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Khani M, Cerquera-Cleves C, Kekenadze M, Crea PAW, Singleton AB, Bandres-Ciga S. Towards a Global View of Parkinson's Disease Genetics. Ann Neurol 2024; 95:831-842. [PMID: 38557965 PMCID: PMC11060911 DOI: 10.1002/ana.26905] [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: 12/06/2023] [Revised: 02/22/2024] [Accepted: 02/25/2024] [Indexed: 04/04/2024]
Abstract
Parkinson's disease (PD) is a global health challenge, yet historically studies of PD have taken place predominantly in European populations. Recent genetics research conducted in non-European populations has revealed novel population-specific genetic loci linked to PD risk, highlighting the importance of studying PD globally. These insights have broadened our understanding of PD etiology, which is crucial for developing disease-modifying interventions. This review comprehensively explores the global genetic landscape of PD, emphasizing the scientific rationale for studying underrepresented populations. It underscores challenges, such as genotype-phenotype heterogeneity and inclusion difficulties for non-European participants, emphasizing the ongoing need for diverse and inclusive research in PD. ANN NEUROL 2024;95:831-842.
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Affiliation(s)
- Marzieh Khani
- Center for Alzheimer’s and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Catalina Cerquera-Cleves
- Pontificia Universidad Javeriana, San Ignacio Hospital, Neurology Unit, Bogotá, Colombia
- CHU de Québec Research Center, Axe Neurosciences, Laval University. Quebec City, Canada
| | - Mariam Kekenadze
- Tbilisi State Medical University, Tbilisi, 0141, Georgia
- University College London, Queen Square Institute of Neurology , WC1N 3BG, London, UK
| | - Peter A. Wild Crea
- Center for Alzheimer’s and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Andrew B. Singleton
- Center for Alzheimer’s and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Sara Bandres-Ciga
- Center for Alzheimer’s and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
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Follett J, Guenther D, Xoi L, Amouri R, Ben Sassi S, Hentati F, Farrer MJ. Genetic Modifiers of LRRK2 Parkinson's Disease: A Replication Study in Arab-Berbers. Mov Disord 2024; 39:751-753. [PMID: 38291980 DOI: 10.1002/mds.29735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 01/16/2024] [Indexed: 02/01/2024] Open
Affiliation(s)
- Jordan Follett
- Department of Neurology, University of Florida, Gainesville, Florida, USA
| | - Dylan Guenther
- Department of Neurology, University of Florida, Gainesville, Florida, USA
| | - Leyna Xoi
- Department of Neurology, University of Florida, Gainesville, Florida, USA
| | - Rim Amouri
- Mongi Ben Hamida National Institute of Neurology, La Rabta, Tunisia
| | - Samia Ben Sassi
- Mongi Ben Hamida National Institute of Neurology, La Rabta, Tunisia
| | - Faycel Hentati
- Mongi Ben Hamida National Institute of Neurology, La Rabta, Tunisia
| | - Matthew J Farrer
- Department of Neurology, University of Florida, Gainesville, Florida, USA
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Lim SY, Klein C. Parkinson's Disease is Predominantly a Genetic Disease. JOURNAL OF PARKINSON'S DISEASE 2024; 14:467-482. [PMID: 38552119 DOI: 10.3233/jpd-230376] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
The discovery of a pathogenic variant in the alpha-synuclein (SNCA) gene in the Contursi kindred in 1997 indisputably confirmed a genetic cause in a subset of Parkinson's disease (PD) patients. Currently, pathogenic variants in one of the seven established PD genes or the strongest known risk factor gene, GBA1, are identified in ∼15% of PD patients unselected for age at onset and family history. In this Debate article, we highlight multiple avenues of research that suggest an important - and in some cases even predominant - role for genetics in PD aetiology, including familial clustering, high rates of monogenic PD in selected populations, and complete penetrance with certain forms. At first sight, the steep increase in PD prevalence exceeding that of other neurodegenerative diseases may argue against a predominant genetic etiology. Notably, the principal genetic contribution in PD is conferred by pathogenic variants in LRRK2 and GBA1 and, in both cases, characterized by an overall late age of onset and age-related penetrance. In addition, polygenic risk plays a considerable role in PD. However, it is likely that, in the majority of PD patients, a complex interplay of aging, genetic, environmental, and epigenetic factors leads to disease development.
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Affiliation(s)
- Shen-Yang Lim
- The Mah Pooi Soo and Tan Chin Nam Centre for Parkinson's and Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
- Department of Medicine, Faculty of Medicine, Division of Neurology, University of Malaya, Kuala Lumpur, Malaysia
| | - Christine Klein
- Institute of Neurogenetics, University of Luebeck, Luebeck, Germany
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Vollstedt EJ, Madoev H, Aasly A, Ahmad-Annuar A, Al-Mubarak B, Alcalay RN, Alvarez V, Amorin I, Annesi G, Arkadir D, Bardien S, Barker RA, Barkhuizen M, Basak AN, Bonifati V, Boon A, Brighina L, Brockmann K, Carmine Belin A, Carr J, Clarimon J, Cornejo-Olivas M, Correia Guedes L, Corvol JC, Crosiers D, Damásio J, Das P, de Carvalho Aguiar P, De Rosa A, Dorszewska J, Ertan S, Ferese R, Ferreira J, Gatto E, Genç G, Giladi N, Gómez-Garre P, Hanagasi H, Hattori N, Hentati F, Hoffman-Zacharska D, Illarioshkin SN, Jankovic J, Jesús S, Kaasinen V, Kievit A, Klivenyi P, Kostic V, Koziorowski D, Kühn AA, Lang AE, Lim SY, Lin CH, Lohmann K, Markovic V, Martikainen MH, Mellick G, Merello M, Milanowski L, Mir P, Öztop-Çakmak Ö, Pimentel MMG, Pulkes T, Puschmann A, Rogaeva E, Sammler EM, Skaalum Petersen M, Skorvanek M, Spitz M, Suchowersky O, Tan AH, Termsarasab P, Thaler A, Tumas V, Valente EM, van de Warrenburg B, Williams-Gray CH, Wu RM, Zhang B, Zimprich A, Solle J, Padmanabhan S, Klein C. Establishing an online resource to facilitate global collaboration and inclusion of underrepresented populations: Experience from the MJFF Global Genetic Parkinson's Disease Project. PLoS One 2023; 18:e0292180. [PMID: 37788254 PMCID: PMC10547150 DOI: 10.1371/journal.pone.0292180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 09/14/2023] [Indexed: 10/05/2023] Open
Abstract
Parkinson's disease (PD) is the fastest-growing neurodegenerative disorder, currently affecting ~7 million people worldwide. PD is clinically and genetically heterogeneous, with at least 10% of all cases explained by a monogenic cause or strong genetic risk factor. However, the vast majority of our present data on monogenic PD is based on the investigation of patients of European White ancestry, leaving a large knowledge gap on monogenic PD in underrepresented populations. Gene-targeted therapies are being developed at a fast pace and have started entering clinical trials. In light of these developments, building a global network of centers working on monogenic PD, fostering collaborative research, and establishing a clinical trial-ready cohort is imperative. Based on a systematic review of the English literature on monogenic PD and a successful team science approach, we have built up a network of 59 sites worldwide and have collected information on the availability of data, biomaterials, and facilities. To enable access to this resource and to foster collaboration across centers, as well as between academia and industry, we have developed an interactive map and online tool allowing for a quick overview of available resources, along with an option to filter for specific items of interest. This initiative is currently being merged with the Global Parkinson's Genetics Program (GP2), which will attract additional centers with a focus on underrepresented sites. This growing resource and tool will facilitate collaborative research and impact the development and testing of new therapies for monogenic and potentially for idiopathic PD patients.
