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Yurgelun MB, Rhees J, Papadopoulos N, Vogelstein B, Boland CR. Taming Lynch Syndrome: The Remarkable Power of Prevention for One Family. Gastroenterology 2024:S0016-5085(24)05224-7. [PMID: 39038760 DOI: 10.1053/j.gastro.2024.06.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 06/25/2024] [Accepted: 06/27/2024] [Indexed: 07/24/2024]
Affiliation(s)
- Matthew B Yurgelun
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts.
| | - Jennifer Rhees
- Department of Medicine, UCSD School of Medicine, La Jolla, California
| | | | - Bert Vogelstein
- Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - C Richard Boland
- Department of Medicine, UCSD School of Medicine, La Jolla, California
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Campos FG, Bustamante-Lopez LA, D'Albuquerque LAC, Ribeiro Junior U, Herman P, Martinez CAR. A REVIEW TO HONOR THE HISTORICAL CONTRIBUTIONS OF PAULINE GROSS, ALDRED WARTHIN, AND HENRY LYNCH IN THE DESCRIPTION AND RECOGNITION OF INHERITANCE IN COLORECTAL CANCER. ARQUIVOS BRASILEIROS DE CIRURGIA DIGESTIVA : ABCD = BRAZILIAN ARCHIVES OF DIGESTIVE SURGERY 2024; 37:e1812. [PMID: 38958348 PMCID: PMC11216406 DOI: 10.1590/0102-6720202400019e1812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 03/19/2024] [Indexed: 07/04/2024]
Abstract
The present manuscript aimed to review the historical development and most important contributions regarding Lynch Syndrome since its first description, more than a century ago. In 1895, a reputed pathologist from Michigan University, Dr. Aldred Scott Warthin, got intrigued by the family history of a local seamstress called Pauline Gross. According to her prevision, she would present an early death due to cancer, which actually happened (from the uterus). Historically, her family was designated "Family G", comprising a group recognized as the longest and most detailed cancer genealogy that has ever been studied. Warthin concluded that its members had genetic susceptibility for cancer, and they are, nowadays, considered the first reported Lynch Syndrome family. At that time, however, the medical cancer community was far less receptive to the association between heredity and cancer, despite the description of other families with similar heredograms. Unfortunately, this historical fact remained somewhat dormant until another investigator inaugurated a new era in the understanding of family cancer clusters. After reports and studies from this family and many others, the condition initially called Cancer Family Syndrome was changed to the eponym Lynch Syndrome. This was a recognition of the extensive and dedicated work developed by Dr. Henry Lynch in describing various characteristics of the disease, and his efforts to establish the correct recommendations for its diagnosis and treatment. Although the future announces there is still far to go for a complete understanding of Lynch Syndrome, the remarkable contributions of Pauline's intuition, Warthin's perseverance, and Lynch's work consistency must never be forgotten by those who already have or will still benefit from this knowledge.
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Affiliation(s)
- Fábio Guilherme Campos
- Universidade de São Paulo, Faculty of Medicine, Gastroenterology Department, Colorectal Surgery Division - São Paulo (SP), Brazil
| | | | - Luiz Augusto Carneiro D'Albuquerque
- Universidade de São Paulo, Faculty of Medicine, Gastroenterology Department, Hepatic and Digestive Organs Transplant Division - São Paulo (SP), Brazil
| | - Ulysses Ribeiro Junior
- Universidade de São Paulo, Faculty of Medicine, Gastroenterology Department, Gastric and Small Bowel Division - São Paulo (SP), Brazil
| | - Paulo Herman
- Universidade de São Paulo, Faculty of Medicine, Gastroenterology Department, Hepatic Surgery Division - São Paulo (SP), Brazil
| | - Carlos Augusto Real Martinez
- Universidade Estadual de Campinas, Faculty of Medical Sciences, Department of Surgery, Colorectal Division - Campinas (SP), Brazil
- Universidade São Francisco, Faculty of Medicine - Bragança Paulista (SP), Brazil
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Shyr C, Blackford AL, Huang T, Ke J, Ouardaoui N, Trippa L, Syngal S, Ukaegbu C, Uno H, Nafa K, Stadler ZK, Offit K, Amos CI, Lynch PM, Chen S, Giardiello FM, Buchanan DD, Hopper JL, Jenkins MA, Southey MC, Win AK, Figueiredo JC, Braun D, Parmigiani G. A validation of models for prediction of pathogenic variants in mismatch repair genes. Genet Med 2022; 24:2155-2166. [PMID: 35997715 PMCID: PMC10312204 DOI: 10.1016/j.gim.2022.07.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 06/30/2022] [Accepted: 07/01/2022] [Indexed: 10/15/2022] Open
Abstract
PURPOSE Models used to predict the probability of an individual having a pathogenic homozygous or heterozygous variant in a mismatch repair gene, such as MMRpro, are widely used. Recently, MMRpro was updated with new colorectal cancer penetrance estimates. The purpose of this study was to evaluate the predictive performance of MMRpro and other models for individuals with a family history of colorectal cancer. METHODS We performed a validation study of 4 models, Leiden, MMRpredict, PREMM5, and MMRpro, using 784 members of clinic-based families from the United States. Predicted probabilities were compared with germline testing results and evaluated for discrimination, calibration, and predictive accuracy. We analyzed several strategies to combine models and improve predictive performance. RESULTS MMRpro with additional tumor information (MMRpro+) and PREMM5 outperformed the other models in discrimination and predictive accuracy. MMRpro+ was the best calibrated with an observed to expected ratio of 0.98 (95% CI = 0.89-1.08). The combination models showed improvement over PREMM5 and performed similar to MMRpro+. CONCLUSION MMRpro+ and PREMM5 performed well in predicting the probability of having a pathogenic homozygous or heterozygous variant in a mismatch repair gene. They serve as useful clinical decision tools for identifying individuals who would benefit greatly from screening and prevention strategies.
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Affiliation(s)
- Cathy Shyr
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA; Department of Data Science, Dana-Farber Cancer Institute, Boston, MA
| | - Amanda L Blackford
- Division of Biostatistics and Bioinformatics, Johns Hopkins School of Medicine, Baltimore, MD
| | - Theodore Huang
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA; Department of Data Science, Dana-Farber Cancer Institute, Boston, MA
| | - Jianfeng Ke
- Department of Data Science, Dana-Farber Cancer Institute, Boston, MA; Department of Mathematical Sciences, Tsinghua University, Beijing, China
| | - Nofal Ouardaoui
- Department of Computer Science, School of Engineering, Tufts University, Medford, MA
| | - Lorenzo Trippa
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA; Department of Data Science, Dana-Farber Cancer Institute, Boston, MA
| | - Sapna Syngal
- Cancer Genetics and Prevention Division, Dana-Farber Cancer Institute, Boston, MA; Division of Gastroenterology, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA
| | - Chinedu Ukaegbu
- Cancer Genetics and Prevention Division, Dana-Farber Cancer Institute, Boston, MA
| | - Hajime Uno
- Department of Data Science, Dana-Farber Cancer Institute, Boston, MA; McGraw/Patterson Center for Population Sciences, Dana-Farber Cancer Institute, Boston, MA
| | - Khedoudja Nafa
- Department of Pathology and Laboratory Medicine, Molecular Diagnostic Service, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Zsofia K Stadler
- Clinical Genetics Service, Department of Medicine, Memorial Sloan Kettering Comprehensive Cancer Center, New York, NY; Niehaus Center for Inherited Cancer Genomics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Kenneth Offit
- Clinical Genetics Service, Department of Medicine, Memorial Sloan Kettering Comprehensive Cancer Center, New York, NY; Niehaus Center for Inherited Cancer Genomics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Christopher I Amos
- Institute for Clinical and Translational Research, Baylor College of Medicine, Houston, TX; Section of Epidemiology and Population Sciences, Department of Medicine, Baylor College of Medicine, Houston, TX; Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX
| | - Patrick M Lynch
- Gastroenterology, Hepatology and Nutrition, University of Texas MD Anderson Cancer Center, Houston, TX
| | | | - Francis M Giardiello
- Department of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Daniel D Buchanan
- Colorectal Oncogenomics Group, Department of Clinical Pathology, The University of Melbourne, Parkville, Victoria, Australia; University of Melbourne Centre for Cancer Research, Victorian Comprehensive Cancer Centre, Parkville, Victoria, Australia; Genomic Medicine and Family Cancer Clinic, The Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - John L Hopper
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Mark A Jenkins
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia; University of Melbourne Centre for Cancer Research, Victorian Comprehensive Cancer Centre, Parkville, Victoria, Australia
| | - Melissa C Southey
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, Victoria, Australia; Department of Clinical Pathology, Melbourne Medical School, The University of Melbourne, Melbourne, Victoria, Australia; Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia
| | - Aung Ko Win
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Jane C Figueiredo
- Department of Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Danielle Braun
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA; Department of Data Science, Dana-Farber Cancer Institute, Boston, MA.
| | - Giovanni Parmigiani
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA; Department of Data Science, Dana-Farber Cancer Institute, Boston, MA
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Holter S, Hall MJ, Hampel H, Jasperson K, Kupfer SS, Larsen Haidle J, Mork ME, Palaniapppan S, Senter L, Stoffel EM, Weissman SM, Yurgelun MB. Risk assessment and genetic counseling for Lynch syndrome - Practice resource of the National Society of Genetic Counselors and the Collaborative Group of the Americas on Inherited Gastrointestinal Cancer. J Genet Couns 2022; 31:568-583. [PMID: 35001450 DOI: 10.1002/jgc4.1546] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 12/17/2021] [Accepted: 12/18/2021] [Indexed: 12/13/2022]
Abstract
Identifying individuals who have Lynch syndrome involves a complex diagnostic workup that includes taking a detailed family history and a combination of various tests such as immunohistochemistry and/or molecular which may be germline and/or somatic. The National Society of Genetic Counselors and the Collaborative Group of the Americas on Inherited Gastrointestinal Cancer have come together to publish this practice resource for the evaluation of Lynch syndrome. The purpose of this practice resource was to provide guidance and a testing algorithm for Lynch syndrome as well as recommendations on when to offer testing. This practice resource does not replace a consultation with a genetics professional. This practice resource includes explanations in support of this and a summary of background data. While this practice resource is not intended to serve as a review of Lynch syndrome, it includes a discussion of background information and cites a number of key publications which should be reviewed for a more in-depth understanding. This practice resource is intended for genetic counselors, geneticists, gastroenterologists, surgeons, medical oncologists, obstetricians and gynecologists, nurses, and other healthcare providers who evaluate patients for Lynch syndrome.
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Affiliation(s)
- Spring Holter
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Michael J Hall
- Department of Clinical Genetics, Cancer Prevention and Control Program, Fox Chase Cancer Center, Philadelphia, Pennsylvania, USA
| | - Heather Hampel
- Division of Human Genetics, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, Ohio, USA
| | | | - Sonia S Kupfer
- Section of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | | | - Maureen E Mork
- Department of Clinical Cancer Genetics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | | | - Leigha Senter
- Division of Human Genetics, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, Ohio, USA
| | - Elena M Stoffel
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Scott M Weissman
- Chicago Genetic Consultants, LLC, Northbrook, Illinois, USA
- Genome Medical, South San Francisco, California, USA
| | - Matthew B Yurgelun
- Dana-Farber Cancer Institute, Harvard Medical School, and Brigham and Women's Hospital, Boston, Massachusetts, USA
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Abstract
PURPOSE OF REVIEW Patients with Lynch syndrome have a high probability of developing colorectal and other carcinomas. This review provides a comprehensive assessment of the immunologic aspects of Lynch syndrome pathogenesis and provides an overview of potential immune interventions for patients with Lynch syndrome polyps and Lynch syndrome-associated carcinomas. RECENT FINDINGS Immunogenic properties of the majority of Lynch syndrome polyps and associated cancers include microsatellite instability leading to a high mutational burden and the development of novel frameshift peptides, i.e., neoantigens. In addition, patients with Lynch syndrome develop T cell responses in the periphery and in the tumor microenvironment (TME) to tumor-associated antigens, and a proinflammatory cytokine TME has also been identified. However, Lynch syndrome lesions also possess immunosuppressive entities such as alterations in MHC class I antigen presentation, TGFβ receptor mutations, regulatory T cells, and upregulation of PD-L1 on tumor-associated lymphocytes. The rich immune microenvironment of Lynch syndrome polyps and associated carcinomas provides an opportunity to employ the spectrum of immune-mediating agents now available to induce and enhance host immune responses and/or to also reduce immunosuppressive entities. These agents can be employed in the so-called prevention trials for the treatment of patients with Lynch syndrome polyps and for trials in patients with Lynch syndrome-associated cancers.
