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Gharib E, Robichaud GA. From Crypts to Cancer: A Holistic Perspective on Colorectal Carcinogenesis and Therapeutic Strategies. Int J Mol Sci 2024; 25:9463. [PMID: 39273409 PMCID: PMC11395697 DOI: 10.3390/ijms25179463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2024] [Revised: 08/19/2024] [Accepted: 08/24/2024] [Indexed: 09/15/2024] Open
Abstract
Colorectal cancer (CRC) represents a significant global health burden, with high incidence and mortality rates worldwide. Recent progress in research highlights the distinct clinical and molecular characteristics of colon versus rectal cancers, underscoring tumor location's importance in treatment approaches. This article provides a comprehensive review of our current understanding of CRC epidemiology, risk factors, molecular pathogenesis, and management strategies. We also present the intricate cellular architecture of colonic crypts and their roles in intestinal homeostasis. Colorectal carcinogenesis multistep processes are also described, covering the conventional adenoma-carcinoma sequence, alternative serrated pathways, and the influential Vogelstein model, which proposes sequential APC, KRAS, and TP53 alterations as drivers. The consensus molecular CRC subtypes (CMS1-CMS4) are examined, shedding light on disease heterogeneity and personalized therapy implications.
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Affiliation(s)
- Ehsan Gharib
- Département de Chimie et Biochimie, Université de Moncton, Moncton, NB E1A 3E9, Canada
- Atlantic Cancer Research Institute, Moncton, NB E1C 8X3, Canada
| | - Gilles A Robichaud
- Département de Chimie et Biochimie, Université de Moncton, Moncton, NB E1A 3E9, Canada
- Atlantic Cancer Research Institute, Moncton, NB E1C 8X3, Canada
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2
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Danishevich A, Bilyalov A, Nikolaev S, Khalikov N, Isaeva D, Levina Y, Makarova M, Nemtsova M, Chernevskiy D, Sagaydak O, Baranova E, Vorontsova M, Byakhova M, Semenova A, Galkin V, Khatkov I, Gadzhieva S, Bodunova N. CDKN2A Gene Mutations: Implications for Hereditary Cancer Syndromes. Biomedicines 2023; 11:3343. [PMID: 38137564 PMCID: PMC10741544 DOI: 10.3390/biomedicines11123343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/10/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
Malignant neoplasms, including pancreatic cancer and melanoma, are major global health challenges. This study investigates melanoma pancreatic syndrome, a rare hereditary tumor syndrome associated with CDKN2A gene mutations. CDKN2A mutations contribute to a lifetime risk of melanoma ranging from 28% to 67%. This study reports the clinical features of six individuals with CDKN2A mutations and identifies recurrent alterations such as c.307_308del, c.159G>C and c.71G>C. It highlights the need for CDKN2A mutation testing in suspected cases of familial atypical multiple mole melanoma. Clinically significant variants show associations with melanoma and pancreatic cancer. The challenges of treating individuals with CDKN2A mutations are discussed, and the lack of specific targeted therapies is highlighted. Preclinical studies suggest a potential benefit of CDK4/6 inhibitors, although clinical trials show mixed results. This study underscores the importance of continued research into improved diagnostic and therapeutic strategies to address the complexities of hereditary cancer syndromes.
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Affiliation(s)
- Anastasiia Danishevich
- SBHI Moscow Clinical Scientific Center Named after Loginov MHD, 111123 Moscow, Russia (N.K.); (D.I.)
| | - Airat Bilyalov
- SBHI Moscow Clinical Scientific Center Named after Loginov MHD, 111123 Moscow, Russia (N.K.); (D.I.)
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia
| | - Sergey Nikolaev
- SBHI Moscow Clinical Scientific Center Named after Loginov MHD, 111123 Moscow, Russia (N.K.); (D.I.)
| | - Nodirbec Khalikov
- SBHI Moscow Clinical Scientific Center Named after Loginov MHD, 111123 Moscow, Russia (N.K.); (D.I.)
| | - Daria Isaeva
- SBHI Moscow Clinical Scientific Center Named after Loginov MHD, 111123 Moscow, Russia (N.K.); (D.I.)
| | - Yuliya Levina
- SBHI Moscow Clinical Scientific Center Named after Loginov MHD, 111123 Moscow, Russia (N.K.); (D.I.)
| | - Maria Makarova
- LLC Evogen, 115191 Moscow, Russia
- Federal State Budgetary Institution Russian Scientific Center of Roentgenoradiology, Ministry of Healthcare of the Russian Federation, 117997 Moscow, Russia
| | - Marina Nemtsova
- LLC Evogen, 115191 Moscow, Russia
- Research Centre for Medical Genetics of N.P. Bochkov, 115522 Moscow, Russia
- Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov, Ministry of Health of Russian Federation, 119991 Moscow, Russia
| | - Denis Chernevskiy
- LLC Evogen, 115191 Moscow, Russia
- FSBEI HE “Privolzhsky Research Medical University”, Ministry of Health of Russian Federation, 603950 Nizhny Novgorod, Russia
| | - Olesya Sagaydak
- LLC Evogen, 115191 Moscow, Russia
- Federal State Budgetary Institution National Medical Research Center of Cardiology Named after Academician E.I. Chazov, Ministry of Health of the Russian Federation, 121552 Moscow, Russia
| | - Elena Baranova
- LLC Evogen, 115191 Moscow, Russia
- Russian Medical Academy of Continuous Professional Education, Russia, 125993 Moscow, Russia
| | - Maria Vorontsova
- Faculty of Medicine, Lomonosov Moscow State University, 119991 Moscow, Russia
- The National Medical Research Center for Endocrinology, 117292 Moscow, Russia
| | - Mariya Byakhova
- Moscow Healthcare Department, Moscow State Budgetary Healthcare Institution Moscow City Oncological Hospital No. 1, 117152 Moscow, Russia
| | - Anna Semenova
- Moscow Healthcare Department, Moscow State Budgetary Healthcare Institution Moscow City Oncological Hospital No. 1, 117152 Moscow, Russia
| | - Vsevolod Galkin
- Moscow Healthcare Department, Moscow State Budgetary Healthcare Institution Moscow City Oncological Hospital No. 1, 117152 Moscow, Russia
| | - Igor Khatkov
- SBHI Moscow Clinical Scientific Center Named after Loginov MHD, 111123 Moscow, Russia (N.K.); (D.I.)
| | | | - Natalia Bodunova
- SBHI Moscow Clinical Scientific Center Named after Loginov MHD, 111123 Moscow, Russia (N.K.); (D.I.)
