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Das S, Devireddy R, Gartia MR. Surface Plasmon Resonance (SPR) Sensor for Cancer Biomarker Detection. BIOSENSORS 2023; 13:396. [PMID: 36979608 PMCID: PMC10046379 DOI: 10.3390/bios13030396] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/12/2023] [Accepted: 03/15/2023] [Indexed: 06/18/2023]
Abstract
A biomarker is a physiological observable marker that acts as a stand-in and, in the best-case scenario, forecasts a clinically significant outcome. Diagnostic biomarkers are more convenient and cost-effective than directly measuring the ultimate clinical outcome. Cancer is among the most prominent global health problems and a major cause of morbidity and death globally. Therefore, cancer biomarker assays that are trustworthy, consistent, precise, and verified are desperately needed. Biomarker-based tumor detection holds a lot of promise for improving disease knowledge at the molecular scale and early detection and surveillance. In contrast to conventional approaches, surface plasmon resonance (SPR) allows for the quick and less invasive screening of a variety of circulating indicators, such as circulating tumor DNA (ctDNA), microRNA (miRNA), circulating tumor cells (CTCs), lipids, and proteins. With several advantages, the SPR technique is a particularly beneficial choice for the point-of-care identification of biomarkers. As a result, it enables the timely detection of tumor markers, which could be used to track cancer development and suppress the relapse of malignant tumors. This review emphasizes advancements in SPR biosensing technologies for cancer detection.
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Dharmarajan A, Gopinath V, Keloth Nayanar S, Velandi Kunnummal S, Balasubramanian S, Roshan Valiyaparambil Gopi D. Genomic analysis of breast cancer patients from Kerala: A novel BRCA1 mutation detected. Breast Dis 2023; 42:341-347. [PMID: 37980640 DOI: 10.3233/bd-220002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
BACKGROUND Breast cancer is the most common cancer among females, with an incidence of 6,41,000 cases annually. The genetic makeup of the individuals, ethnicity, geographical location, lifestyle, and BMI are some well-described factors associated with breast cancer. It is well known that pathogenic variants in BRCA1 and BRCA2 are associated with a majority of hereditary breast cancer. Genome-wide association studies (GWAS) have identified more than 80 germline susceptibility loci responsible for hereditary breast cancer. METHODS In the present study, analysis of 94 genes associated with hereditary cancer was performed using next generation sequencing (NGS) in twelve patients having breast cancer and suspected with hereditary association. RESULTS Four out of twelve (33%) patients harbored pathogenic mutation of the BRCA1 gene. Two patients was identified p. E23Vfs*17 mutation in BRCA1, one patient had p.Glu1580Gln in BRCA1, and a novel frameshift variant p.T1456Ifs*9(c.4367Cdel) in one patient. CONCLUSION In the present study, out of four detected mutations in the BRCA1 gene, three were known and one was a novel BRCA1 mutation. It is advised to perform NGS-based genome sequencing to identify the genetic predisposition in breast cancer patients.
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Affiliation(s)
- Adarsh Dharmarajan
- Department of Surgical Oncology, Malabar Cancer Centre, Moozhikkara P.O., Thalassery, Kerala, India
| | - Vipin Gopinath
- Division of Genetics and Cytogenetics, Department of Clinical Lab Services and Translational Research, Malabar Cancer Centre, Moozhikkara P.O., Thalassery, Kerala, India
| | - Sangeetha Keloth Nayanar
- Division of Oncopathology, Department of Clinical Lab Services and Translational Research, Malabar Cancer Centre, Moozhikkara P.O., Thalassery, Kerala, India
| | | | | | - Deepak Roshan Valiyaparambil Gopi
- Division of Genetics and Cytogenetics, Department of Clinical Lab Services and Translational Research, Malabar Cancer Centre, Moozhikkara P.O., Thalassery, Kerala, India
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Li Y, Chen L, Lv J, Chen X, Zeng B, Chen M, Guo W, Lin Y, Yu L, Hou J, Li J, Zhou P, Zhang W, Li S, Jin X, Cai W, Zhang K, Huang Y, Wang C, Fu F. Clinical application of artificial neural network (ANN) modeling to predict BRCA1/2 germline deleterious variants in Chinese bilateral primary breast cancer patients. BMC Cancer 2022; 22:1125. [PMID: 36324133 PMCID: PMC9628090 DOI: 10.1186/s12885-022-10160-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 09/19/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Bilateral breast cancer (BBC), as well as ovarian cancer, are significantly associated with germline deleterious variants in BRCA1/2, while BRCA1/2 germline deleterious variants carriers can exquisitely benefit from poly (ADP-ribose) polymerase (PARP) inhibitors. However, formal genetic testing could not be carried out for all patients due to extensive use of healthcare resources, which in turn results in high medical costs. To date, existing BRCA1/2 deleterious variants prediction models have been developed in women of European or other descent who are quite genetically different from Asian population. Therefore, there is an urgent clinical need for tools to predict the frequency of BRCA1/2 deleterious variants in Asian BBC patients balancing the increased demand for and cost of cancer genetics services. METHODS The entire coding region of BRCA1/2 was screened for the presence of germline deleterious variants by the next generation sequencing in 123 Chinese BBC patients. Chi-square test, univariate and multivariate logistic regression were used to assess the relationship between BRCA1/2 germline deleterious variants and clinicopathological characteristics. The R software was utilized to develop artificial neural network (ANN) and nomogram modeling for BRCA1/2 germline deleterious variants prediction. RESULTS Among 123 BBC patients, we identified a total of 20 deleterious variants in BRCA1 (8; 6.5%) and BRCA2 (12; 9.8%). c.5485del in BRCA1 is novel frameshift deleterious variant. Deleterious variants carriers were younger at first diagnosis (P = 0.0003), with longer interval between two tumors (P = 0.015), at least one medullary carcinoma (P = 0.001), and more likely to be hormone receptor negative (P = 0.006) and HER2 negative (P = 0.001). Area under the receiver operating characteristic curve was 0.903 in ANN and 0.828 in nomogram modeling individually (P = 0.02). CONCLUSION This study shows the spectrum of the BRCA1/2 germline deleterious variants in Chinese BBC patients and indicates that the ANN can accurately predict BRCA deleterious variants than conventional statistical linear approach, which confirms the BRCA1/2 deleterious variants carriers at the lowest costs without adding any additional examinations.