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Affiliation(s)
- Danielle M Pastor
- Laboratory of Tumor Immunology and Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- NIH Hematology Oncology Fellowship Program, National Institutes of Health, Bethesda, MD, USA
| | - Jeffrey Schlom
- Laboratory of Tumor Immunology and Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
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Abstract
AbstractLynch syndrome was formerly known as Hereditary Nonpolyposis Colorectal Cancer. Currently, these two nomenclatures each have their unique definitions and are no longer used interchangeably. The history of hereditary nonpolyposis colorectal cancer was first recognized formally in the literature by Henry Lynch in 1967. With advances of molecular genetics, there has been a transformation from clinical phenotype to genotype diagnostics. This has led to the ability to diagnose affected patients before they manifest with cancer, and therefore allow preventative surveillance strategies. Genotype diagnostics has shown a difference in penetrance of different cancer risks dependent on the gene containing the mutation. Surgery is recommended as prevention for some cancers; for others they are reserved for once cancer is noted. Various surveillance strategies are recommended dependent on the relative risk of cancer and the ability to intervene with surgery to impact on survival. Risk reduction through aspirin has shown some recent promise, and continues to be studied.
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Yu H, Hemminki K. Genetic epidemiology of colorectal cancer and associated cancers. Mutagenesis 2021; 35:207-219. [PMID: 31424514 DOI: 10.1093/mutage/gez022] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 07/31/2019] [Indexed: 02/06/2023] Open
Abstract
We review here data on familial risk in colorectal cancer (CRC) generated from the Swedish Family-Cancer Database, the largest resource of its kind in the world. Although the concordant familial risk for CRC (i.e. CRC risk in families of CRC patients) has been reasonably well established, the studies on discordant familial risks (i.e. CRC risk in families with any other cancers) are rare. Because different cancers could be caused by shared genetic susceptibility or shared environment, data of associations of discordant cancers may provide useful information for identifying common risk factors. In analyses between any of 33 discordant cancers relative risks (RRs) for discordant cancers were estimated in families with increasing numbers of probands with CRC; in the reverse analyses, RRs for CRC were estimated in families with increasing numbers of probands with discordant cancers. In separate analyses, hereditary non-polyposis colorectal cancer (HNPCC) families were excluded from the study, based on HNPCC related double primary cancers, to assess the residual familial RRs. We further reviewed familial risks of colon and rectal cancers separately in search for distinct discordant associations. The reviewed data suggested that colon cancer was associated with a higher familial risk for CRC compared to rectal cancer. The previous data had reported associations of CRC with melanoma, thyroid and eye cancers. Nervous system cancer was only associated with colon cancer, and lung cancer only associated with rectal cancer. The reviewed data on discordant association may provide guidance to gene identification and may help genetic counseling.
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Affiliation(s)
- Hongyao Yu
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld, Heidelberg, Germany.,Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Kari Hemminki
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld, Heidelberg, Germany
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Hissong E, Baek I, Costa V, Beneck D, Saxena A, Solomon JP, Song W. Identification of a Microsatellite Stable, EGFR-Mutant Lung Adenocarcinoma Developing in a Patient With Lynch Syndrome. JCO Precis Oncol 2020; 4:818-822. [PMID: 35050755 DOI: 10.1200/po.20.00074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Erika Hissong
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY
| | - Inji Baek
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY
| | - Victoria Costa
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY
| | - Debra Beneck
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY
| | - Ashish Saxena
- Department of Medicine New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY
| | - James P Solomon
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY
| | - Wei Song
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY
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Wang C, Wang Y, Hughes KS, Parmigiani G, Braun D. Penetrance of Colorectal Cancer Among Mismatch Repair Gene Mutation Carriers: A Meta-Analysis. JNCI Cancer Spectr 2020; 4:pkaa027. [PMID: 32923933 PMCID: PMC7476651 DOI: 10.1093/jncics/pkaa027] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Background Lynch syndrome, the most common colorectal cancer (CRC) syndrome, is caused by germline mismatch repair (MMR) genes. Precise estimates of age-specific risks are crucial for sound counseling of individuals managing a genetic predisposition to cancer, but published risk estimates vary. The objective of this work is to provide gene-, sex-, and age-specific risk estimates of CRC for MMR mutation carriers that comprehensively reflect the best available data. Methods We conducted a meta-analysis to combine risk information from multiple studies on Lynch syndrome-associated CRC. We used a likelihood-based approach to integrate reported measures of CRC risk and deconvolved aggregated information to estimate gene- and sex-specific risk. Results Our comprehensive search identified 10 studies (8 on MLH1, 9 on MSH2, and 3 on MSH6). We estimated the cumulative risk of CRC by age and sex in heterozygous mutation carriers. At age 70 years, for male and female carriers, respectively, risks for MLH1 were 43.9% (95% confidence interval [CI] = 39.6% to 46.6%) and 37.3% (95% CI = 32.2% to 40.2%), for MSH2 were 53.9% (95% CI = 49.0% to 56.3%) and 38.6% (95% CI = 34.1% to 42.0%), and for MSH6 were 12.0% (95% CI = 2.4% to 24.6%) and 12.3% (95% CI = 3.5% to 23.2%). Conclusions Our results provide up-to-date and comprehensive age-specific CRC risk estimates for counseling and risk prediction tools. These will have a direct clinical impact by improving prevention and management strategies for both individuals who are MMR mutation carriers and those considering testing.
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Affiliation(s)
- Cathy Wang
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Department of Data Sciences, Dana-Farber Cancer Institute, Boston, MA, USA
- Correspondence to: Cathy Wang, MS, Department of Biostatistics, Harvard T.H. Chan School of Public Health, Building II, 4th Floor, 655 Huntington Ave, Boston, MA 02215, USA (e-mail: )
| | - Yan Wang
- Division of Surgical Oncology, Massachusetts General Hospital, Boston, MA, USA
- Department of Breast Surgery, Shanghai Cancer Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Kevin S Hughes
- Division of Surgical Oncology, Massachusetts General Hospital, Boston, MA, USA
| | - Giovanni Parmigiani
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Department of Data Sciences, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Danielle Braun
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Department of Data Sciences, Dana-Farber Cancer Institute, Boston, MA, USA
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Huang Z, Chen X, Liu C, Cui L. The Clinical Significance of Microsatellite Instability in Precision Treatment. Methods Mol Biol 2020; 2204:33-38. [PMID: 32710312 DOI: 10.1007/978-1-0716-0904-0_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The recent years have seen the high heterogeneity of colorectal cancer (CRC) receiving increasing attention and being revealed step by step. Microsatellite instability (MSI), characterized by the dysfunction of mismatch repair gene, plays an important role in the heterogeneity of colorectal cancer. MSI status can be identified by immunohistochemistry for MMR protein such as MLH1, MSH2, PMS2, and MSH6 or PCR-based array for MMR gene. Recent studies have revealed MSI status is the only biomarker that can be used to select patients with high-risk stage II colon cancer for adjuvant chemotherapy. Furthermore, it always indicated better stage-adjusted survival when compared with microsatellite stable (MSS) tumors. For immunotherapy, patients with MSI tumors exhibited significant response to anti-PD-1 inhibitors after the failure to conventional therapy. In this chapter, we discuss the detection methods of MSI, the prognostic value of MSI, and its clinical guiding value in the management of precision therapy.
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Affiliation(s)
- Zhenyu Huang
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaojian Chen
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chenying Liu
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Long Cui
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Blount J, Prakash A. The changing landscape of Lynch syndrome due to PMS2 mutations. Clin Genet 2018; 94:61-69. [PMID: 29286535 PMCID: PMC5995637 DOI: 10.1111/cge.13205] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 12/12/2017] [Accepted: 12/24/2017] [Indexed: 12/11/2022]
Abstract
DNA repair pathways are essential for cellular survival as our DNA is constantly under assault from both exogenous and endogenous DNA damaging agents. Five major mammalian DNA repair pathways exist within a cell to maintain genomic integrity. Of these, the DNA mismatch repair (MMR) pathway is highly conserved among species and is well documented in bacteria. In humans, the importance of MMR is underscored by the discovery that a single mutation in any 1 of 4 genes within the MMR pathway (MLH1, MSH2, MSH6 and PMS2) results in Lynch syndrome (LS). LS is a autosomal dominant condition that predisposes individuals to a higher incidence of many malignancies including colorectal, endometrial, ovarian, and gastric cancers. In this review, we discuss the role of PMS2 in the MMR pathway, the evolving testing criteria used to identify variants in the PMS2 gene, the LS phenotype as well as the autosomal recessive condition called constitutional mismatch repair deficiency syndrome, and current methods used to elucidate the clinical impact of PMS2 mutations.
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Affiliation(s)
- Jessa Blount
- Mitchell Cancer Institute, The University of South Alabama, 1660 Springhill Avenue, Mobile, AL - 36604
| | - Aishwarya Prakash
- Mitchell Cancer Institute, The University of South Alabama, 1660 Springhill Avenue, Mobile, AL - 36604
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Kuwabara K, Suzuki O, Chika N, Kumamoto K, Minabe T, Fukuda T, Arai E, Tamaru JI, Akagi K, Eguchi H, Okazaki Y, Ishida H. Prevalence and molecular characteristics of DNA mismatch repair protein-deficient sebaceous neoplasms and keratoacanthomas in a Japanese hospital-based population. Jpn J Clin Oncol 2018; 48:514-521. [PMID: 29718441 DOI: 10.1093/jjco/hyy055] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 04/11/2018] [Indexed: 01/25/2023] Open
Abstract
Background Muir-Torre syndrome (MTS) is currently considered as a clinical variant of Lynch syndrome (LS). The clinical significance of the screening of patients with MTS-associated cutaneous tumors for the identification of LS has not yet been established. In addition, the prevalence and molecular characteristics of mismatch repair (MMR) protein deficiency in such tumors has scarcely been investigated in the Japanese population. Methods Immunohistochemistry (IHC) for MMR proteins (MLH1, MSH2, MSH6 and PMS2) was performed in formalin-fixed paraffin-embedded sections prepared from 16 sebaceous neoplasms (SNs) resected from 13 patients and 32 keratoacanthomas (KAs) resected from 31 patients at our institution between January 2005 and March 2014. Tumors showing MMR protein loss were further subjected to genetic analysis for detecting the presence of germline and/or somatic alterations of the MMR genes to identify the precise molecular mechanisms underlying the protein loss. Results Among the 16 SNs resected from 13 patients, eight SNs resected from five patients (38.5%) showed loss of expression of MMR proteins (MLH1/PMS2 loss, one patient; MSH2/MSH6 loss, four patients). Genetic analyses showed a pathogenic germline MSH2 mutation in one patient, somatic hypermethylation of the MLH1 promoter region in one patient, and somatic alterations of MSH2 without detectable germline mutations of MSH2 in three patients. None of the KAs examined in the study showed any loss of MMR protein expression. Conclusions The efficacy of routine screening of cutaneous neoplasms known to be associated with MTS by IHC for MMR proteins to identify LS may be fairly limited. MMR protein loss as determined by IHC in SNs is not always diagnostic of LS, and appears, in most cases, to be a result of somatic inactivation of the MMR genes.
