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Tytuł pozycji:

BRCA mutation characteristics in a series of index cases of breast cancer selected independent of family history.

Tytuł :
BRCA mutation characteristics in a series of index cases of breast cancer selected independent of family history.
Autorzy :
Bisgin A; Faculty of Medicine, Medical Genetics Department of Balcali Clinic and Hospital, Cukurova University, Adana, Turkey.; Cukurova University AGENTEM (Adana Genetic Disease Diagnosis and Treatment Center), Adana, Turkey.
Boga I; Cukurova University AGENTEM (Adana Genetic Disease Diagnosis and Treatment Center), Adana, Turkey.; Department of Biotehnology, Institute of Science, Cukurova University, Adana, Turkey.
Yalav O; General Surgey Department of Balcali Clinis and Hospital, Faculty of Medicine, Cukurova Unversity, Adana, Turkey.
Sonmezler O; Cukurova University AGENTEM (Adana Genetic Disease Diagnosis and Treatment Center), Adana, Turkey.; Department of Biotehnology, Institute of Science, Cukurova University, Adana, Turkey.
Tug Bozdogan S; Faculty of Medicine, Medical Genetics Department of Balcali Clinic and Hospital, Cukurova University, Adana, Turkey.; Cukurova University AGENTEM (Adana Genetic Disease Diagnosis and Treatment Center), Adana, Turkey.
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Źródło :
The breast journal [Breast J] 2019 Sep; Vol. 25 (5), pp. 1029-1033. Date of Electronic Publication: 2019 Jun 22.
Typ publikacji :
Journal Article
Język :
English
Imprint Name(s) :
Publication: Malden, MA : Blackwell Science
Original Publication: Cambridge, MA : Blackwell Science, c1995-
MeSH Terms :
Genes, BRCA1*
Genes, BRCA2*
Mutation*
Breast Neoplasms/*genetics
Breast Neoplasms/etiology ; Female ; Genetic Predisposition to Disease ; Humans
References :
World Health Organization. http://www.who.int/cancer/events/breast_cancer_month/en/2017.
DeSantis C, Siegel R, Jemal A. Breast Cancer Facts & Figures 2015-2016. Atlanta, GA: American Cancer Society. Inc; 2015:1-44.
Lakhani SR, Gusterson BA, Jacquemier J, et al. The pathology of familial breast cancer: histological features of cancers in families not attributable to mutations in BRCA1 or BRCA2. Clin Cancer Res. 2000;3:782-789.
Stratton MR. Pathology of familial breast cancer: differences between breast cancers in carriers of BRCA1 or BRCA2 mutations and sporadic cases. Lancet. 1997;9064:1505-1510.
Petrucelli N, Daly MB, Feldman GL. Hereditary breast and ovarian cancer due to mutations in BRCA1 and BRCA2. Genet Med. 2010;5:245.
World Cancer Research Fund International. www.wcrf.org/int/cancer-facts-figures2017.
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D'Argenio V, Esposito MV, Telese A, et al. The molecular analysis of BRCA1 and BRCA2: next-generation sequencing supersedes conventional approaches. Clin Chim Acta. 2015;221-225.
Antoniou A, Pharoah P, Narod S, et al. Average risks of breast and ovarian cancer associated with BRCA1 or BRCA2 mutations detected in case series unselected for family history: a combined analysis of 22 studies. Am J Hum Genet. 2003;5:1117-1130.
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Cvelbar M, Hocevar M, Novakovic S, Stegel V, Perhavec A, Krajc M. Genetic counselling, BRCA1/2 status and clinico-pathologic characteristics of patients with ovarian cancer before 50 years of age. Radiol Oncol. 2017;2:187-194.
Alvarez C, Tapia T, Perez-Moreno E, et al. BRCA1 and BRCA2 founder mutations account for 78% of germline carriers among hereditary breast cancer families in Chile. Oncotarget. 2017;43:74233.
Brianese RC, Nakamura K, Ramalho RF, et al. BRCA1 deficiency is a recurrent event in early-onset triple-negative breast cancer: a comprehensive analysis of germline mutations and somatic promoter methylation. Breast Cancer Res Treat. 2018;167(3):803-814.
Burke W, Culver JO, Bowen D, et al. Genetic counseling for women with an intermediate family history of breast cancer. Am J Med Genet. 2000;5:361-368.
Contributed Indexing :
Keywords: BRCA1*; BRCA2*; breast cancer*
Entry Date(s) :
Date Created: 20190623 Date Completed: 20200326 Latest Revision: 20200326
Update Code :
20201218
DOI :
10.1111/tbj.13400
PMID :
31228304
Czasopismo naukowe
Certain genetic predisposition factors, such as BRCA1 and BRCA2 mutations play a pivotal role in familial breast cancer development in both males and females. Due to this, the importance and necessity of genetic screening to identify mutations affecting the population is paramount. Undergoing genetic screenings allows for a more knowledgeable risk assessment for the patients and their care providers. The aim of this study was to evaluate the prevalence of BRCA1/BRCA2 mutated genes in the Turkish population among unselected patients. To identify the molecular markers, we utilized a gene panel analysis consisting of BRCA1 and BRCA2 genes, with a next generation sequencing platform (MiSeq System, Illumina). Sequencing was performed using leukocyte DNA from breast cancer patients. In-silico analysis for novel mutations was carried out using SIFT, PolyPhen2 and MutationTaster. BRCA1 and BRCA2 pathogenic variants were identified in 18 of 129 (14%) patients among the study population; of those 18 patients, seven (39%) were found in the BRCA1 gene and 11 (61%) in the BRCA2 gene. Ten of the eleven BRCA2 variants (90%) were novel mutations. Four of ten (40%) of the novel mutations were determined to be deleterious and six out of ten (60%) were identified as single nucleotide variations. Clinically significant mutations of the BRCA1/BRCA2 genes are related to an increased susceptibility for breast cancer. There is however, little known about BRCA mutations amongst the general population. Thus, it is important that patients are able to undergo genetic screenings and counseling. This also allows for greater care from health care providers and can only facilitate disease prevention which in turn can lead to a decreased cancer morbidity rate.
(© 2019 Wiley Periodicals, Inc.)
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