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Al-Kafaji G, Jassim G, AlHajeri A, Alawadhi AMT, Fida M, Sahin I, Alali F, Fadel E. Investigation of germline variants in Bahraini women with breast cancer using next-generation sequencing based-multigene panel. PLoS One 2023; 18:e0291015. [PMID: 37656691 PMCID: PMC10473515 DOI: 10.1371/journal.pone.0291015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 08/20/2023] [Indexed: 09/03/2023] Open
Abstract
Germline variants in BRCA1 and BRCA2 (BRCA1/2) genes are the most common cause of hereditary breast cancer. However, a significant number of cases are not linked to these two genes and additional high-, moderate- and low-penetrance genes have been identified in breast cancer. The advent of next-generation sequencing (NGS) allowed simultaneous sequencing of multiple cancer-susceptibility genes and prompted research in this field. So far, cancer-predisposition genes other than BRCA1/2 have not been studied in the population of Bahrain. We performed a targeted NGS using a multi-panel covering 180 genes associated with cancer predisposition to investigate the spectrum and frequency of germline variants in 54 women with a positive personal and/or family history of breast cancer. Sequencing analysis revealed germline variants in 29 (53.7%) patients. Five pathogenic/likely pathogenic variants in four DNA repair pathway-related genes were identified in five unrelated patients (9.3%). Two BRCA1 variants, namely the missense variant c.287A>G (p.Asp96Gly) and the truncating variant c.1066C>T (p.Gln356Ter), were detected in two patients (3.7%). Three variants in non-BRCA1/2 genes were detected in three patients (1.85% each) with a strong family history of breast cancer. These included a monoallelic missense variant c.1187G>A (p.Gly396Asp) in MUTYH gene, and two truncating variants namely c.3343C>T (p.Arg1115Ter) in MLH3 gene and c.1826G>A (p.Trp609Ter) in PMS1 gene. Other variants of uncertain significance (VUS) were also detected, and some of them were found together with the deleterious variants. In this first application of NGS-based multigene testing in Bahraini women with breast cancer, we show that multigene testing can yield additional genomic information on low-penetrance genes, although the clinical significance of these genes has not been fully appreciated yet. Our findings also provide valuable epidemiological information for future studies and highlight the importance of genetic testing, and an NGS-based multigene analysis may be applied supplementary to traditional genetic counseling.
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Affiliation(s)
- Ghada Al-Kafaji
- Department of Molecular Medicine and Al-Jawhara Centre for Molecular Medicine, Genetics, and Inherited Disorders, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
| | - Ghufran Jassim
- Department of Family Medicine, Royal College of Surgeons in Ireland-Bahrain, Manama, Kingdom of Bahrain
| | - Amani AlHajeri
- Department of Genetics, Salmaniya Medical Complex, Manama, Kingdom of Bahrain
| | | | - Mariam Fida
- Bahrain Oncology Center, King Hamad University Hospital, Manama, Kingdom of Bahrain
| | - Ibrahim Sahin
- Department of Molecular Medicine and Al-Jawhara Centre for Molecular Medicine, Genetics, and Inherited Disorders, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
| | - Faisal Alali
- North western Hospital, Chicago Medical School, North Chicago, Illinois, United States of America
| | - Elias Fadel
- Bahrain Oncology Center, King Hamad University Hospital, Manama, Kingdom of Bahrain
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2
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Chen B, Huang Y, He S, Yu P, Wu L, Peng H. N 6-methyladenosine modification in 18S rRNA promotes tumorigenesis and chemoresistance via HSF4b/HSP90B1/mutant p53 axis. Cell Chem Biol 2023; 30:144-158.e10. [PMID: 36800991 DOI: 10.1016/j.chembiol.2023.01.006] [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] [Received: 08/28/2022] [Revised: 12/14/2022] [Accepted: 01/19/2023] [Indexed: 02/18/2023]
Abstract
Aberrant N6-methyladenosine (m6A) modification on mRNA is correlated with cancer progression. However, the role of m6A on ribosomal RNA (rRNA) in cancer remains poorly understood. Our current study reveals that METTL5/TRMT112 and their mediated m6A modification at the 18S rRNA 1832 site (m6A1832) are elevated in nasopharyngeal carcinoma (NPC) and promote oncogenic transformation in vitro and in vivo. Moreover, loss of catalytic activity of METTL5 abolishes its oncogenic functions. Mechanistically, m6A1832 18S rRNA modification facilitates the assembly of 80S ribosome via bridging the RPL24-18S rRNA interaction, therefore promoting the translation of mRNAs with 5' terminal oligopyrimidine (5' TOP) motifs. Further mechanistic analysis reveals that METTL5 enhances HSF4b translation to activate the transcription of HSP90B1, which binds with oncogenic mutant p53 (mutp53) protein and prevents it from undergoing ubiquitination-dependent degradation, therefore facilitating NPC tumorigenesis and chemoresistance. Overall, our findings uncover an innovative mechanism underlying rRNA epigenetic modification in regulating mRNA translation and the mutp53 pathway in cancer.
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Affiliation(s)
- Binbin Chen
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, 106 Zhongshan Er Road, Yuexiu District, Guangzhou 510080, P.R. China; State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China; Department of Clinical Nutrition, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Ying Huang
- State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China; Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Shuiqing He
- State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China; Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Peng Yu
- Department of Radiation Oncology, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Disease, Guangzhou 510095, P.R. China
| | - Lirong Wu
- Department of Radiation Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing 210009, P.R. China.
| | - Hao Peng
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, 106 Zhongshan Er Road, Yuexiu District, Guangzhou 510080, P.R. China.
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Rao ND, Shirts BH. Using species richness calculations to model the global profile of unsampled pathogenic variants: Examples from BRCA1 and BRCA2. PLoS One 2023; 18:e0278010. [PMID: 36753473 PMCID: PMC9907816 DOI: 10.1371/journal.pone.0278010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/26/2023] [Indexed: 02/09/2023] Open
Abstract
There have been many surveys of genetic variation in BRCA1 and BRCA2 to identify variant prevalence and catalogue population specific variants, yet none have evaluated the magnitude of unobserved variation. We applied species richness estimation methods from ecology to estimate "variant richness" and determine how many germline pathogenic BRCA1/2 variants have yet to be identified and the frequency of these missing variants in different populations. We also estimated the prevalence of germline pathogenic BRCA1/2 variants and identified those expected to be most common. Data was obtained from a literature search including studies conducted globally that tested the entirety of BRCA1/2 for pathogenic variation. Across countries, 45% to 88% of variants were estimated to be missing, i.e., present in the population but not observed in study data. Estimated variant frequencies in each country showed a higher proportion of rare variants compared to recurrent variants. The median prevalence estimate of BRCA1/2 pathogenic variant carriers was 0.64%. BRCA1 c.68_69del is likely the most recurrent BRCA1/2 variant globally due to its estimated prevalence in India. Modeling variant richness using ecology methods may assist in evaluating clinical targeted assays by providing a picture of what is observed with estimates of what is still unknown.
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Affiliation(s)
- Nandana D. Rao
- Institute for Public Health Genetics, University of Washington, Seattle, Washington, United States of America
| | - Brian H. Shirts
- Institute for Public Health Genetics, University of Washington, Seattle, Washington, United States of America
- Department of Laboratory Medicine, University of Washington, Seattle, Washington, United States of America
- Brotman Baty Institute for Precision Medicine, Seattle, Washington, United States of America
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4
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Mekonnen N, Yang H, Shin YK. Homologous Recombination Deficiency in Ovarian, Breast, Colorectal, Pancreatic, Non-Small Cell Lung and Prostate Cancers, and the Mechanisms of Resistance to PARP Inhibitors. Front Oncol 2022; 12:880643. [PMID: 35785170 PMCID: PMC9247200 DOI: 10.3389/fonc.2022.880643] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/18/2022] [Indexed: 11/30/2022] Open
Abstract
Homologous recombination (HR) is a highly conserved DNA repair mechanism that protects cells from exogenous and endogenous DNA damage. Breast cancer 1 (BRCA1) and breast cancer 2 (BRCA2) play an important role in the HR repair pathway by interacting with other DNA repair proteins such as Fanconi anemia (FA) proteins, ATM, RAD51, PALB2, MRE11A, RAD50, and NBN. These pathways are frequently aberrant in cancer, leading to the accumulation of DNA damage and genomic instability known as homologous recombination deficiency (HRD). HRD can be caused by chromosomal and subchromosomal aberrations, as well as by epigenetic inactivation of tumor suppressor gene promoters. Deficiency in one or more HR genes increases the risk of many malignancies. Another conserved mechanism involved in the repair of DNA single-strand breaks (SSBs) is base excision repair, in which poly (ADP-ribose) polymerase (PARP) enzymes play an important role. PARP inhibitors (PARPIs) convert SSBs to more cytotoxic double-strand breaks, which are repaired in HR-proficient cells, but remain unrepaired in HRD. The blockade of both HR and base excision repair pathways is the basis of PARPI therapy. The use of PARPIs can be expanded to sporadic cancers displaying the “BRCAness” phenotype. Although PARPIs are effective in many cancers, their efficacy is limited by the development of resistance. In this review, we summarize the prevalence of HRD due to mutation, loss of heterozygosity, and promoter hypermethylation of 35 DNA repair genes in ovarian, breast, colorectal, pancreatic, non-small cell lung cancer, and prostate cancer. The underlying mechanisms and strategies to overcome PARPI resistance are also discussed.
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Affiliation(s)
- Negesse Mekonnen
- Department of Pharmacy, Research Institute of Pharmaceutical Science, Seoul National University College of Pharmacy, Seoul, South Korea
- Department of Veterinary Science, School of Animal Science and Veterinary Medicine, Bahir Dar University, Bahir Dar, Ethiopia
| | - Hobin Yang
- Department of Pharmacy, Research Institute of Pharmaceutical Science, Seoul National University College of Pharmacy, Seoul, South Korea
| | - Young Kee Shin
- Department of Pharmacy, Research Institute of Pharmaceutical Science, Seoul National University College of Pharmacy, Seoul, South Korea
- Bio-MAX/N-Bio, Seoul National University, Seoul, South Korea
- Department of Molecular Medicine and Biopharmaceutical Sciences, Seoul National University Graduate School of Convergence Science and Technology, Seoul, South Korea
- LOGONE Bio Convergence Research Foundation, Center for Companion Diagnostics, Seoul, South Korea
- *Correspondence: Young Kee Shin,
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5
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Ding R, Xiao Y, Mo M, Zheng Y, Jiang YZ, Shao ZM. Breast cancer screening and early diagnosis in Chinese women. Cancer Biol Med 2022; 19:j.issn.2095-3941.2021.0676. [PMID: 35380032 PMCID: PMC9088185 DOI: 10.20892/j.issn.2095-3941.2021.0676] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/21/2022] [Indexed: 01/01/2023] Open
Abstract
Breast cancer is the most common malignant tumor in Chinese women, and its incidence is increasing. Regular screening is an effective method for early tumor detection and improving patient prognosis. In this review, we analyze the epidemiological changes and risk factors associated with breast cancer in China and describe the establishment of a screening strategy suitable for Chinese women. Chinese patients with breast cancer tend to be younger than Western patients and to have denser breasts. Therefore, the age of initial screening in Chinese women should be earlier, and the importance of screening with a combination of ultrasound and mammography is stressed. Moreover, Chinese patients with breast cancers have several ancestry-specific genetic features, and aiding in the determination of genetic screening strategies for identifying high-risk populations. On the basis of current studies, we summarize the development of risk-stratified breast cancer screening guidelines for Chinese women and describe the significant improvement in the prognosis of patients with breast cancer in China.
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Affiliation(s)
- Rui Ding
- Key Laboratory of Breast Cancer in Shanghai, Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yi Xiao
- Key Laboratory of Breast Cancer in Shanghai, Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Miao Mo
- Department of Cancer Prevention, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Ying Zheng
- Department of Cancer Prevention, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yi-Zhou Jiang
- Key Laboratory of Breast Cancer in Shanghai, Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Zhi-Ming Shao
- Key Laboratory of Breast Cancer in Shanghai, Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Precision Cancer Medicine Center, Fudan University Shanghai Cancer Center, Shanghai 200032, China
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6
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Fierheller CT, Guitton-Sert L, Alenezi WM, Revil T, Oros KK, Gao Y, Bedard K, Arcand SL, Serruya C, Behl S, Meunier L, Fleury H, Fewings E, Subramanian DN, Nadaf J, Bruce JP, Bell R, Provencher D, Foulkes WD, El Haffaf Z, Mes-Masson AM, Majewski J, Pugh TJ, Tischkowitz M, James PA, Campbell IG, Greenwood CMT, Ragoussis J, Masson JY, Tonin PN. A functionally impaired missense variant identified in French Canadian families implicates FANCI as a candidate ovarian cancer-predisposing gene. Genome Med 2021; 13:186. [PMID: 34861889 PMCID: PMC8642877 DOI: 10.1186/s13073-021-00998-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 10/27/2021] [Indexed: 12/14/2022] Open
Abstract
Background Familial ovarian cancer (OC) cases not harbouring pathogenic variants in either of the BRCA1 and BRCA2 OC-predisposing genes, which function in homologous recombination (HR) of DNA, could involve pathogenic variants in other DNA repair pathway genes. Methods Whole exome sequencing was used to identify rare variants in HR genes in a BRCA1 and BRCA2 pathogenic variant negative OC family of French Canadian (FC) ancestry, a population exhibiting genetic drift. OC cases and cancer-free individuals from FC and non-FC populations were investigated for carrier frequency of FANCI c.1813C>T; p.L605F, the top-ranking candidate. Gene and protein expression were investigated in cancer cell lines and tissue microarrays, respectively. Results In FC subjects, c.1813C>T was more common in familial (7.1%, 3/42) than sporadic (1.6%, 7/439) OC cases (P = 0.048). Carriers were detected in 2.5% (74/2950) of cancer-free females though female/male carriers were more likely to have a first-degree relative with OC (121/5249, 2.3%; Spearman correlation = 0.037; P = 0.011), suggesting a role in risk. Many of the cancer-free females had host factors known to reduce risk to OC which could influence cancer risk in this population. There was an increased carrier frequency of FANCI c.1813C>T in BRCA1 and BRCA2 pathogenic variant negative OC families, when including the discovery family, compared to cancer-free females (3/23, 13%; OR = 5.8; 95%CI = 1.7–19; P = 0.005). In non-FC subjects, 10 candidate FANCI variants were identified in 4.1% (21/516) of Australian OC cases negative for pathogenic variants in BRCA1 and BRCA2, including 10 carriers of FANCI c.1813C>T. Candidate variants were significantly more common in familial OC than in sporadic OC (P = 0.04). Localization of FANCD2, part of the FANCI-FANCD2 (ID2) binding complex in the Fanconi anaemia (FA) pathway, to sites of induced DNA damage was severely impeded in cells expressing the p.L605F isoform. This isoform was expressed at a reduced level, destabilized by DNA damaging agent treatment in both HeLa and OC cell lines, and exhibited sensitivity to cisplatin but not to a poly (ADP-ribose) polymerase inhibitor. By tissue microarray analyses, FANCI protein was consistently expressed in fallopian tube epithelial cells and only expressed at low-to-moderate levels in 88% (83/94) of OC samples. Conclusions This is the first study to describe candidate OC variants in FANCI, a member of the ID2 complex of the FA DNA repair pathway. Our data suggest that pathogenic FANCI variants may modify OC risk in cancer families. Supplementary Information The online version contains supplementary material available at 10.1186/s13073-021-00998-5.