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Affiliation(s)
- Kouki Kuwabara
- Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University
| | - Okihide Suzuki
- Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University
| | - Noriyasu Chika
- Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University
| | - Kensuke Kumamoto
- Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University
| | - Toshiharu Minabe
- Department of Plastic Surgery, Saitama Medical Center, Saitama Medical University
| | - Tomoo Fukuda
- Department of Dermatology, Saitama Medical School, Saitama Medical University
| | - Eiichi Arai
- Department of Pathology, International Center, Saitama Medical University
| | - Jun-Ichi Tamaru
- Department of Pathology, Saitama Medical Center, Saitama Medical University
| | - Kiwamu Akagi
- Department of Cancer Prevention and Molecular Genetics, Saitama Prefectural Cancer Center
| | - Hidetaka Eguchi
- Research Center for Genomic Medicine, Saitama Medical University.,Diagnosis and Therapeutics of Intractable Diseases and Intractable Disease Research Center, Juntendo University Graduate School of Medicine, Japan
| | - Yasushi Okazaki
- Research Center for Genomic Medicine, Saitama Medical University.,Diagnosis and Therapeutics of Intractable Diseases and Intractable Disease Research Center, Juntendo University Graduate School of Medicine, Japan
| | - Hideyuki Ishida
- Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University
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von Salomé J, Boonstra PS, Karimi M, Silander G, Stenmark-Askmalm M, Gebre-Medhin S, Aravidis C, Nilbert M, Lindblom A, Lagerstedt-Robinson K. Genetic anticipation in Swedish Lynch syndrome families. PLoS Genet 2017; 13:e1007012. [PMID: 29088233 PMCID: PMC5681299 DOI: 10.1371/journal.pgen.1007012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 11/10/2017] [Accepted: 09/08/2017] [Indexed: 12/15/2022] Open
Abstract
Among hereditary colorectal cancer predisposing syndromes, Lynch syndrome (LS) caused by mutations in DNA mismatch repair genes MLH1, MSH2, MSH6 or PMS2 is the most common. Patients with LS have an increased risk of early onset colon and endometrial cancer, but also other tumors that generally have an earlier onset compared to the general population. However, age at first primary cancer varies within families and genetic anticipation, i.e. decreasing age at onset in successive generations, has been suggested in LS. Anticipation is a well-known phenomenon in e.g neurodegenerative diseases and several reports have studied anticipation in heritable cancer. The purpose of this study is to determine whether anticipation can be shown in a nationwide cohort of Swedish LS families referred to the regional departments of clinical genetics in Lund, Stockholm, Linköping, Uppsala and Umeå between the years 1990–2013. We analyzed a homogenous group of mutation carriers, utilizing information from both affected and non-affected family members. In total, 239 families with a mismatch repair gene mutation (96 MLH1 families, 90 MSH2 families including one family with an EPCAM–MSH2 deletion, 39 MSH6 families, 12 PMS2 families, and 2 MLH1+PMS2 families) comprising 1028 at-risk carriers were identified among the Swedish LS families, of which 1003 mutation carriers had available follow-up information and could be included in the study. Using a normal random effects model (NREM) we estimate a 2.1 year decrease in age of diagnosis per generation. An alternative analysis using a mixed-effects Cox proportional hazards model (COX-R) estimates a hazard ratio of exp(0.171), or about 1.19, for age of diagnosis between consecutive generations. LS-associated gene-specific anticipation effects are evident for MSH2 (2.6 years/generation for NREM and hazard ratio of 1.33 for COX-R) and PMS2 (7.3 years/generation and hazard ratio of 1.86). The estimated anticipation effects for MLH1 and MSH6 are smaller. Genetic anticipation is a phenomenon where symptoms of a hereditary disease appear at an earlier age and/or are more severe in successive generations. In genetic disorders such as Fragile X syndrome, Myotonic dystrophy type 1 and Huntington disease, anticipation is caused by the expansion of unstable trinucleotide repeats during meiosis. Anticipation is also reported to occur in some hereditary cancers though the underlying mechanism behind this observation is unknown. Several studies have investigated anticipation in Lynch syndrome, the most common hereditary colorectal cancer syndrome, yet there is a debate concerning whether anticipation occurs and what underlying mechanism there is. The objective of this project is to study if anticipation is part of the clinical picture in Swedish families with LS, with the long term goal to enable better prediction of age at onset in family members. Our results suggest that anticipation occurs in families with mutation in MSH2 and PMS2, while the evidence is equivocal for MLH1 and MSH6.
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Affiliation(s)
- Jenny von Salomé
- Department of Molecular Medicine and Surgery, Karolinska Institutet, and Department of Clinical Genetics, Karolinska University Hospital, Solna, Stockholm, Sweden
- * E-mail:
| | - Philip S. Boonstra
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Masoud Karimi
- Department of Oncology, Radiumhemmet, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Gustav Silander
- Department of Radiation Sciences, Umeå University, Umeå, Sweden
| | - Marie Stenmark-Askmalm
- Department of Oncology, Linköping University, Linköping, Sweden
- Department of Clinical Genetics, Office for Medical Services, Division of Laboratory Medicine, Lund, Sweden
| | - Samuel Gebre-Medhin
- Department of Clinical Genetics, Office for Medical Services, Division of Laboratory Medicine, Lund, Sweden
- Division of Clinical Genetics, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Christos Aravidis
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Mef Nilbert
- Department of Clinical Sciences, Division of Oncology and Pathology, Lund University, Lund, Sweden
- Clinical Research Centre, Hvidovre Hospital, Copenhagen University, Hvidovre, Denmark
| | - Annika Lindblom
- Department of Molecular Medicine and Surgery, Karolinska Institutet, and Department of Clinical Genetics, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Kristina Lagerstedt-Robinson
- Department of Molecular Medicine and Surgery, Karolinska Institutet, and Department of Clinical Genetics, Karolinska University Hospital, Solna, Stockholm, Sweden
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Utsumi M, Tanakaya K, Mushiake Y, Kunitomo T, Yasuhara I, Taniguchi F, Arata T, Katsuda K, Aoki H, Takeuchi H. Metachronous colorectal carcinoma with massive submucosal invasion detected by annual surveillance in a Lynch syndrome patient: a case report. World J Surg Oncol 2017; 15:140. [PMID: 28764791 PMCID: PMC5540342 DOI: 10.1186/s12957-017-1207-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 07/22/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Lynch syndrome is the most common form of hereditary colorectal carcinoma. It is characterized by the presence of germline mutations in DNA mismatch repair genes. Mutation carriers have a lifetime risk of developing colorectal carcinoma of approximately 80%. Current treatment guidelines recommend periodic surveillance for colorectal carcinoma in patients with Lynch syndrome. However, the optimal interval between colonoscopies has not yet been determined. CASE PRESENTATION We describe a 54-year-old man with Lynch syndrome who was undergoing annual colonoscopy surveillance for the development of colorectal carcinoma. At 54, 57, 59, and 60 years old, a colonoscopy showed high-grade dysplasia and adenoma. Therefore, endoscopic mucosal resection was performed. At 61 years old, a colonoscopy showed metachronous colorectal carcinoma with massive submucosal invasion. He subsequently underwent laparotomy for colorectal carcinoma. CONCLUSIONS Annual surveillance using colonoscopy can detect colorectal carcinoma at an early stage, leading to reduced mortality. However, some patients might require a laparotomy, as was the case here. More frequent colonoscopic surveillance might be necessary to avoid surgery for colorectal carcinoma in Lynch syndrome patients with multiple risk factors for interval cancer.
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Affiliation(s)
- Masashi Utsumi
- Department of Surgery, National Hospital Organization, Iwakuni Clinical Center, 1-1-1 Atago-machi, Iwakuni-shi, Yamaguchi, 740-8510, Japan.
| | - Kohji Tanakaya
- Department of Surgery, National Hospital Organization, Iwakuni Clinical Center, 1-1-1 Atago-machi, Iwakuni-shi, Yamaguchi, 740-8510, Japan
| | - Yutaka Mushiake
- Department of Surgery, National Hospital Organization, Iwakuni Clinical Center, 1-1-1 Atago-machi, Iwakuni-shi, Yamaguchi, 740-8510, Japan
| | - Tomoyoshi Kunitomo
- Department of Surgery, National Hospital Organization, Iwakuni Clinical Center, 1-1-1 Atago-machi, Iwakuni-shi, Yamaguchi, 740-8510, Japan
| | - Isao Yasuhara
- Department of Surgery, National Hospital Organization, Iwakuni Clinical Center, 1-1-1 Atago-machi, Iwakuni-shi, Yamaguchi, 740-8510, Japan
| | - Fumitaka Taniguchi
- Department of Surgery, National Hospital Organization, Iwakuni Clinical Center, 1-1-1 Atago-machi, Iwakuni-shi, Yamaguchi, 740-8510, Japan
| | - Takashi Arata
- Department of Surgery, National Hospital Organization, Iwakuni Clinical Center, 1-1-1 Atago-machi, Iwakuni-shi, Yamaguchi, 740-8510, Japan
| | - Koh Katsuda
- Department of Surgery, National Hospital Organization, Iwakuni Clinical Center, 1-1-1 Atago-machi, Iwakuni-shi, Yamaguchi, 740-8510, Japan
| | - Hideki Aoki
- Department of Surgery, National Hospital Organization, Iwakuni Clinical Center, 1-1-1 Atago-machi, Iwakuni-shi, Yamaguchi, 740-8510, Japan
| | - Hitoshi Takeuchi
- Department of Surgery, National Hospital Organization, Iwakuni Clinical Center, 1-1-1 Atago-machi, Iwakuni-shi, Yamaguchi, 740-8510, Japan
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Zetner DB, Bisgaard ML. Familial Colorectal Cancer Type X. Curr Genomics 2017; 18:341-359. [PMID: 29081690 PMCID: PMC5635618 DOI: 10.2174/1389202918666170307161643] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Revised: 12/26/2016] [Accepted: 01/22/2017] [Indexed: 12/12/2022] Open
Abstract
The genetic background is unknown for the 50-60% of the HNPCC families, who fulfill the Amsterdam criteria, but do not have a mutation in an MMR gene, and is referred to as FCCTX. This study reviews the clinical, morphological and molecular characteristics of FCCTX, and discusses the molecular genetic methods used to localize new FCCTX genes, along with an overview of the genes and chromosomal areas that possibly relate to FCCTX. FCCTX is a heterogeneous group, mainly comprising cases caused by single high-penetrance genes, or by multiple low-penetrance genes acting together, and sporadic CRC cases. FCCTX differs in clinical, morphological and molecular genetic characteristics compared to LS, including a later age of onset, distal location of tumours in the colon, lower risk of developing extracolonic tumours and a higher adenoma/carcinoma ratio, which indicates a slower progression to CRC. Certain characteristics are shared with sporadic CRC, e.g. similarities in gene expression and a high degree of CIN+, with significanly increased 20q gain in FCCTX. Other molecular characteristics of FCCTX include longer telomere length and hypomethylation of LINE-1, both being a possible explanation for CIN+. Some genes in FCCTX families (RPS20, BMPR1A, SEMA4A) have been identified by using a combination of linkage analysis and sequencing. Sequencing strategies and subsequent bioinformatics are improving fast. Exome sequencing and whole genome sequencing are currently the most promising tools. Finally, the involvement of CNV’s and regulatory sequences are widely unexplored and would be interesting for further investigation in FCCTX.