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Affiliation(s)
| | - Harutyun Madoev
- Institute of Neurogenetics, University of Luebeck, Luebeck, Germany
| | - Anna Aasly
- Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology, Trondheim, Norway
| | - Azlina Ahmad-Annuar
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Bashayer Al-Mubarak
- Center for Genomic Medicine, Research Centre, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Roy N. Alcalay
- Department of Neurology, Columbia University, New York, New York, United States of America
- Neurological Institute, Tel-Aviv Medical Center, Tel-Aviv, Israel; Sackler School of Medicine, Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel
| | - Victoria Alvarez
- Laboratório de Genética, Hospital Universitario Central de Asturias, Oviedo, Asturias, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Ignacio Amorin
- Universidad de la Republica Uruguay, Montevideo, Uruguay
| | - Grazia Annesi
- Institute of Biomedical Research and Innovation, National Research Council, Cosenza, Italy
| | - David Arkadir
- Department of Neurology, Hadassah Medical Center and the Hebrew University, Jerusalem, Israel
| | - Soraya Bardien
- Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council/Stellenbosch University Genomics of Brain Disorders Research Unit, Stellenbosch University, Cape Town, South Africa
| | - Roger A. Barker
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
| | - Melinda Barkhuizen
- DST/NWU Preclinical Drug Development Platform, North-West University, Potchefstroom, North-West, South Africa
| | - A. Nazli Basak
- Suna and Inan Kiraç Foundation, Neurodegeneration Research Laboratory, KUTTAM, School of Medicine, Koç University, Istanbul, Turkey
| | - Vincenzo Bonifati
- Department of Clinical Genetics, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Agnita Boon
- Department of Neurology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Laura Brighina
- Department of Neurology, Milan Center for Neuroscience, University of Milano-Bicocca/San Gerardo Hospital, Monza, Monza Brianza, Italy
| | - Kathrin Brockmann
- Department of Neurodegenerative Diseases, University of Tuebingen, Tuebingen, Baden Wuerttemberg, Germany
- Hertie Institute for Clinical Brain Research and German Centre for Neurodegenerative Diseases, Tuebingen, Baden Wuerttemberg, Germany
| | | | - Jonathan Carr
- South African Medical Research Council/Stellenbosch University Genomics of Brain Disorders Research Unit, Stellenbosch University, Cape Town, South Africa
- Division of Neurology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Jordi Clarimon
- Department of Neurology, Biomedical Research Institute IIB-Sant Pau, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Mario Cornejo-Olivas
- Neurogenetics Research Center, Instituto Nacional de Ciencias Neurologicas, Lima, Peru
- Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Leonor Correia Guedes
- Centro de Estudos Egas Moniz, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculty of Medicine, University of Lisbon, Lisbon, Portugal
| | - Jean-Christophe Corvol
- Paris Brain Institute—ICM, Inserm, CNRS, Assistance Publique Hôpitaux de Paris, Pitié-Salpêtrière Hospital, Department of Neurology, Sorbonne University, Paris, France
| | - David Crosiers
- Department of Neurology, Antwerp University Hospital, Edegem, Belgium
- Translational Neurosciences, Born Bunge Institute, Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Antwerp, Belgium
- Center for Molecular Neurology, VIB, Wilrijk, Antwerp, Belgium
| | - Joana Damásio
- Department of Neurology, Hospital de Santo António—Centro Hospitalar Universitário do Porto, Porto, Portugal
- UnIGENe, Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal
| | - Parimal Das
- Centre for Genetic Disorders, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Patricia de Carvalho Aguiar
- Hospital Israelita Albert Einstein, São Paulo, Brazil
- Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Anna De Rosa
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
| | - Jolanta Dorszewska
- Laboratory of Neurobiology, Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland
| | - Sibel Ertan
- Department of Neurology, School of Medicine, Koç University, Istanbul, Turkey
| | | | - Joaquim Ferreira
- Translational Neurosciences, Born Bunge Institute, Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Antwerp, Belgium
- Laboratory of Clinical Pharmacology and Therapeutics, University of Lisbon, Lisbon, Portugal
| | - Emilia Gatto
- Movement Disorders, Department of Neurology, Instituto de Neurosciencias Buenos Aires, Buenos Aires, Argentina
| | - Gençer Genç
- Department of Neurology, University of Health Sciences, Şişli Hamidiye Etfal Training and Research Hospital, İstanbul, Turkey
| | - Nir Giladi
- Neurological Institute, Tel-Aviv Medical Center, Tel-Aviv, Israel; Sackler School of Medicine, Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel
| | - Pilar Gómez-Garre
- Unidad de Trastornos del Movimiento, Servicio de Neurología y Neurofisiología Clínica, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Seville, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Hasmet Hanagasi
- Department of Neurology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Nobutaka Hattori
- Department of Neurology, Juntendo University School of Medicine, Bunkyo, Tokyo, Japan
| | - Faycal Hentati
- Mongi Ben Hmida National Institute of Neurology, Tunis, Tunisia
| | - Dorota Hoffman-Zacharska
- Institute of Genetics and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | | | - Joseph Jankovic
- Parkinson’s Disease Center and Movement Disorders Clinic, Department of Neurology, Baylor College of Medicine, Houston, Texas, United States of America
| | - Silvia Jesús
- Unidad de Trastornos del Movimiento, Servicio de Neurología y Neurofisiología Clínica, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Seville, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Valtteri Kaasinen
- Neurocenter, Turku University Hospital, Turku, Finland
- Department of Neurology, Satasairaala Hospital, Pori, Finland
- Clinical Neurosciences, Faculty of Medicine, University of Turku, Turku, Finland
| | - Anneke Kievit
- Department of Clinical Genetics, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Peter Klivenyi
- Department of Neurology, University of Szeged, Szeged, Hungary
| | - Vladimir Kostic