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3
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Jeong AR, Forbes K, Orosco RK, Cohen EEW. Hereditary oral squamous cell carcinoma associated with CDKN2A germline mutation: a case report. J Otolaryngol Head Neck Surg 2022; 51:5. [PMID: 35123577 PMCID: PMC8818223 DOI: 10.1186/s40463-022-00556-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 01/02/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Germline CDKN2A mutations are a well-known cause of familial atypical multiple mole melanoma (OMIM #155601) and melanoma-pancreatic cancer syndrome (OMIM #606719). Increased risk of head and neck squamous cell carcinoma (HNSCC), particularly oral squamous cell carcinoma (OSCC) in those with germline CDKN2A mutations, has been described. However, screening for HNSCC is not a routine practice in patients with CDKN2A germline mutations and these mutations are not a conventional test for HNSCC patients without obvious risk factors. CASE PRESENTATION We describe a female with no smoking history who developed oral squamous cell carcinoma at age 39 and had a complex clinical course of recurrent multifocal squamous cell carcinoma (SCC) and carcinoma in situ of the oral cavity and oropharynx. Detailed family history demonstrated that her mother was diagnosed with OSCC and melanoma in her 40 s, and her maternal grandfather was diagnosed with metastatic melanoma in his 40 s. Genetic testing of the patient and her mother revealed CDKN2A c.301G>T mutation. She was referred to genetic counseling as well as to dermatology, gastroenterology, and neurology for cancer surveillance. She was treated with resections and has no evidence of disease 3 years after diagnosis. CONCLUSIONS We report a family with a CDKN2A c.301 G>T mutation who also have significant history of OSCC, adding to the growing body of literature suggesting increased risk of HNSCC, particularly OSCC, in CDKN2A germline mutation carriers. It is important to consider CDKN2A mutation testing in familial HNSCC and young patients without obvious risk factors. Moreover, surveillance for HNSCC should be routine practice in those with a CDKN2A germline mutation.
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Affiliation(s)
- Ah-Reum Jeong
- Division of Hematology and Oncology, Department of Medicine, University of California San Diego, 3855 Health Sciences Drive, La Jolla, CA, 92093-0960, USA
| | - Kimberly Forbes
- Division of Hematology and Oncology, Department of Medicine, University of California San Diego, 3855 Health Sciences Drive, La Jolla, CA, 92093-0960, USA
| | - Ryan K Orosco
- Division of Otolaryngology, Department of Surgery, University of California San Diego, La Jolla, CA, 92093, USA.,Moores Cancer Center, University of California San Diego, La Jolla, CA, 92093, USA
| | - Ezra E W Cohen
- Division of Hematology and Oncology, Department of Medicine, University of California San Diego, 3855 Health Sciences Drive, La Jolla, CA, 92093-0960, USA. .,Moores Cancer Center, University of California San Diego, La Jolla, CA, 92093, USA.
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4
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Baijens LWJ, Walshe M, Aaltonen LM, Arens C, Cordier R, Cras P, Crevier-Buchman L, Curtis C, Golusinski W, Govender R, Eriksen JG, Hansen K, Heathcote K, Hess MM, Hosal S, Klussmann JP, Leemans CR, MacCarthy D, Manduchi B, Marie JP, Nouraei R, Parkes C, Pflug C, Pilz W, Regan J, Rommel N, Schindler A, Schols AMWJ, Speyer R, Succo G, Wessel I, Willemsen ACH, Yilmaz T, Clavé P. European white paper: oropharyngeal dysphagia in head and neck cancer. Eur Arch Otorhinolaryngol 2021; 278:577-616. [PMID: 33341909 PMCID: PMC7826315 DOI: 10.1007/s00405-020-06507-5] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 11/17/2020] [Indexed: 12/14/2022]
Abstract
PURPOSE To develop a European White Paper document on oropharyngeal dysphagia (OD) in head and neck cancer (HNC). There are wide variations in the management of OD associated with HNC across Europe. METHODS Experts in the management of specific aspects of OD in HNC across Europe were delegated by their professional medical and multidisciplinary societies to contribute to this document. Evidence is based on systematic reviews, consensus-based position statements, and expert opinion. RESULTS Twenty-four sections on HNC-specific OD topics. CONCLUSION This European White Paper summarizes current best practice on management of OD in HNC, providing recommendations to support patients and health professionals. The body of literature and its level of evidence on diagnostics and treatment for OD in HNC remain poor. This is in the context of an expected increase in the prevalence of OD due to HNC in the near future. Contributing factors to increased prevalence include aging of our European population (including HNC patients) and an increase in human papillomavirus (HPV) related cancer, despite the introduction of HPV vaccination in various countries. We recommend timely implementation of OD screening in HNC patients while emphasizing the need for robust scientific research on the treatment of OD in HNC. Meanwhile, its management remains a challenge for European professional associations and policymakers.
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Affiliation(s)
- Laura W J Baijens
- Department of Otorhinolaryngology, Head and Neck Surgery, Maastricht University Medical Center, Maastricht, The Netherlands.
- GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands.
| | - Margaret Walshe
- Department of Clinical Speech and Language Studies, Trinity College Dublin, Dublin, Ireland
| | - Leena-Maija Aaltonen
- Department of Otorhinolaryngology, Head and Neck Surgery, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Christoph Arens
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Magdeburg, Otto-von-Guericke University, Magdeburg, Germany
| | - Reinie Cordier
- Department of Special Needs Education, University of Oslo, Oslo, Norway
- School of Occupational Therapy, Social Work and Speech Pathology, Curtin University, Perth, Australia
| | - Patrick Cras
- Department of Neurology, Born Bunge Institute, Antwerp University Hospital, University of Antwerp, Antwerp, Belgium
| | - Lise Crevier-Buchman
- Voice, Speech, Swallowing Lab, Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital UVSQ and Research lab CNRS-UMR7018, Hôpital Foch, Suresnes, France
| | - Chris Curtis
- Swallows Head and Neck Cancer Charity, Blackpool, UK
| | - Wojciech Golusinski
- Department of Head and Neck Surgery, The Greater Poland Cancer Centre, Poznan University of Medical Sciences, Poznan, Poland
| | - Roganie Govender
- Head and Neck Cancer Centre, University College London Hospital, London, UK
| | - Jesper Grau Eriksen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Kevin Hansen
- Department of Otorhinolaryngology, Head and Neck Surgery, Medical Faculty, University of Cologne, Cologne, Germany
| | - Kate Heathcote
- Robert White Centre for Airway, Voice and Swallow, Poole Hospital NHS Foundation Trust, Dorset, UK
| | - Markus M Hess
- Deutsche Stimmklinik, Hamburg, Germany
- Departement of Voice, Speech and Hearing Disorders, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Sefik Hosal
- Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Atılım University, Medicana International Ankara, Ankara, Turkey
| | - Jens Peter Klussmann
- Department of Otorhinolaryngology, Head and Neck Surgery, Medical Faculty, University of Cologne, Cologne, Germany
| | - C René Leemans