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Affiliation(s)
- Caitlin T Fierheller
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,Cancer Research Program, Centre for Translational Biology, The Research Institute of the McGill University Health Centre, 1001 Decarie Boulevard, Montreal, Quebec, H4A 3 J1, Canada
| | - Laure Guitton-Sert
- Genome Stability Laboratory, CHU de Québec-Université Laval Research Center, Oncology Division, Quebec City, Quebec, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology, Laval University Cancer Research Center, Quebec City, Quebec, Canada
| | - Wejdan M Alenezi
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,Cancer Research Program, Centre for Translational Biology, The Research Institute of the McGill University Health Centre, 1001 Decarie Boulevard, Montreal, Quebec, H4A 3 J1, Canada.,Department of Medical Laboratory Technology, Taibah University, Medina, Saudi Arabia
| | - Timothée Revil
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,McGill Genome Centre, McGill University, Montreal, Quebec, Canada
| | - Kathleen K Oros
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada
| | - Yuandi Gao
- Genome Stability Laboratory, CHU de Québec-Université Laval Research Center, Oncology Division, Quebec City, Quebec, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology, Laval University Cancer Research Center, Quebec City, Quebec, Canada
| | - Karine Bedard
- Laboratoire de Diagnostic Moléculaire, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, Quebec, Canada.,Département de pathologie et biologie cellulaire, Université de Montréal, Montreal, Quebec, Canada
| | - Suzanna L Arcand
- Cancer Research Program, Centre for Translational Biology, The Research Institute of the McGill University Health Centre, 1001 Decarie Boulevard, Montreal, Quebec, H4A 3 J1, Canada
| | - Corinne Serruya
- Cancer Research Program, Centre for Translational Biology, The Research Institute of the McGill University Health Centre, 1001 Decarie Boulevard, Montreal, Quebec, H4A 3 J1, Canada
| | - Supriya Behl
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada
| | - Liliane Meunier
- Centre de recherche du Centre hospitalier de l'Université de Montréal and Institut du cancer de Montréal, Montreal, Quebec, Canada
| | - Hubert Fleury
- Centre de recherche du Centre hospitalier de l'Université de Montréal and Institut du cancer de Montréal, Montreal, Quebec, Canada
| | - Eleanor Fewings
- Department of Medical Genetics, National Institute for Health Research Cambridge Biomedical Research Centre, University of Cambridge, Cambridge, UK
| | - Deepak N Subramanian
- Cancer Genetics Laboratory, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Javad Nadaf
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,McGill Genome Centre, McGill University, Montreal, Quebec, Canada
| | - Jeffrey P Bruce
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Rachel Bell
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Diane Provencher
- Centre de recherche du Centre hospitalier de l'Université de Montréal and Institut du cancer de Montréal, Montreal, Quebec, Canada.,Division of Gynecologic Oncology, Université de Montréal, Montreal, Quebec, Canada
| | - William D Foulkes
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,Cancer Research Program, Centre for Translational Biology, The Research Institute of the McGill University Health Centre, 1001 Decarie Boulevard, Montreal, Quebec, H4A 3 J1, Canada.,Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada.,Department of Medicine, McGill University, Montreal, Quebec, Canada
| | - Zaki El Haffaf
- Centre de recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - Anne-Marie Mes-Masson
- Centre de recherche du Centre hospitalier de l'Université de Montréal and Institut du cancer de Montréal, Montreal, Quebec, Canada.,Department of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Jacek Majewski
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada
| | - Trevor J Pugh
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada.,Ontario Institute for Cancer Research, Toronto, Ontario, Canada
| | - Marc Tischkowitz
- Department of Medical Genetics, National Institute for Health Research Cambridge Biomedical Research Centre, University of Cambridge, Cambridge, UK
| | - Paul A James
- Cancer Genetics Laboratory, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia.,The Parkville Familial Cancer Centre, Peter MacCallum Cancer Centre and The Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Ian G Campbell
- Cancer Genetics Laboratory, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Celia M T Greenwood
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada.,Gerald Bronfman Department of Oncology, McGill University, Montreal, Quebec, Canada.,Department of Epidemiology, Biostatistics & Occupational Health, McGill University, Montreal, Quebec, Canada
| | - Jiannis Ragoussis
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,McGill Genome Centre, McGill University, Montreal, Quebec, Canada
| | - Jean-Yves Masson
- Genome Stability Laboratory, CHU de Québec-Université Laval Research Center, Oncology Division, Quebec City, Quebec, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology, Laval University Cancer Research Center, Quebec City, Quebec, Canada
| | - Patricia N Tonin
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada. .,Cancer Research Program, Centre for Translational Biology, The Research Institute of the McGill University Health Centre, 1001 Decarie Boulevard, Montreal, Quebec, H4A 3 J1, Canada. .,Department of Medicine, McGill University, Montreal, Quebec, Canada.
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7
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Kumamoto T, Yamazaki F, Nakano Y, Tamura C, Tashiro S, Hattori H, Nakagawara A, Tsunematsu Y. Medical guidelines for Li-Fraumeni syndrome 2019, version 1.1. Int J Clin Oncol 2021; 26:2161-2178. [PMID: 34633580 PMCID: PMC8595164 DOI: 10.1007/s10147-021-02011-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 08/19/2021] [Indexed: 11/05/2022]
Abstract
Li–Fraumeni syndrome (LFS) is a hereditary tumor that exhibits autosomal dominant inheritance. LFS develops in individuals with a pathogenic germline variant of the cancer-suppressor gene, TP53 (individuals with TP53 pathogenic variant). The number of individuals with TP53 pathogenic variant among the general population is said to be 1 in 500 to 20,000. Meanwhile, it is found in 1.6% (median value, range of 0–6.7%) of patients with pediatric cancer and 0.2% of adult patients with cancer. LFS is diagnosed by the presence of germline TP53 pathogenic variants. However, patients can still be diagnosed with LFS even in the absence of a TP53 pathogenic variant if the familial history of cancers fit the classic LFS diagnostic criteria. It is recommended that TP53 genetic testing be promptly performed if LFS is suspected. Chompret criteria are widely used for the TP53 genetic test. However, as there are a certain number of cases of LFS that do not fit the criteria, if LFS is suspected, TP53 genetic testing should be performed regardless of the criteria. The probability of individuals with TP53 pathogenic variant developing cancer in their lifetime (penetrance) is 75% for men and almost 100% for women. The LFS core tumors (breast cancer, osteosarcoma, soft tissue sarcoma, brain tumor, and adrenocortical cancer) constitute the majority of cases; however, various types of cancers, such as hematological malignancy, epithelial cancer, and pediatric cancers, such as neuroblastoma, can also develop. Furthermore, approximately half of the cases develop simultaneous or metachronous multiple cancers. The types of TP53 pathogenic variants and factors that modify the functions of TP53 have an impact on the clinical presentation, although there are currently no definitive findings. There is currently no cancer preventive agent for individuals with TP53 pathogenic variant. Surgical treatments, such as risk-reducing bilateral mastectomy warrant further investigation. Theoretically, exposure to radiation could induce the onset of secondary cancer; therefore, imaging and treatments that use radiation should be avoided as much as possible. As a method to follow-up LFS, routine cancer surveillance comprising whole-body MRI scan, brain MRI scan, breast MRI scan, and abdominal ultrasonography (US) should be performed immediately after the diagnosis. However, the effectiveness of this surveillance is unknown, and there are problems, such as adverse events associated with a high rate of false positives, overdiagnosis, and sedation used during imaging as well as negative psychological impact. The detection rate of cancer through cancer surveillance is extremely high. Many cases are detected at an early stage, and treatments are low intensity; thus, cancer surveillance could contribute to an improvement in QOL, or at least, a reduction in complications associated with treatment. With the widespread use of genomic medicine, the diagnosis of LFS is unavoidable, and a comprehensive medical care system for LFS is necessary. Therefore, clinical trials that verify the feasibility and effectiveness of the program, comprising LFS registry, genetic counseling, and cancer surveillance, need to be prepared.
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Affiliation(s)
- Tadashi Kumamoto
- Department of Pediatric Oncology, National Cancer Center Hospital, Tokyo, Japan.
| | - Fumito Yamazaki
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
| | - Yoshiko Nakano
- Division of Brain Tumor Translational Research, National Cancer Center Research Institute, Tokyo, Japan.,Department of Pediatrics, The University of Tokyo Hospital, Tokyo, Japan
| | - Chieko Tamura
- Medical Information and Genetic Counseling Division, FMC Tokyo Clinic, Tokyo, Japan
| | - Shimon Tashiro
- Department of Sociology, Graduate School of Arts and Letters, Tohoku University, Sendai, Japan
| | - Hiroyoshi Hattori
- Department of Clinical Genetics, National Hospital Organization Nagoya Medical Center, Aichi, Japan
| | - Akira Nakagawara
- Saga International Heavy Ion Cancer Radiation Therapy Center, Saga, Japan
| | - Yukiko Tsunematsu
- Saga International Heavy Ion Cancer Radiation Therapy Center, Saga, Japan
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8
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Committee Of Diagnosis Treatment And Fertility Management Of Chinese Young Breast Cancer Patients. Expert consensus on diagnosis, treatment and fertility management of young breast cancer patients. JOURNAL OF THE NATIONAL CANCER CENTER 2021; 1:23-30. [PMID: 39036789 PMCID: PMC11256642 DOI: 10.1016/j.jncc.2021.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 02/04/2021] [Accepted: 02/08/2021] [Indexed: 01/02/2023] Open
Abstract
Breast cancer in young females is a relatively common disease in China. Young breast cancer has aggressive clinical and pathological features. During the treatment of young females with breast cancer, issues involving the choice of surgical methods, early amenorrhea, and fertility protection may have physical, psychological, and social impacts. Thus, a multidisciplinary model of diagnosis and treatment is indispensable. The breast cancer expert committee of the National Cancer Quality Control Center organized experts in related fields in China to compile this consensus as to provide scientific and feasible solutions for rational diagnosis, treatment, and fertility management for young females with breast cancer. This consensus is based on the literature data, the views of relevant international guidelines, and the clinical practice experience of experts in different fields.
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9
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You C, Xiao Q, Zhu X, Sun Y, Di G, Liu G, Hou Y, Chen C, Wu J, Shao Z, Gu Y, Hu Z. The clinicopathological and MRI features of patients with BRCA1/2 mutations in familial breast cancer. Gland Surg 2021; 10:262-272. [PMID: 33633982 DOI: 10.21037/gs-20-596] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Background To determine the histopathological and MRI features of BRCA1/2 mutation-associated familial breast cancers compared with those of BRCA1/2 mutation-negative and sporadic breast cancers and to further compare the imaging features of cancers from BRCA1 and BRCA2 mutation carriers according to lesion type on MRI. Methods A retrospective review of medical records was conducted to determine tumour clinicopathologic features and MRI characteristics between June 2011 and July 2017, and 93 lesions with BRCA mutations, 93 lesions without BRCA mutations from familial breast cancers and 93 lesions from sporadic breast cancers were included. Histopathologic data, including immunohistochemistry findings and MRI data according to the BI-RADS lexicon, were reviewed. The association between MRI or histopathologic findings and BRCA mutations was analysed. Results BRCA-positive familial breast cancers had a higher number of IDCs with high nuclear grade and lymph node metastasis (all P<0.05), while the BRCA-negative group had a significantly lower Ki-67 index (P<0.001). BPE on MRI was found to be significantly lower for BRCA mutations of familial breast cancer (P=0.024). BRCA1 carriers tended to exhibit the triple-negative phenotype with a more benign shape and margin (P=0.006 and 0.019), whereas BRCA2 mutations were associated with the luminal phenotype and more malignant features. Conclusions BRCA mutation carriers had a significantly higher number of IDCs with more aggressive cancer, and BRCA-negative cancers had low proliferation levels. Background features on MRI may help to identify BRCA status, while tumour characteristics can differentiate the BRCA1/2 mutation status, consistent with the differences in their clinicopathologic features.
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Affiliation(s)
- Chao You
- Department of Radiology, Fudan University Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Qin Xiao
- Department of Radiology, Fudan University Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xinyi Zhu
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yiqun Sun
- Department of Radiology, Fudan University Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Genhong Di
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Guangyu Liu
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yifeng Hou
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Canming Chen
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jiong Wu
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhimin Shao
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yajia Gu
- Department of Radiology, Fudan University Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhen Hu
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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10
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Kwong A, Shin VY, Ho CYS, Au CH, Slavin TP, Weitzel JN, Chan TL, Ma ESK. Mutation screening of germline TP53 mutations in high-risk Chinese breast cancer patients. BMC Cancer 2020; 20:1053. [PMID: 33138793 PMCID: PMC7607817 DOI: 10.1186/s12885-020-07476-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 09/30/2020] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Germline TP53 mutations are associated with Li-Fraumeni syndrome, a severe and rare hereditary cancer syndrome. Despite the rarity of germline TP53 mutations, the clinical implication for mutation carriers and their families is significant. The risk management of TP53 germline mutation carriers is more stringent than BRCA carriers, and radiotherapy should be avoided when possible. METHODS TP53 gene mutation screening was performed in 2538 Chinese breast cancer patients who tested negative for BRCA mutations. RESULTS Twenty TP53 mutations were identified with high next-generation sequencing concerning for germline mutations in Chinese breast cancer families. The majorities of the TP53 carriers had early-onset, hormone receptor-positive breast cancer, and had strong family history of cancer. Among all, 11 patients carried a germline mutation and 6 of which were likely de novo germline mutations. In addition, 1 case was suspected to be induced by chemotherapy or radiation, as this patient had no significant family history of cancer and aberrant clonal expansion can commonly include TP53 mutations. Furthermore, we have identified one mosaic LFS case. Two novel mutations (c.524_547dup and c.529_546del) were identified in patients with early-onset. CONCLUSIONS In view of the high lifetime risk of malignancy, identification of patients with germline TP53 mutations are important for clinicians to aid in accurate risk assessment and offer surveillance for patients and their families.