- Department for Neurodegeneration, Clinic for Neurology UCCS, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Dariusz Koziorowski
- Department of Neurology, Faculty of Health Science, Medical University in Warsaw, Warsaw, Poland
| | - Andrea A. Kühn
- Movement Disorder and Neuromodulation Unit, Charité, Department of Neurology, Campus Mitte, Universitätsmedizin Berlin, Berlin, Germany
| | - Anthony E. Lang
- Edmond J. Safra Program in Parkinson’s Disease, Division of Neurology, Department of Medicine, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Shen-Yang Lim
- Division of Neurology, Department of Medicine, and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Chin-Hsien Lin
- Department of Neurology, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Katja Lohmann
- Institute of Neurogenetics, University of Luebeck, Luebeck, Germany
| | - Vladana Markovic
- Department for Neurodegeneration, Clinic for Neurology UCCS, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Mika Henrik Martikainen
- Neurocenter, Turku University Hospital, Turku, Finland
- Clinical Neurosciences, Faculty of Medicine, University of Turku, Turku, Finland
- Pontificia Universidad Católica Argentina (UCA), Buenos Aires, Argentina
| | - George Mellick
- Griffith Institute for Drug Discovery (GRIDD), School of Environment and Science, Griffith University, Brisbane, Queensland, Australia
| | - Marcelo Merello
- Pontificia Universidad Católica Argentina (UCA), Buenos Aires, Argentina
- Sección Movimientos Anormales, Departamento de Neurociencias, Fleni, Buenos Aires, Argentina
- Argentine National Scientific and Technological Research Council (CONICET), Buenos Aires, Argentina
| | - Lukasz Milanowski
- Department of Neurology, Faculty of Health Science, Medical University in Warsaw, Warsaw, Poland
| | - Pablo Mir
- Unidad de Trastornos del Movimiento, Servicio de Neurología y Neurofisiología Clínica, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Seville, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Özgür Öztop-Çakmak
- Department of Neurology, School of Medicine, Koç University, Istanbul, Turkey
| | - Márcia Mattos Gonçalves Pimentel
- Department of Genetics, Institute of Biology Roberto Alcantara Gomes, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Teeratorn Pulkes
- Division of Neurology, Department of Medicine, Ramathibodi Hospital, Mahidol University, Rajthevi, Bangkok, Thailand
| | - Andreas Puschmann
- Department of Neurology, Lund University, Lund, Sweden
- Department of Neurology, Skåne University Hospital, Lund, Sweden
| | - Ekaterina Rogaeva
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, ON, Canada
| | - Esther M. Sammler
- Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, University of Dundee, Dundee, United Kingdom
- Molecular and Clinical Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee, United Kingdom
| | - Maria Skaalum Petersen
- Centre of Health Science, University of the Faroe Islands, Tórshavn, Faroe Islands
- Department of Occupational Medicine and Public Health, The Faroese Hospital System, Tórshavn, Faroe Islands
| | - Matej Skorvanek
- Pavol Jozef Šafárik University in Košice, Košice, Slovakia
- Department of Neurology, University Hospital L. Pasteur, Kosice, Slovakia
| | - Mariana Spitz
- Neurology Service, State University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Oksana Suchowersky
- Department of Medicine, Medical Genetics and Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Ai Huey Tan
- Division of Neurology, Department of Medicine, and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Pichet Termsarasab
- Division of Neurology, Department of Medicine, Ramathibodi Hospital, Mahidol University, Rajthevi, Bangkok, Thailand
| | - Avner Thaler
- Neurological Institute, Tel-Aviv Medical Center, Tel-Aviv, Israel; Sackler School of Medicine, Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel
| | - Vitor Tumas
- Behavioral and Movement Disorders Section, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Enza Maria Valente
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Neurogenetics Research Centre, IRCCS Mondino Foundation, Pavia, Italy
| | - Bart van de Warrenburg
- Department of Neurology, Donders Institute for Brain, Cognition, and Behavior, Radboud University Medical Centre, Nijmegen, The Netherlands
| | | | - Ruey-Mei Wu
- Department of Neurology, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Baorong Zhang
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | | | - Justin Solle
- The Michael J. Fox Foundation for Parkinson’s Research, New York, NY, United States of America
| | - Shalini Padmanabhan
- The Michael J. Fox Foundation for Parkinson’s Research, New York, NY, United States of America
| | - Christine Klein
- Institute of Neurogenetics, University of Luebeck, Luebeck, Germany
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Burgunder JM. Mechanisms underlying phenotypic variation in neurogenetic disorders. Nat Rev Neurol 2023:10.1038/s41582-023-00811-4. [PMID: 37202496 DOI: 10.1038/s41582-023-00811-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/12/2023] [Indexed: 05/20/2023]
Abstract
Neurological diseases associated with pathogenic variants in a specific gene, or even with a specific pathogenic variant, can show profound phenotypic variation with regard to symptom presentation, age at onset and disease course. Highlighting examples from a range of neurogenetic disorders, this Review explores emerging mechanisms that are involved in this variability, including environmental, genetic and epigenetic factors that influence the expressivity and penetrance of pathogenic variants. Environmental factors, some of which can potentially be modified to prevent disease, include trauma, stress and metabolic changes. Dynamic patterns of pathogenic variants might explain some of the phenotypic variations, for example, in the case of disorders caused by DNA repeat expansions such as Huntington disease (HD). An important role for modifier genes has also been identified in some neurogenetic disorders, including HD, spinocerebellar ataxia and X-linked dystonia-parkinsonism. In other disorders, such as spastic paraplegia, the basis for most of the phenotypic variability remains unclear. Epigenetic factors have been implicated in disorders such as SGCE-related myoclonus-dystonia and HD. Knowledge of the mechanisms underlying phenotypic variation is already starting to influence management strategies and clinical trials for neurogenetic disorders.