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Affiliation(s)
- Diana Bregner Zetner
- Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marie Luise Bisgaard
- Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
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16
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Yu H, Hemminki A, Sundquist K, Hemminki K. Familial Associations of Colorectal Cancer with Other Cancers. Sci Rep 2017; 7:5243. [PMID: 28701784 PMCID: PMC5507930 DOI: 10.1038/s41598-017-05732-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 06/02/2017] [Indexed: 11/26/2022] Open
Abstract
Colorectal cancer (CRC) has a strong familial component which extends to discordant cancers (ie non-CRC tumors). This is best seen in cancer syndromes such as hereditary non-polyposis colorectal cancer (HNPCC) which predisposes to several tumor types. Population-based family studies have also found discordant associations for CRC but they have included cancers which manifest in HNPCC, and there is no convincing evidence of discordant associations beyond the known syndromes. We address familial associations of non-CRC tumors with CRC using the resources of the Swedish Family-Cancer Database and applying a powerful approach of assessing familial relative risks in families of increasing numbers of patients with discordant cancers. Among 1.8 million cancer patients and over 200,000 CRC cases consistent familial associations of CRC was observed for several HNPCC related cancers. However, for small intestinal, pancreatic and nervous system cancers RRs remained essentially unchanged when potential HNPCC families were excluded, suggesting involvement of genes not related to HNPCC. Two independent associations of CRC were found for melanoma, thyroid and eye cancers and these appeared not to be related to known syndromes. A number of other cancers associated with CRC in single analyses and independent studies are required to assess the relevance of such findings.
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Affiliation(s)
- Hongyao Yu
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 580, D-69120, Heidelberg, Germany.
| | - Akseli Hemminki
- Cancer Gene Therapy Group, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Helsinki University Hospital Comprehensive Cancer Center, Helsinki, Finland
| | - Kristina Sundquist
- Center for Primary Health Care Research, Lund University, 205 02, Malmö, Sweden
| | - Kari Hemminki
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 580, D-69120, Heidelberg, Germany.,Center for Primary Health Care Research, Lund University, 205 02, Malmö, Sweden
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Razvi MA, Giardiello FM, Law JK. DNA Mismatch Repair and Lynch Syndrome. CURRENT COLORECTAL CANCER REPORTS 2017. [DOI: 10.1007/s11888-017-0366-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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18
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Gonzalez RS, Washington K, Shi C. Current applications of molecular pathology in colorectal carcinoma. ACTA ACUST UNITED AC 2017. [DOI: 10.1186/s41241-017-0020-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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19
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Prevalence and clinicopathologic/molecular characteristics of mismatch repair-deficient colorectal cancer in the under-50-year-old Japanese population. Surg Today 2017; 47:1135-1146. [PMID: 28258479 DOI: 10.1007/s00595-017-1486-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 01/12/2017] [Indexed: 02/07/2023]
Abstract
PURPOSE To clarify the prevalence and clinicopathologic/molecular characteristics of mismatch repair (MMR)-deficient colorectal cancer in the young Japanese population. METHODS Immunohistochemical analyses for MMR proteins (MLH1, MSH2, MSH6, and PMS2) were performed in formalin-fixed paraffin-embedded sections prepared from the resected CRC specimens of 119 consecutive patients aged <50 years old, who underwent resection of the primary tumor at our institution between 1996 and 2015. Analyses for somatic BRAF V600E mutation, somatic hypermethylation of the MLH1 promoter, and germline MMR gene mutations were undertaken where indicated. RESULTS MMR protein loss was found in 10 patients (8.4%), 7 (5.9%) of whom were subsequently identified to have Lynch syndrome (LS). The remaining 3 patients were categorized as having sporadic MMR-deficient CRC (n = 2) or "possible LS (n = 1)". In multivariate logistic regression analysis, the presence of tumor-infiltrating lymphocytes (P < 0.01), right-sided location of the tumor (P = 0.01), and a history of LS-associated tumors in the first-degree relatives (P < 0.01) were identified as independent factors predictive of MMR-deficient CRC. CONCLUSION These results are of value in the clinical management of patients with the early onset CRC under circumstances where universal tumor screening approaches for LS are still not available, like in Japan.
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Dashti SG, Buchanan DD, Jayasekara H, Ait Ouakrim D, Clendenning M, Rosty C, Winship IM, Macrae FA, Giles GG, Parry S, Casey G, Haile RW, Gallinger S, Le Marchand L, Thibodeau SN, Lindor NM, Newcomb PA, Potter JD, Baron JA, Hopper JL, Jenkins MA, Win AK. Alcohol Consumption and the Risk of Colorectal Cancer for Mismatch Repair Gene Mutation Carriers. Cancer Epidemiol Biomarkers Prev 2017; 26:366-375. [PMID: 27811119 PMCID: PMC5336397 DOI: 10.1158/1055-9965.epi-16-0496] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 09/07/2016] [Accepted: 10/05/2016] [Indexed: 01/07/2023] Open
Abstract
Background: People with germline mutation in one of the DNA mismatch repair (MMR) genes have increased colorectal cancer risk. For these high-risk people, study findings of the relationship between alcohol consumption and colorectal cancer risk have been inconclusive.Methods: 1,925 MMR gene mutations carriers recruited into the Colon Cancer Family Registry who had completed a questionnaire on lifestyle factors were included. Weighted Cox proportional hazard regression models were used to estimate hazard ratios (HR) and 95% confidence intervals (CI) for the association between alcohol consumption and colorectal cancer.Results: Colorectal cancer was diagnosed in 769 carriers (40%) at a mean (SD) age of 42.6 (10.3) years. Compared with abstention, ethanol consumption from any alcoholic beverage up to 14 g/day and >28 g/day was associated with increased colorectal cancer risk (HR, 1.50; 95% CI, 1.09-2.07 and 1.69; 95% CI, 1.07-2.65, respectively; Ptrend = 0.05), and colon cancer risk (HR, 1.78; 95% CI, 1.27-2.49 and 1.94; 95% CI, 1.19-3.18, respectively; Ptrend = 0.02). However, there was no clear evidence for an association with rectal cancer risk. Also, there was no evidence for associations between consumption of individual alcoholic beverage types (beer, wine, spirits) and colorectal, colon, or rectal cancer risk.Conclusions: Our data suggest that alcohol consumption, particularly more than 28 g/day of ethanol (∼2 standard drinks of alcohol in the United States), is associated with increased colorectal cancer risk for MMR gene mutation carriers.Impact: Although these data suggested that alcohol consumption in MMR carriers was associated with increased colorectal cancer risk, there was no evidence of a dose-response, and not all types of alcohol consumption were associated with increased risk. Cancer Epidemiol Biomarkers Prev; 26(3); 366-75. ©2016 AACR.
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Affiliation(s)
- S Ghazaleh Dashti
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Daniel D Buchanan
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia
- Colorectal Oncogenomics Group, Genetic Epidemiology Laboratory, Department of Pathology, The University of Melbourne, Parkville, Victoria, Australia
| | - Harindra Jayasekara
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Victoria, Australia
| | - Driss Ait Ouakrim
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Mark Clendenning
- Colorectal Oncogenomics Group, Genetic Epidemiology Laboratory, Department of Pathology, The University of Melbourne, Parkville, Victoria, Australia
| | - Christophe Rosty
- Colorectal Oncogenomics Group, Genetic Epidemiology Laboratory, Department of Pathology, The University of Melbourne, Parkville, Victoria, Australia
- School of Medicine, University of Queensland, Herston, Queensland, Australia
| | - Ingrid M Winship
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia
- Genetic Medicine and Family Cancer Clinic, Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Finlay A Macrae
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia
- Genetic Medicine and Family Cancer Clinic, Royal Melbourne Hospital, Parkville, Victoria, Australia
- Colorectal Medicine and Genetics, The Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Graham G Giles
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Victoria, Australia
| | - Susan Parry
- New Zealand Familial Gastrointestinal Cancer Service, Auckland Hospital, Auckland, New Zealand
| | - Graham Casey
- Keck School of Medicine, Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
| | - Robert W Haile
- Department of Medicine, Division of Oncology, Stanford Cancer Institute, Stanford University, California
| | - Steven Gallinger
- Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Loïc Le Marchand
- Epidemiology Program, University of Hawaii Cancer Center, Honolulu, Hawaii
| | - Stephen N Thibodeau
- Molecular Genetics Laboratory, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Noralane M Lindor
- Department of Health Science Research, Mayo Clinic Arizona, Scottsdale, Arizona
| | - Polly A Newcomb
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
- School of Public Health, University of Washington, Seattle, Washington
| | - John D Potter
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
- School of Public Health, University of Washington, Seattle, Washington
- Centre for Public Health Research, Massey University, Wellington, New Zealand
| | - John A Baron
- Department of Medicine, University of North Carolina, Chapel Hill, North Carolina
| | - John L Hopper
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia
- Department of Epidemiology and Institute of Health and Environment, School of Public Health, Seoul National University, Seoul, Korea
| | - Mark A Jenkins
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Aung Ko Win
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia.
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Zahary MN, Ankathil R, Yahaya MM, Tuan Shariff SE, Kaur G. Protein expression profiles of deoxyribonucleic acid mismatch repair genes: Association with clinicopathological characteristics of Malaysian Lynch syndrome patients. J Histotechnol 2017. [DOI: 10.1080/01478885.2016.1251693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Mohd Nizam Zahary
- Faculty of Health Sciences, School of Diagnostic and Biomedicine, Universiti Sultan Zainal Abidin, Kuala Terengganu, Malaysia
| | - Ravindran Ankathil
- School of Medical Sciences, Human Genome Centre, Universiti Sains Malaysia Health Campus, Kubang Kerian, Malaysia
| | - Maya Mazuwin Yahaya
- Department of Surgery, School of Medical Sciences, Universiti Sains Malaysia Health Campus, Kubang Kerian, Malaysia
| | - Sharifah Emilia Tuan Shariff
- Department of Pathology, School of Medical Sciences, Universiti Sains Malaysia Health Campus, Kubang Kerian, Malaysia
| | - Gurjeet Kaur
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang, Malaysia
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Walcott FL, Patel J, Lubet R, Rodriguez L, Calzone KA. Hereditary cancer syndromes as model systems for chemopreventive agent development. Semin Oncol 2016; 43:134-145. [PMID: 26970132 PMCID: PMC10433689 DOI: 10.1053/j.seminoncol.2015.09.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Research in chemoprevention has undergone a shift in emphasis for pragmatic reasons from large, phase III randomized studies to earlier phase studies focused on safety, mechanisms, and utilization of surrogate endpoints such as biomarkers instead of cancer incidence. This transition permits trials to be conducted in smaller populations and at substantially reduced costs while still yielding valuable information. This article will summarize some of the current chemoprevention challenges and the justification for the use of animal models to facilitate identification and testing of chemopreventive agents as illustrated though four inherited cancer syndromes. Preclinical models of inherited cancer syndromes serve as prototypical systems in which chemopreventive agents can be developed for ultimate application to both the sporadic and inherited cancer settings.
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Affiliation(s)
- Farzana L Walcott
- National Institutes of Health, National Cancer Institute, Division of Cancer Prevention, Bethesda, MD, USA.
| | - Jigar Patel
- National Institutes of Health, National Cancer Institute, Division of Cancer Prevention, Bethesda, MD, USA
| | - Ronald Lubet
- Consultant to National Institutes of Health, National Cancer Institute, Division of Cancer Prevention, Chemopreventive Agent Development Research Group, Bethesda, MD, USA
| | - Luz Rodriguez
- National Institutes of Health, National Cancer Institute, Division of Cancer Prevention, Gastrointestinal & Other Cancers Research, Bethesda, MD, USA
| | - Kathleen A Calzone
- National Institutes of Health, National Cancer Institute, Center for Cancer Research, Genetics Branch, Bethesda, MD, USA.