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Affiliation(s)
- Yan Li
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Lili Chen
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Jinxing Lv
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
- Sichuan Cancer Center, School of Medicine, Sichuan Cancer Hospital & Institute, University of Electronic Science and Technology of China, 610000, Chengdu, China
| | - Xiaobin Chen
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Bangwei Zeng
- Nosocomial Infection Control Branch, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, China
| | - Minyan Chen
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Wenhui Guo
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Yuxiang Lin
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Liuwen Yu
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Jialin Hou
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Jing Li
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Peng Zhou
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Wenzhe Zhang
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Shengmei Li
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Xuan Jin
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Weifeng Cai
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Kun Zhang
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Yeyuan Huang
- Fujian Medical University, 350001, Fuzhou, Fujian Province, China
| | - Chuan Wang
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China.
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China.
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China.
| | - Fangmeng Fu
- Department of Breast Surgery, Fujian Medical University Union Hospital, No.29, Xin Quan Road, Gulou District, 350001, Fuzhou, Fujian Province, China.
- Department of General Surgery, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian Province, China.
- Breast Cancer Institute, Fujian Medical University, 350001, Fuzhou, Fujian Province, China.
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Megid TBC, Barros-Filho MC, Pisani JP, Achatz MI. Double heterozygous pathogenic variants prevalence in a cohort of patients with hereditary breast cancer. Front Oncol 2022; 12:873395. [PMID: 36003761 PMCID: PMC9393394 DOI: 10.3389/fonc.2022.873395] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 07/14/2022] [Indexed: 11/25/2022] Open
Abstract
Hereditary breast cancer (BC) corresponds to 5% of all BC and a larger parcel of early-onset disease. The incorporation of next-generation sequencing (NGS) techniques reduced the cost of molecular testing and allowed the inclusion of additional cancer predisposition genes in panels that are more comprehensive. This enabled the identification of germline pathogenic variants in carriers and the introduction of risk-reducing strategies. It also resulted in the identification of the co-occurrence of more than one germline pathogenic variant in BC genes in some families. This is a rare event, and there are few reports on its impact on cancer risk. We conducted a single-institution retrospective study in which 1,156 women with early onset BC and/or a family history of cancer were tested by a germline multi-gene hereditary cancer panel. Germline pathogenic variants in high- and/or moderate-penetrance BC genes were identified in 19.5% of the individuals (n = 226). The most frequent variants were found in TP53 (69 of 226; 55 of them represented by p.R337H), BRCA1 (47 of 226), and BRCA2 (41 of 226). Double heterozygous (DH) variants were detected in 14 cases, representing 1.2% of all individuals assessed. There were no significant differences in age of BC onset and risk for bilateral BC in DH carriers when compared with those with one germline variant.
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Karmakar S, Purkayastha K, Dhar R, Pethusamy K, Srivastava T, Shankar A, Rath G. The issues and challenges with cancer biomarkers. J Cancer Res Ther 2022; 19:S20-S35. [PMID: 37147979 DOI: 10.4103/jcrt.jcrt_384_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A biomarker is a measurable indicator used to distinguish precisely/objectively either normal biological state/pathological condition/response to a specific therapeutic intervention. The use of novel molecular biomarkers within evidence-based medicine may improve the diagnosis/treatment of disease, improve health outcomes, and reduce the disease's socio-economic impact. Presently cancer biomarkers are the backbone of therapy, with greater efficacy and better survival rates. Cancer biomarkers are extensively used to treat cancer and monitor the disease's progress, drug response, relapses, and drug resistance. The highest percent of all biomarkers explored are in the domain of cancer. Extensive research using various methods/tissues is carried out for identifying biomarkers for early detection, which has been mostly unsuccessful. The quantitative/qualitative detection of various biomarkers in different tissues should ideally be done in accordance with qualification rules laid down by the Early Detection Research Network (EDRN), Program for the Assessment of Clinical Cancer Tests (PACCT), and National Academy of Clinical Biochemistry. Many biomarkers are presently under investigation, but lacunae lie in the biomarker's sensitivity and specificity. An ideal biomarker should be quantifiable, reliable, of considerable high/low expression, correlate with the outcome progression, cost-effective, and consistent across gender and ethnic groups. Further, we also highlight that these biomarkers' application remains questionable in childhood malignancies due to the lack of reference values in the pediatric population. The development of a cancer biomarker stands very challenging due to its complexity and sensitivity/resistance to the therapy. In past decades, the cross-talks between molecular pathways have been targeted to study the nature of cancer. To generate sensitive and specific biomarkers representing the pathogenesis of specific cancer, predicting the treatment responses and outcomes would necessitate inclusion of multiple biomarkers.
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Huang KL, Liu YL, Hsu YY, Kuo WL. Retrospective Analysis of Clinicopathological Features and Familial Cancer History of Synchronous Bilateral Breast Cancer. Healthcare (Basel) 2021; 9:healthcare9091203. [PMID: 34574977 PMCID: PMC8470905 DOI: 10.3390/healthcare9091203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/20/2021] [Accepted: 09/01/2021] [Indexed: 11/17/2022] Open
Abstract
Bilateral breast cancer is a strong predictor of BRCA 1/2 mutation and hence one criterion indicated for hereditary genetic testing. The purpose of this study is to assess the characteristics of synchronous bilateral breast cancer (SBBC) and its association with personal and familial cancer traits. Patients diagnosed with SBBC in our institute between 1992 and 2018 were retrospectively reviewed, and the information of clinicopathological features, personal and family cancer history were analyzed. Of the 307 SBBCs enrolled, the growing case number generally aligned with the regional breast cancer incidence after the era of population-based mammography screening. SBBC patients had similar cancer stages but worse survival outcomes than those in the standard scenario. A total of 42.0% had mixed pathological diagnoses, and 22.8% had discordant immunohistochemistry (IHC) subtypes from both sides, which contributed to treatment challenges. The correlation of SBBC with hereditary breast and ovarian cancer (HBOC) syndrome was strongly implied, as 20.7% of our SBBC patients with known familial cancer histories had HOBC-related familial cancers (breast, ovarian, or prostate cancers). These findings highlight the need for genetic counseling and germline mutation testing in patients with SBBC. Early PARP inhibitor treatment should also be considered in high-risk cases for outcome improvement.