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Kalia LV, Nimmo GAM, Mestre TA. Genetic Testing in Clinical Movement Disorders: A Case-Based Review. Semin Neurol 2023; 43:147-155. [PMID: 36854393 DOI: 10.1055/s-0043-1763507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Genetics are fundamental to understanding the pathophysiology of neurological disease, including movement disorders. Genetic testing in clinical practice has changed dramatically over the last few decades. While the likelihood of establishing an etiological diagnosis is greater now with increased access to testing and more advanced technologies, clinicians face challenges when deciding whether to test, then selecting the appropriate test, and ultimately interpreting and sharing the results with patients and families. In this review, we use a case-based approach to cover core aspects of genetic testing for the neurologist, namely, genetic testing in Parkinson's disease, interpretation of inconclusive genetic test reports, and genetic testing for repeat expansion disorders using Huntington disease as a prototype.
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Affiliation(s)
- Lorraine V Kalia
- Division of Neurology, Department of Medicine, Edmond J. Safra Program in Parkinson's Disease and the Morton and Gloria Shulman Movement Disorders Clinic and Krembil Research Institute, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Graeme A M Nimmo
- Fred A. Litwin Family Centre for Genetic Medicine, Department of Medicine, Mount Sinai Hospital and Toronto General Hospital, University Health Network, University of Toronto, Toronto, Canada
| | - Tiago A Mestre
- Division of Neurology, Department of Medicine, Ottawa Hospital Research Institute, University of Ottawa Brain and Mind Research Institute, The Ottawa Hospital, Ottawa, Ontario Canada
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7
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Differential serum microRNAs in premotor LRRK2 G2019S carriers from Parkinson's disease. NPJ Parkinsons Dis 2023; 9:15. [PMID: 36732514 PMCID: PMC9894906 DOI: 10.1038/s41531-023-00451-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 01/09/2023] [Indexed: 02/04/2023] Open
Abstract
The LRRK2 G2019S pathogenic mutation causes LRRK2-associated Parkinson's disease (L2PD) with incomplete penetrance. LRRK2 non-manifesting carriers (L2NMC) are at PD high risk but predicting pheno-conversion is challenging given the lack of progression biomarkers. To investigate novel biomarkers for PD premotor stages, we performed a longitudinal microRNA (miRNA) assessment of serum samples from G2019S L2NMC followed-up over 8 years. Our cohort consisted of G2019S L2NMC stratified by dopamine transporter single-photon emission computed tomography (DaT-SPECT) into DaT-negative (n = 20) and DaT-positive L2NMC (n = 20), pheno-converted G2019S L2PD patients (n = 20), idiopathic PD (iPD) (n = 19), and controls (n = 40). We also screened a second cohort of L2PD patients (n = 19) and controls (n = 20) (Total n = 158). Compared to healthy controls, we identified eight deregulated miRNAs in DaT-negative L2NMC, six in DaT-positive L2NMC, and one in L2PD. Between groups, the highest miRNA differences, 24 candidate miRNAs, occurred between DaT-positive L2NMC and L2PD. Longitudinally, we found 11 common miRNAs with sustained variation in DaT-negative and DaT-positive L2NMCs compared to their baselines. Our study identifies novel miRNA alterations in premotor stages of PD co-occurring with progressive DaT-SPECT decline before motor manifestation, whose deregulation seems to attenuate after the diagnosis of L2PD. Moreover, we identified four miRNAs with relatively high discriminative ability (AUC = 0.82) between non-pheno-converted DaT-positive G2019S carriers and pheno-converted L2PD patients (miR-4505, miR-8069, miR-6125, and miR-451a), which hold potential as early progression biomarkers for PD.
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Vollstedt EJ, Schaake S, Lohmann K, Padmanabhan S, Brice A, Lesage S, Tesson C, Vidailhet M, Wurster I, Hentati F, Mirelman A, Giladi N, Marder K, Waters C, Fahn S, Kasten M, Brüggemann N, Borsche M, Foroud T, Tolosa E, Garrido A, Annesi G, Gagliardi M, Bozi M, Stefanis L, Ferreira JJ, Correia Guedes L, Avenali M, Petrucci S, Clark L, Fedotova EY, Abramycheva NY, Alvarez V, Menéndez-González M, Jesús Maestre S, Gómez-Garre P, Mir P, Belin AC, Ran C, Lin CH, Kuo MC, Crosiers D, Wszolek ZK, Ross OA, Jankovic J, Nishioka K, Funayama M, Clarimon J, Williams-Gray CH, Camacho M, Cornejo-Olivas M, Torres-Ramirez L, Wu YR, Lee-Chen GJ, Morgadinho A, Pulkes T, Termsarasab P, Berg D, Kuhlenbäumer G, Kühn AA, Borngräber F, de Michele G, De Rosa A, Zimprich A, Puschmann A, Mellick GD, Dorszewska J, Carr J, Ferese R, Gambardella S, Chase B, Markopoulou K, Satake W, Toda T, Rossi M, Merello M, Lynch T, Olszewska DA, Lim SY, Ahmad-Annuar A, Tan AH, Al-Mubarak B, Hanagasi H, Koziorowski D, Ertan S, Genç G, de Carvalho Aguiar P, Barkhuizen M, Pimentel MMG, Saunders-Pullman R, van de Warrenburg B, Bressman S, Toft M, Appel-Cresswell S, Lang AE, Skorvanek M, Boon AJW, Krüger R, Sammler EM, Tumas V, Zhang BR, Garraux G, Chung SJ, Kim YJ, Winkelmann J, Sue CM, Tan EK, Damásio J, Klivényi P, Kostic VS, Arkadir D, Martikainen M, Borges V, Hertz JM, Brighina L, Spitz M, Suchowersky O, Riess O, Das P, Mollenhauer B, Gatto EM, Petersen MS, Hattori N, Wu RM, Illarioshkin SN, Valente EM, Aasly JO, Aasly A, Alcalay RN, Thaler A, Farrer MJ, Brockmann K, Corvol JC, Klein C. Embracing Monogenic Parkinson's Disease: The MJFF Global Genetic PD Cohort. Mov Disord 2023; 38:286-303. [PMID: 36692014 DOI: 10.1002/mds.29288] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 07/20/2022] [Accepted: 07/27/2022] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND As gene-targeted therapies are increasingly being developed for Parkinson's disease (PD), identifying and characterizing carriers of specific genetic pathogenic variants is imperative. Only a small fraction of the estimated number of subjects with monogenic PD worldwide are currently represented in the literature and availability of clinical data and clinical trial-ready cohorts is limited. OBJECTIVE The objectives are to (1) establish an international cohort of affected and unaffected individuals with PD-linked variants; (2) provide harmonized and quality-controlled clinical characterization data for each included individual; and (3) further promote collaboration of researchers in the field of monogenic PD. METHODS We conducted a worldwide, systematic online survey to collect individual-level data on individuals with PD-linked variants in SNCA, LRRK2, VPS35, PRKN, PINK1, DJ-1, as well as selected pathogenic and risk variants in GBA and corresponding demographic, clinical, and genetic data. All registered cases underwent thorough quality checks, and pathogenicity