- Department of Otolaryngology, Head and Neck Surgery, Amsterdam University Medical Centres, Vrije Universiteit, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Amsterdam University Medical Centres, Vrije Universiteit, Amsterdam, The Netherlands
| | - Denise MacCarthy
- Division of Restorative Dentistry and Periodontology, Faculty of Health Sciences, Trinity College Dublin, Dublin Dental University Hospital, Dublin, Ireland
| | - Beatrice Manduchi
- Department of Clinical Speech and Language Studies, Trinity College Dublin, Dublin, Ireland
| | - Jean-Paul Marie
- Department of Otorhinolaryngology, Head and Neck Surgery, Rouen University Hospital, Rouen, France
| | - Reza Nouraei
- Department of Ear Nose and Throat Surgery, The Robert White Centre for Airway Voice and Swallowing, Poole Hospital NHS Foundation Trust, University of Southampton, Southampton, UK
| | - Claire Parkes
- Department of Speech and Language Therapy, St. James's Hospital, Dublin, Ireland
| | - Christina Pflug
- Departement of Voice, Speech and Hearing Disorders, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Walmari Pilz
- Department of Otorhinolaryngology, Head and Neck Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
- MHeNs School for Mental Health and Neuroscience, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Julie Regan
- Department of Clinical Speech and Language Studies, Trinity College Dublin, Dublin, Ireland
| | - Nathalie Rommel
- Department Neurosciences, Experimental Otorhinolaryngology, Deglutology, University of Leuven, Leuven, Belgium
| | - Antonio Schindler
- Department of Biomedical and Clinical Sciences "L. Sacco", University of Milan, Milan, Italy
| | - Annemie M W J Schols
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Renee Speyer
- Department of Special Needs Education, University of Oslo, Oslo, Norway
- School of Occupational Therapy, Social Work and Speech Pathology, Curtin University, Perth, Australia
- Department of Otorhinolaryngology and Head and Neck Surgery, Leiden University Medical Centre, Leiden, The Netherlands
- Faculty of Health, School of Health and Social Development, Victoria, Australia
| | - Giovanni Succo
- Head and Neck Oncology Service, Candiolo Cancer Institute, FPO - IRCCS, Candiolo, TO, Italy
- Department of Oncology, University of Turin, Orbassano, TO, Italy
| | - Irene Wessel
- Department of Otorhinolaryngology, Head and Neck Surgery and Audiology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Anna C H Willemsen
- GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands
- Division of Medical Oncology, Department of Internal Medicine, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Taner Yilmaz
- Department of Otorhinolaryngology, Head and Neck Surgery, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Pere Clavé
- Gastrointestinal Physiology Laboratory, Hospital de Mataró, Universitat Autònoma de Barcelona, Mataró, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
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5
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Lu W, Sun J, Zhou H, Wang F, Zhao C, Li K, Fan C, Ding G, Wang J. HNF1B inhibits cell proliferation via repression of SMAD6 expression in prostate cancer. J Cell Mol Med 2020; 24:14539-14548. [PMID: 33174391 PMCID: PMC7754016 DOI: 10.1111/jcmm.16081] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/18/2020] [Accepted: 10/25/2020] [Indexed: 01/25/2023] Open
Abstract
Prostate cancer is the most common malignancy in men in developed countries. In previous study, we identified HNF1B (Hepatocyte Nuclear Factor 1β) as a downstream effector of Enhancer of zeste homolog 2 (EZH2). HNF1B suppresses EZH2‐mediated migration of two prostate cancer cell lines via represses the EMT process by inhibiting SLUG expression. Besides, HNF1B expression inhibits cell proliferation through unknown mechanisms. Here, we demonstrated that HNF1B inhibited the proliferation rate of prostate cancer cells. Overexpression of HNF1B in prostate cancer cells led to the arrest of G1 cell cycle and decreased Cyclin D1 expression. In addition, we re‐explored data from ChIP‐sequencing (ChIP‐seq) and RNA‐sequencing (RNA‐seq), and demonstrated that HNF1B repressed Cyclin D1 via direct suppression of SMAD6 expression. We also identified CDKN2A as a HNF1B‐interacting protein that would contribute to HNF1B‐mediated repression of SMAD6 expression. In summary, we provide the novel mechanisms and evidence in support HNF1B as a tumour suppressor gene for prostate cancer.
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Affiliation(s)
- Wei Lu
- School of Nursing, Suzhou Vocational Health College, Suzhou, China
| | - Jian Sun
- Department of Urology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Huihui Zhou
- Department of Pathology, Affiliated Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Fei Wang
- Department of Urology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Chunchun Zhao
- Department of Urology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Kai Li
- Department of Urology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Caibin Fan
- Department of Urology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Guanxiong Ding
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jianqing Wang
- Department of Urology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
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Zhang FL, Cao JL, Xie HY, Sun R, Yang LF, Shao ZM, Li DQ. Cancer-Associated MORC2-Mutant M276I Regulates an hnRNPM-Mediated CD44 Splicing Switch to Promote Invasion and Metastasis in Triple-Negative Breast Cancer. Cancer Res 2018; 78:5780-5792. [PMID: 30093560 DOI: 10.1158/0008-5472.can-17-1394] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 04/14/2018] [Accepted: 07/31/2018] [Indexed: 11/16/2022]
Abstract
Triple-negative breast cancer (TNBC) is the most lethal subtype of breast cancer, with a high propensity for distant metastasis and limited treatment options, yet its molecular underpinnings remain largely unknown. Microrchidia family CW-type zinc finger 2 (MORC2) is a newly identified chromatin remodeling protein whose mutations have been causally implicated in several neurologic disorders. Here, we report that a cancer-associated substitution of methionine to isoleucine at residue 276 (M276I) of MORC2 confers gain-of-function properties in the metastatic progression of TNBC. Expression of mutant MORC2 in TNBC cells increased cell migration, invasion, and lung metastasis without affecting cell proliferation and primary tumor growth compared with its wild-type counterpart. The M276I mutation enhanced binding of MORC2 to heterogeneous nuclear ribonucleoprotein M (hnRNPM), a component of the spliceosome machinery. This interaction promoted an hnRNPM-mediated splicing switch of CD44 from the epithelial isoform (CD44v) to the mesenchymal isoform (CD44s), ultimately driving epithelial-mesenchymal transition (EMT). Knockdown of hnRNPM reduced the binding of mutant MORC2 to CD44 pre-mRNA and reversed the mutant MORC2-induced CD44 splicing switch and EMT, consequently impairing the migratory, invasive, and lung metastatic potential of mutant MORC2-expressing cells. Collectively, these findings provide the first functional evidence for the M276I mutation in promoting TNBC progression. They also establish the first mechanistic connection between MORC2 and RNA splicing and highlight the importance of deciphering unique patient-derived mutations for optimizing clinical outcomes of this highly heterogeneous disease.Significance: A gain-of-function effect of a single mutation on MORC2 promotes metastasis of triple-negative breast cancer by regulating CD44 splicing. Cancer Res; 78(20); 5780-92. ©2018 AACR.