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Affiliation(s)
- Kai-Ling Huang
- Department of Medical Education, Chang Gung Memorial Hospital, Linkou and Taipei Medical Center, Chang Gung Medical Foundation, Taoyuan 33305, Taiwan;
- Department of Orthopedics, Kaohsiung Veterans General Hospital, Kaohsiung 81362, Taiwan
| | - Yu-Ling Liu
- Breast Surgery Division, General Surgery, Department of Surgery, Chang Gung Memorial Hospital, Linkou and Taipei Medical Center, Chang Gung Medical Foundation, Taipei 33305, Taiwan;
| | - Ya-Ying Hsu
- Chang Gung University, Taoyuan 33302, Taiwan;
| | - Wen-Ling Kuo
- Breast Surgery Division, General Surgery, Department of Surgery, Chang Gung Memorial Hospital, Linkou and Taipei Medical Center, Chang Gung Medical Foundation, Taipei 33305, Taiwan;
- Chang Gung University, Taoyuan 33302, Taiwan;
- Correspondence: ; Tel.: +886-3281200 (ext. 3636)
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Jiang H, Zhang R, Liu X, Ran R, Zhang J, Liu Y, Gui X, Chen Y, Li K, Shao B, Yan Y, Liang X, Song G, Di L, Li H. Bilateral breast cancer in China: A 10-year single-center retrospective study (2006-2016). Cancer Med 2021; 10:6089-6098. [PMID: 34346560 PMCID: PMC8419776 DOI: 10.1002/cam4.4141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 04/09/2021] [Accepted: 07/02/2021] [Indexed: 01/03/2023] Open
Abstract
Bilateral breast cancer (BBC) is an uncommon subset of breast cancer (BC), and it may present as synchronous bilateral breast cancer (sBBC) or metachronous bilateral breast cancer (mBBC). Through this study, we aimed to evaluate the proportion of BBC in BC and compare the clinicopathological characteristics, treatment, and outcomes of sBBC and mBBC at an academic cancer center in China. Patients with BC consecutively treated between 2006 and 2016 were retrospectively reviewed. Patients with BBC were included. In total, 3924 patients with BC were analyzed and 127 patients with BBC (28 sBBC, 99 mBBC) with a median follow-up of 98 months were identified. The proportion of BBC was 3.2% (0.7%, sBBC; 2.5%, mBBC). The median age at the first diagnosis of mBBC was significantly younger than that at the first diagnosis of sBBC (p = 0.027). Patients diagnosed as having sBBC were more likely to have a positive family history (p = 0.047). The first tumors of mBBC were detected at a significantly earlier tumor stage compared with those of sBBC (p = 0.028). The concordance rates of histopathologic type in the first and second tumors were 60.7% and 58.0% in sBBC and mBBC, respectively. sBBC had a significantly poorer disease-free survival than mBBC did (p = 0.001). BBC is a rare disease affecting the Chinese population. sBBC is associated with a greater prevalence of a family history of breast cancer and poorer prognosis, compared with mBBC.
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Affiliation(s)
- Hanfang Jiang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Ruyan Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Xiaoran Liu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Ran Ran
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Jiayang Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Yaxin Liu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Xinyu Gui
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Yifei Chen
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Kun Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Bin Shao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Ying Yan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Xu Liang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Guohong Song
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Lijun Di
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Huiping Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
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AbdelHamid SG, Zekri ARN, AbdelAziz HM, El-Mesallamy HO. BRCA1 and BRCA2 truncating mutations and variants of unknown significance in Egyptian female breast cancer patients. Clin Chim Acta 2020; 512:66-73. [PMID: 33278427 DOI: 10.1016/j.cca.2020.11.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 11/24/2020] [Accepted: 11/26/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Breast cancer is the most common malignancy among women worldwide and the leading cause of cancer death in economically developing countries. We sought to study the contribution of BRCA1/2 mutations to the burden of breast cancer in Egypt. PATIENTS AND METHODS 103 Egyptian female breast cancer patients, unselected for age of onset or family history, were included in the study. Mutational screening of some exons of BRCA1/2 genes was performed using High Resolution Melting analysis followed by direct sequencing of detected variants. RESULTS Twenty sequence variants were identified. According to the American College of Medical Genetics and Genomics and the Association for Molecular Pathology (ACMG/AMP) guidelines, 8 variants were classified as pathogenic (Class 5), 1 as likely pathogenic and 11 as variants of unknown significance (Class 3). The pathogenic variants comprised 5 novel frameshift mutations; BRCA1 c.5205delA and BRCA2 (c.3641delT, c.3291dupT, c.3292delA, and c.787dupA) mutations; 1 novel nonsense mutation (BRCA2 c.3280A>T) and 2 previously described missense mutations (BRCA1 c.117T>G, c.110C>A). CONCLUSION This study provides the results of our attempt to delineate the genetic aspect of breast cancer among the Egyptian population and emphasizes the necessity of implementing screening strategies for early diagnosis and counseling for breast cancer in Egypt.