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Abstract
Approximately 5 to 10% of colorectal cancers develop within a known hereditary syndrome. Specific underlying genetic mutations drive the clinical phenotype and it is imperative to determine the genetic etiology to provide meaningful surveillance and intervention. Recognizing potential patients and families with a hereditary predisposition is the first step in management. Syndromes can be categorized according to polyp burden as polyposis or nonpolyposis. Clinical assessment should start with a personal and family medical history, physical examination, and evaluation for the presence and type of colorectal polyps or cancers. Key information is gained from these simple steps and should guide the specific genetic analysis for diagnosis. Genetic counseling is a critical component to any hereditary colorectal cancer program and should be conducted before genetic testing to provide education about the implications of test results. This review focuses on the thought process that drives initial clinical evaluation and guides genetic testing for patients with suspected hereditary colorectal cancer syndromes.
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Affiliation(s)
- Matthew F. Kalady
- Department of Colorectal Surgery, Digestive Disease Institute, Cleveland, Ohio
- Sanford R. Weiss, MD, Center for Hereditary Colorectal Neoplasia, Cleveland, Ohio
| | - Brandie Heald
- Sanford R. Weiss, MD, Center for Hereditary Colorectal Neoplasia, Cleveland, Ohio
- Genomic Medicine Institute, Cleveland Clinic, Cleveland, Ohio
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24
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Venderbosch S, van Lent—van Vliet S, de Haan AFJ, Ligtenberg MJ, Goossens M, Punt CJA, Koopman M, Nagtegaal ID. EMAST is associated with a poor prognosis in microsatellite instable metastatic colorectal cancer. PLoS One 2015; 10:e0124538. [PMID: 25884216 PMCID: PMC4401564 DOI: 10.1371/journal.pone.0124538] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 03/15/2015] [Indexed: 01/05/2023] Open
Abstract
Purpose To determine the frequency and prognostic value of elevated microsatellite alterations at selected tetranucleotide repeats (EMAST) in metastatic colorectal cancer (mCRC) patients in relation to microsatellite instability (MSI) status and MSH3 protein expression. Material and Methods The frequency of EMAST was evaluated in mCRC patients with MSI tumors and microsatellite stable (MSS) tumors. A literature overview was performed to compare the frequency of EMAST in our study with existing data. Immunohistochemistry for MSH3 was compared with EMAST status. Outcome was studied in terms of overall survival (OS) of mCRC patients with MSI and MSS tumors. Results EMAST was evaluated in 89 patients with MSI tumors (including 39 patients with Lynch syndrome) and 94 patients with MSS tumors. EMAST was observed in 45.9% (84 out of 183) of patients, with an increased frequency in MSI tumors (79.8% versus 13.8%, p < 0.001). We found no correlation between EMAST and MSH3 protein expression. There was no effect of EMAST on prognosis in patients with MSS tumors, but patients with MSI / non-EMAST tumors had a significantly better prognosis than patients with MSI / EMAST tumors (OS: HR 3.22, 95% CI 1.25-8.30). Conclusion Frequency of EMAST was increased in mCRC patients with MSI tumors, compared to MSS tumors. Our data suggest that the presence of EMAST correlates with worse OS in these patients. There was no effect of EMAST on the prognosis of patients with MSS tumors. A limitation of our study is the small number of patients in our subgroup analysis.
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Affiliation(s)
- Sabine Venderbosch
- Department of Pathology, Radboud university medical center, PO Box 9101–6500 HB, Nijmegen, The Netherlands
- Department of Medical Oncology, Academic Medical Center, University of Amsterdam, PO Box 22660–1100 DD, Amsterdam, The Netherlands
| | - Shannon van Lent—van Vliet
- Department of Pathology, Radboud university medical center, PO Box 9101–6500 HB, Nijmegen, The Netherlands
| | - Anton F. J. de Haan
- Department for Health Evidence, Radboud university medical center, PO Box 9101–6500 HB, Nijmegen, The Netherlands
| | - Marjolijn J. Ligtenberg
- Department of Pathology, Radboud university medical center, PO Box 9101–6500 HB, Nijmegen, The Netherlands
- Department of Human Genetics, Radboud university medical center, PO Box 9101–6500 HB, Nijmegen, The Netherlands
| | - Monique Goossens
- Department of Pathology, Radboud university medical center, PO Box 9101–6500 HB, Nijmegen, The Netherlands
| | - Cornelis J. A. Punt
- Department of Medical Oncology, Academic Medical Center, University of Amsterdam, PO Box 22660–1100 DD, Amsterdam, The Netherlands
| | - Miriam Koopman
- Department of Medical Oncology, University Medical Center Utrecht, PO Box 85500–3508 GA, Utrecht, The Netherlands
| | - Iris D. Nagtegaal
- Department of Pathology, Radboud university medical center, PO Box 9101–6500 HB, Nijmegen, The Netherlands
- * E-mail:
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Abstract
Lynch syndrome, which is now recognized as the most common hereditary colorectal cancer condition, is characterized by the predisposition to a spectrum of cancers, primarily colorectal cancer and endometrial cancer. We chronicle over a century of discoveries that revolutionized the diagnosis and clinical management of Lynch syndrome, beginning in 1895 with Warthin's observations of familial cancer clusters, through the clinical era led by Lynch and the genetic era heralded by the discovery of causative mutations in mismatch repair (MMR) genes, to ongoing challenges.
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Affiliation(s)
- Henry T Lynch
- Department of Preventive Medicine and Public Health, Creighton University, 2500 California Plaza, Omaha, Nebraska 68178, USA
| | - Carrie L Snyder
- Department of Preventive Medicine and Public Health, Creighton University, 2500 California Plaza, Omaha, Nebraska 68178, USA
| | - Trudy G Shaw
- Department of Preventive Medicine and Public Health, Creighton University, 2500 California Plaza, Omaha, Nebraska 68178, USA
| | - Christopher D Heinen
- Center for Molecular Medicine, University of Connecticut Health Center, 263 Farmington Avenue, Farmington, Connecticut 06030-3101, USA
| | - Megan P Hitchins
- Department of Medicine (Oncology), Stanford Cancer Institute, Stanford University, Grant Building S169, 1291 Welch Road, Stanford, California 94305, USA
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Yamamoto H, Imai K. Microsatellite instability: an update. Arch Toxicol 2015; 89:899-921. [PMID: 25701956 DOI: 10.1007/s00204-015-1474-0] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 02/09/2015] [Indexed: 02/08/2023]
Abstract
Deficient DNA mismatch repair (MMR) results in a strong mutator phenotype known as microsatellite instability (MSI), which is a hallmark of Lynch syndrome-associated cancers. MSI is characterized by length alterations within simple repeated sequences that are called microsatellites. Lynch syndrome is primarily caused by mutations in the MMR genes, mainly MLH1 and MSH2, and less frequently in MSH6, and rarely PMS2, and large genomic rearrangements account for 5-20 % of all mutations. Germ line hemiallelic methylations of MLH1 or MSH2 are termed as epimutations and have been identified as causative of Lynch syndrome. Moreover, germ line 3' deletions of EPCAM gene is involved in MSH2 methylation. MSI is also observed in about 15 % of sporadic colorectal cancer (CRC), gastric cancer (GC), and endometrial cancer (EC), and at lower frequencies in other cancers, often in association with hypermethylation of the MLH1 gene. Trimethylation of histone H3 on Lys36 (H3K36 me3) is an epigenetic histone mark that was required for DNA MMR in vivo. Thus, mutations in the H3K36 trimethyltransferase SETD2 have been reported as a potential cause of MSI. Genetic, epigenetic, and transcriptomic differences have been identified between cancers with and without MSI. Recent comprehensive molecular characterizations of CRC, EC, and GC by The Cancer Genome Atlas indicate that MSI+ cancers are distinct biological entities. The BRAF V600E mutation is specifically associated with sporadic MSI+ CRCs with methylated MLH1, but is not associated with Lynch syndrome-related CRCs. Accumulating evidence indicates a role of interactions between MSI and microRNA (miRNA) in the pathogenesis of MSI-positive (MSI+) cancer. As another new mechanism underlying MSI, overexpression of miR-155 or miR-21 has been shown to downregulate the expression of the MMR genes. Gene targets of frameshift mutations caused by MSI are involved in various cellular functions, including DNA repair (MSH3 and MSH6), cell signaling (TGFBR2 and ACVR2A), apoptosis (BAX), epigenetic regulation (HDAC2 and ARID1A), and miRNA processing (TARBP2 and XPO5), and a subset of MSI+ CRCs reportedly shows the mutated miRNA machinery phenotype. Moreover, microsatellite repeats in miRNA genes, such as hsa-miR-1273c, may be novel MSI targets for CRC, and mutations in noncoding regulatory regions of MRE11, BAX (BaxΔ2), and HSP110 (HSP110ΔE9) may affect the efficiency of chemotherapy. Thus, analyses of MSI and its related molecular alterations in cancers are increasingly relevant in clinical settings, and MSI is a useful screening marker for identifying patients with Lynch syndrome and a prognostic factor for chemotherapeutic interventions. In this review, we summarize recent advances in the pathogenesis of MSI and focus on genome-wide analyses that indicate the potential use of MSI and related alterations as biomarkers and novel therapeutic targets.
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Affiliation(s)
- Hiroyuki Yamamoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, 216-8511, Japan,
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Jenkins MA, Dowty JG, Ait Ouakrim D, Mathews JD, Hopper JL, Drouet Y, Lasset C, Bonadona V, Win AK. Short-term risk of colorectal cancer in individuals with lynch syndrome: a meta-analysis. J Clin Oncol 2014; 33:326-31. [PMID: 25534380 DOI: 10.1200/jco.2014.55.8536] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
PURPOSE For carriers of germline mutations in DNA mismatch repair genes, the most relevant statistic for cancer prevention is colorectal cancer (Lynch syndrome) risk, particularly in the short term. METHODS We conducted a meta-analysis of all independent published Lynch syndrome studies reporting age- and sex-dependent colorectal cancer risks. We estimated 5-year colorectal cancer risk over different age groups, separately for male and female mutation carriers, and number needed to screen to prevent one death. RESULTS We pooled estimates from analyses of 1,114 Lynch syndrome families (508 with MLH1 mutations and 606 with MSH2 mutations). On average, one in 71 male and one in 102 female MLH1 or MSH2 mutation carriers in their 20s will be diagnosed with colorectal cancer in the next 5 years. These colorectal cancer risks increase with age, peaking in the 50s (one in seven males and one in 12 females), and then decrease with age (one in 13 males and one in 19 females in their 70s). Annual colonoscopy in 16 males or 25 females in their 50s would prevent one death from colorectal cancer over 5 years while resulting in almost no serious complications. In comparison, annual colonoscopy in 155 males or 217 females in their 20s would prevent one death while resulting in approximately one serious complication. CONCLUSION For MLH1 or MSH2 mutation carriers, current guidelines recommend colonoscopy every 1 to 2 years starting in their 20s. Our findings support this regimen from age 30 years; however, it might not be justifiable for carriers who are in their 20s.