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Affiliation(s)
- Ava Kwong
- Department of Surgery, The University of Hong Kong and University of Hong Kong-Shenzhen Hospital, Hong Kong SAR, China.
- Department of Surgery, Hong Kong Sanatorium & Hospital, Hong Kong SAR, China.
- Hong Kong Hereditary Breast Cancer Family Registry, Hong Kong SAR, China.
| | - Vivian Yvonne Shin
- Department of Surgery, The University of Hong Kong and University of Hong Kong-Shenzhen Hospital, Hong Kong SAR, China
| | - Cecilia Y S Ho
- Department of Pathology, Division of Molecular Pathology, Hong Kong Sanatorium & Hospital, Hong Kong SAR, China
| | - Chun Hang Au
- Department of Pathology, Division of Molecular Pathology, Hong Kong Sanatorium & Hospital, Hong Kong SAR, China
| | - Thomas P Slavin
- Department of Medical Oncology & Therapeutics Research, Division of Clinical Cancer Genetics, City of Hope, Duarte, CA, USA
- Department of Population Sciences, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Jeffrey N Weitzel
- Department of Medical Oncology & Therapeutics Research, Division of Clinical Cancer Genetics, City of Hope, Duarte, CA, USA
- Department of Population Sciences, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Tsun-Leung Chan
- Hong Kong Hereditary Breast Cancer Family Registry, Hong Kong SAR, China
- Department of Pathology, Division of Molecular Pathology, Hong Kong Sanatorium & Hospital, Hong Kong SAR, China
| | - Edmond S K Ma
- Hong Kong Hereditary Breast Cancer Family Registry, Hong Kong SAR, China
- Department of Pathology, Division of Molecular Pathology, Hong Kong Sanatorium & Hospital, Hong Kong SAR, China
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11
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Lang GT, Shi JX, Huang L, Cao AY, Zhang CH, Song CG, Zhuang ZG, Hu X, Huang W, Shao ZM. Multiple cancer susceptible genes sequencing in BRCA-negative breast cancer with high hereditary risk. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1417. [PMID: 33313162 PMCID: PMC7723566 DOI: 10.21037/atm-20-2999] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background Hereditary factors contributed to breast cancer susceptibility. Low BRCA mutation prevalence was demonstrated in previous BRCA mutation screening in Chinese breast cancer patients. Multiple-gene sequencing may assist in discovering detrimental germline mutation in BRCA negative breast cancers. Methods A total of 384 Chinese subjects with any two of high-risk factors were recruited and screened by next-generation sequencing (NGS) for 30 cancer susceptible genes. Variants with a truncating, initiation codon or splice donor/acceptor effect, or with pathogenicity demonstrated in published literature were classified into pathogenic/likely-pathogenic mutations. Results In total, we acquired 39 (10.2%) patients with pathogenic/likely-pathogenic germline mutations, including one carrying two distinct mutations. Major mutant non-BRCA genes were MUTYH (n=11, 2.9%), PTCH1 (n=7, 1.8%), RET (n=6, 1.6%) and PALB2 (n=5, 1.3%). Other mutant genes included TP53 (n=3, 0.8%), RAD51D (n=2, 0.5%), CHEK2 (n=1, 0.3%), BRIP1 (n=1, 0.3%), CDH1 (n=1, 0.3%), MRE11 (n=1, 0.3%), RAD50 (n=1, 0.3%) and PALLD (n=1, 0.3%). A splicing germline mutation, MUTYH c.934-2A>G, was a hotspot (9/384, 2.3%) in Chinese breast cancer. Conclusions Among BRCA-negative breast cancer patients with high hereditary risk in China, 10.2% carried mutations in cancer associated susceptibility genes. MUTYH and PTCH1 had relatively high mutation rates (2.9% and 1.8%). Multigene testing contributes to understand genetic background of BRCA-negative breast cancer patients with high hereditary risk.
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Affiliation(s)
- Guan-Tian Lang
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jin-Xiu Shi
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai (CHGC) and Shanghai Industrial Technology Institute (SITI), Shanghai, China
| | - Liang Huang
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - A-Yong Cao
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Chen-Hui Zhang
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai (CHGC) and Shanghai Industrial Technology Institute (SITI), Shanghai, China
| | - Chuan-Gui Song
- Department of Breast Surgery, Affiliated Union Hospital, Fujian Medical University, Fuzhou, China
| | - Zhi-Gang Zhuang
- Department of Breast Surgery, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xin Hu
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wei Huang
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai (CHGC) and Shanghai Industrial Technology Institute (SITI), Shanghai, China
| | - Zhi-Ming Shao
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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12
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Identification of Recurrent Variants in BRCA1 and BRCA2 across Multiple Cancers in the Chinese Population. BIOMED RESEARCH INTERNATIONAL 2020; 2020:6739823. [PMID: 32879886 PMCID: PMC7448236 DOI: 10.1155/2020/6739823] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 05/14/2020] [Accepted: 07/07/2020] [Indexed: 12/24/2022]
Abstract
BRCA1 and BRCA2 as important DNA repair genes have been thoroughly investigated in abundant studies. The potential relationships of BRCA1/2 pathogenic variants between multicancers have been verified in Caucasians but few in Chinese. In this study, we performed a two-stage study to screen BRCA1/2 pathogenic variants or variants of uncertain significance (VUS) with 7580 cancer cases and 4874 cancer-free controls, consisting of a discovery stage with 70 familial breast cancer cases and a subsequent validation stage with 7510 cases (3217 breast cancer, 1133 cervical cancer, 2044 hepatocellular carcinoma, and 1116 colorectal cancer). 48 variants were obtained from 70 familial breast cancer cases after BRCA1/2 exon detection, and finally, 20 pathogenic variants or VUS were selected for subsequent validation. Four recurrent variants in sporadic cases (BRCA1 c.4801A>T, BRCA1 c.3257del, BRCA1 c.440del, and BRCA2 c.7409dup) were identified and three of them were labeled Class 5 by ENIGMA. Two variants (BRCA1 c.3257del and c.440del) were specific in breast cancer cases, while BRCA2 c.7409dup and c.4307T>C were detected in two hepatocellular carcinoma patients and the BRCA1 c.4801A>T variant in one cervical cancer patient, respectively. Moreover, BRCA1 c.3257del was the most frequent variant observed in Chinese sporadic breast cancer and showed increased proliferation of BRCA1 c.3257del-overexpressing triple-negative breast cancer cell lines (MDA-MB-231) in vitro. In addition to the known founder deleterious mutations, our findings highlight that the recurrently pathogenic variants in breast cancer cases could be taken as candidate genetic screening loci for a more efficient genetic screening of the Chinese population.
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13
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El Ansari FZ, Jouali F, Marchoudi N, Bennani MM, Ghailani NN, Barakat A, Fekkak J. Screening of BRCA1/2 genes mutations and copy number variations in patients with high risk for hereditary breast and ovarian cancer syndrome (HBOC). BMC Cancer 2020; 20:747. [PMID: 32778078 PMCID: PMC7418307 DOI: 10.1186/s12885-020-07250-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 08/03/2020] [Indexed: 12/12/2022] Open
Abstract
Background Hereditary breast and ovarian cancer (HBOC) is an autosomal dominant inherited cancer susceptibility disorder. Both BRCA1 and BRCA2 genes are considered as high penetrance genes of this syndrome. The identification of BRCA1/2 genetic alterations before cancer development, grant patients the chance to benefit from various medical cancer prevention approaches. Therefore, the appearance of recent advanced technologies in molecular analysis such as next generation sequencing has simplified full BRCA1/2 analysis. Many attempts took place in hope of understanding the molecular germline spectrum of these two genes in Moroccan HBOC patients. However, most of the past projects focused only on young breast cancer cases, lacked ovarian cancer cases in their cohort and only a limited number of these studies were able to analyze the entire exons or copy number variations for both genes. In attempt of gaining more information regarding the molecular profile of BRCA1/2 in HBOC, we conducted a study in which we analyze their molecular profile on selected Moroccan patients suspected of having HBOC syndrome. Methods In this study we obtained blood samples from 64 selected Moroccan patients, who suffered from Breast and/or ovarian cancer and had a strong family history for cancer. To analyze BRCA1/2 punctual variants and copy number variations, we used the Ion Personal Genome Machine (PGM) and Oncomine BRCA1/2 research assay panel. Afterward, we correlated the molecular results with the clinic-pathologic data using IBM SPSS Statistics ver 2. Results From the 64 selected cases, Forty-six had breast cancer, fifteen had ovarian cancer and three had both breast and ovarian cancer. The molecular analysis revealed that 18 patients from the 64 harbored a pathogenic variant (28%). Twelve had six different BRCA1 pathogenic variants and six had six different BRCA2 pathogenic variants. In this study, we report four pathogenic variants that to the best of our knowledge has never been reported in the Moroccan population before. Regarding copy number variation analysis, No CNV was detected in both genes for all the 64 successfully sequenced and analyzed patients in our cohort. Conclusion Work like the present has an important implication on public health and science. It is critical that molecular profiling studies are performed on underserved and understudied population like Morocco.
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Affiliation(s)
- Fatima Zahra El Ansari
- Biomedical Genomics and Oncogenetics Research Laboratory, Faculty of Sciences and Techniques of Tangier, University Abdelmalek Essaâdi, 90000, Tangier, Morocco. .,Molecular Biology Department, ANOUAL Laboratory, Casablanca, Morocco.
| | - Farah Jouali
- Molecular Biology Department, ANOUAL Laboratory, Casablanca, Morocco
| | - Nabila Marchoudi
- Molecular Biology Department, ANOUAL Laboratory, Casablanca, Morocco
| | - Mohcine Mechita Bennani
- Biomedical Genomics and Oncogenetics Research Laboratory, Faculty of Sciences and Techniques of Tangier, University Abdelmalek Essaâdi, 90000, Tangier, Morocco
| | - Naima Nourouti Ghailani
- Biomedical Genomics and Oncogenetics Research Laboratory, Faculty of Sciences and Techniques of Tangier, University Abdelmalek Essaâdi, 90000, Tangier, Morocco
| | - Amina Barakat
- Biomedical Genomics and Oncogenetics Research Laboratory, Faculty of Sciences and Techniques of Tangier, University Abdelmalek Essaâdi, 90000, Tangier, Morocco
| | - Jamal Fekkak
- Molecular Biology Department, ANOUAL Laboratory, Casablanca, Morocco
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14
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Suszynska M, Kozlowski P. Summary of BARD1 Mutations and Precise Estimation of Breast and Ovarian Cancer Risks Associated with the Mutations. Genes (Basel) 2020; 11:genes11070798. [PMID: 32679805 PMCID: PMC7397132 DOI: 10.3390/genes11070798] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 12/12/2022] Open
Abstract
Over the last two decades, numerous BARD1 mutations/pathogenic variants (PVs) have been found in patients with breast cancer (BC) and ovarian cancer (OC). However, their role in BC and OC susceptibility remains controversial, and strong evidence-based guidelines for carriers are not yet available. Herein, we present a comprehensive catalog of BARD1 PVs identified in large cumulative cohorts of ~48,700 BC and ~20,800 OC cases (retrieved from 123 studies examining the whole coding sequence of BARD1). Using these resources, we compared the frequency of BARD1 PVs in the cases and ~134,100 controls from the gnomAD database and estimated the effect of the BARD1 PVs on BC and OC risks. The analysis revealed that BARD1 is a BC moderate-risk gene (odds ratio (OR) = 2.90, 95% CIs:2.25–3.75, p < 0.0001) but not an OC risk gene (OR = 1.36, 95% CIs:0.87–2.11, p = 0.1733). In addition, the BARD1 mutational spectrum outlined in this study allowed us to determine recurrent PVs and evaluate the variant-specific risk for the most frequent PVs. In conclusion, these precise estimates improve the understanding of the role of BARD1 PVs in BC and OC predisposition and support the need for BARD1 diagnostic testing in BC patients.
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Affiliation(s)
| | - Piotr Kozlowski
- Correspondence: ; Tel.: +48-618-528-503 (ext. 261); Fax: +48-618-520-532
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15
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Hussein IA, Ahmed ST, Hameedi AD, Naji RZ, Alharbawi L, Alkhaytt M, Pity IS. Immunohistochemical Expression of BRCA1 Protein, ER, PR and Her2/neu in Breast Cancer: A Clinicopathological Study. Asian Pac J Cancer Prev 2020; 21:1025-1029. [PMID: 32334465 PMCID: PMC7445993 DOI: 10.31557/apjcp.2020.21.4.1025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Indexed: 11/25/2022] Open
Abstract
Breast cancer is a heterogeneous hormone-dependent disease. Potential prognosis depends on the clinicopathological evaluation and assessment of other prognostic indicators. The detection of the oestrogen Receptor (ER), Progesterone Receptor (PR), Human epidermal growth factor receptor 2 (Her2/neu) and BRCA1 oncoprotein is pivotal for prognostic evaluation and to choose the appropriate post-surgical adjuvant therapy beside selecting the proper candidate for genetic counselling. OBJECTIVES To detect the immunoexpression of the BRCA1 oncoprotein in mammary invasive ducal carcinoma and its association with the prognostic markers (ER, PR and Her2/neu hormonal receptors) and other clinicopathological parameters to improve the patients' treatment plans. METHODS A cross-sectional study design including 83 paraffin blocks and histological slides collected from Al-Jumhoori Medical City Teaching Hospital Laboratory in Mosul and the Central Public Health Laboratory in Baghdad between the 1st of January 2010 to the 13th of March 2012 for patients diagnosed with primary invasive ductal breast carcinomas. Immunohistochemistry (IHC) using monoclonal antibodies against ER, PR, Her2/neu receptors and BRCA1 protein was performed via the fully automated immunostaining instrument 'Ventana Benchmark'. RESULTS BRCA1 protein immunoexpression was detected in 20.5% of cases. It was significantly high with increasing tumour grade and stage. Although there was a trend of BRCA1 negativity toward negative ER, PR and Her2 receptors, no significant associations were observed with any of these parameters and the patients' age. CONCLUSION Altered BRCA1 expression is significantly associated with advanced tumour grade and stage. High number of cases with negative BRCA1 expression showed negative ER, PR and Her2/neu expression.