scoring of the variants and genotype-phenotype relationships were analyzed. RESULTS We collected 3888 variant carriers for our analyses, reported by 92 centers (42 countries) worldwide. Of the included individuals, 3185 had a diagnosis of PD (ie, 1306 LRRK2, 115 SNCA, 23 VPS35, 429 PRKN, 75 PINK1, 13 DJ-1, and 1224 GBA) and 703 were unaffected (ie, 328 LRRK2, 32 SNCA, 3 VPS35, 1 PRKN, 1 PINK1, and 338 GBA). In total, we identified 269 different pathogenic variants; 1322 individuals in our cohort (34%) were indicated as not previously published. CONCLUSIONS Within the MJFF Global Genetic PD Study Group, we (1) established the largest international cohort of affected and unaffected individuals carrying PD-linked variants; (2) provide harmonized and quality-controlled clinical and genetic data for each included individual; (3) promote collaboration in the field of genetic PD with a view toward clinical and genetic stratification of patients for gene-targeted clinical trials. © 2023 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
| | - Susen Schaake
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Katja Lohmann
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Shalini Padmanabhan
- Research Programs, The Michael J. Fox Foundation for Parkinson's Research, New York, New York, USA
| | - Alexis Brice
- Department of Neurology, Sorbonne University, Paris Brain Institute - ICM, Inserm, CNRS, Assistance Publique Hôpitaux de Paris, Pitié-Salpêtrière Hospital, Paris, France
| | - Suzanne Lesage
- Sorbonne University, Paris Brain Institute - ICM, Inserm, CNRS, Paris, France
| | - Christelle Tesson
- Sorbonne University, Paris Brain Institute - ICM, Inserm, CNRS, Paris, France
| | - Marie Vidailhet
- Department of Neurology, Sorbonne University, Paris Brain Institute - ICM, Inserm, CNRS, Assistance Publique Hôpitaux de Paris, Pitié-Salpêtrière Hospital, Paris, France
| | - Isabel Wurster
- Department of Neurodegenerative Diseases, University of Tuebingen, Tuebingen, Baden Wuerttemberg, Germany, Hertie Institute for Clinical Brain Research and German Centre for Neurodegenerative Diseases, Tuebingen, Germany
| | - Faycel Hentati
- Mongi Ben Hmida National Institute of Neurology, Tunis, Tunisia
| | - Anat Mirelman
- Laboratory of Early Markers of Neurodegeneration, Neurological Institute, Tel-Aviv Medical Center, Tel-Aviv, Israel; Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel
| | - Nir Giladi
- Neurological Institute, Tel-Aviv Medical Center, Tel-Aviv, Israel; Sackler School of Medicine, Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel
| | - Karen Marder
- Department of Neurology, Taub Institute for Alzheimer's Disease and the Aging Brain, Columbia University, New York, New York, USA
| | - Cheryl Waters
- Department of Neurology, Columbia University, New York, New York, USA
| | - Stanley Fahn
- Department of Neurology, Columbia University, New York, New York, USA
| | - Meike Kasten
- Department of Psychiatry and Psychotherapy and Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Norbert Brüggemann
- Department of Neurology and Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Max Borsche
- Department of Neurology and Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Tatiana Foroud
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Eduardo Tolosa
- Parkinson Disease and Movement Disorders Unit, Neurology Service, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona (UB), Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED:CB06/05/0018-ISCIII), Barcelona, Spain
| | - Alicia Garrido
- Parkinson Disease and Movement Disorders Unit, Neurology Service, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona (UB), Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED:CB06/05/0018-ISCIII), Barcelona, Spain
| | - Grazia Annesi
- Institute of Biomedical Research and Innovation, National Research Council, Cosenza, Italy
| | - Monica Gagliardi
- Institute of Biomedical Research and Innovation, National Research Council, Cosenza, Italy
| | - Maria Bozi
- Parkinson's and Movement Disorders Unit, 2nd Department of Neurology of the University of Athens, Attikon Hospital, Haidari, Athens, Greece; Psychiatry Hospital of Attica "Dafni," Neurology Department, Haidari, Athens, Greece
| | - Leonidas Stefanis
- First Department of Neurology, Medical School of the National and Kapodistrian University of Athens, Eginition Hospital, Athens, Greece
| | - Joaquim J Ferreira
- Laboratory of Clinical Pharmacology and Therapeutics, University of Lisbon, Lisbon, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculty of Medicine, University of Lisbon, Lisbon, Portugal
| | - Leonor Correia Guedes
- Department of Neuroscience and Mental Health, Neurology Department, Hospital de Santa Maria, CHULN, Lisbon, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculty of Medicine, University of Lisbon, Lisbon, Portugal
| | - Micol Avenali
- Neurorehabilitation Unit, IRCCS Mondino Foundation, Pavia, Italy; Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy
| | - Simona Petrucci
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, Rome, Italy; Sant' Andrea University Hospital, Rome, Italy
| | - Lorraine Clark
- Department of Pathology and Cell Biology, Vagelos College of Physicians & Surgeons, Columbia University Irving Medical Center, New York, New York, USA; Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Irving Medical Center, New York, New York, USA; Laboratory of Personalized Genomic Medicine, Vagelos College of Physicians & Surgeons, Columbia University Irving Medical Center, New York, New York, USA
| | | | | | - Victoria Alvarez
- Laboratório de Genética, Hospital Universitario Central de Asturias, Oviedo, Asturias, Spain, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Manuel Menéndez-González
- Servicio Neurología, Hospital Universitario Central de Asturias, Oviedo, Spain; Instituto de Investigación; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Silvia Jesús Maestre
- Unidad de Trastornos del Movimiento, Servicio de Neurología y Neurofisiología Clínica, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Seville, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Pilar Gómez-Garre
- Unidad de Trastornos del Movimiento, Servicio de Neurología y Neurofisiología Clínica, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Seville, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Pablo Mir
- Unidad de Trastornos del Movimiento, Servicio de Neurología y Neurofisiología Clínica, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Seville, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | | | - Caroline Ran
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Chin-Hsien Lin
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan; Department of Neurology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ming-Che Kuo
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan; Department of Neurology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - David Crosiers