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Affiliation(s)
- Fang-Lin Zhang
- Shanghai Cancer Center and Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China.,Cancer Institute, Shanghai Medical College, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jin-Ling Cao
- Shanghai Cancer Center and Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Hong-Yan Xie
- Shanghai Cancer Center and Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China.,Cancer Institute, Shanghai Medical College, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Rui Sun
- Shanghai Cancer Center and Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Li-Feng Yang
- Shanghai Cancer Center and Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhi-Ming Shao
- Shanghai Cancer Center and Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China. .,Cancer Institute, Shanghai Medical College, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.,Department of Breast Surgery, Shanghai Medical College, Fudan University, Shanghai, China.,Key Laboratory of Breast Cancer in Shanghai, Shanghai Medical College, Fudan University, Shanghai, China
| | - Da-Qiang Li
- Shanghai Cancer Center and Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China. .,Cancer Institute, Shanghai Medical College, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.,Department of Breast Surgery, Shanghai Medical College, Fudan University, Shanghai, China.,Key Laboratory of Breast Cancer in Shanghai, Shanghai Medical College, Fudan University, Shanghai, China.,Key Laboratory of Medical Epigenetics and Metabolism, Shanghai Medical College, Fudan University, Shanghai, China
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7
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Cabanillas R, Astudillo A, Valle M, de la Rosa J, Álvarez R, Durán NS, Cadiñanos J. Novel germline CDKN2A mutation associated with head and neck squamous cell carcinomas and melanomas. Head Neck 2011; 35:E80-4. [PMID: 22083977 DOI: 10.1002/hed.21911] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/11/2011] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND The ability to identify individuals at increased risk of cancer is of immediate clinical relevance. Germline mutations in the CDKN2A locus, encoding the key tumor suppressor proteins p16/INK4A and p14/ARF, are frequently present in kindreds with hereditary cutaneous melanoma but have seldom been reported in families with genetic susceptibility to head and neck squamous cell carcinomas (HNSCC). METHODS We report the pedigree of a patient with an unusually high incidence of HNSCC and melanomas. CDKN2A mutation analysis was performed with standard capillary sequencing and multiplex ligation-dependent probe amplification. RESULTS A previously unreported germline CDKN2A mutation affecting only the p16/INK4A open reading frame, c.106delG (p.Ala36ArgfsX17), was detected in the proband. This mutation causes a premature termination codon. CONCLUSIONS Our report emphasizes the need to consider germinal CDKN2A mutations in the differential diagnosis of familial HNSCC and the importance of awareness of these tumors in carriers of CDKN2A mutations.
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Affiliation(s)
- Rubén Cabanillas
- Instituto de Medicina Oncológica y Molecular de Asturias, Asturias, Spain.
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8
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Vinarsky V, Fine RL, Assaad A, Qian Y, Chabot JA, Su GH, Frucht H. Head and neck squamous cell carcinoma in FAMMM syndrome. Head Neck 2010; 31:1524-7. [PMID: 19360740 DOI: 10.1002/hed.21050] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Germline mutations at the INK4a/p16 locus are implicated in several human cancer syndromes, including familial atypical multiple mole melanoma (FAMMM) syndrome, FAMMM-pancreatic cancer (FAMMM-PC) syndrome, and in familial head and neck cancer syndrome. METHODS We present an individual with a family history of melanoma and pancreatic cancer who had multiple dysplastic nevi, squamous cell carcinoma of the tongue at age 22, multiple melanomas, a second squamous cell cancer of the tongue at age 40, and ultimately a pancreatic cancer. RESULTS We demonstrate a germline mutation in INK4a and loss of heterozygosity at this locus in his HNSCC tissue. CONCLUSIONS This report suggests that INK4a germline mutations associated with FAMMM/FAMMM-PC can also be associated with HNSCC. We conclude that HNSCC in young individuals should prompt clinicians to obtain a family history and consider that the patient may have a germline p16 defect that could predispose them to other cancers, including melanoma and pancreatic cancer.
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Affiliation(s)
- Vladimir Vinarsky
- Department of Medicine, Columbia University, New York Presbyterian Hospital, New York, New York, USA
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9
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Abstract
Despite advances in understanding the underlying genetics, squamous cell carcinoma of the head and neck (SCCHN) remains a major health risk and one of the leading causes of mortality in the world. Current standards of treatment have significantly improved long-term survival rates of patients, but second tumors and metastases still remain the most frequent cause of high mortality in SCCHN patients. A better understanding of the underlying genetic mechanisms of SCCHN tumorigenesis will help in developing better diagnostics and, hence, better cures. In this article we will briefly outline the current state of diagnostics and treatment and our understanding of the molecular causes of SCCHN.
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Affiliation(s)
- Amit M Deshpande
- School of Dentistry and Dental Research Institute, University of California Los Angeles, CA, USA.
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10
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The p.G23S CDKN2A founder mutation in high-risk melanoma families from Central Italy. Melanoma Res 2007; 17:387-92. [DOI: 10.1097/cmr.0b013e3282f1d328] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Gillison ML. Current topics in the epidemiology of oral cavity and oropharyngeal cancers. Head Neck 2007; 29:779-92. [PMID: 17230556 DOI: 10.1002/hed.20573] [Citation(s) in RCA: 177] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Oral cancer incidence rates rose dramatically during the twentieth century in the United States and Europe, especially among individuals under the age of 60 years. Although influenced by age, sex, and country of origin, incidence trends were most strongly affected by elevated risk among individuals born after approximately 1915. This cohort effect was indicative of strong behavioral influences on oral cancer risk. In this article, associations between oral cancer risk and established behavioral risk factors including alcohol and tobacco use are reviewed. Additionally, possible associations between oral cancer risk and oral hygiene, diet, nutritional status, and sexual behavior as well as the influence of genetic factors on oral cancer risk are considered. Special emphasis is placed on evaluating possible risk differences in individuals above and below the age of 45 and in users and nonusers of alcohol and tobacco.
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Affiliation(s)
- Maura L Gillison
- Division of Viral Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland, USA.
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12
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Packer LM, Pavey SJ, Boyle GM, Stark MS, Ayub AL, Rizos H, Hayward NK. Gene expression profiling in melanoma identifies novel downstream effectors of p14ARF. Int J Cancer 2007; 121:784-90. [PMID: 17450523 DOI: 10.1002/ijc.22725] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
p14ARF is inactivated by deletions/mutations in many cancer types and can suppress cell growth by both p53-dependent and p53-independent mechanisms. To identify novel downstream effectors of p14ARF, we used gene expression profiling as a primary screening tool to select candidates for follow up validation studies using in vitro cell-based assays. Gene expression profiles of a panel of 35 melanoma cell lines with either wild-type (n = 12) or mutant (n = 23) p14ARF were compared to identify genes associated with inactivation of p14ARF. Analysis of the microarray data identified 1,316 probe sets that were significantly (p < 0.01) differentially expressed between the p14ARF wild-type and mutant cell lines. Pathway analysis of these genes showed an overrepresentation of many receptor-mediated signal transduction pathways, e.g. TGFbeta, EGF, HGF, PDGF, MAPK, Wnt and integrin pathways. A number of components of these pathways, including FLRT3, RUNX2, MIG-6 and SMURF2 were confirmed as downstream targets of p14ARF using p14ARF-inducible cell lines and RNAi. We propose that regulation of these genes may contribute to melanoma development when p14ARF function is lost.
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Affiliation(s)
- Leisl M Packer
- Oncogenomics Laboratory, Queensland Institute of Medical Research, Brisbane, Australia.