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Affiliation(s)
- Israa A Hussein
- MBChB, FIBMS Pathology, Department of Pathology, College of Medicine, University of Baghdad, Baghdad, Iraq
| | - Shatha Th Ahmed
- MBChB, PhD mol. Pathology/ UK, College of Medicine, Ninevah University, Baghdad , Iraq
| | - Ameer D Hameedi
- MBChB, FIBMS Pathology, Department of Pathology, College of Medicine, University of Baghdad, Baghdad, Iraq
| | - Rana Z Naji
- MBChB, FIBMS Pathology,Oncology Teaching Hospital, College of Medicine, University of Duhok, Baghdad , Iraq
| | - Layth Alharbawi
- MBChB, CABS, General Surgeon, College of Medicine, Ninevah University, Baghdad, Iraq
| | - Muzahm Alkhaytt
- MBChB, FRCS, President of Nineveh University, Ninevah University, Baghdad , Iraq
| | - Intisar S Pity
- MD, FIBMS, Pathology, College of Medicine, University of Duhok, Baghdad, Iraq
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16
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Jarhelle E, Riise Stensland HMF, Hansen GÅM, Skarsfjord S, Jonsrud C, Ingebrigtsen M, Strømsvik N, Van Ghelue M. Identifying sequence variants contributing to hereditary breast and ovarian cancer in BRCA1 and BRCA2 negative breast and ovarian cancer patients. Sci Rep 2019; 9:19986. [PMID: 31882575 PMCID: PMC6934654 DOI: 10.1038/s41598-019-55515-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 11/26/2019] [Indexed: 12/21/2022] Open
Abstract
Families with breast and ovarian cancer are often tested for disease associated sequence variants in BRCA1 and BRCA2. Pathogenic sequence variants (PVs) in these two genes are known to increase breast and ovarian cancer risks in females. However, in most families no PVs are detected in these two genes. Currently, several studies have identified other genes involved in hereditary breast and ovarian cancer (HBOC). To identify genetic risk factors for breast and ovarian cancer in a Norwegian HBOC cohort, 101 breast and/or ovarian cancer patients negative for PVs and variants of unknown clinical significance (VUS) in BRCA1/2 were screened for PVs in 94 genes using next-generation sequencing. Sixteen genes were closely scrutinized. Nine different deleterious germline PVs/likely pathogenic variants (LPVs) were identified in seven genes in 12 patients: three in ATM, and one in CHEK2, ERCC5, FANCM, RAD51C, TP53 and WRN. Additionally, 32 different VUSs were identified and these require further characterization. For carriers of PV/LPV in many of these genes, there are no national clinical management programs in Norway. The diversity of genetic risk factors possibly involved in cancer development show the necessity for more knowledge to improve the clinical follow-up of this genetically diverse patient group.
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Affiliation(s)
- Elisabeth Jarhelle
- Department of Medical Genetics, Division of Child and Adolescent Health, University Hospital of North Norway, Tromsø, Norway. .,Department of Clinical Medicine, University of Tromsø, Tromsø, Norway. .,Northern Norway Family Cancer Center, Department of Medical Genetics, University Hospital of North Norway, Tromsø, Norway.
| | - Hilde Monica Frostad Riise Stensland
- Department of Medical Genetics, Division of Child and Adolescent Health, University Hospital of North Norway, Tromsø, Norway.,Northern Norway Family Cancer Center, Department of Medical Genetics, University Hospital of North Norway, Tromsø, Norway
| | - Geir Åsmund Myge Hansen
- Department of Medical Genetics, Division of Child and Adolescent Health, University Hospital of North Norway, Tromsø, Norway.,Northern Norway Family Cancer Center, Department of Medical Genetics, University Hospital of North Norway, Tromsø, Norway
| | - Siri Skarsfjord
- Department of Medical Genetics, Division of Child and Adolescent Health, University Hospital of North Norway, Tromsø, Norway
| | - Christoffer Jonsrud
- Department of Medical Genetics, Division of Child and Adolescent Health, University Hospital of North Norway, Tromsø, Norway.,Northern Norway Family Cancer Center, Department of Medical Genetics, University Hospital of North Norway, Tromsø, Norway
| | - Monica Ingebrigtsen
- Department of Medical Genetics, Division of Child and Adolescent Health, University Hospital of North Norway, Tromsø, Norway
| | - Nina Strømsvik
- Department of Medical Genetics, Division of Child and Adolescent Health, University Hospital of North Norway, Tromsø, Norway.,Northern Norway Family Cancer Center, Department of Medical Genetics, University Hospital of North Norway, Tromsø, Norway.,Department of Health and Caring Sciences, Western Norway University of Applied Sciences, Bergen, Norway
| | - Marijke Van Ghelue
- Department of Medical Genetics, Division of Child and Adolescent Health, University Hospital of North Norway, Tromsø, Norway. .,Department of Clinical Medicine, University of Tromsø, Tromsø, Norway. .,Northern Norway Family Cancer Center, Department of Medical Genetics, University Hospital of North Norway, Tromsø, Norway.
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17
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Catana A, Apostu AP, Antemie RG. Multi gene panel testing for hereditary breast cancer - is it ready to be used? Med Pharm Rep 2019; 92:220-225. [PMID: 31460501 PMCID: PMC6709965 DOI: 10.15386/mpr-1083] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 02/28/2019] [Accepted: 03/27/2019] [Indexed: 02/06/2023] Open
Abstract
Breast cancer is one of the most common malignancies and the leading cause of death among women worldwide. About 20% of breast cancers are hereditary. Approximately 30% of the mutations have remained negative after testing BRCA1/2 even in families with a Mendelian inheritance pattern for breast cancer. Additional non-BRCA genes have been identified as predisposing for breast cancer. Multi gene panel testing tries to cover and explain the BRCA negative inherited breast cancer, improving efficiency, speed and costs of the breast cancer screening. We identified 23 studies reporting results from individuals who have undergone multi gene panel testing for hereditary breast cancer and noticed a prevalence of 1-12% of non-BRCA genes, but also a high level of variants of uncertain significance. A result with a high level of variants of uncertain significance is likely to be more costly than bring benefits, as well as increase the anxiety for patients. Regarding further development of multi gene panel testing, more research is required to establish both the optimal care of patients with cancer (specific treatments like PARP inhibitors) and the management of unaffected individuals (chemoprevention and/or prophylactic surgeries). Early detection in these patients as well as prophylactic measures will significantly increase the chance of survival. Therefore, multi gene panel testing is not yet ready to be used outside clear guidelines. In conclusion, studies on additional cohorts will be needed to better define the real prevalence, penetrance and the variants of these genes, as well as to describe clear evidence-based guidelines for these patients.
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Affiliation(s)
- Andreea Catana
- Genetics Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | | | - Razvan-Geo Antemie
- Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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18
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Bermisheva MA, Gilyazova IR, Akhmadishina LZ, Gimalova GF, Zinnatullina GF, Khusnutdinova EK. A WRN Nonsense Mutation, p.R1406X, is Not a Risk Factor of Breast Cancer. RUSS J GENET+ 2019. [DOI: 10.1134/s1022795419070056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Pan ZW, Wang XJ, Chen T, Ding XW, Jiang X, Gao Y, Mo WJ, Huang Y, Lou CJ, Cao WM. Deleterious Mutations in DNA Repair Gene FANCC Exist in BRCA1/2-Negative Chinese Familial Breast and/or Ovarian Cancer Patients. Front Oncol 2019; 9:169. [PMID: 30967997 PMCID: PMC6439399 DOI: 10.3389/fonc.2019.00169] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 02/26/2019] [Indexed: 01/17/2023] Open
Abstract
Introduction: FANCC is reported as a novel susceptibility gene for breast cancer, however, its mutation remains unclear in Chinese population. We aimed to identify the germline mutations of FANCC in high-risk breast cancer patients in China. Methods: 255 BRCA1/2-negative Chinese familial breast and/or ovarian cancer (FBOC) patients were recruited for FANCC germline mutations screen. For whom 90 patients were detected by PCR-sequencing assay, and another 165 patients were detected by a 98-gene panel sequencing assay. The 98-gene panel sequencing assay was also used to screen other possible gene mutations for the patients with FANCC mutations detected by PCR-sequencing assay. Two hundred and fifty sporadic breast cancer (SBC) patients and 248 female non-cancer controls (FNCCs) were recruited for the genotyping analysis. Immunohistochemistry (IHC) analysis was used to evaluate the FANCC expression in patients with FANCC mutation. Results: We found one rare FANCC deleterious mutation (c.339G>A, p.W113X, 0.4%) and two novel non-synonymous variants (c.51G>C, p.Q17H, 0.4% and c.758C>A, p.A253E, 0.4%) in FBOC patients, whereas none of above mutations was identified in SBC patients or FNCCs. We also found that one novel synonymous variant (c.903A>G, p.A301A) existed in one FBOC patient. Additionally, two non-synonymous SNPs rs201407189 (c.973G>A, p.A325T) and rs1800367 (c.1345G>A, p.V449M), and two synonymous SNPs rs55719336 (c.816C>T, p.I272I) and rs79722116 (c.1407G>A, p.T469T) were identified in FBOC patients. Conclusion: FANCC deleterious mutations exist in Chinese FBOC patients and investigations on the penetrance and spectrum of FANCC mutations need to be further conducted.
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Affiliation(s)
- Zhi-Wen Pan
- Department of Clinical Laboratory, Zhejiang Cancer Hospital, Hangzhou, China
| | - Xiao-Jia Wang
- Department of Breast Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, China
| | - Tianhui Chen
- Group of Molecular Epidemiology & Cancer Precision Prevention (GMECPP), Zhejiang Academy of Medical Sciences (ZJAMS), Hangzhou, China
| | - Xiao-Wen Ding
- Department of Breast Cancer Surgery, Zhejiang Cancer Hospital, Hangzhou, China
| | - Xiyi Jiang
- Group of Molecular Epidemiology & Cancer Precision Prevention (GMECPP), Zhejiang Academy of Medical Sciences (ZJAMS), Hangzhou, China
| | - Yun Gao
- Institute of Cancer Research, Zhejiang Cancer Hospital, Hangzhou, China
| | - Wen-Ju Mo
- Department of Breast Cancer Surgery, Zhejiang Cancer Hospital, Hangzhou, China
| | - Yuan Huang
- Department of Breast Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, China
| | - Cai-Jin Lou
- Department of Breast Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, China
| | - Wen-Ming Cao
- Department of Breast Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, China
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20
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Bhaskaran SP, Chandratre K, Gupta H, Zhang L, Wang X, Cui J, Kim YC, Sinha S, Jiang L, Lu B, Wu X, Qin Z, Huang T, Wang SM. Germline variation in BRCA1/2 is highly ethnic-specific: Evidence from over 30,000 Chinese hereditary breast and ovarian cancer patients. Int J Cancer 2019; 145:962-973. [PMID: 30702160 PMCID: PMC6617753 DOI: 10.1002/ijc.32176] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/14/2019] [Accepted: 01/25/2019] [Indexed: 01/04/2023]
Abstract
BRCA1 and BRCA2 play essential roles in maintaining the genome stability. Pathogenic germline mutations in these two genes disrupt their function, lead to genome instability and increase the risk of developing breast and ovarian cancers. BRCA mutations have been extensively screened in Caucasian populations, and the resulting information are used globally as the standard reference in clinical diagnosis, treatment and prevention of BRCA-related cancers. Recent studies suggest that BRCA mutations can be ethnic-specific, raising the question whether a Caucasian-based BRCA mutation information can be used as a universal standard worldwide, or whether an ethnicity-based BRCA mutation information system need to be developed for the corresponding ethnic populations. In this study, we used Chinese population as a model to test ethnicity-specific BRCA mutations considering that China has one of the latest numbers of breast cancer patients therefore BRCA mutation carriers. Through comprehensive data mining, standardization and annotation, we collected 1,088 distinct BRCA variants derived from over 30,000 Chinese individuals, one of the largest BRCA data set from a non-Caucasian population covering nearly all known BRCA variants in the Chinese population (https://dbBRCA-Chinese.fhs.umac.mo). Using this data, we performed multi-layered analyses to determine the similarities and differences of BRCA variation between Chinese and non-Chinese ethnic populations. The results show the substantial differences of BRCA data between Chinese and non-Chinese ethnicities. Our study indicates that the current Caucasian population-based BRCA data is not adequate to represent the BRCA status in non-Caucasian populations. Therefore, ethnic-based BRCA standards need to be established to serve for the non-Caucasian populations.
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Affiliation(s)
- Shanmuga Priya Bhaskaran
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
| | - Khyati Chandratre
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
| | - Hemant Gupta
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
| | - Li Zhang
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
| | - Xiaoyu Wang
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
| | - Jian Cui
- Eppley Cancer Institute, University of Nebraska Medical Center, Omaha, NE
| | - Yeong C Kim
- Eppley Cancer Institute, University of Nebraska Medical Center, Omaha, NE
| | - Siddharth Sinha
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
| | - Luhan Jiang
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
| | - Boya Lu
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
| | - Xiaobing Wu
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
| | - Zixin Qin
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
| | - Teng Huang
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
| | - San Ming Wang
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
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21
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Li JY, Jing R, Wei H, Wang M, Xiaowei Q, Liu H, Jian L, Ou JH, Jiang WH, Tian FG, Sheng Y, Li HY, Xu H, Zhang RS, Guan AH, Liu K, Jiang HC, Ren Y, He JJ, Huang W, Liao N, Cai X, Ming J, Ling R, Xu Y, Hu CY, Zhang J, Guo B, Ouyang L, Shuai P, Liu Z, Zhong L, Zeng Z, Zhang T, Xuan Z, Tan X, Liang J, Pan Q, Chen L, Zhang F, Fan LJ, Zhang Y, Yang X, BoLi J, Chen C, Jiang J. Germline mutations in 40 cancer susceptibility genes among Chinese patients with high hereditary risk breast cancer. Int J Cancer 2018; 144:281-289. [PMID: 29752822 DOI: 10.1002/ijc.31601] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 04/13/2018] [Accepted: 04/25/2018] [Indexed: 01/08/2023]
Abstract
Multigene panel testing of breast cancer predisposition genes have been extensively conducted in Europe and America, which is relatively rare in Asia however. In this study, we assessed the frequency of germline mutations in 40 cancer predisposition genes, including BRCA1 and BRCA2, among a large cohort of Chinese patients with high hereditary risk of BC. From 2015 to 2016, consecutive BC patients from 26 centers of China with high hereditary risk were recruited (n = 937). Clinical information was collected and next-generation sequencing (NGS) was performed using blood samples of participants to identify germline mutations. In total, we acquired 223 patients with putative germline mutations, including 159 in BRCA1/2, 61 in 15 other BC susceptibility genes and 3 in both BRCA1/2 and non-BRCA1/2 gene. Major mutant non-BRCA1/2 genes were TP53 (n = 18), PALB2 (n = 11), CHEK2 (n = 6), ATM (n = 6) and BARD1 (n = 5). No factors predicted pathologic mutations in non-BRCA1/2 genes when treated as a whole. TP53 mutations were associated with HER-2 positive BC and younger age at diagnosis; and CHEK2 and PALB2 mutations were enriched in patients with luminal BC. Among high hereditary risk Chinese BC patients, 23.8% contained germline mutations, including 6.8% in non-BRCA1/2 genes. TP53 and PALB2 had a relatively high mutation rate (1.9 and 1.2%). Although no factors predicted for detrimental mutations in non-BRCA1/2 genes, some clinical features were associated with mutations of several particular genes.