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Affiliation(s)
- Sherihan G AbdelHamid
- Department of Biochemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt.
| | - Abdel-Rahman N Zekri
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Giza, Egypt
| | - Hany M AbdelAziz
- Department of Clinical Oncology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Hala O El-Mesallamy
- Department of Biochemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt; Dean of Faculty of Pharmacy, Sinai University, Egypt
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Johnatty SE, Stewart CJR, Smith D, Buchanan D, Leung Y, Oehler MK, Brand A, Webb PM, Spurdle AB. Risk and prognostic factors for endometrial carcinoma after diagnosis of breast or Lynch-associated cancers-A population-based analysis. Cancer Med 2018; 7:6411-6422. [PMID: 30485707 PMCID: PMC6308118 DOI: 10.1002/cam4.1890] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/18/2018] [Accepted: 11/01/2018] [Indexed: 01/10/2023] Open
Abstract
We hypothesized that endometrial carcinoma (EC) patients with a prior cancer diagnosis, after accounting for EC arising after tamoxifen-treated prior breast carcinoma, are more likely to have an underlying genetic basis. We used information from a population-based study to compare measured risk factors, tumor characteristics, survival, and known mismatch repair (MMR) pathogenic variant status for EC subgroups according to prior diagnosis of cancer (none, breast cancer tamoxifen-treated or not, Lynch Syndrome (LS)-associated cancer). Family history of any cancer was increased for EC cases with prior breast cancer, both tamoxifen treated (P = 0.005) and untreated (P = 0.01). EC cases with prior LS-associated cancer more often reported family history of LS-associated cancer (P = 0.04) and breast cancer (P = 0.05). EC patients with a germline pathogenic MMR gene variant were more likely to report a prior cancer than cases with a MMR proficient tumor (P = 0.0001), but more than half (54.5%) of MMR carriers reported no prior cancer. Women developing EC after tamoxifen treatment for breast cancer were significantly more likely to develop EC of malignant mixed mullerian tumor subtype (13.2% vs 2.6%, P = 1.3 × 10-6 ), present with stage IV disease (8.8% vs 1.2%, P = 1.6 × 10-6 ), and have poorer survival (HRadj 1.96; P = 0.001). While report of prior cancer is an indicator of MMR pathogenic variant status, molecular analysis of all ECs at diagnosis is warranted to detect all patients with LS. Results also indicate the importance of longer-term monitoring of women treated with tamoxifen for symptoms of EC, and the need for studies assessing the biological mechanism underlying the poorer prognosis of this subset of EC patients.
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Affiliation(s)
- Sharon E. Johnatty
- Department of Genetics and Computational BiologyQIMR Berghofer Medical Research InstituteBrisbaneQueenslandAustralia
| | - Colin J. R. Stewart
- Department of HistopathologyKing Edward Memorial HospitalPerthWestern AustraliaAustralia
- School of Woman's and Infants' HealthUniversity of Western AustraliaPerthWestern AustraliaAustralia
| | - Deborah Smith
- Department of PathologyThe Mater HospitalBrisbaneQueenslandAustralia
| | - Daniel Buchanan
- Colorectal Oncogenomics Group, Genetic Epidemiology Laboratory, Department of PathologyThe University of MelbourneParkvilleVictoriaAustralia
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global HealthThe University of MelbourneMelbourneVictoriaAustralia
- Genetic Medicine and Family Cancer ClinicRoyal Melbourne HospitalParkvilleVictoriaAustralia
| | - Yee Leung
- School of Woman's and Infants' HealthUniversity of Western AustraliaPerthWestern AustraliaAustralia
- Department of Gynaecological OncologyKing Edward Memorial HospitalPerthWestern AustraliaAustralia
| | - Martin K. Oehler
- Department of Gynaecological OncologyRoyal Adelaide HospitalAdelaideSouth AustraliaAustralia
| | - Alison Brand
- Department of Gynaecological OncologyWestmead Hospital, University of SydneyWestmeadNew South WalesAustralia
| | - Penelope M. Webb
- Department of Population HealthQIMR Berghofer Medical Research InstituteBrisbaneQueenslandAustralia
| | - Amanda B. Spurdle
- Department of Genetics and Computational BiologyQIMR Berghofer Medical Research InstituteBrisbaneQueenslandAustralia
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10
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Sim Y, Tan VKM, Sidek NAB, Chia DKA, Tan BKT, Madhukumar P, Yong WS, Wong CY, Ong KW. Bilateral breast cancers in an Asian population, and a comparison between synchronous and metachronous tumours. ANZ J Surg 2018; 88:982-987. [PMID: 30141242 DOI: 10.1111/ans.14773] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 06/17/2018] [Indexed: 11/29/2022]
Abstract
BACKGROUND Women with unilateral breast cancer have an increased risk of developing bilateral breast cancer (BBC). Patients with metachronous BBC (mBBC) usually have an earlier age of onset, and their prognoses have been shown to be either similar or poorer than those with synchronous BBC (sBBC). Given the differing presentation and characteristics of breast cancers in the Asian population and the West, this study aims to characterize Asian patients with BBC. METHODS All patients who had oncological breast surgery between 2001 and 2010 at the Singapore General Hospital and National Cancer Centre Singapore were reviewed. Patients with BBC were identified and studied. RESULTS A total of 5520 Singaporean women had oncological breast surgery, 155 women (2.8%) had BBC. Of those with BBC, 47.1% (n = 73) were synchronous and 52.9% (n = 82) metachronous (mean interval of 39.4 months), and there was no difference in median age in both groups (54 years of age). Patients with sBBC were more likely to have a positive family history and had asymptomatic contralateral tumours. Although patients with sBBCs were more likely to have ER/PR positive and Her2 negative tumours, they had a lower 5-year overall survival than those with mBBC (P = 0.022). CONCLUSION Our study shows that Asian women with BBC have different characteristics to their Western counterparts. In particular, women with sBBC tended to have a lower 5-year overall survival compared to those with mBBC, despite having seemingly biologically favourable tumours, which suggest that there may be more underlying their tumour biology and genetics.