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Affiliation(s)
- Mark A Jenkins
- Mark A. Jenkins, James G. Dowty, Driss Ait Ouakrim, John D. Mathews, John L. Hopper, and Aung Ko Win, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia; John L. Hopper, Institute of Health and Environment, School of Public Health, Seoul National University, Seoul, Korea; Youenn Drouet, Christine Lasset, and Valérie Bonadona, Université Lyon 1, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5558 Laboratoire de Biométrie et Biologie Évolutive, Villeurbanne; and Youenn Drouet, Christine Lasset, and Valérie Bonadona, Centre Léon Bérard, Lyon, France.
| | - James G Dowty
- Mark A. Jenkins, James G. Dowty, Driss Ait Ouakrim, John D. Mathews, John L. Hopper, and Aung Ko Win, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia; John L. Hopper, Institute of Health and Environment, School of Public Health, Seoul National University, Seoul, Korea; Youenn Drouet, Christine Lasset, and Valérie Bonadona, Université Lyon 1, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5558 Laboratoire de Biométrie et Biologie Évolutive, Villeurbanne; and Youenn Drouet, Christine Lasset, and Valérie Bonadona, Centre Léon Bérard, Lyon, France
| | - Driss Ait Ouakrim
- Mark A. Jenkins, James G. Dowty, Driss Ait Ouakrim, John D. Mathews, John L. Hopper, and Aung Ko Win, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia; John L. Hopper, Institute of Health and Environment, School of Public Health, Seoul National University, Seoul, Korea; Youenn Drouet, Christine Lasset, and Valérie Bonadona, Université Lyon 1, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5558 Laboratoire de Biométrie et Biologie Évolutive, Villeurbanne; and Youenn Drouet, Christine Lasset, and Valérie Bonadona, Centre Léon Bérard, Lyon, France
| | - John D Mathews
- Mark A. Jenkins, James G. Dowty, Driss Ait Ouakrim, John D. Mathews, John L. Hopper, and Aung Ko Win, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia; John L. Hopper, Institute of Health and Environment, School of Public Health, Seoul National University, Seoul, Korea; Youenn Drouet, Christine Lasset, and Valérie Bonadona, Université Lyon 1, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5558 Laboratoire de Biométrie et Biologie Évolutive, Villeurbanne; and Youenn Drouet, Christine Lasset, and Valérie Bonadona, Centre Léon Bérard, Lyon, France
| | - John L Hopper
- Mark A. Jenkins, James G. Dowty, Driss Ait Ouakrim, John D. Mathews, John L. Hopper, and Aung Ko Win, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia; John L. Hopper, Institute of Health and Environment, School of Public Health, Seoul National University, Seoul, Korea; Youenn Drouet, Christine Lasset, and Valérie Bonadona, Université Lyon 1, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5558 Laboratoire de Biométrie et Biologie Évolutive, Villeurbanne; and Youenn Drouet, Christine Lasset, and Valérie Bonadona, Centre Léon Bérard, Lyon, France
| | - Youenn Drouet
- Mark A. Jenkins, James G. Dowty, Driss Ait Ouakrim, John D. Mathews, John L. Hopper, and Aung Ko Win, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia; John L. Hopper, Institute of Health and Environment, School of Public Health, Seoul National University, Seoul, Korea; Youenn Drouet, Christine Lasset, and Valérie Bonadona, Université Lyon 1, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5558 Laboratoire de Biométrie et Biologie Évolutive, Villeurbanne; and Youenn Drouet, Christine Lasset, and Valérie Bonadona, Centre Léon Bérard, Lyon, France
| | - Christine Lasset
- Mark A. Jenkins, James G. Dowty, Driss Ait Ouakrim, John D. Mathews, John L. Hopper, and Aung Ko Win, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia; John L. Hopper, Institute of Health and Environment, School of Public Health, Seoul National University, Seoul, Korea; Youenn Drouet, Christine Lasset, and Valérie Bonadona, Université Lyon 1, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5558 Laboratoire de Biométrie et Biologie Évolutive, Villeurbanne; and Youenn Drouet, Christine Lasset, and Valérie Bonadona, Centre Léon Bérard, Lyon, France
| | - Valérie Bonadona
- Mark A. Jenkins, James G. Dowty, Driss Ait Ouakrim, John D. Mathews, John L. Hopper, and Aung Ko Win, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia; John L. Hopper, Institute of Health and Environment, School of Public Health, Seoul National University, Seoul, Korea; Youenn Drouet, Christine Lasset, and Valérie Bonadona, Université Lyon 1, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5558 Laboratoire de Biométrie et Biologie Évolutive, Villeurbanne; and Youenn Drouet, Christine Lasset, and Valérie Bonadona, Centre Léon Bérard, Lyon, France
| | - Aung Ko Win
- Mark A. Jenkins, James G. Dowty, Driss Ait Ouakrim, John D. Mathews, John L. Hopper, and Aung Ko Win, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Victoria, Australia; John L. Hopper, Institute of Health and Environment, School of Public Health, Seoul National University, Seoul, Korea; Youenn Drouet, Christine Lasset, and Valérie Bonadona, Université Lyon 1, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5558 Laboratoire de Biométrie et Biologie Évolutive, Villeurbanne; and Youenn Drouet, Christine Lasset, and Valérie Bonadona, Centre Léon Bérard, Lyon, France
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Affiliation(s)
- S E Kravochuck
- Department of Colorectal Surgery, The Sanford R. Weiss, M.D. Center for Hereditary Colorectal Neoplasia, Cleveland, Ohio, USA
| | - M F Kalady
- Department of Colorectal Surgery, The Sanford R. Weiss, M.D. Center for Hereditary Colorectal Neoplasia, Cleveland, Ohio, USA
| | - C A Burke
- Department of Colorectal Surgery, The Sanford R. Weiss, M.D. Center for Hereditary Colorectal Neoplasia, Cleveland, Ohio, USA
| | - B Heald
- Department of Colorectal Surgery, The Sanford R. Weiss, M.D. Center for Hereditary Colorectal Neoplasia, Cleveland, Ohio, USA
| | - J M Church
- Department of Colorectal Surgery, The Sanford R. Weiss, M.D. Center for Hereditary Colorectal Neoplasia, Cleveland, Ohio, USA
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MLH1 and MSH2 mutation screening in HNPCC families of Hungary - Two new MMR gene mutations. Eur J Surg Oncol 2014; 40:1445-52. [PMID: 25107687 DOI: 10.1016/j.ejso.2014.07.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 06/03/2014] [Accepted: 07/11/2014] [Indexed: 01/10/2023] Open
Abstract
INTRODUCTION Hereditary Non-Polyposis Colorectal Cancer is an inherited disease with deleterious germline mutations in the DNA mismatch repair genes causing the development of colon cancer and other malignancies. This is the first study in Hungary screening the population of our colorectal cancer patients in order to identify the prevalence of the disease. METHODS In families who met the Modified Amsterdam and Bethesda Criteria the removed tumor tissue was first examined by immunohistochemistry and microsatellite instability analysis. Those cases which showed high microsatellite instability underwent DNA sequencing and multiple ligation dependent probe amplification. RESULTS Of the 1576 patients with colorectal cancer underwent screening for the modified Amsterdam and Bethesda criteria, 69 (4.4%) and 166 (10.5%) fulfilled the criteria respectively. 15 patients (31%) of the Amsterdam positive group and 19 patients from the Bethesda positive (18.1%) were MSI-H. There were 8 pathogenic mutations identified in 9 families (60%) in the Amsterdam positive group. 5 mutations were found in 5 families (26%) in the Bethesda positive group. 12 pathogenic mutations were identified, two of these are newly identified, and being published first in this work. These two new mutations were located on MLH1 (g.31276_35231del) and MSH2 (c.969_970delTC) genes. CONCLUSION The prevalence of the mutations in the MLH1 and MSH2 genes was almost equal in our Hungarian colorectal cancer patients. One mutation in the MLH1 gene (c.143A > C; p.Q48P) was identified in three different families. Whether this mutation is the most frequent in the Hungarian population is still unidentified and warrant further investigation.
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Nizam ZM, Abdul Aziz AA, Kaur G, Abu Hassan MR, Mohd Sidek AS, Yeh LY, Mazuwin M, Ankathil R. Contribution of the MLH1 -93G>a promoter polymorphism in modulating susceptibility risk in Malaysian colorectal cancer patients. Asian Pac J Cancer Prev 2014; 14:619-24. [PMID: 23621208 DOI: 10.7314/apjcp.2013.14.2.619] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Colorectal cancer (CRC) exists in a more common sporadic form and less common hereditary forms, associated with the Lynch syndrome, familial adenomatous polyposis (FAP) and other rare syndromes. Sporadic CRC is believed to arise as a result of close interaction between environmental factors, including dietary and lifestyle habits, and genetic predisposition factors. In contrast, hereditary forms such as those related to the Lynch syndrome result from inheritance of germline mutations of mismatch repair (MMR) genes. However, in certain cases, the influence of low penetrance alleles in familial colorectal cancer susceptibility is also undeniable. AIM To investigate the genotype frequencies of MLH1 promoter polymorphism -93G>A and to determine whether it could play any role in modulating familial and sporadic CRC susceptibility risk. METHODS A case-control study comprising of 104 histopathologically confirmed CRC patients as cases (52 sporadic CRC and 52 Lynch syndrome patients) and 104 normal healthy individuals as controls was undertaken. DNA was extracted from peripheral blood and the polymorphism was genotyped employing PCR-RFLP methods. The genotypes were categorized into homozygous wild type, heterozygous and homozygous variants. The risk association between these polymorphisms and CRC susceptibility risk was calculated using binary logistic regression analysis and deriving odds ratios (ORs). RESULTS When risk association was investigated for all CRC patients as a single group, the heterozygous (G/A) genotype showed a significantly higher risk for CRC susceptibility with an OR of 2.273, (95%CI: 1.133-4.558 and p-value=0.021). When analyzed specifically for the 2 types of CRC, the heterozygous (G/A) genotype showed significantly higher risk for sporadic CRC susceptibility with and OR of 3.714, (95%CI: 1.416-9.740 and p-value=0.008). Despite high OR value was observed for Lynch syndrome (OR: 1.600, 95%CI: 0.715-3.581), the risk was not statistically significant (P=0.253). CONCLUSION Our results suggest an influence of MLH1 promoter polymorphism -93G>A in modulating susceptibility risk in Malaysian CRC patients, especially those with sporadic disease.
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Oeffinger KC, Baxi SS, Novetsky Friedman D, Moskowitz CS. Solid tumor second primary neoplasms: who is at risk, what can we do? Semin Oncol 2014; 40:676-89. [PMID: 24331190 DOI: 10.1053/j.seminoncol.2013.09.012] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Eighteen percent of incident malignancies in the United States are a second (or subsequent) cancer. Second primary neoplasms (SPNs), particularly solid tumors, are a major cause of mortality and serious morbidity among cancer survivors successfully cured of their first cancer. Multiple etiologies may lead to a cancer survivor subsequently being diagnosed with an SPN, including radiotherapy for the first cancer, unhealthy lifestyle behaviors, genetic factors, aging, or an interaction between any of these factors. In this article, we discuss these factors and synthesize this information for use in clinical practice, including preventive strategies and screening recommendations for SPNs.