- Department of Neurology, Antwerp University Hospital, Edegem, Belgium; Born Bunge Institute, Department of Neurology, University of Antwerp, Wilrijk, Belgium; Center for Molecular Neurology, VIB, Wilrijk, Belgium
| | | | - Owen A Ross
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
| | - Joseph Jankovic
- Parkinson's Disease Center and Movement Disorders Clinic, Department of Neurology, Baylor College of Medicine, Houston, Texas, USA
| | - Kenya Nishioka
- Department of Neurology, Juntendo University School of Medicine, Bunkyo, Tokyo, Japan
| | - Manabu Funayama
- Research Institute for Diseases of Old Age, Graduate School of Medicine, Juntendo University, Bunkyo, Tokyo, Japan
| | - Jordi Clarimon
- Department of Neurology, Biomedical Research Institute IIB-Sant Pau, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | | | - Marta Camacho
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Mario Cornejo-Olivas
- Neurogenetics Research Center, Instituto Nacional de Ciencias Neurologicas, Lima, Peru; Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Luis Torres-Ramirez
- Movement Disorders Unit, Instituto Nacional de Ciencias Neurologicas, Lima, Peru
| | - Yih-Ru Wu
- Department of Neurology, Chang Gung University, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan
| | - Guey-Jen Lee-Chen
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Ana Morgadinho
- Movement Disorders Clinic, Department of Neurology, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Teeratorn Pulkes
- Division of Neurology, Department of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Pichet Termsarasab
- Division of Neurology, Department of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Daniela Berg
- Department of Neurology, Christian-Albrechts-Universität, Kiel, Germany
| | | | - Andrea A Kühn
- Movement Disorder and Neuromodulation Unit, Charité, Universitätsmedizin Berlin, Department of Neurology, Berlin, Germany
| | - Friederike Borngräber
- Movement Disorder and Neuromodulation Unit, Charité, Universitätsmedizin Berlin, Department of Neurology, Berlin, Germany
| | - Giuseppe de Michele
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
| | - Anna De Rosa
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
| | | | - Andreas Puschmann
- Department of Neurology, Clinical Sciences, Lund University, Lund, Sweden; Department of Neurology, Skåne University, Lund, Sweden
| | - George D Mellick
- Griffith Institute for Drug Discovery (GRIDD), School of Environment and Science, Griffith University, Brisbane, Queensland, Australia
| | - Jolanta Dorszewska
- Laboratory of Neurobiology, Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland
| | - Jonathan Carr
- Division of Neurology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Rosangela Ferese
- IRCCS Neuromed, Localita' Camerelle, Pozzilli, Isernia, Italy; Department of Biomolecular Sciences, University of Urbino "Carlo Bo", Urbino, Italy
| | - Stefano Gambardella
- IRCCS Neuromed, Localita' Camerelle, Pozzilli, Isernia, Italy; Department of Biomolecular Sciences, University of Urbino "Carlo Bo", Urbino, Italy
| | - Bruce Chase
- Department of Neurology, NorthShore University HealthSystem, Evanston, Illinois, USA
| | - Katerina Markopoulou
- Department of Neurology, NorthShore University HealthSystem, Evanston Illinois and Department of Neurology, University of Chicago, Chicago, Illinois, USA
| | - Wataru Satake
- Sección Movimientos Anormales, Departamento de Neurociencias, Fleni, Buenos Aires, Argentina; Argentine National Scientific and Technological Research Council (CONICET), Buenos Aires, Argentina
| | - Tatsushi Toda
- Department of Neurology, The University of Tokyo, Tokyo, Japan
| | - Malco Rossi
- Sección Movimientos Anormales, Departamento de Neurociencias, Fleni, Buenos Aires, Argentina; Argentine National Scientific and Technological Research Council (CONICET), Buenos Aires, Argentina
| | - Marcelo Merello
- Sección Movimientos Anormales, Departamento de Neurociencias, Fleni, Buenos Aires, Argentina; Argentine National Scientific and Technological Research Council (CONICET), Argentina; Pontificia Universidad Católica Argentina (UCA), Buenos Aires, Argentina
| | - Timothy Lynch
- Department of Neurology, The Dublin Neurological Institute at the Mater Misericordiae University Hospital, Dublin, Ireland; School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland
| | - Diana A Olszewska
- Department of Neurology, The Dublin Neurological Institute at the Mater Misericordiae University Hospital, Dublin, Ireland; School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland
| | - Shen-Yang Lim
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson's & Related Disorders, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Azlina Ahmad-Annuar
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Ai Huey Tan
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson's & Related Disorders, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Bashayer Al-Mubarak
- Behavioural Genetics Unit, Department of Genetics, Research Centre, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Hasmet Hanagasi
- Department of Neurology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | | | - Sibel Ertan
- Department of Neurology, School of Medicine, Koç University, Istanbul, Turkey
| | - Gençer Genç
- Department of Neurology, University of Health Sciences, Şişli Hamidiye Etfal Training and Research Hospital, İstanbul, Turkey
| | - Patricia de Carvalho Aguiar
- Hospital Israelita Albert Einstein, São Paulo, Brazil; Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Melinda Barkhuizen
- DST/NWU Preclinical Drug Development Platform, North-West University, Potchefstroom, North-West, South Africa
| | - Marcia M G Pimentel
- Department of Genetics, Institute of Biology Roberto Alcantara Gomes, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Bart van de Warrenburg
- Department of Neurology, Donders Institute for Brain, Cognition, and Behavior, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Susan Bressman
- Department of Neurology, Beth Israel Medical Center, New York, New York, USA; Department of Neurology at Albert Einstein College of Medicine, New York, New York, USA
| | - Mathias Toft
- Department of Neurology, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Silke Appel-Cresswell
- Pacific Parkinson's Research Centre, Division of Neurology, Department of Medicine, Vancouver, British Columbia, Canada
| | - Anthony E Lang
- Edmond J. Safra Program in Parkinson's Disease, Division of Neurology, Department of Medicine, University of Toronto, Toronto Western Hospital, Toronto, Ontario, Canada
| | - Matej Skorvanek
- Department of Neurology, Pavol Jozef Šafárik University in Košice, Košice, Slovakia; Department of Neurology, University Hospital L. Pasteur, Kosice, Slovakia
| | - Agnita J W Boon