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Affiliation(s)
- Jun-Yan Li
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Ruilin Jing
- Annoroad Gene Technology (Beijing) Co. Ltd, Beijing, 100176, China
| | - Hongyi Wei
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Minghao Wang
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Qi Xiaowei
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Haoxi Liu
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Liu Jian
- Department of Medical Oncology, Fujian Provincial Cancer Hospital, Fuzhou, Fujian, 350014, China
| | - Jiang-Hua Ou
- Department of Breast Surgery, The Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang, 830011, China
| | - Wei-Hua Jiang
- Department of Breast Surgery, The Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang, 830011, China
| | - Fu-Guo Tian
- Department of Breast Surgery, Shanxi Cancer Hospital, Taiyuan, Shanxi, 030013, China
| | - Yuan Sheng
- Department of Thyroid and Breast Surgery, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Heng-Yu Li
- Department of Thyroid and Breast Surgery, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Hong Xu
- Department of Breast Surgery, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning, 110042, China
| | - Rui-Shan Zhang
- Department of Breast Surgery, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning, 110042, China
| | - Ai-Hua Guan
- Department of Breast Surgery, Jilin Cancer Hospital & Institute, Changchun, Jilin, 130000, China
| | - Ke Liu
- Department of Breast Surgery, Jilin Cancer Hospital & Institute, Changchun, Jilin, 130000, China
| | - Hong-Chuan Jiang
- Department of General Surgery, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, 100020, China
| | - Yu Ren
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Jian-Jun He
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Weiwei Huang
- Department of Medical Oncology, Fujian Provincial Cancer Hospital, Fuzhou, Fujian, 350014, China
| | - Ning Liao
- Department of Breast, Cancer Center, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, 510080, China
| | - Xiangjun Cai
- Department of Hepatobiliary and General Surgery, PLA No.202 Hospital, Shenyang Liaoning, 110812, China
| | - Jia Ming
- Department of Breast, Thyroid, and Pancreas Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Rui Ling
- Depatement of Thyroid, Breast and Vascular Surgery, Xijing hospital, Forth Military University, Xi'an, Shaanxi, 710032, China
| | - Yan Xu
- Department of Breast surgery, Daping Hospital, Research Institute of Surgery, Third Military Medical University, Chongqing, 400038, China
| | - Chun-Yan Hu
- Department of Breast surgery, Daping Hospital, Research Institute of Surgery, Third Military Medical University, Chongqing, 400038, China
| | - Jianguo Zhang
- Department of Breast Surgery, the Second Affiliated Hospital of Harbin Medical College, Harbin, Heilongjiang, 150086, China
| | - Baoliang Guo
- Department of Breast Surgery, the Second Affiliated Hospital of Harbin Medical College, Harbin, Heilongjiang, 150086, China
| | - Lizhi Ouyang
- Hunan Cancer Hospital, Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 4100013, China
| | - Ping Shuai
- Health Management Center, Sichuan Provincial People's Hospital, Chengdu, Sichuan, 610072, China
| | - Zhenzhen Liu
- Department of Breast Surgery, Henan Cancer Hospital, Zhengzhou, Henan, 450008, China
| | - Ling Zhong
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Zhen Zeng
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Ting Zhang
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Zhaoling Xuan
- Annoroad Gene Technology (Beijing) Co. Ltd, Beijing, 100176, China
| | - Xuanni Tan
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Junbin Liang
- Annoroad Gene Technology (Beijing) Co. Ltd, Beijing, 100176, China
| | - Qinwen Pan
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Li Chen
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Fan Zhang
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Lin-Jun Fan
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Yi Zhang
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Xinhua Yang
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Jing BoLi
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
| | - Chongjian Chen
- Annoroad Gene Technology (Beijing) Co. Ltd, Beijing, 100176, China
| | - Jun Jiang
- Department of Breast Surgery, Southwest Hospital, the Third Military Medical University, Chongqing, 400038, China
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22
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Fortuno C, James PA, Spurdle AB. Current review of TP53 pathogenic germline variants in breast cancer patients outside Li-Fraumeni syndrome. Hum Mutat 2018; 39:1764-1773. [PMID: 30240537 DOI: 10.1002/humu.23656] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 08/31/2018] [Accepted: 09/19/2018] [Indexed: 12/16/2022]
Abstract
Pathogenic germline variants in TP53 predispose carriers to the multi-cancer Li-Fraumeni syndrome (LFS). Widespread multigene panel testing is identifying TP53 pathogenic variants in breast cancer patients outside the strict clinical criteria recommended for LFS testing. We aimed to assess frequency and clinical implications of TP53 pathogenic variants in breast cancer cohorts ascertained outside LFS. Classification of TP53 germline variants reported in 59 breast cancer studies, and publicly available population control sets was reviewed and identified evidence for misclassification of variants. TP53 pathogenic variant frequency was determined for: breast cancer studies grouped by ascertainment characteristics; breast cancer cohorts undergoing panel testing; and population controls. Early age of breast cancer onset, regardless of family history or BRCA1/BRCA2 previous testing, had the highest pick-up rate for TP53 carriers. Patients at risk of hereditary breast cancer unselected for features of LFS carried TP53 pathogenic variants at a frequency comparable to that of other non-BRCA1/2 breast cancer predisposing genes, and ∼threefold more than reported in population controls. These results have implications for the implementation of TP53 testing in broader clinical settings, and suggest urgent need to investigate cancer risks associated with TP53 pathogenic variants in individuals outside the LFS spectrum.
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Affiliation(s)
- Cristina Fortuno
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, Australia
| | - Paul A James
- Peter MacCallum Cancer Centre and Royal Melbourne Hospital Familial Cancer Centre, Melbourne, Australia
| | - Amanda B Spurdle
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, Australia
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23
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Zhu X, Tian T, Ruan M, Rao J, Yang W, Cai X, Sun M, Qin G, Zhao Z, Wu J, Shao Z, Shui R, Hu Z. Expression of DNA Damage Response Proteins and Associations with Clinicopathologic Characteristics in Chinese Familial Breast Cancer Patients with BRCA1/2 Mutations. J Breast Cancer 2018; 21:297-305. [PMID: 30275858 PMCID: PMC6158157 DOI: 10.4048/jbc.2018.21.e38] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 08/14/2018] [Indexed: 01/22/2023] Open
Abstract
Purpose The characteristic expression of DNA damage response proteins in familial breast cancers with BRCA1, BRCA2, or non-BRCA1/2 mutations has not been analyzed in Chinese patients. Our study aimed to assess the differential expression of microcephalin 1 (BRIT1), ATM serine/threonine kinase (ATM), checkpoint kinase 2 (CHEK2), BRCA1, RAD51 recombinase (RAD51), and poly (ADP-ribose) polymerase 1 (PARP-1) and establish the profile of Chinese familial breast cancers with different mutation status. Methods We constructed five tissue microarrays from 183 familial breast cancer patients (31 with BRCA1 mutations; 14 with BRCA2 mutations, and 138 with non-BRCA1/2 mutations). The DNA response and repair markers used for immunohistochemistry analysis included BRIT1, ATM, CHEK2, BRCA1, RAD51, and PARP-1. The expressions of these proteins were analyzed in BRCA1/2 mutated tumors. The association between pathologic characteristics with BRCA1/2 mutation status was also analyzed. Results In familial breast cancer patients, BRCA1 mutated tumors were more frequent with high nuclear grade, estrogen receptor/progesterone receptor/human epidermal growth factor receptor 2 negative, low Ki-67, and positive CK5/6. BRCA1 mutated tumors had lower CHEK2 and higher cytoplasmic BRIT1 expression than BRCA2 and non-BRCA1/2 mutation tumors. BRCA2-associated tumors showed higher CHEK2 and cytoplasmic RAD51 expression than those in other groups. Nuclear PARP-1 expression in BRCA1/2-associated tumors was significantly higher than in non-BRCA1/2 mutation tumors. Moreover, we found quite a few of negative PARP-1 expression cases in BRCA1/2 mutated groups. Conclusion The clinicopathologic findings of BRCA1-associated Chinese familial breast cancers were similar to the results of other studies. Chinese familial breast cancer patients with BRCA1/2 mutations might have distinctive expression of different DNA damage response proteins. The reduced expression of PARP-1 in Chinese BRCA1/2 mutated breast cancer patients could influence the therapeutic outcome of PARP-1 inhibitors.
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Affiliation(s)
- Xinyi Zhu
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Tian Tian
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Miao Ruan
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Jia Rao
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Wentao Yang
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Xu Cai
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Menghong Sun
- Department of Tissue Bank, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Guangqi Qin
- Department of Tissue Bank, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Zhonghua Zhao
- Department of Pathology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jiong Wu
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Zhimin Shao
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Ruohong Shui
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Zhen Hu
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
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24
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Abstract
Lynch Syndrome (LS) is the most common dominantly inherited colorectal cancer (CRC) predisposition and is caused by a heterozygous germline defect in one of the DNA mismatch repair (MMR) genes MLH1, MSH2, MSH6, or PMS2. High microsatellite instability (MSI-H) and loss of MMR protein expression in tumours reflecting a defective MMR are indicators for LS, as well as a positive family history of early onset CRC. MSH2 and MSH6 form a major functional heterodimer, and MSH3 is an alternative binding partner for MSH2. So far, the role of germline MSH3 variants remains unclear, as to our knowledge heterozygous truncating variants are not regarded causative for LS, but were detected in patients with CRC, and recently biallelic MSH3 defects have been identified in two patients with adenomatous polyposis. By gene screening we investigated the role of MSH3 in 11 LS patients with truncating MSH6 germline variants and an unexplained MSH2 protein loss in their corresponding MSI-H tumours. We report the first two LS patients harbouring heterozygous germline variants c.1035del and c.2732T>G in MSH3 coincidentally with truncating variants in MSH6. In the patient with truncating germline variants in MSH3 and MSH6, two additional somatic second hits in both genes abrogate all binding partners for the MSH2 protein which might subsequently be degraded. The clinical relevance of MSH3 germline variants is currently under re-evaluation, and heterozygous MSH3 defects alone do not seem to induce a LS phenotype, but might aggravate the MSH6 phenotype in affected family members.
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25
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Genetics of breast cancer in African populations: a literature review. GLOBAL HEALTH EPIDEMIOLOGY AND GENOMICS 2018; 3:e8. [PMID: 30263132 PMCID: PMC6152487 DOI: 10.1017/gheg.2018.8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 03/19/2018] [Accepted: 03/19/2018] [Indexed: 12/25/2022]
Abstract
Breast cancer (BC) is one of the most complex, diverse and leading cause of death in women worldwide. The present investigation aims to explore genes panel associated with BC in different African regions, and compare them to those studied worldwide. We extracted relevant information from 43 studies performed in Africa using the following criteria: case-control study, association between genetic variations and BC risk. Data were provided on mutations and polymorphisms associated with BC without fixing a specific date. Case-only studies and clinical trials were excluded. Our study revealed that the majority of African BC genetic studies remain restricted to the investigation of BRCA1 and BRCA2 genes and differences in their mutations spectrum. Therefore, it is necessary to encourage African researchers to characterize more genes involved in BC using methods generating global information such as next-generation sequencing in order to guide specific and more effective therapeutic strategies for the African community.
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26
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Wei H, Wang M, Ou J, Jiang W, Tian F, Sheng Y, Li H, Xu H, Zhang R, Guan A, Wang C, Jiang H, Ren Y, He J, Liu J, Huang W, Liao N, Cai X, Ming J, Ling R, Xu Y, Hu C, Zhang J, Guo B, Ouyang L, Shuai P, Liu Z, Zhong L, Jing R, Zeng Z, Zhang M, Zhang T, Xuan Z, Tan X, Liang J, Pan Q, Chen L, Zhang F, Fan L, Zhang Y, Yang X, Li J, Chen C, Jiang J. Multicenter cross-sectional screening of the BRCA gene for Chinese high hereditary risk breast cancer populations. Oncol Lett 2018; 15:9420-9428. [PMID: 29805665 DOI: 10.3892/ol.2018.8538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 10/25/2017] [Indexed: 11/06/2022] Open
Abstract
Due to lack of systematic reviews, BRCA, DNA Repair Associated (BRCA) mutations in the Chinese population are not completely understood. The following study investigates the prevalence and type of BRCA mutations in Chinese patients with high hereditary risk of breast cancer (BC). Patients Drwere recruited from 14 cities between October 2015 and February 2016, and were selected based on family and personal medical history. BRCA mutations were analyzed by collecting blood samples from all participants. 437 BC patients were included. A total of seventy-six (17.4%) mutation carriers were identified with no geographic difference. The mutation rate in the early-onset BC patients was lower compared to family history of breast/ovarian cancer (OC), bilateral BC, male BC, BC&OC or meeting ≥2 criteria (9.2 vs. 21.7, 24.0, 22.2, 16.7 and 24.3%, respectively, P=0.007). A total of 61 mutation sites were identified (BRCA1 32, BRCA2 29) including 47.5% novel sites and extra 10 variants of uncertain significance. A total of five sites were repeated in more than one unrelated patient. A total of 11 sites were associated with hereditary breast and ovarian cancer syndrome, two of which were confirmed by family pedigrees. Compared with BRCA- patients, patients with BRCA1 mutation tended to be triple-negative BC (P<0.001), whereas patients with BRCA2 mutation were more likely to be hormone receptor positive BC (P=0.02). The present study provides a general BRCA mutation profile in the Chinese population. The prevalence of BRCA mutation in BC patients with high hereditary risk is lower compared with Western populations. Chinese mutation type is different with Western people, without obvious founder mutation.