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Affiliation(s)
- Yirong Sim
- Department of Surgical Oncology, National Cancer Centre Singapore, Singapore.,Singhealth Duke-NUS Breast Centre, Singapore General Hospital, Singapore
| | - Veronique K M Tan
- Department of Surgical Oncology, National Cancer Centre Singapore, Singapore.,Singhealth Duke-NUS Breast Centre, Singapore General Hospital, Singapore
| | - Nur A B Sidek
- Singhealth Duke-NUS Breast Centre, Singapore General Hospital, Singapore
| | - Daryl K A Chia
- Singhealth Duke-NUS Breast Centre, Singapore General Hospital, Singapore
| | - Benita K T Tan
- Singhealth Duke-NUS Breast Centre, Singapore General Hospital, Singapore
| | - Preetha Madhukumar
- Department of Surgical Oncology, National Cancer Centre Singapore, Singapore.,Singhealth Duke-NUS Breast Centre, Singapore General Hospital, Singapore
| | - Wei Sean Yong
- Department of Surgical Oncology, National Cancer Centre Singapore, Singapore.,Singhealth Duke-NUS Breast Centre, Singapore General Hospital, Singapore
| | - Chow Yin Wong
- Singhealth Duke-NUS Breast Centre, Singapore General Hospital, Singapore
| | - Kong Wee Ong
- Department of Surgical Oncology, National Cancer Centre Singapore, Singapore.,Singhealth Duke-NUS Breast Centre, Singapore General Hospital, Singapore
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11
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Wadasadawala T, Lewis S, Parmar V, Budrukkar A, Gupta S, Nair N, Shet T, Badwe R, Sarin R. Bilateral Breast Cancer After Multimodality Treatment: A Report of Clinical Outcomes in an Asian Population. Clin Breast Cancer 2018; 18:e727-e737. [DOI: 10.1016/j.clbc.2017.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 10/03/2017] [Accepted: 11/02/2017] [Indexed: 10/18/2022]
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12
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Parvizpour S, Razmara J, Omidi Y. Breast cancer vaccination comes to age: impacts of bioinformatics. ACTA ACUST UNITED AC 2018; 8:223-235. [PMID: 30211082 PMCID: PMC6128970 DOI: 10.15171/bi.2018.25] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 04/02/2018] [Accepted: 04/03/2018] [Indexed: 01/01/2023]
Abstract
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Introduction: Breast cancer, as one of the major causes of cancer death among women, is the central focus of this study. The recent advances in the development and application of computational tools and bioinformatics in the field of immunotherapy of malignancies such as breast cancer have emerged the new dominion of immunoinformatics, and therefore, next generation of immunomedicines .
Methods: Having reviewed the most recent works on the applications of computational tools, we provide comprehensive insights into the breast cancer incidence and its leading causes as well as immunotherapy approaches and the future trends. Furthermore, we discuss the impacts of bioinformatics on different stages of vaccine design for the breast cancer, which can be used to produce much more efficient vaccines through a rationalized time- and cost-effective in silico approaches prior to conducting costly experiments.
Results: The tools can be significantly used for designing the immune system-modulating drugs and vaccines based on in silico approaches prior to in vitro and in vivo experimental evaluations. Application of immunoinformatics in the cancer immunotherapy has shown its success in the pre-clinical models. This success returns back to the impacts of several powerful computational approaches developed during the last decade.
Conclusion: Despite the invention of a number of vaccines for the cancer immunotherapy, more computational and clinical trials are required to design much more efficient vaccines against various malignancies, including breast cancer.
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Affiliation(s)
- Sepideh Parvizpour
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jafar Razmara
- Department of Computer Science, Faculty of mathematical Sciences, University of Tabriz, Tabriz, Iran
| | - Yadollah Omidi
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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13
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Motuzyuk I, Sydorchuk O, Kovtun N, Palian Z, Kostiuchenko Y. Analysis of Trends and Factors in Breast Multiple Primary Malignant Neoplasms. BREAST CANCER-BASIC AND CLINICAL RESEARCH 2018. [PMID: 29531473 PMCID: PMC5843092 DOI: 10.1177/1178223418759959] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Background The study aims to evaluate the current state and tendencies in multiple primary breast cancer incidence, behavior, and treatment in Ukraine. Methods A total of 2032 patients who received special treatment at the Department of Breast Tumors and Reconstructive Surgery of the National Cancer Institute from 2008 to 2015 were included in the study. Among them, there were 195 patients with multiple primary malignant neoplasms: 54.9% patients with synchronous cancer and 45.1% patients with metachronous cancer. The average age of patients was 46.6 years, and the percentage of postmenopausal women was 63.1%. Among patients with synchronous cancer, there were 56.1% patients with only breast localizations and 43.9% with combination of breast and other localizations, and among patients with metachronous cancer, there were 46.6% patients with only breast localizations and 53.4% with combination of breast and other localizations. All the patients were evaluated in terms of aggressiveness of the disease, survival rates, as well as risk factors and treatment options. Results A more aggressive course of breast cancer is observed in patients exposed to radiation from the Chernobyl accident under the age of 30 years (P < .01). The clinical course of disease in patients with synchronous cancer is worse and prognostically unfavorable compared with metachronous cancer (P < .01). The course of the disease in patients who underwent mastectomy is worse compared with patients who underwent breast-conserving surgery (P < .01). Plastic and reconstructive surgery in patients with synchronous cancer was proven to be reasonable in terms of increase in survival (P < .01). Conclusions The patients with multiple primary breast cancer should have attentive management and treatment. Multidisciplinary team should concern all the risk factors and provide the most sufficient option of management. This is crucial to continue research in this oncological area.