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Affiliation(s)
- Kevin C Oeffinger
- Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY; Department of Pediatrics, Memorial Sloan-Kettering Cancer Center, New York, NY.
| | - Shrujal S Baxi
- Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY
| | | | - Chaya S Moskowitz
- Department of Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY
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Bellizzi AM. Contributions of molecular analysis to the diagnosis and treatment of gastrointestinal neoplasms. Semin Diagn Pathol 2013; 30:329-61. [DOI: 10.1053/j.semdp.2013.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Win AK, Macinnis RJ, Dowty JG, Jenkins MA. Criteria and prediction models for mismatch repair gene mutations: a review. J Med Genet 2013; 50:785-93. [PMID: 23956446 DOI: 10.1136/jmedgenet-2013-101803] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
One of the strongest predictors of colorectal cancer risk is carrying a germline mutation in a DNA mismatch repair (MMR) gene. Once identified, mutation carriers can be recommended for intensive screening that will substantially reduce their high colorectal cancer risk. Conversely, the relatives of carriers identified as non-carriers can be relieved of the burden of intensive screening. Criteria and prediction models that identify likely mutation carriers are needed for cost-effective, targeted, germline testing for MMR gene mutation. We reviewed 12 criteria/guidelines and 8 prediction models (Leiden, Amsterdam-plus, Amsterdam-alternative, MMRpro, PREMM1,2,6, MMRpredict, Associazione Italiana per lo studio della Familiarità ed Ereditarietà dei tumori Gastrointestinali (AIFEG) and the Myriad Genetics Prevalence table) for identifying mutation carriers. While criteria are only used to identify individuals with colorectal cancer (yes/no for screening followed by germline testing), all prediction models except MMRpredict and Myriad tables can predict the probability of carrying mutations for individuals with or without colorectal cancer. We conducted a meta-analysis of the discrimination performance of 17 studies that validated the prediction models. The pooled estimate for the area under curve was 0.80 (95% CI 0.72 to 0.88) for MMRpro, 0.81 (95% CI 0.73 to 0.88) for MMRpredict, 0.84 (95% CI 0.81 to 0.88) for PREMM, and 0.85 (95% CI 0.78 to 0.91) for Leiden model. Given the high degree of overlap in the CIs, we cannot state that one model has a higher discrimination than any of the others. Overall, the existing statistical models have been shown to be sensitive and specific (at a 5% cut-off) in predicting MMR gene mutation carriers. Future models may need to: provide prediction of PMS2 mutations, take into account a wider range of Lynch syndrome-associated cancers when assessing family history, and be applicable to all people irrespective of any cancer diagnosis.
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Affiliation(s)
- Aung Ko Win
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, The University of Melbourne, Parkville, Victoria, Australia
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Dowty JG, Win AK, Buchanan DD, Lindor NM, Macrae FA, Clendenning M, Antill YC, Thibodeau SN, Casey G, Gallinger S, Marchand LL, Newcomb PA, Haile RW, Young GP, James PA, Giles GG, Gunawardena SR, Leggett BA, Gattas M, Boussioutas A, Ahnen DJ, Baron JA, Parry S, Goldblatt J, Young JP, Hopper JL, Jenkins MA. Cancer risks for MLH1 and MSH2 mutation carriers. Hum Mutat 2013; 34:490-7. [PMID: 23255516 DOI: 10.1002/humu.22262] [Citation(s) in RCA: 182] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Accepted: 12/03/2012] [Indexed: 12/28/2022]
Abstract
We studied 17,576 members of 166 MLH1 and 224 MSH2 mutation-carrying families from the Colon Cancer Family Registry. Average cumulative risks of colorectal cancer (CRC), endometrial cancer (EC), and other cancers for carriers were estimated using modified segregation analysis conditioned on ascertainment criteria. Heterogeneity in risks was investigated using a polygenic risk modifier. Average CRC cumulative risks at the age of 70 years (95% confidence intervals) for MLH1 and MSH2 mutation carriers, respectively, were estimated to be 34% (25%-50%) and 47% (36%-60%) for male carriers and 36% (25%-51%) and 37% (27%-50%) for female carriers. Corresponding EC risks were 18% (9.1%-34%) and 30% (18%-45%). A high level of CRC risk heterogeneity was observed (P < 0.001), with cumulative risks at the age of 70 years estimated to follow U-shaped distributions. For example, 17% of male MSH2 mutation carriers have estimated lifetime risks of 0%-10% and 18% have risks of 90%-100%. Therefore, average risks are similar for the two genes but there is so much individual variation about the average that large proportions of carriers have either very low or very high lifetime cancer risks. Our estimates of CRC and EC cumulative risks for MLH1 and MSH2 mutation carriers are the most precise currently available.
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Affiliation(s)
- James G Dowty
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, The University of Melbourne, Parkville, Victoria, Australia.
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Mishra N, Hall J. Identification of patients at risk for hereditary colorectal cancer. Clin Colon Rectal Surg 2013; 25:67-82. [PMID: 23730221 DOI: 10.1055/s-0032-1313777] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Diagnosis of hereditary colorectal cancer syndromes requires clinical suspicion and knowledge of such syndromes. Lynch syndrome is the most common cause of hereditary colorectal cancer. Other less common causes include familial adenomatous polyposis (FAP), Peutz-Jeghers syndrome (PJS), juvenile polyposis syndrome, and others. There have been a growing number of clinical and molecular tools used to screen and test at risk individuals. Screening tools include diagnostic clinical criteria, family history, genetic prediction models, and tumor testing. Patients who are high risk based on screening should be referred for genetic testing.
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Affiliation(s)
- Nitin Mishra
- Department of Colon and Rectal Surgery, Lahey Clinic, Burlington, Massachusetts
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Fu L, Sheng JQ, Li XO, Jin P, Mu H, Han M, Huang JS, Sun ZQ, Li AQ, Wu ZT, Li SR. Mismatch repair gene mutation analysis and colonoscopy surveillance in Chinese Lynch syndrome families. Cell Oncol (Dordr) 2013; 36:225-31. [PMID: 23640085 DOI: 10.1007/s13402-013-0130-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2013] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Lynch syndrome (or HNPCC) is a colorectal cancer syndrome caused by germline mutations in either one of the DNA mismatch repair (MMR) genes hMLH1, hMSH2, hMSH6 or hPMS2. Mutations in hMLH1 and hMSH2 are most prevalent. Here we aimed to determine the cancer risk of MMR gene mutation carriers and, in addition, the efficacy of colonoscopy surveillance in Chinese Lynch syndrome family members with and without MMR gene mutations. METHODS A Lynch syndrome family registry encompassing 106 families in Northern China was recently established. Detailed pedigree data for each family were collected and hMLH1 and hMSH2 gene mutation analyses were performed. Germ-line mutations were identified in probands from 42 of these families, and additional genetic analyses were performed in each member of these 42 families to identify mutation and non-mutation carriers. Among the family members included, 180 received colonoscopy and the remaining cases were followed without colonoscopy. RESULTS Overall 54.8 % of the Lynch syndrome family members carried MMR gene mutations, and these mutation carriers exhibited significantly higher colorectal cancer and other Lynch syndrome-associated cancer risks as compared to non-mutation carriers. The cumulative risk for all Lynch syndrome-related cancers at age 70 was 93.8 % for both hMLH1 and hMSH2 mutation carriers, and 81.7 % and 93.1 % for colorectal cancer at this age, respectively. Whereas 43 of 102 (42.2 %) mutation carriers exhibited significant colonoscopy findings, including 10 colorectal cancers, none of 78 non-mutation carriers exhibited significant findings, and no cancers were detected. In addition, in the mutation carriers, colonoscopy surveillance led to the detection of more early stage cancers than in the non-surveillance group (70.0 % versus 36.5 %, p < 0.01). CONCLUSION In Lynch syndrome family members, we recommend pre-symptomatic MMR gene mutation analysis in order to identify high risk individuals for colonoscopy surveillance.
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Affiliation(s)
- Lei Fu
- Department of Gastroenterology, Third Military Medical University and General Hospital of Beijing Military Region, Chongqing, 400038, China
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Win AK, Lindor NM, Jenkins MA. Risk of breast cancer in Lynch syndrome: a systematic review. Breast Cancer Res 2013; 15:R27. [PMID: 23510156 PMCID: PMC3672741 DOI: 10.1186/bcr3405] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Accepted: 03/18/2013] [Indexed: 12/11/2022] Open
Abstract
Introduction Lynch syndrome is an autosomal dominantly inherited disorder of cancer susceptibility caused by germline mutations in the DNA mismatch repair (MMR) genes. Mutation carriers have a substantial burden of increased risks of cancers of the colon, rectum, endometrium and several other organs which generally occur at younger ages than for the general population. The issue of whether breast cancer risk is increased for MMR gene mutation carriers has been debated with evidence for and against this association. Methods Using the PUBMED, we identified all relevant studies of breast cancer associated with Lynch syndrome that were published by 15 December 2012. In the review, we included: (i) molecular studies that reported microsatellite instability and/or immunohistochemistry in breast cancer tumors of MMR gene mutation carriers; and (ii) risk studies that investigated risk of breast cancer for confirmed MMR gene mutation carriers or families or clinically and/or pathologically defined Lynch syndrome families. Results We identified 15 molecular studies and, when combined, observed 62 of 122 (51%; 95% CI 42 to 60%) breast cancers in MMR gene mutation carriers were MMR-deficient. Of the 21 risk studies identified, 13 did not observe statistical evidence for an association of breast cancer risk with Lynch syndrome while 8 studies found an increased risk of breast cancer ranging from 2- to 18-fold compared with the general population (or non-carriers). There is only one prospective study demonstrating an elevated risk of breast cancer for MMR gene mutation carriers compared with the general population (standardized incidence ratio 3.95; 95% CI 1.59, 8.13). Conclusions Since breast cancer is a relatively common disease in the general population, more precise estimates of risk and gene-specific risks will need to utilize large prospective cohort studies with a long follow-up. While current data are inconclusive at a population level, individual tumor testing results suggest that MMR deficiency is involved with breast cancers in some individuals with Lynch syndrome.
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Warrier SK, Lynch AC, Heriot AG. A bi-national perspective on the management of young patients with colorectal cancer. ANZ J Surg 2013; 83:636-40. [DOI: 10.1111/ans.12071] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2012] [Indexed: 12/30/2022]
Affiliation(s)
- Satish K. Warrier
- Department of Surgery; Epworth Healthcare; Melbourne; Victoria; Australia
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Hiljadnikova-Bajro M, Josifovski T, Panovski M, J. Dimovski A. Molecular profile of the Lynch Syndrome in the Republic of Macedonia. MAKEDONSKO FARMACEVTSKI BILTEN 2012. [DOI: 10.33320/maced.pharm.bull.2012.58.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The most frequent type of hereditary colorectal cancer, the one occurring in the setting of the Lynch syndrome (LS) is considered a phenotypic manifestation of a germline defect in the mismatch repair mechanism i.e. in the MLH1, MSH2, MSH6 or PMS2 gene. Aiming towards establishment of a standardized protocol involving molecular analyses for diagnosis of this syndrome and developing a unique national register of families with hereditary colorectal cancer syndromes in the Republic of Macedonia, we began a prospective study to reveal the genetic defects among Macedonian patients with colorectal cancer (CRC) and identifying families with hereditary CRC. A total of 53 patients fulfilling the revised Bethesda criteria for MSI-genetic testing were compared to 350 patients with sporadic CRC. The results reveal significant differences in age at diagnosis (p=0.03), involvement of microsatellite instability (p<0.0001) and localization
of the tumor in respect to flexura lienalis (p=0.009) and suggest affiliation of the majority of the “Bethesda+” CRCs to the so called Familial Colorectal cancer Type X group. The molecular characterization of LS suspects identified the novel MLH1 c.392C>G nonsense mutation with a possible founder effect in the Macedonian population, the MLH1 ex.3-12 deletion, as well as the c.244A>G mutation, IVS14- 19A>G and IVS4+65A>C changes in MLH1 without confirmed pathological significance. The observed high frequency (87.5%) of the Ile219Val (c.655A>G) variant in MLH1 among the LS suspects prompts further analyses to evaluate its involvement in the development of hereditary CRC by itself or as a risk modifying factor among the patients from the Republic of Macedonia.