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Affiliation(s)
- Hongyi Wei
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
| | - Minghao Wang
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
| | - Jianghua Ou
- Department of Breast Surgery, The Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
| | - Weihua Jiang
- Department of Breast Surgery, The Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
| | - Fuguo Tian
- Breast Surgery, Shanxi Cancer Hospital, Taiyuan, Shanxi 030013, P.R. China
| | - Yuan Sheng
- Department of Thyroid and Breast Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
| | - Hengyu Li
- Department of Thyroid and Breast Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
| | - Hong Xu
- Department of Breast Surgery, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning 110042, P.R. China
| | - Ruishan Zhang
- Department of Breast Surgery, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning 110042, P.R. China
| | - Aihua Guan
- Department of Breast Surgery, Jilin Cancer Hospital and Institute, Changchun, Jilin 130000, P.R. China
| | - Changqing Wang
- Department of Breast Surgery, Jilin Cancer Hospital and Institute, Changchun, Jilin 130000, P.R. China
| | - Hongchuan Jiang
- Department of General Surgery, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing 100020, P.R. China
| | - Yu Ren
- Department of Breast Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jianjun He
- Department of Breast Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jian Liu
- Department of Medical Oncology, Fujian Provincial Cancer Hospital, Fuzhou, Fujian 350014, P.R. China
| | - Weiwei Huang
- Department of Medical Oncology, Fujian Provincial Cancer Hospital, Fuzhou, Fujian 350014, P.R. China
| | - Ning Liao
- Breast Department, Cancer Center, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, P.R. China
| | - Xiangjun Cai
- Department of Hepatobiliary and General Surgery, PLA No. 202 Hospital, Shenyang, Liaoning 110812, P.R. China
| | - Jia Ming
- Department of Breast, Thyroid, and Pancreas Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Rui Ling
- Depatement of Thyroid, Breast and Vascular Surgery, Xijing Hospital, Forth Military University, Xi'an, Shaanxi 710032, P.R. China
| | - Yan Xu
- Department of Breast Surgery, Daping Hospital, Research Institute of Surgery, Third Military Medical University, Chongqing 400038, P.R. China
| | - Chunyan Hu
- Department of Breast Surgery, Daping Hospital, Research Institute of Surgery, Third Military Medical University, Chongqing 400038, P.R. China
| | - Jianguo Zhang
- Department of Breast Surgery, The Second Affiliated Hospital of Harbin Medical College, Harbin, Heilongjiang 150086, P.R. China
| | - Baoliang Guo
- Department of Breast Surgery, The Second Affiliated Hospital of Harbin Medical College, Harbin, Heilongjiang 150086, P.R. China
| | - Lizhi Ouyang
- Department of Breast Surgery, Hunan Cancer Hospital, Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan 4100013, P.R. China
| | - Ping Shuai
- Health Management Center, Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Zhenzhen Liu
- Department of Breast Surgery, Henan Cancer Hospital, Zhengzhou, Henan 450008, P.R. China
| | - Ling Zhong
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
| | - Ruilin Jing
- Annoroad Gene Technology (Beijing) Co., Ltd., Beijing 100176, P.R. China
| | - Zhen Zeng
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
| | - Meng Zhang
- Annoroad Gene Technology (Beijing) Co., Ltd., Beijing 100176, P.R. China
| | - Ting Zhang
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
| | - Zhaoling Xuan
- Annoroad Gene Technology (Beijing) Co., Ltd., Beijing 100176, P.R. China
| | - Xuanni Tan
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
| | - Junbin Liang
- Annoroad Gene Technology (Beijing) Co., Ltd., Beijing 100176, P.R. China
| | - Qinwen Pan
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
| | - Li Chen
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
| | - Fan Zhang
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
| | - Linjun Fan
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
| | - Yi Zhang
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
| | - Xinhua Yang
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
| | - Jingbo Li
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
| | - Chongjian Chen
- Annoroad Gene Technology (Beijing) Co., Ltd., Beijing 100176, P.R. China
| | - Jun Jiang
- Department of Breast Surgery, Southwest Hospital, The Third Military Medical University, Chongqing 400038, P.R. China
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Wang, DC, Wang, W, Zhu, B, Wang X. Lung Cancer Heterogeneity and New Strategies for Drug Therapy. Annu Rev Pharmacol Toxicol 2018; 58:531-546. [PMID: 28977762 DOI: 10.1146/annurev-pharmtox-010716-104523] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Diane C. Wang,
- Zhongshan Hospital Institute of Clinical Science, Shanghai Institute of Clinical Bioinformatics, Fudan University Center for Clinical Bioinformatics, Shanghai 200032, China
| | - William Wang,
- Zhongshan Hospital Institute of Clinical Science, Shanghai Institute of Clinical Bioinformatics, Fudan University Center for Clinical Bioinformatics, Shanghai 200032, China
| | - Bijun Zhu,
- Zhongshan Hospital Institute of Clinical Science, Shanghai Institute of Clinical Bioinformatics, Fudan University Center for Clinical Bioinformatics, Shanghai 200032, China
| | - Xiangdong Wang
- Zhongshan Hospital Institute of Clinical Science, Shanghai Institute of Clinical Bioinformatics, Fudan University Center for Clinical Bioinformatics, Shanghai 200032, China
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28
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Surowy H, Varga D, Burwinkel B, Marmé F, Sohn C, Luedeke M, Rinckleb A, Maier C, Deissler H, Volcic M, Wiesmüller L, Hasenburg A, Klar M, Hoegel J, Vogel W. A low-frequency haplotype spanning SLX4/FANCP constitutes a new risk locus for early-onset breast cancer (<60 years) and is associated with reduced DNA repair capacity. Int J Cancer 2017; 142:757-768. [PMID: 29044504 DOI: 10.1002/ijc.31105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 08/31/2017] [Accepted: 09/25/2017] [Indexed: 01/21/2023]
Abstract
Only a fraction of breast cancer (BC) cases can be yet explained by mutations in genes or genomic variants discovered in linkage, genome-wide association and sequencing studies. The known genes entailing medium or high risk for BC are strongly enriched for a function in DNA double strand repair. Thus, aiming at identifying low frequency variants conferring an intermediate risk, we here investigated 17 variants (MAF: 0.01-0.1) in 10 candidate genes involved in DNA repair or cell cycle control. In an exploration cohort of 437 cases and 1189 controls, we show the variant rs3810813 in the SLX4/FANCP gene to be significantly associated with both BC (≤60 years; OR = 2.6(1.6-3.9), p = 1.6E-05) and decreased DNA repair capacity (≤60 years; beta = 37.8(17.9-57.8), p = 5.3E-4). BC association was confirmed in a verification cohort (N = 2441). Both associations were absent from cases diagnosed >60 years and stronger the earlier the diagnosis. By imputation we show that rs3810813 tags a haplotype with 5 additional variants with the same allele frequency (R2 > 0.9), and a pattern of association very similar for both phenotypes (cases <60 years, p < 0.001, the Bonferroni threshold derived from unlinked variants in the region). In young cases (≤60 years) carrying the risk haplotype, micronucleus test results are predictive for BC (AUC > 0.9). Our findings propose a risk variant with high penetrance on the haplotype spanning SLX4/FANCP to be functionally associated to BC predisposition via decreased repair capacity and suggest this variant is carried by a fraction of these haplotypes that is enriched in early onset BC cases.
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Affiliation(s)
- Harald Surowy
- Institute of Human Genetics, University of Ulm, Albert-Einstein-Allee 11, Ulm, D-89081, Germany.,Division of Molecular Biology of Breast Cancer, Department of Obstetrics and Gynecology, University of Heidelberg, Im Neuenheimer Feld 440, Heidelberg, D-69120, Germany.,Molecular Epidemiology, C080, German Cancer Research Center, Im Neuenheimer Feld 581, Heidelberg, D-69120, Germany.,Harald Surowy's current address is: Institute of Human Genetics, University of Duesseldorf, Universitaetsstr. 1, Duesseldorf, 40225, Germany
| | - Dominic Varga
- Department of Obstetrics and Gynecology, Ulm University, Prittwitzstr. 43, Ulm, D-89075, Germany.,Dominic Varga's current address is: Department of Gynecology, Donauklinik, Krankenhausstr 11, Neu-Ulm, 89231, Germany
| | - Barbara Burwinkel
- Division of Molecular Biology of Breast Cancer, Department of Obstetrics and Gynecology, University of Heidelberg, Im Neuenheimer Feld 440, Heidelberg, D-69120, Germany.,Molecular Epidemiology, C080, German Cancer Research Center, Im Neuenheimer Feld 581, Heidelberg, D-69120, Germany
| | - Frederik Marmé
- Division of Molecular Biology of Breast Cancer, Department of Obstetrics and Gynecology, University of Heidelberg, Im Neuenheimer Feld 440, Heidelberg, D-69120, Germany.,National Centre for Tumor Diseases, Heidelberg, D-69120, Germany
| | - Christof Sohn
- Division of Molecular Biology of Breast Cancer, Department of Obstetrics and Gynecology, University of Heidelberg, Im Neuenheimer Feld 440, Heidelberg, D-69120, Germany
| | - Manuel Luedeke
- Institute of Human Genetics, University of Ulm, Albert-Einstein-Allee 11, Ulm, D-89081, Germany
| | - Antje Rinckleb
- Institute of Human Genetics, University of Ulm, Albert-Einstein-Allee 11, Ulm, D-89081, Germany
| | - Christiane Maier
- Institute of Human Genetics, University of Ulm, Albert-Einstein-Allee 11, Ulm, D-89081, Germany
| | - Helmut Deissler
- Department of Obstetrics and Gynecology, Ulm University, Prittwitzstr. 43, Ulm, D-89075, Germany.,Helmut Deissler's current address is: HD/U Biomedical Services, Im Wiblinger Hart 62, Ulm, 89079, Germany
| | - Meta Volcic
- Department of Obstetrics and Gynecology, Ulm University, Prittwitzstr. 43, Ulm, D-89075, Germany
| | - Lisa Wiesmüller
- Department of Obstetrics and Gynecology, Ulm University, Prittwitzstr. 43, Ulm, D-89075, Germany
| | - Annette Hasenburg
- Department of Obstetrics and Gynecology, University of Freiburg, Hugstetter Straße 55, Freiburg, D-79106, Germany.,Annete Hasenburg's current address is: Klinik und Poliklinik für Geburtshilfe und Frauengesundheit, University of Mainz, Langenbeckstr. 1, Mainz, 55131, Germany
| | - Maximilian Klar
- Department of Obstetrics and Gynecology, University of Freiburg, Hugstetter Straße 55, Freiburg, D-79106, Germany
| | - Josef Hoegel
- Institute of Human Genetics, University of Ulm, Albert-Einstein-Allee 11, Ulm, D-89081, Germany
| | - Walther Vogel
- Institute of Human Genetics, University of Ulm, Albert-Einstein-Allee 11, Ulm, D-89081, Germany
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Lin X, Chen Z, Gao P, Gao Z, Chen H, Qi J, Liu F, Ye D, Jiang H, Na R, Yu H, Shi R, Lu D, Zheng SL, Mo Z, Sun Y, Ding Q, Xu J. TEX15: A DNA repair gene associated with prostate cancer risk in Han Chinese. Prostate 2017; 77:1271-1278. [PMID: 28730685 DOI: 10.1002/pros.23387] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 06/22/2017] [Indexed: 11/12/2022]
Abstract
BACKGROUND Both common and rare genetic variants may contribute to risk of developing prostate cancer. Genome-wide association studies (GWASs) have identified ∼100 independent, common variants associated with prostate cancer risk. However, little is known about the association of rare variants (minor allele frequency [MAF] <1%) in the genome with prostate cancer risk. METHODS A two-stage study was used to test the association of rare, deleterious coding variants, annotated using predictive algorithms, with prostate cancer risk in Chinese men. Predicted rare, deleterious coding variants in the Illumina HumanExome-12 v1.1 beadchip were first evaluated in 1343 prostate cancer patients and 1008 controls. Significant variants were then validated in an additional 1816 prostate cancer patients and 1549 controls. RESULTS In the discovery stage, 14 predicted rare, deleterious coding variants were significantly associated with prostate cancer risk (P < 0.01). In the confirmation stage, Q1631H in TEX15 (rs142485241), a DNA repair gene, was significantly associated with prostate cancer risk (P = 0.0069). The estimated odds ratio (OR) of the variant in the combined analysis was 3.24 (95% Confidence Interval 1.85-6.06), P = 8.81 × 10-5 . Additionally, rs28756990 (V741F) at MLH3 (P = 0.06) and rs2961144 (I126V) at OR2A5 (P = 0.065) were marginally associated with prostate cancer risk in the replication stage. CONCLUSIONS Our study provided preliminary evidence that the rare variant Q1631H in DNA repair gene TEX15 is associated with prostate cancer risk. This finding complements known common prostate cancer risk-associated variants and suggests the possible role of DNA repair genes in prostate cancer development.
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Affiliation(s)
- Xiaoling Lin
- Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China
| | - Zhongzhong Chen
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China
| | - Peng Gao
- Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Zhimei Gao
- Central Laboratory, Shanghai Children's Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Haitao Chen
- Center for Genomic Translational Medicine and Prevention, School of Public Health, Fudan University, Shanghai, China
| | - Jun Qi
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Fang Liu
- Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Dingwei Ye
- Department of Urology, Fudan University Shanghai Cancer Center and Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Haowen Jiang
- Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Rong Na
- Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Hongjie Yu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China
| | - Rong Shi
- School of Public Health, Shanghai Jiaotong University, Shanghai, China
| | - Daru Lu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China
| | - Siqun Lilly Zheng
- Program for Personalized Cancer Care, NorthShore University HealthSystem, Evanston, Illinois
| | - Zengnan Mo
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China
- Department of Urology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Yinghao Sun
- Department of Urology, Shanghai Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - Qiang Ding
- Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jianfeng Xu
- Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China
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30
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Lang GT, Shi JX, Hu X, Zhang CH, Shan L, Song CG, Zhuang ZG, Cao AY, Ling H, Yu KD, Li S, Sun MH, Zhou XY, Huang W, Shao ZM. The spectrum of BRCA mutations and characteristics of BRCA-associated breast cancers in China: Screening of 2,991 patients and 1,043 controls by next-generation sequencing. Int J Cancer 2017; 141:129-142. [PMID: 28294317 DOI: 10.1002/ijc.30692] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 02/17/2017] [Accepted: 03/02/2017] [Indexed: 01/17/2023]
Abstract
To characterize the prevalence of BRCA mutations and characteristics of BRCA carriers in China and to update the clinical recommendations for BRCA testing, we conducted a wide screen for BRCA mutations using next-generation sequencing (NGS). A total of 4,034 Chinese subjects were screened for germline BRCA1/2 mutations, including 2,991 breast cancer patients and 1,043 healthy individuals from the community enrolled as controls. We developed an NGS-based approach to perform BRCA1/2 screening. BRCA mutations were identified in 9.1% (232/2,560) of cases with at least one risk factor, in 3.5% (15/431) of sporadic patients and in 0.38% (4/1,043) of healthy controls. The mutation frequency ranged from 8.9 to 15.2% in cohorts with a single risk factor to 16.6-100% in groups with multiple risk factors. We identified 70 novel BRCA mutations. A high frequency of BRCA1 c.5470_5477del was detected, accounting for 13.9% (16/115) of the BRCA1 mutations detected in our study. Clinical characteristics such as family history, invasive carcinoma, negative human epidermal growth factor receptor 2 (HER2), high Ki67 index, lymph node status, and high tumour grade were closely related to BRCA mutations. BRCA2 carriers had poorer disease-free survival among HER2- or hormone receptor-positive patients (hazard ratio = 1.892; 95% confidence interval: 1.132-3.161; p = 0.013). This study shows that BRCA mutation carriers could be frequently identified among breast cancer patients with multiple risk factors. Importantly, we established an NGS-based pipeline for BRCA1/2 testing in clinical practice and strongly suggest that breast cancer patients of premier- and moderate-grade risks receive BRCA1/2 mutations testing in China.