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Affiliation(s)
- Igor Motuzyuk
- Department of Oncology, Bogomolets National Medical University, Kyiv, Ukraine
| | - Oleg Sydorchuk
- Department of Oncology, Bogomolets National Medical University, Kyiv, Ukraine
| | - Natalia Kovtun
- Chiltern Clinical Research Ukraine LLC, Kyiv, Ukraine.,Department of Statistics and Demography, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Zinaida Palian
- Department of Statistics and Demography, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
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14
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Molecular characterization and clinical interpretation of BRCA1/BRCA2 variants in families from Murcia (south-eastern Spain) with hereditary breast and ovarian cancer: clinical–pathological features in BRCA carriers and non-carriers. Fam Cancer 2017; 16:477-489. [DOI: 10.1007/s10689-017-9985-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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15
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Multi-gene panel testing for hereditary cancer predisposition in unsolved high-risk breast and ovarian cancer patients. Breast Cancer Res Treat 2017; 163:383-390. [PMID: 28281021 PMCID: PMC5410210 DOI: 10.1007/s10549-017-4181-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Accepted: 02/27/2017] [Indexed: 12/30/2022]
Abstract
Purpose Many women with an elevated risk of hereditary breast and ovarian cancer have previously tested negative for pathogenic mutations in BRCA1 and BRCA2. Among them, a subset has hereditary susceptibility to cancer and requires further testing. We sought to identify specific groups who remain at high risk and evaluate whether they should be offered multi-gene panel testing. Methods We tested 300 women on a multi-gene panel who were previously enrolled in a long-term study at UCSF. As part of their long-term care, all previously tested negative for mutations in BRCA1 and BRCA2 either by limited or comprehensive sequencing. Additionally, they met one of the following criteria: (i) personal history of bilateral breast cancer, (ii) personal history of breast cancer and a first or second degree relative with ovarian cancer, and (iii) personal history of ovarian, fallopian tube, or peritoneal carcinoma. Results Across the three groups, 26 women (9%) had a total of 28 pathogenic mutations associated with hereditary cancer susceptibility, and 23 women (8%) had mutations in genes other than BRCA1 and BRCA2. Ashkenazi Jewish and Hispanic women had elevated pathogenic mutation rates. In addition, two women harbored pathogenic mutations in more than one hereditary predisposition gene. Conclusions Among women at high risk of breast and ovarian cancer who have previously tested negative for pathogenic BRCA1 and BRCA2 mutations, we identified three groups of women who should be considered for subsequent multi-gene panel testing. The identification of women with multiple pathogenic mutations has important implications for family testing. Electronic supplementary material The online version of this article (doi:10.1007/s10549-017-4181-0) contains supplementary material, which is available to authorized users.
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16
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Motuzyuk I, Sydorchuk O, Kovtun N, Kostiuchenko Y. Synchronous and metachronous breast cancer in Ukraine. Breast Dis 2017; 37:83-93. [PMID: 29504518 DOI: 10.3233/bd-170285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AIM This study aims to describe the current state of multiple primary malignant neoplasms (MPMNs) breast cancer patients management, evaluate the predictive impact of different factors, optimise approaches to diagnosis and treatment of these patients and improve their life quality. METHODS The study included 2,032 patients who received special treatment at the Department of Breast Tumours and it Reconstructive Surgery of the National Cancer Institute from 2008 to 2015 within an open randomized controlled trial. The sample included 195 patients with synchronous cancer or metachronous breast cancer. RESULTS A more aggressive course of breast cancer is observed in patients exposed to radiation from the Chornobyl accident. The clinical course of disease in patients with synchronous breast cancer is worse and prognostically unfavourable comparing to metachronous one. The influence on clinical course of disease of primary localization, type of settlement, blood group and Rh factor, type of special treatment, and age in patients with synchronous and metachronous cancer was not statistically proven. The impact of operative intervention scope in patients with synchronous and metachronous breast cancer was statistically proven, i.e. the course of the underlying disease in patients who underwent mastectomy is worse comparing to patients who underwent conservative surgery. Plastic and reconstructive surgery in patients with synchronous cancer was statistically proven in this study as reasonable. The influence of local recurrence rates on overall survival in patients with synchronous cancer was proven. However, the influence of local recurrence rates in patients with metachronous cancer was not statistically proven. CONCLUSIONS There should be paid a great attention to synchronous and metachronous breast cancer patients in order to find and provide the best options of their management. This is crucial to continue researches in this field of oncology.
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Affiliation(s)
- Igor Motuzyuk
- Oncology Department, Bogomolets National Medical University, 03022, Kyiv, Ukraine
| | - Oleg Sydorchuk
- Oncology Department, Bogomolets National Medical University, 03022, Kyiv, Ukraine
| | - Natalia Kovtun
- Chiltern Clinical Research Ukraine LLC, Department of Statistics and Demography, Taras Schevchenko National University of Kyiv, Kyiv, Ukraine
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17
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Breast magnetic resonance imaging incidental findings. Top Magn Reson Imaging 2014; 23:361-71. [PMID: 25463407 DOI: 10.1097/rmr.0000000000000036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Senkus E, Szade J, Pieczyńska B, Zaczek A, Świerblewski M, Biernat W, Jassem J. Are bilateral breast cancers and breast cancers coexisting with ovarian cancer different from solitary tumors? A pair-matched immunohistochemical analysis aimed at intrinsic tumor phenotype. Pathol Int 2014; 64:508-17. [PMID: 25296577 DOI: 10.1111/pin.12202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Accepted: 08/08/2014] [Indexed: 11/30/2022]
Abstract
Patients with bilateral breast cancer (BBC) and breast-ovarian cancer syndrome (BOCS) constitute populations potentially enriched for molecular defects involved in the pathomechanisms of these malignancies. The aim of our study was to compare tumor morphology and expression of estrogen and progesterone receptor, HER2, Ki67, cytokeratin 5/6, E-cadherin, vimentin and epidermal growth factor receptor in tissue microarrays from 199 tumors from BBC or BOCS patients and 199 age-matched solitary tumors. Compared to controls, BBC and BOCS considered jointly had lower incidence of DCIS, lower expression of PgR and HER2, and higher expression of Ki67 and vimentin. BOCS tumors were of higher grade, had lower expression of ER and PgR and higher expression of Ki67, CK5/6, vimentin and EGFR. BBC had less DCIS component, lower HER2 expression and higher Ki67 expression. Metachronous BBC (mBBC) had lower expression of ER, PgR and HER2, and higher expression of Ki67 and vimentin. Synchronous BBC (sBBC) had less DCIS component, higher expression of ER, and lower expression of CK5/6, EGFR and E-cadherin. BBC and breast cancers in BOCS differ in many aspects from solitary tumors. BBC are a heterogeneous group of tumors, differing between sBBC and mBBC. mBBC phenotype shares many features with BOCS tumors.