- Department of Clinical Genetics, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Rejko Krüger
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Esch-sur-Alzette, Luxembourg; Transversal Translational Medicine, Luxembourg Institute of Health (LIH), Strassen, Luxembourg; Parkinson Research Clinic, Centre Hospitalier de Luxembourg (CHL), Luxembourg, Luxembourg
| | - Esther M Sammler
- Neurology Department, Ninewells Hospital and Medical School, Dundee, United Kingdom; MRC Protein Phosphorylation and Ubiquitylation Unit, University of Dundee, Dundee, UK
| | - Vitor Tumas
- Behavioral and Movement Disorders Section, Ribeirão Preto Medical School, University of São Paulo, Brazil
| | - Bao-Rong Zhang
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Gaetan Garraux
- Department of Neurology, Centre Hospitalier Universitaire (CHU) de Liège, Liège, Belgium; MoVeRe Group, GIGA-CRC In Vivo Imaging, University of Liege, Liège, Belgium
| | - Sun Ju Chung
- Medical Genetic Center, Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Yun Joong Kim
- Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea; Department of Neurology, Yongin Severance Hospital, Yonsei University Health System, Yongin, South Korea
| | - Juliane Winkelmann
- Institute of Neurogenomics, Helmholtz Zentrum Muenchen, Neuherberg, Germany; Neurogenetics, Technische Universitaet Muenchen, Munich, Germany; Institute of Human Genetics, Klinikum rechts der Isar der TUM, Munich, Germany; Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Carolyn M Sue
- Department of Neurogenetics, Kolling Institute, University of Sydney, Sydney, New South Wales, Australia; Department of Neurology, Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Eng-King Tan
- Department of Neurology, National Neuroscience Institute, Duke NUS Medical School, Singapore General Hospital, Singapore, Singapore
| | - Joana Damásio
- Department of Neurology, Hospital de Santo António - Centro Hospitalar Universitário do Porto, Porto, Portugal; UnIGENe, Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Portugal
| | - Péter Klivényi
- Department of Neurology, University of Szeged, Szeged, Hungary
| | - Vladimir S Kostic
- Department for Neurodegeneration, Clinic for Neurology CCS, Belgrade, Serbia
| | - David Arkadir
- Department of Neurology, Hadassah Medical Center and the Hebrew University, Jerusalem, Israel
| | - Mika Martikainen
- Neurocenter, Turku University Hospital, Turku, Finland; Clinical Neurosciences, Faculty of Medicine, University of Turku, Turku, Finland
| | - Vanderci Borges
- Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Jens Michael Hertz
- Department of Clinical Genetics, Odense University Hospital, Odense C, Denmark
| | - Laura Brighina
- Department of Neurology, Milan Center for Neuroscience, University of Milano-Bicocca/San Gerardo Hospital, Monza, Italy
| | - Mariana Spitz
- Neurology Service, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Oksana Suchowersky
- Department of Medicine, Medical Genetics and Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Olaf Riess
- Institute of Medical Genetics and Applied Genomics, University of Tuebingen, Tuebingen, Germany
| | - Parimal Das
- Centre for Genetic Disorders, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Brit Mollenhauer
- Movement Disorder Paracelsus-Elena-Klinik, Kassel, Germany; Department of Neurology, University Medical Center Göttingen, Göttingen, Germany
| | - Emilia M Gatto
- Movement Disorders, Department of Neurology, Instituto de Neurosciencias Buenos Aires, Buenos Aires, Argentina
| | - Maria Skaalum Petersen
- Centre of Health Science, University of the Faroe Islands, Tórshavn, Faroe Islands; Department of Occupational Medicine and Public Health, The Faroese Hospital System, Tórshavn, Faroe Islands
| | - Nobutaka Hattori
- Research Institute for Diseases of Old Age, Graduate School of Medicine, Juntendo University, Bunkyo, Tokyo, Japan
| | - Ruey-Meei Wu
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan; Department of Neurology, National Taiwan University College of Medicine, Taipei, Taiwan
| | | | - Enza Maria Valente
- Neurogenetics Research Centre, IRCCS Mondino Foundation, Pavia; Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Jan O Aasly
- Department of Neurology, St. Olavs Hospital, Trondheim, Norway
- Department of Neuroscience, Norwegian University of Science and Technology, Trondheim, Norway
| | - Anna Aasly
- Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology, Trondheim, Norway
| | - Roy N Alcalay
- Department of Neurology, Columbia University, New York, New York, USA
| | - Avner Thaler
- Movement Disorders, Neurological Institute, Tel-Aviv Medical Center, Tel-Aviv, Israel; Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel; Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Matthew J Farrer
- Fixel Institute, Department of Neurology, University of Florida, Gainesville, Florida, USA
| | - Kathrin Brockmann
- Department of Neurodegenerative Diseases, University of Tuebingen, Tuebingen, Baden Wuerttemberg, Germany, Hertie Institute for Clinical Brain Research and German Centre for Neurodegenerative Diseases, Tuebingen, Germany
| | - Jean-Christophe Corvol
- Sorbonne University, Paris Brain Institute - ICM, Inserm, CNRS, Assistance Publique Hôpitaux de Paris, Pitié-Salpêtrière Hospital, Department of Neurology, Paris, France
| | - Christine Klein
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
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9
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Garrido A, Pérez‐Sisqués L, Simonet C, Campoy‐Campos G, Solana‐Balaguer J, Martín‐Flores N, Fernández M, Soto M, Obiang D, Cámara A, Valldeoriola F, Muñoz E, Compta Y, Pérez‐Navarro E, Alberch J, Tolosa E, Martí M, Ezquerra M, Malagelada C, Fernández‐Santiago R. Increased Phospho-AKT in Blood Cells from LRRK2 G2019S Mutation Carriers. Ann Neurol 2022; 92:888-894. [PMID: 35929078 PMCID: PMC9827833 DOI: 10.1002/ana.26469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 07/15/2022] [Accepted: 07/29/2022] [Indexed: 01/12/2023]
Abstract
The purpose of this study was to investigate whether differential phosphorylation states of blood markers can identify patients with LRRK2 Parkinson's disease (PD). We assessed phospho(P)-Ser-935-LRRK2 and P-Ser-473-AKT levels in peripheral blood cells from patients with G2019S LRRK2-associated PD (L2PD, n = 31), G2019S LRRK2 non-manifesting carriers (L2NMC, n = 26), idiopathic PD (iPD, n = 25), and controls (n = 40, total n = 122). We found no differences at P-Ser-935-LRRK2 between groups but detected a specific increase of P-Ser-473-AKT levels in all G2019S carriers, either L2PD or L2NMC, absent in iPD. Although insensitive to LRRK2 inhibition, our study identifies P-Ser-473-AKT as an endogenous candidate biomarker for peripheral inflammation in G2019S carriers using accessible blood cells. ANN NEUROL 2022;92:888-894.