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13
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Chan PA, Duraisamy S, Miller PJ, Newell JA, McBride C, Bond JP, Raevaara T, Ollila S, Nyström M, Grimm AJ, Christodoulou J, Oetting WS, Greenblatt MS. Interpreting missense variants: comparing computational methods in human disease genes CDKN2A, MLH1, MSH2, MECP2, and tyrosinase (TYR). Hum Mutat 2007; 28:683-93. [PMID: 17370310 DOI: 10.1002/humu.20492] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The human genome contains frequent single-basepair variants that may or may not cause genetic disease. To characterize benign vs. pathogenic missense variants, numerous computational algorithms have been developed based on comparative sequence and/or protein structure analysis. We compared computational methods that use evolutionary conservation alone, amino acid (AA) change alone, and a combination of conservation and AA change in predicting the consequences of 254 missense variants in the CDKN2A (n = 92), MLH1 (n = 28), MSH2 (n = 14), MECP2 (n = 30), and tyrosinase (TYR) (n = 90) genes. Variants were validated as either neutral or deleterious by curated locus-specific mutation databases and published functional data. All methods that use evolutionary sequence analysis have comparable overall prediction accuracy (72.9-82.0%). Mutations at codons where the AA is absolutely conserved over a sufficient evolutionary distance (about one-third of variants) had a 91.6 to 96.8% likelihood of being deleterious. Three algorithms (SIFT, PolyPhen, and A-GVGD) that differentiate one variant from another at a given codon did not significantly improve predictive value over conservation score alone using the BLOSUM62 matrix. However, when all four methods were in agreement (62.7% of variants), predictive value improved to 88.1%. These results confirm a high predictive value for methods that use evolutionary sequence conservation, with or without considering protein structural change, to predict the clinical consequences of missense variants. The methods can be generalized across genes that cause different types of genetic disease. The results support the clinical use of computational methods as one tool to help interpret missense variants in genes associated with human genetic disease.
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Affiliation(s)
- Philip A Chan
- Vermont Cancer Center, University of Vermont, Burlington, Vermont, USA
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14
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Abstract
The incidence of cutaneous melanoma has increased worldwide in the last 20 years. Research on potential risk factors, both environmental and genetic, has led us to some new and interesting conclusions. Ultraviolet radiation is clearly the main environmental risk factor for melanoma, but its relationship is complex and controversial. With regard to genetic factors, the discovery of two types of genes was a great advance in further understanding the biology of the melanocyte. CDKN2A (p16) is the prototype of the high-penetrance, low-prevalence gene related to melanoma. This gene has been studied in some families in which several members have been diagnosed with melanoma. In the general population with non-familial melanoma, low-penetrance, high-prevalence genes such as MC1R seem to be more interesting. Studies on the MC1R gene have not only shown its importance in skin and hair pigmentation, but also in the development of melanoma. Functional studies on CDKN2A and MC1R have led us to new and important conclusions. The analysis of data from studies on families, twins and control cases, with the collaboration of several countries, will lead us to new discoveries. For the primary and secondary prevention of this tumor, we must promote public health campaigns on the dangers of sun exposure and the identification of individuals at high risk.
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Affiliation(s)
- José A Avilés
- Servicio de Dermatología, Hospital General Universitario Gregorio Marañón, Madrid, España.
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15
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Lang J, Hayward N, Goldgar D, Tsao H, Hogg D, Palmer J, Stark M, Tobias ES, MacKie R. The M53I mutation inCDKN2A is a founder mutation that predominates in melanoma patients with Scottish ancestry. Genes Chromosomes Cancer 2006; 46:277-87. [PMID: 17171691 DOI: 10.1002/gcc.20410] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Germline mutations in the tumor suppressor gene CDKN2A have been shown to predispose to cutaneous malignant melanoma. The M53I mutation is the most common CDKN2A mutation identified in Scottish melanoma patients and is also found in a small number of families in other countries. The aim of this study was to determine whether the occurrence of this mutation is due to a common ancestor originating from Scotland, and if so, to estimate how long ago the mutation arose. We examined 18 families carrying the M53I mutation: six from Scotland, five from Canada, four from Australia, and three from America. Haplotypes derived from segregation of seven informative microsatellite markers flanking CDKN2A were constructed in each family. Our findings show that 14 of 18 families carry a common ancestral haplotype on which the mutation arose approximately 88 generations ago (1-LOD-unit support interval 44-198 generations). This haplotype is very rare in controls, which supports the idea that it is a common founder mutation haplotype. The four M53I families that do not share the consensus haplotype may in fact have arisen from the same founder, but this is potentially obscured by presumed replication slippage for some of the microsatellite markers tested.
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16
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Affiliation(s)
- V Bataille
- Dermatology Department, West Herts NHS Trust, Hemel Hempstead General Hospital, Hillfield Road, Herts HP2 4AD, Angleterre.
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17
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Huang J, El-Gamil M, Dudley ME, Li YF, Rosenberg SA, Robbins PF. T cells associated with tumor regression recognize frameshifted products of the CDKN2A tumor suppressor gene locus and a mutated HLA class I gene product. THE JOURNAL OF IMMUNOLOGY 2004; 172:6057-64. [PMID: 15128789 PMCID: PMC2305724 DOI: 10.4049/jimmunol.172.10.6057] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The dramatic tumor regression observed following adoptive T cell transfer in some patients has led to attempts to identify novel Ags to understand the nature of these responses. Nearly complete regression of multiple metastatic melanoma lesions was observed in patient 1913 following adoptive transfer of autologous tumor-infiltrating lymphocytes. The autologous 1913 melanoma cell line expressed a mutated HLA-A11 class I gene product that was recognized by the bulk tumor-infiltrating lymphocytes as well as a dominant T cell clone derived from this line. A second dominant T cell clone, T1D1, did not recognize the mutated HLA-A11 product, but recognized an allogeneic melanoma cell line that shared expression of HLA-A11 with the parental tumor cell line. Screening of an autologous melanoma cDNA library with clone T1D1 T cells in a cell line expressing the mutated HLA-A11 gene product resulted in the isolation of a p14ARF transcript containing a 2-bp deletion in exon 2. The T cell epitope recognized by T1D1, which was encoded within the frameshifted region of the deleted p14ARF transcript, was also generated from frameshifted p14ARF or p16INK4a transcripts that were isolated from two additional melanoma cell lines. The results of monitoring studies indicated that T cell clones reactive with the mutated HLA-A11 gene product and the mutated p14ARF product were highly represented in the peripheral blood of patient 1913 1 wk following adoptive transfer, indicating that they may have played a role in the nearly complete tumor regression that was observed following this treatment.