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Affiliation(s)
- Elżbieta Senkus
- Department of Oncology and Radiotherapy, Medical University of Gdańsk, Gdańsk, Poland
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19
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Senkus E, Szade J, Pieczyńska B, Żaczek A, Brożek I, Radecka B, Kowalczyk A, Wełnicka-Jaśkiewicz M, Jassem J. Are bilateral breast cancers different from breast cancers coexisting with ovarian cancer? An immunohistochemical analysis aimed at intrinsic tumor phenotype. Breast 2013; 22:425-30. [PMID: 23642527 DOI: 10.1016/j.breast.2013.04.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Revised: 03/19/2013] [Accepted: 04/03/2013] [Indexed: 11/24/2022] Open
Abstract
RATIONALE Bilateral breast cancers (BBC) and breast cancers coexisting with ovarian cancer (BOCS) are associated with genetic predisposition more frequently than sporadic cases. We compared the phenotypes of these tumors to better understand their pathomechanisms and aid the guiding of their clinical management. MATERIALS AND METHODS Tumor morphology and expression of ER, PgR, HER2, Ki67, CK5/6, E-cadherin, vimentin and EGFR were assessed in a tissue microarray containing cores from 174 BBC, 23 BOCS and 2 BBC + BOCS. RESULTS BOCS tumors were characterized by higher incidence of EGFR expression, HER2 negativity and lower incidence of intraductal component. HER2-positive phenotypes were marginally more frequent in the BBC group and triple negative tumors - in BOCS. CONCLUSION Breast cancers from BOCS patients are characterized by more aggressive phenotype, most probably related to their more frequent association with BRCA1 mutation.
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Affiliation(s)
- Elżbieta Senkus
- Department of Oncology & Radiotherapy, Medical University of Gdańsk, Dębinki 7, 80-211 Gdańsk, Poland.
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20
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Comparison of the screening practices of unaffected noncarriers under 40 and between 40 and 49 in BRCA1/2 families. J Genet Couns 2013; 22:469-81. [PMID: 23345056 DOI: 10.1007/s10897-012-9569-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Accepted: 12/27/2012] [Indexed: 10/27/2022]
Abstract
This study aimed to 1) compare the cancer screening practices of unaffected noncarrier women under 40 and those aged 40 to 49, following the age-based medical screening guidelines, and 2) consider the way the patients justified their practices of screening or over-screening. For this study, 131 unaffected noncarriers-77 women under age 40 and 54 between 40 and 49, all belonging to a BRCA1/2 family-responded to a questionnaire on breast or ovarian cancer screenings they had undergone since receiving their negative genetic test results, their motives for seeking these screenings, and their intentions to pursue these screenings in the future. Unaffected noncarriers under age 40 admitted practices that could be qualified as over-screening. Apart from mammogram and breast ultrasounds, which the women under 40 reported seeking less often, these women's screening practices were comparable to those of women between 40 and 49. Cancer prevention and a family history of cancer were the two most frequently cited justifications for pursuing these screenings. We suggest that health care professionals discuss with women under 50 the ineffectiveness of breast and ovarian cancer screenings so that they will adapt their practices to conform to medical guidelines and limit their exposure to the potentially negative impacts of early cancer screening.
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Son BH, Ahn SH, Kim SW, Kang E, Park SK, Lee MH, Noh WC, Kim LS, Jung Y, Kim KS, Noh DY, Moon BI, Suh YJ, Lee JE, Choi DH, Kim SY, Jung SH, Yom CK, Lee H, Yang JH. Prevalence of BRCA1 and BRCA2 mutations in non-familial breast cancer patients with high risks in Korea: the Korean Hereditary Breast Cancer (KOHBRA) Study. Breast Cancer Res Treat 2012; 133:1143-52. [PMID: 22382806 PMCID: PMC3387491 DOI: 10.1007/s10549-012-2001-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Accepted: 02/15/2012] [Indexed: 12/19/2022]
Abstract
Prevalence and phenotype of BRCA mutation can vary by race. The purpose of this study is to evaluate the prevalence of BRCA1/2 mutations in non-familial breast cancer patients with high risks in Korea. A subset of 758 patients was selected for this study from the KOHBRA nationwide multicenter prospective cohort study. Mutations in BRCA1/2 genes were tested using fluorescent-conformation sensitive gel electrophoresis, denaturing high performance liquid chromatography or direct sequencing. Mutation of BRCA1/2 genes were identified in 65 (8.6%) patients among total 758 patients [BRCA1 mutation: 25 (3.3%), BRCA2 mutation: 40 (5.3%)]. According to risk groups, mutation of BRCA1/2 genes were identified in 53 (8.5%) of 625 early onset patients (age ≤ 40), in 22 (17.7%) of 124 bilateral breast cancer patients, in 3 (50.0%) of 6 breast and ovarian cancer patients, in one (5.9%) of 17 male breast cancer patients, in 5 cases (7.6%) of 66 multiple organ cancer patients. The most common mutation was 509C>A for BRCA1 and 7708C>T for BRCA2. The prevalence of BRCA1/2 mutations by age in early onset patients was significantly different (age <35 vs age ≥35; 10.0 vs 2.9%, p = 0.0007). BRCA1/2 mutations for non-familial Korean breast cancer patients were detected at a high rate, particularly, in patients with early onset of less than 35 years of age, bilateral breast cancer, and breast and ovarian cancer. Individualized genetic counseling should be offered for non-familial breast cancer patients with these risk factors.