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Schneider R, Schneider C, Kloor M, Fürst A, Möslein G. Das Lynch-Syndrom. COLOPROCTOLOGY 2012. [DOI: 10.1007/s00053-012-0309-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Neumaier C, Nittka S, Neumaier M. Loss of expression of the tumor suppressor CEACAM1 links different hereditary colorectal carcinoma subtypes to the genesis of sporadic colorectal carcinoma. ACTA ACUST UNITED AC 2012; 35:563-8. [PMID: 23038226 DOI: 10.1159/000342673] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
According to their carcinogenesis, colorectal cancer (CRC) subtypes show distinct molecular parameters. Hereditary non-polypous colorectal cancer (HNPCC) is the most common inherited CRC characterized by clinical criteria and confirmed microsatellite instability (MSI). Interestingly, a recently identified subtype, familial colorectal cancer type X (FCC-X), shows the same clinical criteria but microsatellite stability (MSS). CEACAM1 is a known tumor suppressor that regulates apoptosis in colon cells, and its loss is one of the most frequent events in early tumorigenesis of CRC. Therefore its loss may characterize precursor colon cells prior to neoplastic transformation. We analyzed tumor specimens of HNPCC and FCC-X patients in order to investigate whether there is a loss of CEACAM1 expression analogous to sporadic CRC and whether the expression of CEACAM1 would distinguish between these tumor entities. No differences in CEACAM1 expression were noted between HNPPC (n = 38) and FCC-X (n = 30) tumors. CEACAM1 was reduced in near-identical frequencies in 36/38 (95%) HNPCC and 29/30 (97%) FCC-X. This is the first report to demonstrate the loss of CEACAM1 expression in hereditary CRC. There was no difference between HNPCC and FCC-X. The frequency of expression loss was comparable to sporadic CRC, indicating that loss of CEACAM1 is an early event in colorectal tumorigenesis linking the genesis of sporadic and hereditary CRC.
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Affiliation(s)
- Christian Neumaier
- Clinic of Radiation Oncology, Universitätsmedizin Mannheim, University of Heidelberg, Mannheim, Germany
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Formes héréditaires des cancers colorectaux. Rev Med Interne 2012; 33:471-4. [DOI: 10.1016/j.revmed.2012.01.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Accepted: 01/14/2012] [Indexed: 01/13/2023]
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Win AK, Lindor NM, Young JP, Macrae FA, Young GP, Williamson E, Parry S, Goldblatt J, Lipton L, Winship I, Leggett B, Tucker KM, Giles GG, Buchanan DD, Clendenning M, Rosty C, Arnold J, Levine AJ, Haile RW, Gallinger S, Le Marchand L, Newcomb PA, Hopper JL, Jenkins MA. Risks of primary extracolonic cancers following colorectal cancer in lynch syndrome. J Natl Cancer Inst 2012; 104:1363-72. [PMID: 22933731 DOI: 10.1093/jnci/djs351] [Citation(s) in RCA: 160] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Lynch syndrome is a highly penetrant cancer predisposition syndrome caused by germline mutations in DNA mismatch repair (MMR) genes. We estimated the risks of primary cancers other than colorectal cancer following a diagnosis of colorectal cancer in mutation carriers. METHODS We obtained data from the Colon Cancer Family Registry for 764 carriers of an MMR gene mutation (316 MLH1, 357 MSH2, 49 MSH6, and 42 PMS2), who had a previous diagnosis of colorectal cancer. The Kaplan-Meier method was used to estimate their cumulative risk of cancers 10 and 20 years after colorectal cancer. We estimated the age-, sex-, country- and calendar period-specific standardized incidence ratios (SIRs) of cancers following colorectal cancer, compared with the general population. RESULTS Following colorectal cancer, carriers of MMR gene mutations had the following 10-year risk of cancers in other organs: kidney, renal pelvis, ureter, and bladder (2%, 95% confidence interval [CI] = 1% to 3%); small intestine, stomach, and hepatobiliary tract (1%, 95% CI = 0.2% to 2%); prostate (3%, 95% CI = 1% to 5%); endometrium (12%, 95% CI = 8% to 17%); breast (2%, 95% CI = 1% to 4%); and ovary (1%, 95% CI = 0% to 2%). They were at elevated risk compared with the general population: cancers of the kidney, renal pelvis, and ureter (SIR = 12.54, 95% CI = 7.97 to 17.94), urinary bladder (SIR = 7.22, 95% CI = 4.08 to 10.99), small intestine (SIR = 72.68, 95% CI = 39.95 to 111.29), stomach (SIR = 5.65, 95% CI = 2.32 to 9.69), and hepatobiliary tract (SIR = 5.94, 95% CI = 1.81 to 10.94) for both sexes; cancer of the prostate (SIR = 2.05, 95% CI = 1.23 to 3.01), endometrium (SIR = 40.23, 95% CI = 27.91 to 56.06), breast (SIR = 1.76, 95% CI = 1.07 to 2.59), and ovary (SIR = 4.19, 95% CI = 1.28 to 7.97). CONCLUSION Carriers of MMR gene mutations who have already had a colorectal cancer are at increased risk of a greater range of cancers than the recognized spectrum of Lynch syndrome cancers, including breast and prostate cancers.
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Affiliation(s)
- Aung Ko Win
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, Melbourne School of Population Health, Level 3, 207 Bouverie Street, The University of Melbourne, VIC 3010, Australia
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Ku CS, Cooper DN, Wu M, Roukos DH, Pawitan Y, Soong R, Iacopetta B. Gene discovery in familial cancer syndromes by exome sequencing: prospects for the elucidation of familial colorectal cancer type X. Mod Pathol 2012; 25:1055-68. [PMID: 22522846 DOI: 10.1038/modpathol.2012.62] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Recent advances in genotyping and sequencing technologies have provided powerful tools with which to explore the genetic basis of both Mendelian (monogenic) and sporadic (polygenic) diseases. Several hundred genome-wide association studies have so far been performed to explore the genetics of various polygenic or complex diseases including those cancers with a genetic predisposition. Exome sequencing has also proven very successful in elucidating the etiology of a range of hitherto poorly understood Mendelian disorders caused by high-penetrance mutations. Despite such progress, the genetic etiology of several familial cancers, such as familial colorectal cancer type X, has remained elusive. Familial colorectal cancer type X and Lynch syndrome are similar in terms of their fulfilling certain clinical criteria, but the former group is not characterized by germline mutations in DNA mismatch-repair genes. On the other hand, the genetics of sporadic colorectal cancer have been investigated by genome-wide association studies, leading to the identification of multiple new susceptibility loci. In addition, there is increasing evidence to suggest that familial and sporadic cancers exhibit similarities in terms of their genetic etiologies. In this review, we have summarized our current knowledge of familial colorectal cancer type X, discussed current approaches to probing its genetic etiology through the application of new sequencing technologies and the recruitment of the results of colorectal cancer genome-wide association studies, and explore the challenges that remain to be overcome given the uncertainty of the current genetic model (ie, monogenic vs polygenic) of familial colorectal cancer type X.
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Affiliation(s)
- Chee-Seng Ku
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.
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Colas C, Coulet F, Svrcek M, Collura A, Fléjou JF, Duval A, Hamelin R. Lynch or not Lynch? Is that always a question? Adv Cancer Res 2012; 113:121-66. [PMID: 22429854 DOI: 10.1016/b978-0-12-394280-7.00004-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The familial cancer syndrome referred to as Lynch I and II was renamed hereditary nonpolyposis colorectal cancer (HNPCC) only to revert later to Lynch syndrome (LS). LS is the most frequent human predisposition for the development of colorectal cancer (CRC), and probably also for endometrial and gastric cancers, although it has yet to acquire a consensus name. Its estimated prevalence ranges widely from 2% to 7% of all CRCs due to the fact that tumors from patients with LS are difficult to recognize at both the clinical and molecular level. This review is based on two assumptions. First, all LS patients inherit a predisposition to develop CRC (without polyposis) and/or other tumors from the Lynch spectrum. Second, all LS patients have a germline defect in one of the DNA mismatch repair (MMR) genes. When a somatic second hit inactivates the relevant MMR gene, the consequence is instability of DNA repeat sequences such as microsatellites and the tumors are referred to as having the microsatellite instability (MSI) phenotype. However, some of the inherited predisposition to develop CRC without concurrent polyposis, termed HNPCC, is found in non-LS patients, while not all MSI tumors are from LS cases. LS tumors are therefore at the junction of inherited and MSI cases. We describe here the defining characteristics of LS tumors that differentiate them from inherited non-MSI tumors and from non-inherited MSI tumors.
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Affiliation(s)
- Chrystelle Colas
- INSERM, UMRS 938, Centre de Recherche Saint-Antoine, Equipe Instabilité des Microsatellites et Cancers, Paris, France
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Risk of colonic neoplasia after proctectomy for rectal cancer in hereditary nonpolyposis colorectal cancer. Ann Surg 2012; 255:1121-5. [PMID: 22549751 DOI: 10.1097/sla.0b013e3182565c0b] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To define the neoplastic risk in the remaining colon after proctectomy for rectal cancer in patients with hereditary nonpolyposis colorectal cancer (HNPCC). BACKGROUND The extent of surgery for rectal cancer in HNPCC is controversial. In determining which operation to perform, surgeons and patients must consider cancer risk in the remaining colon as well as functional consequences of removing the entire colorectum. The natural history of colon neoplasia in this situation is understudied and is not well-defined. METHODS A single-institution hereditary colorectal cancer database was queried for patients meeting Amsterdam criteria and with rectal cancer. Patient demographics, surgical management, and follow-up were recorded. RESULTS Fifty HNPCC patients with a primary diagnosis of rectal cancer treated by proctectcomy were included. Detailed follow-up colonoscopy data were available for 33 patients. Forty-eight high-risk adenomas developed in 13 patients (39.4%). Five patients (15.2%) developed metachronous adenocarcinoma at a median of 6 years (range 3.5-16) after proctectomy, including 3 at advanced stage. One of these patients developed a high-risk adenoma before cancer. Mean interval between the last normal colonoscopy and cancer discovery was 42 months (range 23.8-62.1) with one developing within 2 years. Thus, 17 of 33 patients (51.5%) developed high-risk adenoma or cancer after proctectomy. CONCLUSIONS Surgeons and patients need to be aware of substantial risk for metachronous neoplasia after proctectomy. Selection of operation should be individualized, but total proctocolectomy and ileoanal pouch should be strongly considered. If patients undergo proctectomy alone, close surveillance is mandatory.
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Oxentenko AS, Smyrk TC. Interval colon cancer in a Lynch syndrome patient under annual colonoscopic surveillance: a case for advanced imaging techniques? BMC Gastroenterol 2012; 12:50. [PMID: 22624972 PMCID: PMC3493301 DOI: 10.1186/1471-230x-12-50] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Accepted: 05/14/2012] [Indexed: 01/12/2023] Open
Abstract
Background Lynch syndrome confers increased risk for various malignancies, including colorectal cancer. Colonoscopic surveillance programs have led to reduced incidence of colorectal cancer and reduced mortality from colorectal cancer. Colonoscopy every 1–2 years beginning at age 20–25, or 10 years earlier than the first diagnosis of colorectal cancer in a family, with annual colonoscopy after age 40, is the recommended management for mutation carriers. Screening programs have reduced colon cancer mortality, but interval cancers may occur. Case presentation We describe a 48-year-old woman with Lynch syndrome who was found to have an adenoma with invasive colorectal cancer within one year after a normal colonoscopy. Conclusion Our patient illustrates two current concepts about Lynch syndrome: 1) adenomas are the cancer precursor and 2) such adenomas may be “aggressive,” in the sense that the adenoma progresses more readily and more rapidly to carcinoma in this setting compared to usual colorectal adenomas. Our patient’s resected tumor invaded only into submucosa and all lymph nodes were negative; in that sense, she represents a success for annual colonoscopic surveillance. Still, this case does raise the question of whether advanced imaging techniques are advisable for surveillance colonoscopy in these high-risk patients.
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Affiliation(s)
- Amy S Oxentenko
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
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Haddow JE, Palomaki GE. Screening to detect Lynch syndrome and prevent hereditary cancers in relatives. J Med Screen 2012; 18:167-8. [PMID: 22184732 DOI: 10.1258/jms.2011.011139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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