD syndrome, but only 30-45% of them develop renal cell carcinoma (RCC) with a median age of diagnosis at 48. The earliest onset of RCC in a BHD patient has been reported at age 20. Here we report a case of a 14 year-old patient with germline FLCN mutation leading to an early-onset bulky RCC that could not be classified strictly according to existing histological types...
June 16, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28616688/somatic-mutations-of-the-coding-microsatellites-within-the-beta-2-microglobulin-gene-in-mismatch-repair-deficient-colorectal-cancers-and-adenomas
#14
Mark Clendenning, Alvin Huang, Harindra Jayasekara, Marie Lorans, Susan Preston, Neil O'Callaghan, Bernard J Pope, Finlay A Macrae, Ingrid M Winship, Roger L Milne, Graham G Giles, Dallas R English, John L Hopper, Aung K Win, Mark A Jenkins, Melissa C Southey, Christophe Rosty, Daniel D Buchanan
In colorectal cancers (CRCs) with tumour mismatch repair (MMR) deficiency, genes involved in the host immune response that contain microsatellites in their coding regions, including beta-2-microglobulin (B2M), can acquire mutations that may alter the immune response, tumour progression and prognosis. We screened the coding microsatellites within B2M for somatic mutations in MMR-deficient CRCs and adenomas to determine associations with tumour subtypes, clinicopathological features and survival. Incident MMR-deficient CRCs from Australasian Colorectal Cancer Family Registry (ACCFR) and the Melbourne Collaborative Cohort Study participants (n = 144) and 63 adenomas from 41 MMR gene mutation carriers from the ACCFR were screened for somatic mutations within five coding microsatellites of B2M...
June 14, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28608266/potentially-pathogenic-germline-chek2-c-319-2t-a-among-multiple-early-onset-cancer-families
#15
Mev Dominguez-Valentin, Sigve Nakken, Hélène Tubeuf, Daniel Vodak, Per Olaf Ekstrøm, Anke M Nissen, Monika Morak, Elke Holinski-Feder, Alexandra Martins, Pål Møller, Eivind Hovig
To study the potential contribution of genes other than BRCA1/2, PTEN, and TP53 to the biological and clinical characteristics of multiple early-onset cancers in Norwegian families, including early-onset breast cancer, Cowden-like and Li-Fraumeni-like syndromes (BC, CSL and LFL, respectively). The Hereditary Cancer Biobank from the Norwegian Radium Hospital was used to identify early-onset BC, CSL or LFL for whom no pathogenic variants in BRCA1/2, PTEN, or TP53 had been found in routine diagnostic DNA sequencing...
June 12, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28608265/constitutional-mismatch-repair-deficiency-and-lynch-syndrome-among-consecutive-arab-bedouins-with-colorectal-cancer-in-israel
#16
Naim Abu Freha, Yaara Leibovici Weissman, Alexander Fich, Inbal Barnes Kedar, Marisa Halpern, Ignacio Sztarkier, Doron M Behar, Orly Arbib Sneh, Alex Vilkin, Hagit N Baris, Rachel Gingold, Flavio Lejbkowicz, Yaron Niv, Yael Goldberg, Zohar Levi
We assessed the molecular characteristics and the frequency of mutations in mismatch-repair genes among Bedouin patients with colorectal cancer (CRC) in Israel. Bedouin patients with a diagnosis of CRC at a major hospital in the southern part of Israel were deemed eligible for this study. The primary screening method was immunohistochemical staining for mismatch-repair proteins (MLH1, MSH2, MSH6, and PMS2). For subjects with abnormal immunohistochemical staining, we performed microsatellite instability (MSI) analyses, and for tumors with a loss of MLH1 expression we also performed BRAF testing...
June 12, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28600700/co-occurrence-of-lynch-syndrome-and-juvenile-polyposis-syndrome-confirmed-by-multigene-panel-testing
#17
Rachel Silva-Smith, Daniel A Sussman
Through germline multigene panel testing, we discovered the co-occurrence of Lynch syndrome due to a PMS2 mutation and juvenile polyposis syndrome due to a BMPR1A mutation in a young man with synchronous bladder and colorectal cancers and a family history of colorectal polyps. To our knowledge, this is the first report of an individual having these two hereditary colorectal cancer syndromes. This discovery highlights the benefit of multigene testing over traditional stepwise genetic testing, particularly when a clinical presentation suggests more than one underlying genetic cause...
June 9, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28600699/a-single-visit-multidisciplinary-model-for-managing-patients-with-mutations-in-moderate-and-high-risk-genes-in-a-community-practice-setting
#18
Michael P O'Leary, Bryan S Goldner, Sridevi Abboy, Philip D Mercado, Hong Yoon Plurad
The introduction of screening for multiple high and moderate risk mutations in genes has resulted in a complex approach to patient care involving multiple disciplines. We sought to describe the feasibility of a single visit multidisciplinary approach to the management of patients with an identified high/moderate risk gene mutation. Patients who presented to our community hospital over a 1-year period who were found to have a high/moderate risk genetic mutation on a screening panel were referred to the High Risk Genetic Clinic...
June 9, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28573495/rnf43-is-mutated-less-frequently-in-lynch-syndrome-compared-with-sporadic-microsatellite-unstable-colorectal-cancers
#19
Lochlan J Fennell, Mark Clendenning, Diane M McKeone, Saara H Jamieson, Samanthy Balachandran, Jennifer Borowsky, John Liu, Futoshi Kawamata, Catherine E Bond, Christophe Rosty, Matthew E Burge, Daniel D Buchanan, Barbara A Leggett, Vicki L J Whitehall
The WNT signaling pathway is commonly altered during colorectal cancer development. The E3 ubiquitin ligase, RNF43, negatively regulates the WNT signal through increased ubiquitination and subsequent degradation of the Frizzled receptor. RNF43 has recently been reported to harbor frequent truncating frameshift mutations in sporadic microsatellite unstable (MSI) colorectal cancers. This study assesses the relative frequency of RNF43 mutations in hereditary colorectal cancers arising in the setting of Lynch syndrome...
June 1, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28573494/a-novel-tp53-germline-inframe-deletion-identified-in-a-spanish-series-of-li-fraumeni-syndrome-suspected-families
#20
Patricia Llovet, Francisco J Illana, Lorena Martín-Morales, Miguel de la Hoya, Pilar Garre, M Dolores Ibañez-Royo, Pedro Pérez-Segura, Trinidad Caldés, Vanesa García-Barberán
Li-Fraumeni syndrome (LFS) is an autosomal dominant, inherited tumor predisposition syndrome associated with heterozygous germline mutations in the TP53 gene. The molecular diagnosis of LFS is important to develop strategies for early detection and access to the genetic counseling. Our study evaluated germline TP53 mutations in Spanish families with a history suggestive of LFS. Germline TP53 alterations in 22 families with a history suggestive of LFS were evaluated by Sanger sequencing and multiplex ligation-dependent probe amplification...
June 1, 2017: Familial Cancer
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