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Affiliation(s)
- Byung Ho Son
- Department of Surgery, College of Medicine, University of Ulsan and Asan Medical Center, Seoul, Korea
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22
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McQuirter M, Castiglia LL, Loiselle CG, Wong N. Decision-Making Process of Women Carrying a BRCA1 or BRCA2 Mutation Who Have Chosen Prophylactic Mastectomy. Oncol Nurs Forum 2010; 37:313-20. [DOI: 10.1188/10.onf.313-320] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Bernstein JL, Haile RW, Stovall M, Boice JD, Shore RE, Langholz B, Thomas DC, Bernstein L, Lynch CF, Olsen JH, Malone KE, Mellemkjaer L, Borresen-Dale AL, Rosenstein BS, Teraoka SN, Diep AT, Smith SA, Capanu M, Reiner AS, Liang X, Gatti RA, Concannon P. Radiation exposure, the ATM Gene, and contralateral breast cancer in the women's environmental cancer and radiation epidemiology study. J Natl Cancer Inst 2010; 102:475-83. [PMID: 20305132 DOI: 10.1093/jnci/djq055] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Ionizing radiation is a known mutagen and an established breast carcinogen. The ATM gene is a key regulator of cellular responses to the DNA damage induced by ionizing radiation. We investigated whether genetic variants in ATM play a clinically significant role in radiation-induced contralateral breast cancer in women. METHODS The Women's Environmental, Cancer, and Radiation Epidemiology Study is an international population-based case-control study nested within a cohort of 52,536 survivors of unilateral breast cancer diagnosed between 1985 and 2000. The 708 case subjects were women with contralateral breast cancer, and the 1397 control subjects were women with unilateral breast cancer matched to the case subjects on age, follow-up time, registry reporting region, and race and/or ethnicity. All women were interviewed and underwent full mutation screening of the entire ATM gene. Complete medical treatment history information was collected, and for all women who received radiotherapy, the radiation dose to the contralateral breast was reconstructed using radiotherapy records and radiation measurements. Rate ratios (RRs) and corresponding 95% confidence intervals (CIs) were estimated by using multivariable conditional logistic regression. All P values are two-sided. RESULTS Among women who carried a rare ATM missense variant (ie, one carried by <1% of the study participants) that was predicted to be deleterious, those who were exposed to radiation (mean radiation exposure = 1.2 Gy, SD = 0.7) had a statistically significantly higher risk of contralateral breast cancer compared with unexposed women who carried the wild-type genotype (0.01-0.99 Gy: RR = 2.8, 95% CI = 1.2 to 6.5; > or =1.0 Gy: RR = 3.3, 95% CI = 1.4 to 8.0) or compared with unexposed women who carried the same predicted deleterious missense variant (0.01-0.99 Gy: RR = 5.3, 95% CI = 1.6 to 17.3; > or =1.0 Gy: RR = 5.8, 95% CI = 1.8 to 19.0; P(trend) = .044). CONCLUSIONS Women who carry rare deleterious ATM missense variants and who are treated with radiation may have an elevated risk of developing contralateral breast cancer. However, the rarity of these deleterious missense variants in human populations implies that ATM mutations could account for only a small portion of second primary breast cancers.
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Affiliation(s)
- Jonine L Bernstein
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, 307 E 63rd St Fl 3, New York, NY 10065, USA
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24
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Abstract
AbstractBreast cancer is one of the most frequently diagnosed cancers among women in the western world. Due to the aggressive behaviour of some specific types and the possibility of an early diagnosis, breast cancer has been constantly studied. Tumour size, histological type, cellular and nuclear characteristics, mitotic index, vascular invasion, hormonal receptors and axillary lymph node status are biomarkers routinely used. However, these parameters are not enough to predict the course of this disease. Molecular biology advances have made it possible to find new markers, which have already been incorporated to the clinical practice. Their ultimate goal is to reduce mortality by identifying women at risk for the development of this disease, help diagnosis, determine prognosis, detect recurrences, monitor and guide treatment, and in particular cancers they are suited for general screening. Tumour markers in breast cancer were ranked in categories reflecting their clinical utility, according to the American College of Pathologists.This article focuses on traditional and new molecular markers stratifying them into categories and emphasizing their relevance in the routine evaluation of patients with breast cancer.
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Ray JA, Loescher LJ, Brewer M. Risk-Reduction Surgery Decisions in High-Risk Women Seen for Genetic Counseling. J Genet Couns 2005; 14:473-84. [PMID: 16388328 DOI: 10.1007/s10897-005-5833-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Women at greatest risk for hereditary breast and ovarian cancer may consider prophylactic removal of breasts or ovaries as a risk-reduction measure. This report describes uptake of risk-reduction mastectomy (RRM), risk-reduction oophorectomy (RRO), and related factors in 62 high-risk women who received genetic counseling. Seven (11%) participants underwent RRM and 13 (21%) underwent RRO. Of these women, 37% did not have BRCA testing, suggesting other factors influence decisions to undergo surgery. Women who had indicated (pre-genetic counseling) their intent not to have surgery chose not to have surgery. Information received during genetic counseling that women perceived as being most important for influencing risk-reduction surgery decisions was BRCA test result (positive or negative), followed by discussion of family cancer history. Reasons for indecision about risk-reduction surgery included genetic testing results, concerns about surgery, timing in life, and early menopause. The findings enhance our understanding of information that is helpful to women considering this surgery.
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Affiliation(s)
- Jessica A Ray
- Arizona Cancer Center, University of Arizona, Tucson, 85724, USA
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26
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Maruvada P, Wang W, Wagner PD, Srivastava S. Biomarkers in molecular medicine: cancer detection and diagnosis. Biotechniques 2005; Suppl:9-15. [PMID: 16528918 DOI: 10.2144/05384su04] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
In spite of advances in diagnostics and therapeutics, cancer remains the second leading cause of death in the U.S. Successful cancer treatment depends not only on better therapies but also on improved methods to assess an individual's risk of developing cancer and to detect cancers at early stages when they can be more effectively treated. Current cancer diagnostic imaging methods are labor-intensive and expensive, especially for screening large asymptomatic populations. Effective screening strategies depend on methods that are noninvasive and detect cancers in their early stages of development. There is increasing interest and enthusiasm in molecular markers as tools for cancer detection and prognosis. It is hoped that newly discovered cancer biomarkers and advances in high-throughput technologies would revolutionize cancer therapies by improving cancer risk assessment, early detection, diagnosis, prognosis, and monitoring therapeutic response. These biomarkers will be used either as stand-alone tests or to complement existing imaging methods.
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Affiliation(s)
- Padma Maruvada
- Division of Cancer Prevention, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892-7346, USA
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