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MESH Headings
- Adult
- Amino Acid Sequence
- Base Sequence
- Cell Line, Tumor
- Clone Cells
- Cyclin-Dependent Kinase Inhibitor p16/genetics
- Cyclin-Dependent Kinase Inhibitor p16/immunology
- Cyclin-Dependent Kinase Inhibitor p16/metabolism
- Epitopes, T-Lymphocyte/genetics
- Epitopes, T-Lymphocyte/isolation & purification
- Female
- Frameshift Mutation/immunology
- Genetic Markers
- HLA-A Antigens/genetics
- HLA-A Antigens/immunology
- HLA-A Antigens/metabolism
- HLA-A11 Antigen
- Humans
- Immunotherapy, Adoptive
- Lymphocytes, Tumor-Infiltrating/immunology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Lymphocytes, Tumor-Infiltrating/transplantation
- Melanoma, Experimental/immunology
- Melanoma, Experimental/secondary
- Melanoma, Experimental/therapy
- Molecular Sequence Data
- Open Reading Frames/immunology
- Remission Induction
- T-Lymphocyte Subsets/immunology
- T-Lymphocyte Subsets/metabolism
- T-Lymphocyte Subsets/transplantation
- Tumor Suppressor Protein p14ARF/genetics
- Tumor Suppressor Protein p14ARF/isolation & purification
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Affiliation(s)
| | | | | | | | | | - Paul F. Robbins
- Address correspondence and reprint requests to Dr. Paul F. Robbins, Surgery Branch, National Cancer Institute, National Institutes of Health, Building 10, Room 2B42, Bethesda, MD 20892-1502. E-mail address:
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18
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Abstract
Melanoma incidence has risen in many Caucasians populations over the last 20 years and research on the potential environmental and genetic risk factors has led to some interesting new findings but also to many more questions. The relationship between melanoma and ultraviolet radiation is complex and this area of research is controversial especially regarding the use of sunbeds and sunscreens. In terms of genetic factors, the discovery of two genes CDKN2A and CDK4 has been a great advance with more understanding of melanocyte biology in relation to defects in senescence. For phenotypic risk factors such as fair skin and high numbers of naevi, the role of genetic factors is clearly evident but these traits are complex and the discovery of genes involved in skin pigmentation and naevi formation is not an easy task. Research on the MC1R gene has not only shown the importance of this gene in hair and skin pigmentation but also in senescence and immunity. Functional studies involving CDKN2A and MC1R are leading to important new findings. There is also some hope regarding the use of micro-arrays in helping to dissect many genetic events in melanoma. The collection of large datasets including family, twin and case-control studies as well as tumour banks with collaborations between countries will hopefully lead to more discoveries. For the primary and secondary prevention of this tumour, efforts need to be sustained in public health campaigns on sun exposure and the recognition of individuals at high risk.
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Affiliation(s)
- V Bataille
- Dermatology and Twin Research and Genetic Epidemiology Unit, St Thomas Hospital, Lambeth Palace Road, London SE1 7EH, UK.
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19
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Abstract
Predisposition to melanoma is genetically heterogeneous. Two high penetrance susceptibility genes, CDKN2A and CDK4, have so far been identified and mapping is ongoing to localize and identify others. With the advent of a catalogue of millions of potential DNA polymorphisms, attention is now also being focused on identification of genes that confer a more modest contribution to melanoma risk, such as those encoding proteins involved in pigmentation, DNA repair, cell growth and differentiation or detoxification of metabolites. One such pigmentation gene, MC1R, has not only been found to be a low penetrance melanoma gene but has also been shown to act as a genetic modifier of melanoma risk in individuals carrying CDKN2A mutations. Most recently, an environmental agent, ultraviolet radiation, has also been established as a modifier of melanoma risk in CDKN2A mutation carriers. Hence, melanoma is turning out to be an excellent paradigm for studying gene-gene and gene-environment interactions.
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Affiliation(s)
- Nicholas K Hayward
- Queensland Institute of Medical Research, 300 Herston Rd, Herston, QLD 4029, Australia.
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20
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Jefferies S, Edwards SM, Hamoudi RA, A'Hern R, Foulkes W, Goldgar D, Eeles R. No germline mutations in CDKN2A (p16) in patients with squamous cell cancer of the head and neck and second primary tumours. Br J Cancer 2001; 85:1383-6. [PMID: 11720478 PMCID: PMC2375247 DOI: 10.1054/bjoc.2001.2068] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
There is increasing evidence that predisposition to some cancers has a genetic component. There is a high incidence of loss of heterozygosity on chromosome 9, in the region of tumour suppressor gene, CDKN2A (also known as p16), in sporadic squamous cell cancer of the head and neck (SCCHN). To investigate the possibility that CDKN2A may be involved in the inherited susceptibility to SCCHN, the 3 coding exons of CDKN2A were sequenced in 40 patients who had developed a second primary cancer after an index squamous cell cancer of the head and neck. No mutations were found and we conclude that CDKN2A mutations do not play a major role in cancer susceptibility in this group.
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Affiliation(s)
- S Jefferies
- Cancer Genetics, Institute of Cancer Research, 15 Cotswold Rd, Sutton, Surrey
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21
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Grammatico P, Binni F, Eibenschutz L, De Bernardo C, Grammatico B, Rinaldi R, De Simone P, Catricalà C. CDKN2A novel mutation in a patient from a melanoma-prone family. Melanoma Res 2001; 11:447-9. [PMID: 11595880 DOI: 10.1097/00008390-200110000-00002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
CDKN2A is thought to be the main candidate gene for melanoma susceptibility. Deletion or mutations in the CDKN2A gene may produce an imbalance between functional p16 and cyclin D, causing abnormal cell growth. We here describe a novel mutation consisting of a 1 bp deletion at nucleotide position 201 (codon 67) (CACGGcGCG) resulting in a truncated protein (stop codon 145). The patient, a female subject from a melanoma-prone family, presented at the age of 47 years with a superficial spreading melanoma of the trunk. Her father had colon cancer at the age of 43 years and melanoma at 63 years, her uncle suffered from gastric cancer, and her grandfather had laryngeal cancer.
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Affiliation(s)
- P Grammatico
- Medical Genetics, University of Rome 'La Sapienza', c/o Osp. L. Spallanzani, V. Portuense n. 292, 00149 Rome, Italy.
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22
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Abstract
This review aims to explore the genetic mechanisms involved in the development of squamous cell carcinoma of the head and neck (SCCHN). The epidemiology of SCCHN is complex due to the multiple molecular events that occur and the number of environmental agents to which individuals may have been exposed. It is clear that the major aetiological agents are tobacco and alcohol but it is also becoming apparent that other factors such as an underlying genetic susceptibility may also be important. An inherited predisposition may occur as a consequence of increased mutagen sensitivity, inability to metabolize carcinogens or pro-carcinogens or repair DNA damage. The current advances in understanding of the roles of somatic mutations, viral infection and angiogenesis are discussed. The final part of this review focuses on the way in which molecular changes may be used for prevention, early diagnosis and treatment of SCCHN.
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Affiliation(s)
- S Jefferies
- Section of Cancer Genetics, Institute of Cancer Research, Sutton, Surrey, UK.
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23
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Scully C, Field JK, Tanzawa H. Genetic aberrations in oral or head and neck squamous cell carcinoma 3: clinico-pathological applications. Oral Oncol 2000; 36:404-13. [PMID: 10964046 DOI: 10.1016/s1368-8375(00)00023-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The molecular changes in malignant epithelium in the head and neck offer possibilities for the development of diagnostic, prognostic and other markers. This article reviews recent developments in this field.
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Affiliation(s)
- C Scully
- Eastman Dental Institute for Oral Health Care Sciences, University College London, University of London, 256 Gray's Inn Road, WC1X 8LD, London, UK.