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Affiliation(s)
- Guan-Tian Lang
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
| | - Jin-Xiu Shi
- Department of Genetics, Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center and Shanghai Industrial Technology Institute (SITI), Shanghai, People's Republic of China
| | - Xin Hu
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Chen-Hui Zhang
- Department of Genetics, Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center and Shanghai Industrial Technology Institute (SITI), Shanghai, People's Republic of China
| | - Ling Shan
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Chuan-Gui Song
- Department of Breast Surgery, Affiliated Union Hospital, Fujian Medical University, Fuzhou, People's Republic of China
| | - Zhi-Gang Zhuang
- Department of Breast Surgery, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - A-Yong Cao
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
| | - Hong Ling
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
| | - Ke-Da Yu
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
| | - Shan Li
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
| | - Meng-Hong Sun
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Xiao-Yan Zhou
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Wei Huang
- Department of Genetics, Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center and Shanghai Industrial Technology Institute (SITI), Shanghai, People's Republic of China
| | - Zhi-Ming Shao
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
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31
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Prevalence and spectrum of BRCA germline variants in mainland Chinese familial breast and ovarian cancer patients. Oncotarget 2017; 7:9600-12. [PMID: 26848529 PMCID: PMC4891063 DOI: 10.18632/oncotarget.7144] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 01/18/2016] [Indexed: 11/25/2022] Open
Abstract
Germline mutations in BRCA1 and BRCA2 are the most penetrating genetic predispositions for breast and ovarian cancer, and their presence is largely ethnic-specific. Comprehensive information about the prevalence and spectrum of BRCA mutations has been collected in European and North American populations. However, similar information is lacking in other populations, including the mainland Chinese population despite its large size of 1.4 billion accounting for one fifth of the world's population. Herein, we performed an extensive literature analysis to collect BRCA variants identified from mainland Chinese familial breast and ovarian cancer patients. We observed 137 distinct BRCA1 variants in 409 of 3,844 and 80 distinct BRCA2 variants in 157 of 3,024 mainland Chinese patients, with an estimated prevalence of 10.6% for BRCA1 and 5.2% for BRCA2. Of these variants, only 40.3% in BRCA1 and 42.5% in BRCA2 are listed in current Breast Cancer Information Core database. We observed higher frequent variation in BRCA1 exons 11A, 11C, 11D, and 24 and BRCA2 exon 10 in Chinese patients than in the patients of other populations. The most common pathogenic variant in BRCA1 wasc.981_982delAT in exon 11A, and in BRCA2 c.3195_3198delTAAT in exon 11B and c.5576_5579delTTAA in exon 11E; the most common novel variant in BRCA1 was c.919A>G in exon 10A, and in BRCA2 c.7142delC in exon 14. None of the variants overlap with the founder mutations in other populations. Our analysis indicates that the prevalence of BRCA variation in mainland Chinese familial breast and ovarian cancer patients is at a level similar to but the spectrum is substantially different from the ones of other populations.
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Adam R, Spier I, Zhao B, Kloth M, Marquez J, Hinrichsen I, Kirfel J, Tafazzoli A, Horpaopan S, Uhlhaas S, Stienen D, Friedrichs N, Altmüller J, Laner A, Holzapfel S, Peters S, Kayser K, Thiele H, Holinski-Feder E, Marra G, Kristiansen G, Nöthen MM, Büttner R, Möslein G, Betz RC, Brieger A, Lifton RP, Aretz S. Exome Sequencing Identifies Biallelic MSH3 Germline Mutations as a Recessive Subtype of Colorectal Adenomatous Polyposis. Am J Hum Genet 2016; 99:337-51. [PMID: 27476653 DOI: 10.1016/j.ajhg.2016.06.015] [Citation(s) in RCA: 161] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 06/14/2016] [Indexed: 12/20/2022] Open
Abstract
In ∼30% of families affected by colorectal adenomatous polyposis, no germline mutations have been identified in the previously implicated genes APC, MUTYH, POLE, POLD1, and NTHL1, although a hereditary etiology is likely. To uncover further genes with high-penetrance causative mutations, we performed exome sequencing of leukocyte DNA from 102 unrelated individuals with unexplained adenomatous polyposis. We identified two unrelated individuals with differing compound-heterozygous loss-of-function (LoF) germline mutations in the mismatch-repair gene MSH3. The impact of the MSH3 mutations (c.1148delA, c.2319-1G>A, c.2760delC, and c.3001-2A>C) was indicated at the RNA and protein levels. Analysis of the diseased individuals' tumor tissue demonstrated high microsatellite instability of di- and tetranucleotides (EMAST), and immunohistochemical staining illustrated a complete loss of nuclear MSH3 in normal and tumor tissue, confirming the LoF effect and causal relevance of the mutations. The pedigrees, genotypes, and frequency of MSH3 mutations in the general population are consistent with an autosomal-recessive mode of inheritance. Both index persons have an affected sibling carrying the same mutations. The tumor spectrum in these four persons comprised colorectal and duodenal adenomas, colorectal cancer, gastric cancer, and an early-onset astrocytoma. Additionally, we detected one unrelated individual with biallelic PMS2 germline mutations, representing constitutional mismatch-repair deficiency. Potentially causative variants in 14 more candidate genes identified in 26 other individuals require further workup. In the present study, we identified biallelic germline MSH3 mutations in individuals with a suspected hereditary tumor syndrome. Our data suggest that MSH3 mutations represent an additional recessive subtype of colorectal adenomatous polyposis.
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Affiliation(s)
- Ronja Adam
- Institute of Human Genetics, University of Bonn, 53127 Bonn, Germany; Center for Hereditary Tumor Syndromes, University of Bonn, 53127 Bonn, Germany
| | - Isabel Spier
- Institute of Human Genetics, University of Bonn, 53127 Bonn, Germany; Center for Hereditary Tumor Syndromes, University of Bonn, 53127 Bonn, Germany
| | - Bixiao Zhao
- Department of Genetics, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06520-8005, USA
| | - Michael Kloth
- Institute of Pathology, University of Cologne, 50937 Cologne, Germany
| | - Jonathan Marquez
- Department of Genetics, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06520-8005, USA
| | - Inga Hinrichsen
- Medical Clinic 1, Biomedical Research Laboratory, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Jutta Kirfel
- Institute of Pathology, University of Bonn, 53127 Bonn, Germany
| | - Aylar Tafazzoli
- Institute of Human Genetics, University of Bonn, 53127 Bonn, Germany; Department of Genomics, Life & Brain Center, University of Bonn, 53127 Bonn, Germany
| | - Sukanya Horpaopan
- Institute of Human Genetics, University of Bonn, 53127 Bonn, Germany; Department of Anatomy, Faculty of Medical Science, Naresuan University, Phitsanulok, Chiang Mai 50200, Thailand
| | - Siegfried Uhlhaas
- Institute of Human Genetics, University of Bonn, 53127 Bonn, Germany
| | - Dietlinde Stienen
- Institute of Human Genetics, University of Bonn, 53127 Bonn, Germany
| | | | - Janine Altmüller
- Cologne Center for Genomics, University of Cologne, 50937 Cologne, Germany; Institute of Human Genetics, University of Cologne, 50937 Cologne, Germany
| | - Andreas Laner
- Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-University, 80336 Munich, Germany; Medical Genetics Center, 80335 Munich, Germany
| | - Stefanie Holzapfel
- Institute of Human Genetics, University of Bonn, 53127 Bonn, Germany; Center for Hereditary Tumor Syndromes, University of Bonn, 53127 Bonn, Germany
| | - Sophia Peters
- Institute of Human Genetics, University of Bonn, 53127 Bonn, Germany
| | - Katrin Kayser
- Institute of Human Genetics, University of Bonn, 53127 Bonn, Germany
| | - Holger Thiele
- Cologne Center for Genomics, University of Cologne, 50937 Cologne, Germany
| | - Elke Holinski-Feder
- Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-University, 80336 Munich, Germany; Medical Genetics Center, 80335 Munich, Germany
| | - Giancarlo Marra
- Institute of Molecular Cancer Research, University of Zurich, CH-8057 Zurich, Switzerland
| | | | - Markus M Nöthen
- Institute of Human Genetics, University of Bonn, 53127 Bonn, Germany; Department of Genomics, Life & Brain Center, University of Bonn, 53127 Bonn, Germany
| | - Reinhard Büttner
- Institute of Pathology, University of Cologne, 50937 Cologne, Germany
| | - Gabriela Möslein
- HELIOS Klinikum Wuppertal, University of Witten/Herdecke, 42283 Wuppertal, Germany
| | - Regina C Betz
- Institute of Human Genetics, University of Bonn, 53127 Bonn, Germany; Department of Genomics, Life & Brain Center, University of Bonn, 53127 Bonn, Germany
| | - Angela Brieger
- Medical Clinic 1, Biomedical Research Laboratory, Goethe-University Frankfurt, 60590 Frankfurt, Germany
| | - Richard P Lifton
- Department of Genetics, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06520-8005, USA
| | - Stefan Aretz
- Institute of Human Genetics, University of Bonn, 53127 Bonn, Germany; Center for Hereditary Tumor Syndromes, University of Bonn, 53127 Bonn, Germany.
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Qiu J, Guan J, Yang X, Wu J, Liu G, Di G, Chen C, Hou Y, Han Q, Shen Z, Shao Z, Hu Z. Quality of Life and Psychological State in Chinese Breast Cancer Patients Who Received BRCA1/2 Genetic Testing. PLoS One 2016; 11:e0158531. [PMID: 27428375 PMCID: PMC4948873 DOI: 10.1371/journal.pone.0158531] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 06/17/2016] [Indexed: 11/19/2022] Open
Abstract
Background This study aims to understand the quality of life (QOL) and psychological state (PS) of Chinese breast cancer patients who received BRCA1/2 genetic testing; to examine the psychological changes between BRCA1/2 mutation carriers and non-carriers; and to further explore the psychological experience of BRCA1/2 mutation carriers. Methods This study was combined with quantitative and qualitative designs. First, we performed a quantitative investigation using FACT-B (Chinese version) and Irritability, Depression and Anxiety scale (IDA) to assess the QOL and PS in breast cancer patients who received BRCA1/2 genetic testing. Then semi-structured in-depth qualitative interviews among 13 mutation carriers were conducted in hospital. Results Results from the quantitative study showed QOL scores were relatively high and the IDA scores were relatively low among the patients, and there was no significant difference in the QOL or IDA scores between non-carriers and carriers. Based on the qualitative analysis, four main themes emerged: (1) Finding the reason for having breast cancer; (2) Negative emotions; (3) Behavioral changes; (4) Lack of information. Conclusions The present study showed that QOL and PS are good among the breast cancer patients who received genetic testing. Genetic testing itself does not cause long psychosocial effects. BRCA1/2 mutation carriers may have certain negative emotions at the first stage they knew the testing results and may initiate behavioral and lifestyle changes. The patients with a BRCA1/2 mutation desire knowledge with regard to genetic aspects in mainland China. Professional information and advice can be provided to relieve the patients’ negative emotions when they were informed of gene defect.
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Affiliation(s)
- Jiajia Qiu
- Department of Nursing Administration, Shanghai Cancer Center, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jiaqin Guan
- Department of Nursing Administration, Shanghai Cancer Center, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiaochen Yang
- Department of Breast Surgery, Shanghai Cancer Center, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jiong Wu
- Department of Breast Surgery, Shanghai Cancer Center, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Guangyu Liu
- Department of Breast Surgery, Shanghai Cancer Center, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Genhong Di
- Department of Breast Surgery, Shanghai Cancer Center, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Canming Chen
- Department of Breast Surgery, Shanghai Cancer Center, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yifeng Hou
- Department of Breast Surgery, Shanghai Cancer Center, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Qixia Han
- Department of Breast Surgery, Shanghai Cancer Center, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhenzhou Shen
- Department of Breast Surgery, Shanghai Cancer Center, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhimin Shao
- Department of Breast Surgery, Shanghai Cancer Center, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhen Hu
- Department of Breast Surgery, Shanghai Cancer Center, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- * E-mail:
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El-Husny A, Raiol-Moraes M, Amador M, Ribeiro-Dos-Santos AM, Montagnini A, Barbosa S, Silva A, Assumpção P, Ishak G, Santos S, Pinto P, Cruz A, Ribeiro-Dos-Santos Â. CDH1 mutations in gastric cancer patients from northern Brazil identified by Next- Generation Sequencing (NGS). Genet Mol Biol 2016; 39:189-98. [PMID: 27192129 PMCID: PMC4910547 DOI: 10.1590/1678-4685-gmb-2014-0342] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 07/23/2015] [Indexed: 12/20/2022] Open
Abstract
Gastric cancer is considered to be the fifth highest incident tumor worldwide and the third leading cause of cancer deaths. Developing regions report a higher number of sporadic cases, but there are only a few local studies related to hereditary cases of gastric cancer in Brazil to confirm this fact. CDH1 germline mutations have been described both in familial and sporadic cases, but there is only one recent molecular description of individuals from Brazil. In this study we performed Next Generation Sequencing (NGS) to assess CDH1 germline mutations in individuals who match the clinical criteria for Hereditary Diffuse Gastric Cancer (HDGC), or who exhibit very early diagnosis of gastric cancer. Among five probands we detected CDH1 germline mutations in two cases (40%). The mutation c.1023T > G was found in a HDGC family and the mutation c.1849G > A, which is nearly exclusive to African populations, was found in an early-onset case of gastric adenocarcinoma. The mutations described highlight the existence of gastric cancer cases caused by CDH1 germline mutations in northern Brazil, although such information is frequently ignored due to the existence of a large number of environmental factors locally. Our report represent the first CDH1 mutations in HDGC described from Brazil by an NGS platform.