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24
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Abstract
Like many other cancers, melanoma has a significant genetic basis. However, its genetic pathways may involve multiple genes with probable interactions with sun exposure. Germline mutations in p16 or CDKN2A are found in a significant percentage of relatively rare melanoma families but p16 mutations are uncommon in sporadic tumours. p16 may still be involved by other mechanisms of inactivation; however, it is clear that other melanoma genes remain to be discovered. Family, case-control, twin and sib-pair analyses as well as DNA chip technology may shed some light on genes involved in melanocytic differentiation and skin pigmentation. Recent public health campaigns have not been very successful in changing behaviour regarding tanning, and the relationship between sun exposure and melanoma is very complex. With the understanding of genetic alterations leading to this tumour, follow-up strategies and behavioural interventions may be more specifically designed to target high risk groups.
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Affiliation(s)
- V Bataille
- Dermatology Department and Twin Research and Genetic Epidemiology Unit, St Thomas' Hospital, London, UK.
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25
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Borg A, Sandberg T, Nilsson K, Johannsson O, Klinker M, Måsbäck A, Westerdahl J, Olsson H, Ingvar C. High frequency of multiple melanomas and breast and pancreas carcinomas in CDKN2A mutation-positive melanoma families. J Natl Cancer Inst 2000; 92:1260-6. [PMID: 10922411 DOI: 10.1093/jnci/92.15.1260] [Citation(s) in RCA: 226] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND : Inherited mutations in the CDKN2A tumor suppressor gene, which encodes the p16(INK4a) protein, and in the cyclin-dependent kinase 4 (CDK4) gene confer susceptibility to cutaneous malignant melanoma. We analyzed families with two or more cases of melanoma for germline mutations in CDKN2A and CDK4 to elucidate the contribution of these gene defects to familial malignant melanoma and to the occurrence of other cancer types. METHODS : The entire CDKN2A coding region and exon 2 of the CDK4 gene of an affected member of each of 52 families from southern Sweden with at least two cases of melanoma in first- or second-degree relatives were screened for mutations by use of polymerase chain reaction-single-strand conformation polymorphism analysis. Statistical tests were two-sided. RESULTS : CDKN2A mutations were found in 10 (19%) of the 52 families. Nine families carried an identical alteration consisting of the insertion of arginine at position 113 of p16(INK4a), and one carried a missense mutation, in which the valine at position 115 was replaced with a glycine. The 113insArg mutant p16(INK4a) was unable to bind cdk4 and cdk6 in an in vitro binding assay. Six of the 113insArg families had at least one member with multiple primary melanomas; the 113insArg families also had a high frequency of other malignancies-in particular, breast cancer (a total of eight cases compared with the expected 2.1; P =.0014) and pancreatic cancer (a total of six cases compared with the expected 0.16; P<.0001). Families with breast cancer also had a propensity for multiple melanomas in females, suggesting that a sex-dependent factor may modify the phenotypic expression of CDKN2A alterations. CONCLUSIONS : Our findings confirm that the majority of CDKN2A-associated melanoma families in Sweden are due to a single founder mutation. They also show that families with the CDKN2A 113insArg mutation have an increased risk not only of multiple melanomas and pancreatic carcinoma but also of breast cancer.
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Affiliation(s)
- A Borg
- Department of Oncology, University Hospital, Lund, Sweden
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26
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Pollock PM, Spurr N, Bishop T, Newton-Bishop J, Gruis N, van der Velden PA, Goldstein AM, Tucker MA, Foulkes WD, Barnhill R, Haber D, Fountain J, Hayward NK. Haplotype analysis of two recurrent CDKN2A mutations in 10 melanoma families: evidence for common founders and independent mutations. Hum Mutat 2000; 11:424-31. [PMID: 9603434 DOI: 10.1002/(sici)1098-1004(1998)11:6<424::aid-humu2>3.0.co;2-2] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Germ-line mutations in CDKN2A have been shown to predispose to cutaneous malignant melanoma. We have identified 2 new melanoma kindreds which carry a duplication of a 24bp repeat present in the 5' region of CDKN2A previously identified in melanoma families from Australia and the United States. This mutation has now been reported in 5 melanoma families from 3 continents: Europe, North America, and Australasia. The M53I mutation in exon 2 of CDKN2A has also been documented in 5 melanoma families from Australia and North America. The aim of this study was to determine whether the occurrence of the mutations in these families from geographically diverse populations represented mutation hotspots within CDKN2A or were due to common ancestors. Haplotypes of 11 microsatellite markers flanking CDKN2A were constructed in 5 families carrying the M53I mutation and 5 families carrying the 24bp duplication. There were some differences in the segregating haplotypes due primarily to recombinations and mutations within the short tandem-repeat markers; however, the data provide evidence to indicate that there were at least 3 independent 24bp duplication events and possibly only 1 original M53I mutation. This is the first study to date which indicates common founders in melanoma families from different continents.
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Affiliation(s)
- P M Pollock
- Queensland Cancer Fund Research Unit, Joint Experimental Oncology Program, Queensland Institute of Medical Research, Brisbane, Australia
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27
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Piepkorn M. Melanoma genetics: an update with focus on the CDKN2A(p16)/ARF tumor suppressors. J Am Acad Dermatol 2000; 42:705-22; quiz 723-6. [PMID: 10775844 DOI: 10.1067/mjd.2000.104687] [Citation(s) in RCA: 93] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
UNLABELLED Investigative interest in atypical nevi and familial melanoma has contributed to the identification of several candidate melanoma loci within the human genome. Molecular defects in both tumor suppressor genes and oncogenes have been pathogenically linked to melanoma in recent studies. Of the loci currently characterized, the major gene resides on chromosome 9p and encodes a tumor suppressor designated p16. This gene, which is also known as CDKN2A, is either mutated or deleted in a large majority of melanoma cell lines, as well as in many uncultured melanoma cells and in the germline of melanoma kindreds. A novel aspect of the p16 locus is that it encodes not just one but two separate gene products that are transcribed in alternative reading frames. Both products function as negative regulators of cell cycle progression. The p16 protein itself executes its effects by competitively inhibiting cyclin-dependent kinase 4, which is a factor necessary for cellular progression through a major regulatory transition of the cell division cycle. Inherited and acquired deletions or point mutations in the p16 gene increase the likelihood that potentially mutagenic DNA damage will escape repair before cell division. Notably, the second product of the locus, ARF (for alternative reading frame), regulates cell growth through independent effects on the p53 pathway. Although there is little evidence that ARF by itself is involved in the pathogenesis of melanoma, deletions at the p16 locus disable two separate pathways that control cell growth. These recent advances open up the possibility of genetic testing for melanoma susceptibility in the setting of familial melanoma and suggest novel therapeutic strategies for melanoma based on gene therapy or small molecule mimicry targeted to the correction of defects in the p16 regulatory pathway. (J Am Acad Dermatol 2000;42:705-22.) LEARNING OBJECTIVE At the conclusion of this learning activity, participants should be familiar with the historical aspects of melanoma genetics and should have a greater understanding of the CDKN2A(p16)/ARF tumor suppressor genes.
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Affiliation(s)
- M Piepkorn
- Division of Dermatology, Department of Medicine and Department of Pathology, University of Washington School of Medicine, Seattle 98195-6524, USA.
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28
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Lal G, Liu L, Hogg D, Lassam NJ, Redston MS, Gallinger S. Patients with both pancreatic adenocarcinoma and melanoma may harbor germlineCDKN2A mutations. Genes Chromosomes Cancer 2000. [DOI: 10.1002/(sici)1098-2264(200004)27:4<358::aid-gcc4>3.0.co;2-o] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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29
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Abstract
Germline mutations of the CDKN2A(p16INK4A) tumor suppressor gene predispose patients to melanoma and pancreatic carcinoma. In contrast, mutations of the murine CDKN2A gene predispose BALB/c mice to pristane-induced plasmacytoma. We describe here a family in which a germline mutation of CDKN2A is present in 4 individuals who developed melanoma as well as in a fifth family member who is suffering from multiple myeloma. To determine whether the CDKN2A mutation predisposed the myeloma patient to her disease, we carried out loss of heterozygosity studies on sorted bone marrow from this individual and observed loss of the wild type CDKN2A allele in the malignant plasma cells. We suggest that germline mutations of CDKN2A may predispose individuals to a wider variety of malignancy than has been hitherto reported, but that the expression of these cancers may depend heavily on the genetic background of the patient.
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30
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Ruas M, Brookes S, McDonald NQ, Peters G. Functional evaluation of tumour-specific variants of p16INK4a/CDKN2A: correlation with protein structure information. Oncogene 1999; 18:5423-34. [PMID: 10498896 DOI: 10.1038/sj.onc.1202918] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Inherited mutations in the CDKN2A/INK4a/MTS1 tumour suppressor gene on chromosome 9p21 are associated with familial predisposition to melanoma and other tumour types. Nonsense and missense mutations are also found in a variety of sporadic cancers, and over 140 sequence variants have already been recorded in the literature. In assessing the relevance of these variants and for counselling members of affected families, it is important to distinguish inactivating mutations from harmless polymorphisms. Existing functional assays have frequently reached conflicting conclusions and no single test appears adequate. Here we evaluate a number of alternatives including a novel assay based on retroviral delivery of p16INK4a cDNAs into human diploid fibroblasts. Among the 17 sequence variants analysed, three distinct categories can be distinguished: those that abrogate the binding of p16INK4a to CDK4 and CDK6, those that alter the properties of the protein without preventing it from interacting with CDKs, and those that have no discernible effect on protein function. These distinctions can be rationalized by considering the impact of the amino acid changes on the three-dimensional structure of the protein.
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Affiliation(s)
- M Ruas
- Imperial Cancer Research Fund, PO Box 123, 44 Lincoln's Inn Fields, London WC2A 3PX, UK
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31
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Abstract
CDKN2A appears to be the major melanoma susceptibility gene, and is also mutated/deleted in sporadic tumours of various types including melanoma. Thus far most approaches to assessing the functionality of mutations in this gene have used in vitro methods such as CDK4 binding and kinase inhibition assays, with sometimes disparate conclusions about functional significance of some variants between studies. We have used a melanoma cell line (MM96L) with no functional p16, as the basis for a "semi-in vivo" transfection-based assay for exogenous p16 functionality based on the growth parameters of the cells and the behaviour of variant proteins after transfection of different CDKN2A cDNAs. Colony counts performed on these transfectants revealed that all but the wild type, + 24 bp ad A148T variants have a diminished ability to inhibit cell growth. All other variants detected either constitutionally in familial melanoma patients (I49T, R87P, G101W and V126D) or somatically in melanomas (N71S, and P81L), appeared functionally impaired in this assay. This diminution of function was independent of CDK4 and CDK6 binding ability. Furthermore, the predominant localization of these variants within the cell was different from that of wt p16. This mislocalization may provide an explanation for their lack of function, or alternatively, it may also be an indicator that the cells are processing unstable, misfolded p16 proteins. This novel assay for assessment of functionality of p16 variants may better reflect the role of some of these mutations in vivo, and as such is a useful adjunct to other in vitro assays.
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Affiliation(s)
- G J Walker
- Joint Experimental Oncology Program, Queensland Institute of Medical Research, Royal Brisbane Hospital, Herston, Australia
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Aitken J, Welch J, Duffy D, Milligan A, Green A, Martin N, Hayward N. CDKN2A variants in a population-based sample of Queensland families with melanoma. J Natl Cancer Inst 1999; 91:446-52. [PMID: 10070944 DOI: 10.1093/jnci/91.5.446] [Citation(s) in RCA: 157] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Mutations in the CDKN2A gene confer susceptibility to cutaneous malignant melanoma (CMM); however, the population incidence of such mutations is unknown. Polymorphisms in CDKN2A have also been described, but it is not known whether they influence melanoma risk. We investigated the association of CDKN2A mutations and polymorphisms with melanoma risk in a population-based sample of families ascertained through probands with melanoma. METHODS The 482 Queensland, Australia, families in our sample were characterized previously as having high, intermediate, or low family risk of CMM. Unrelated individuals (n = 200 families/individuals) drawn from the Australian Twin Registry served as control subjects. For individuals in the high-risk group, the entire CDKN2A gene coding region was screened for mutations by use of the polymerase chain reaction, agarose gel electrophoresis, allele-specific oligonucleotide (ASO) hybridization, and single-strand conformation polymorphism analysis. The intermediate- and low-risk families and control subjects were analyzed by ASO hybridization for a total of six recurring mutations as well as for polymorphisms at nucleotides (Nts) 442, 500, and 540. RESULTS CDKN2A mutations were found only in the high-risk families (nine [10.3%] of 87). The prevalence of the Nt500G (guanosine) polymorphism increased linearly with increasing familial risk (two-sided P = .02) and was highest in the nine (primarily Celtic) families with CDKN2A mutations. After adjustment for ethnic origin, the relationship between risk group and the frequency of the Nt500G allele was weakened (P = .25); however, there was no relationship between ethnic origin and Nt500-polymorphism frequency among the control subjects. CONCLUSIONS CDKN2A mutations are rare in this population (approximately 0.2% of all melanoma cases in Queensland) and appear to be associated with melanoma in only the most affected families. The Nt500G allele appears to be associated with familial risk, but this association probably reflects Celtic ancestry.
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Affiliation(s)
- J Aitken
- Queensland Institute of Medical Research, Brisbane, Australia
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Jefferies S, Eeles R, Goldgar D, A'Hern R, Henk JM, Gore M. The role of genetic factors in predisposition to squamous cell cancer of the head and neck. Br J Cancer 1999; 79:865-7. [PMID: 10070882 PMCID: PMC2362666 DOI: 10.1038/sj.bjc.6690138] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
© 1999 Cancer Research Campaign
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Affiliation(s)
- S Jefferies
- Institute of Cancer Research and the Royal Marsden Hospital, Sutton, Surrey, UK.
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Ruas M, Peters G. The p16INK4a/CDKN2A tumor suppressor and its relatives. BIOCHIMICA ET BIOPHYSICA ACTA 1998; 1378:F115-77. [PMID: 9823374 DOI: 10.1016/s0304-419x(98)00017-1] [Citation(s) in RCA: 338] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- M Ruas
- Imperial Cancer Research Fund, London, UK
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