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Affiliation(s)
- Antonette El-Husny
- Laboratório de Genética Humana e Médica (LGHM), Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Rede de Pesquisa em Genômica Populacional Humana, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | - Milene Raiol-Moraes
- Laboratório de Genética Humana e Médica (LGHM), Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Rede de Pesquisa em Genômica Populacional Humana, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | - Marcos Amador
- Laboratório de Genética Humana e Médica (LGHM), Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Rede de Pesquisa em Genômica Populacional Humana, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | - André M Ribeiro-Dos-Santos
- Laboratório de Genética Humana e Médica (LGHM), Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Rede de Pesquisa em Genômica Populacional Humana, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | - André Montagnini
- Instituto Sírio-Libanês de Ensino e Pesquisa, Hospital Sírio-Libanês, São Paulo, SP, Brazil
| | - Silvanira Barbosa
- Laboratório de Polimorfismo de DNA - Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | - Artur Silva
- Rede de Pesquisa em Genômica Populacional Humana, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Laboratório de Polimorfismo de DNA - Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | - Paulo Assumpção
- Rede de Pesquisa em Genômica Populacional Humana, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Núcleo de Pesquisas em Oncologia, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | - Geraldo Ishak
- Rede de Pesquisa em Genômica Populacional Humana, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Núcleo de Pesquisas em Oncologia, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Hospital Universitário João de Barros Barreto, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | - Sidney Santos
- Laboratório de Genética Humana e Médica (LGHM), Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Rede de Pesquisa em Genômica Populacional Humana, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Núcleo de Pesquisas em Oncologia, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | - Pablo Pinto
- Laboratório de Genética Humana e Médica (LGHM), Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Núcleo de Pesquisas em Oncologia, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | - Aline Cruz
- Laboratório de Genética Humana e Médica (LGHM), Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Núcleo de Pesquisas em Oncologia, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | - Ândrea Ribeiro-Dos-Santos
- Laboratório de Genética Humana e Médica (LGHM), Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Rede de Pesquisa em Genômica Populacional Humana, Universidade Federal do Pará (UFPA), Belém, PA, Brazil.,Núcleo de Pesquisas em Oncologia, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
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35
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Zhong X, Dong Z, Dong H, Li J, Peng Z, Deng L, Zhu X, Sun Y, Lu X, Shen F, Su X, Zhang L, Gu Y, Zheng H. Prevalence and Prognostic Role of BRCA1/2 Variants in Unselected Chinese Breast Cancer Patients. PLoS One 2016; 11:e0156789. [PMID: 27257965 PMCID: PMC4892623 DOI: 10.1371/journal.pone.0156789] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 05/19/2016] [Indexed: 02/05/2023] Open
Abstract
Background The prevalence of BRCA1/2 variants in Chinese breast cancer patients varies among studies. Germline or somatic BRCA1/2 mutations are associated with sensitivity to poly(ADP-ribose) polymerase-1 inhibitors and DNA-damaging agents. We aimed to investigate the distribution of both somatic and germline BRCA1/2 variants in unselected Chinese breast cancer patients, and explore their roles in tumor phenotype and disease prognosis. Methods 507 breast cancer patients, unselected for family history of breast cancer or age at diagnosis, were prospectively enrolled from West China Hospital between Feb. 2008 and Feb. 2014. BRCA1/2 variants in the exons/flanking regions were detected in fresh-frozen tumors using next-generation sequencing and confirmed by independent methods. Germline/somatic status was validated by Sanger sequencing in paired blood/normal tissue. Results BRCA1/2 pathogenic or likely pathogenic (P/LP) variants were detected in 50 patients (9.9%), including 40 germline carriers (18 in BRCA1, 22 in BRCA2), 9 patients with somatic variants (3 in BRCA1, 6 in BRCA2), and 1 patient with concurrent germline/somatic variants in BRCA2. The triple-negative (21.4%) and Luminal B (9.7%) subtypes had higher rates of BRCA1/2 variants. In patients with disease stage 0~II, presence of a germline or somatic BRCA1 P/LP variant increased the risk of relapse as compared to non-carriers [univariate hazard ratio (HR): 3.70, P = 0.04]. Germline BRCA1 P/LP variants, which were associated with aggressive tumor phenotypes, predicted worse disease-free survival in the subgroup of stage 0~II (HR: 4.52, P = 0.02) and N0 (HR: 5.4, P = 0.04) compared to non-carriers. Conclusion A high frequency of germline and somatic BRCA1/2 P/LP variants was detected in unselected Chinese breast cancer patients. Luminal B subtype should be considered as a high-risk population of BRCA1/2 mutation, in addition to triple-negative breast cancer. BRCA1 status was associated with aggressive tumor phenotype and worse disease progression in early stage breast cancer patients.
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Affiliation(s)
- Xiaorong Zhong
- Laboratory of Molecular Diagnosis of Cancer, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan, P. R. China
| | - Zhengwei Dong
- Asia and Emerging Markets iMed, AstraZeneca, Shanghai, P. R. China
| | - Hua Dong
- Asia and Emerging Markets iMed, AstraZeneca, Shanghai, P. R. China
| | - Jiayuan Li
- Department of Epidemiology and Bio-Statistics, West China School of Public Health, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Zuxiang Peng
- Laboratory of Molecular Diagnosis of Cancer, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan, P. R. China
- Department of Thyroid and Breast Surgery, West China Hospital, Sichuan University, Chengdu Sichuan, P. R. China
| | - Ling Deng
- Laboratory of Molecular Diagnosis of Cancer, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan, P. R. China
| | - Xuehua Zhu
- Asia and Emerging Markets iMed, AstraZeneca, Shanghai, P. R. China
| | - Yun Sun
- Asia and Emerging Markets iMed, AstraZeneca, Shanghai, P. R. China
| | - Xuesong Lu
- Asia and Emerging Markets iMed, AstraZeneca, Shanghai, P. R. China
| | - Fuxiao Shen
- Asia and Emerging Markets iMed, AstraZeneca, Shanghai, P. R. China
| | - Xinying Su
- Asia and Emerging Markets iMed, AstraZeneca, Shanghai, P. R. China
| | - Liying Zhang
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, United States of America
| | - Yi Gu
- Asia and Emerging Markets iMed, AstraZeneca, Shanghai, P. R. China
- * E-mail: (YG); (HZ)
| | - Hong Zheng
- Laboratory of Molecular Diagnosis of Cancer, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu Sichuan, P. R. China
- Cancer center, West China Hospital, Sichuan University, Chengdu, Sichuan, P. R. China
- * E-mail: (YG); (HZ)
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36
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Kwong A, Shin VY, Au CH, Law FBF, Ho DN, Ip BK, Wong ATC, Lau SS, To RMY, Choy G, Ford JM, Ma ESK, Chan TL. Detection of Germline Mutation in Hereditary Breast and/or Ovarian Cancers by Next-Generation Sequencing on a Four-Gene Panel. J Mol Diagn 2016; 18:580-94. [PMID: 27157322 DOI: 10.1016/j.jmoldx.2016.03.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 03/01/2016] [Accepted: 03/21/2016] [Indexed: 10/21/2022] Open
Abstract
Mutation in BRCA1/BRCA2 genes accounts for 20% of familial breast cancers, 5% to 10% of which may be due to other less penetrant genes which are still incompletely studied. Herein, a four-gene panel was used to examine the prevalence of BRCA1, BRCA2, TP53, and PTEN in hereditary breast and ovarian cancers in Southern Chinese population. In this cohort, 948 high-risk breast and/or ovarian patients were recruited for genetic screening by next-generation sequencing (NGS). The performance of our NGS pipeline was evaluated with 80 Sanger-validated known mutations and eight negative cases. With appropriate bioinformatics analysis pipeline, the detection sensitivity of NGS is comparable with Sanger sequencing. The prevalence of BRCA1/BRCA2 germline mutations was 9.4% in our Chinese cohort, of which 48.8% of the mutations arose from hotspot mutations. With the use of a tailor-made algorithm, HomopolymerQZ, more mutations were detected compared with single mutation detection algorithm. The frequencies of PTEN and TP53 were 0.21% and 0.53%, respectively, in the Southern Chinese patients with breast and/or ovarian cancers. High-throughput NGS approach allows the incorporation of control cohort that provides an ethnicity-specific data for polymorphic variants. Our data suggest that hotspot mutations screening such as SNaPshot could be an effective preliminary screening alternative adopted in a standard clinical laboratory without NGS setup.
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Affiliation(s)
- Ava Kwong
- Department of Surgery, The University of Hong Kong, Hong Kong, People's Republic of China; Department of Surgery, Hong Kong Sanatorium & Hospital, Hong Kong, People's Republic of China; Hong Kong Hereditary Breast Cancer Family Registry, Hong Kong, People's Republic of China.
| | - Vivian Y Shin
- Department of Surgery, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Chun H Au
- Department of Molecular Pathology, Hong Kong Sanatorium & Hospital, Hong Kong, People's Republic of China
| | - Fian B F Law
- Hong Kong Hereditary Breast Cancer Family Registry, Hong Kong, People's Republic of China; Department of Molecular Pathology, Hong Kong Sanatorium & Hospital, Hong Kong, People's Republic of China
| | - Dona N Ho
- Department of Molecular Pathology, Hong Kong Sanatorium & Hospital, Hong Kong, People's Republic of China
| | - Bui K Ip
- Department of Molecular Pathology, Hong Kong Sanatorium & Hospital, Hong Kong, People's Republic of China
| | - Anthony T C Wong
- Department of Molecular Pathology, Hong Kong Sanatorium & Hospital, Hong Kong, People's Republic of China
| | - Silvia S Lau
- Department of Medical Physics and Research, Hong Kong Sanatorium & Hospital, Hong Kong, People's Republic of China
| | - Rene M Y To
- Department of Molecular Pathology, Hong Kong Sanatorium & Hospital, Hong Kong, People's Republic of China
| | - Gigi Choy
- Department of Molecular Pathology, Hong Kong Sanatorium & Hospital, Hong Kong, People's Republic of China
| | - James M Ford
- Department of Medicine (Oncology), Stanford University School of Medicine, Stanford, California
| | - Edmond S K Ma
- Hong Kong Hereditary Breast Cancer Family Registry, Hong Kong, People's Republic of China; Department of Molecular Pathology, Hong Kong Sanatorium & Hospital, Hong Kong, People's Republic of China
| | - Tsun L Chan
- Hong Kong Hereditary Breast Cancer Family Registry, Hong Kong, People's Republic of China; Department of Molecular Pathology, Hong Kong Sanatorium & Hospital, Hong Kong, People's Republic of China
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37
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Lhota F, Zemankova P, Kleiblova P, Soukupova J, Vocka M, Stranecky V, Janatova M, Hartmannova H, Hodanova K, Kmoch S, Kleibl Z. Hereditary truncating mutations of DNA repair and other genes in BRCA1/BRCA2/PALB2-negatively tested breast cancer patients. Clin Genet 2016; 90:324-33. [PMID: 26822949 DOI: 10.1111/cge.12748] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 01/22/2016] [Accepted: 01/25/2016] [Indexed: 12/12/2022]
Abstract
Hereditary breast cancer comprises a minor but clinically meaningful breast cancer (BC) subgroup. Mutations in the major BC-susceptibility genes are important prognostic and predictive markers; however, their carriers represent only 25% of high-risk BC patients. To further characterize variants influencing BC risk, we performed SOLiD sequencing of 581 genes in 325 BC patients (negatively tested in previous BRCA1/BRCA2/PALB2 analyses). In 105 (32%) patients, we identified and confirmed 127 truncating variants (89 unique; nonsense, frameshift indels, and splice site), 19 patients harbored more than one truncation. Forty-six (36 unique) truncating variants in 25 DNA repair genes were found in 41 (12%) patients, including 16 variants in the Fanconi anemia (FA) genes. The most frequent variant in FA genes was c.1096_1099dupATTA in FANCL that also show a borderline association with increased BC risk in subsequent analysis of enlarged groups of BC patients and controls. Another 81 (53 unique) truncating variants were identified in 48 non-DNA repair genes in 74 patients (23%) including 16 patients carrying variants in genes coding proteins of estrogen metabolism/signaling. Our results highlight the importance of mutations in the FA genes' family, and indicate that estrogen metabolism genes may reveal a novel candidate genetic component for BC susceptibility.
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Affiliation(s)
- F Lhota
- Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
| | - P Zemankova
- Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
| | - P Kleiblova
- Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.,Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - J Soukupova
- Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
| | - M Vocka
- Department of Oncology, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - V Stranecky
- Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - M Janatova
- Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
| | - H Hartmannova
- Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - K Hodanova
- Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - S Kmoch
- Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - Z Kleibl
- Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.
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Lerner-Ellis J, Khalouei S, Sopik V, Narod SA. Genetic risk assessment and prevention: the role of genetic testing panels in breast cancer. Expert Rev Anticancer Ther 2015; 15:1315-26. [PMID: 26523341 DOI: 10.1586/14737140.2015.1090879] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Multigene panel tests are being increasingly used for the genetic assessment of women with an apparent predisposition to breast cancer. Here, we review all studies reporting results from individuals who have undergone multigene panel testing for hereditary breast cancer. Across all gene panel studies, the prevalence of pathogenic mutations was highest in BRCA1 (5.3%) and BRCA2 (3.6%) and was lowest in PTEN (0.1%), CDH1 (0.1%) and STK11 (0.01%). After BRCA1/2, the prevalence of pathogenic mutations was highest in CHEK2 (1.3%), PALB2 (0.9%) and ATM (0.8%). The prevalence of variants of unknown significance was highest in ATM (9.6%). Based on the prevalence and penetrance of pathogenic mutations and the prevalence of variants of unknown significance, it is our interpretation that BRCA1, BRCA2, PALB2 and CHEK2 are the best candidates for inclusion in a clinical multigene breast cancer panel.
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Affiliation(s)
| | - Sam Khalouei
- a 1 Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, Canada
| | - Victoria Sopik
- d 4 Women's College Research Institute, Women's College Hospital, Toronto, Canada
| | - Steven A Narod
- d 4 Women's College Research Institute, Women's College Hospital, Toronto, Canada
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39
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Carethers JM, Stoffel EM. Lynch syndrome and Lynch syndrome mimics: The growing complex landscape of hereditary colon cancer. World J Gastroenterol 2015; 21:9253-9261. [PMID: 26309352 PMCID: PMC4541378 DOI: 10.3748/wjg.v21.i31.9253] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 06/13/2015] [Accepted: 07/08/2015] [Indexed: 02/06/2023] Open
Abstract
Hereditary non-polyposis colorectal cancer (HNPCC) was previously synonymous with Lynch syndrome; however, identification of the role of germline mutations in the DNA mismatch repair (MMR) genes has made it possible to differentiate Lynch syndrome from other conditions associated with familial colorectal cancer (CRC). Broadly, HNPCC may be dichotomized into conditions that demonstrate defective DNA MMR and microsatellite instability (MSI) vs those conditions that demonstrate intact DNA MMR. Conditions characterized by MMR deficient CRCs include Lynch syndrome (germline MMR mutation), Lynch-like syndrome (biallelic somatic MMR mutations), constitutional MMR deficiency syndrome (biallelic germline MMR mutations), and sporadic MSI CRC (somatic biallelic methylation of MLH1). HNPCC conditions with intact DNA MMR associated with familial CRC include polymerase proofreading associated polyposis and familial colorectal cancer type X. Although next generation sequencing technologies have elucidated the genetic cause for some HNPCC conditions, others remain genetically undefined. Differentiating between Lynch syndrome and the other HNPCC disorders has profound implications for cancer risk assessment and surveillance of affected patients and their at-risk relatives. Clinical suspicion coupled with molecular tumor analysis and testing for germline mutations can help differentiate the clinical mimicry within HNPCC and facilitate diagnosis and management.
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