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Affiliation(s)
- Alicia Garrido
- Parkinson Disease and Movement Disorders Unit, Neurology ServiceInstitut Clínic de Neurociències, Hospital Clínic de BarcelonaBarcelonaSpain,Laboratory of Parkinson Disease and Other Neurodegenerative Movement DisordersInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain
| | - Leticia Pérez‐Sisqués
- Department of Biomedicine, Faculty of MedicineUniversitat de BarcelonaBarcelonaSpain,Institut de NeurociènciesUniversitat de BarcelonaBarcelonaSpain
| | - Cristina Simonet
- Parkinson Disease and Movement Disorders Unit, Neurology ServiceInstitut Clínic de Neurociències, Hospital Clínic de BarcelonaBarcelonaSpain,Laboratory of Parkinson Disease and Other Neurodegenerative Movement DisordersInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain
| | - Genís Campoy‐Campos
- Department of Biomedicine, Faculty of MedicineUniversitat de BarcelonaBarcelonaSpain,Institut de NeurociènciesUniversitat de BarcelonaBarcelonaSpain
| | - Júlia Solana‐Balaguer
- Department of Biomedicine, Faculty of MedicineUniversitat de BarcelonaBarcelonaSpain,Institut de NeurociènciesUniversitat de BarcelonaBarcelonaSpain
| | - Núria Martín‐Flores
- Department of Biomedicine, Faculty of MedicineUniversitat de BarcelonaBarcelonaSpain,Institut de NeurociènciesUniversitat de BarcelonaBarcelonaSpain
| | - Manel Fernández
- Parkinson Disease and Movement Disorders Unit, Neurology ServiceInstitut Clínic de Neurociències, Hospital Clínic de BarcelonaBarcelonaSpain,Laboratory of Parkinson Disease and Other Neurodegenerative Movement DisordersInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de BarcelonaBarcelonaSpain,Institut de NeurociènciesUniversitat de BarcelonaBarcelonaSpain
| | - Marta Soto
- Parkinson Disease and Movement Disorders Unit, Neurology ServiceInstitut Clínic de Neurociències, Hospital Clínic de BarcelonaBarcelonaSpain,Laboratory of Parkinson Disease and Other Neurodegenerative Movement DisordersInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain
| | - Donina Obiang
- Parkinson Disease and Movement Disorders Unit, Neurology ServiceInstitut Clínic de Neurociències, Hospital Clínic de BarcelonaBarcelonaSpain,Laboratory of Parkinson Disease and Other Neurodegenerative Movement DisordersInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain
| | - Ana Cámara
- Parkinson Disease and Movement Disorders Unit, Neurology ServiceInstitut Clínic de Neurociències, Hospital Clínic de BarcelonaBarcelonaSpain,Laboratory of Parkinson Disease and Other Neurodegenerative Movement DisordersInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain
| | - Francesc Valldeoriola
- Parkinson Disease and Movement Disorders Unit, Neurology ServiceInstitut Clínic de Neurociències, Hospital Clínic de BarcelonaBarcelonaSpain,Laboratory of Parkinson Disease and Other Neurodegenerative Movement DisordersInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain
| | - Esteban Muñoz
- Parkinson Disease and Movement Disorders Unit, Neurology ServiceInstitut Clínic de Neurociències, Hospital Clínic de BarcelonaBarcelonaSpain,Laboratory of Parkinson Disease and Other Neurodegenerative Movement DisordersInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain
| | - Yaroslau Compta
- Parkinson Disease and Movement Disorders Unit, Neurology ServiceInstitut Clínic de Neurociències, Hospital Clínic de BarcelonaBarcelonaSpain,Laboratory of Parkinson Disease and Other Neurodegenerative Movement DisordersInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain
| | - Esther Pérez‐Navarro
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain,Department of Biomedicine, Faculty of MedicineUniversitat de BarcelonaBarcelonaSpain,Institut de NeurociènciesUniversitat de BarcelonaBarcelonaSpain
| | - Jordi Alberch
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain,Department of Biomedicine, Faculty of MedicineUniversitat de BarcelonaBarcelonaSpain,Institut de NeurociènciesUniversitat de BarcelonaBarcelonaSpain
| | - Eduardo Tolosa
- Parkinson Disease and Movement Disorders Unit, Neurology ServiceInstitut Clínic de Neurociències, Hospital Clínic de BarcelonaBarcelonaSpain,Laboratory of Parkinson Disease and Other Neurodegenerative Movement DisordersInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain
| | - María‐José Martí
- Parkinson Disease and Movement Disorders Unit, Neurology ServiceInstitut Clínic de Neurociències, Hospital Clínic de BarcelonaBarcelonaSpain,Laboratory of Parkinson Disease and Other Neurodegenerative Movement DisordersInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain
| | - Mario Ezquerra
- Parkinson Disease and Movement Disorders Unit, Neurology ServiceInstitut Clínic de Neurociències, Hospital Clínic de BarcelonaBarcelonaSpain,Laboratory of Parkinson Disease and Other Neurodegenerative Movement DisordersInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain
| | - Cristina Malagelada
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain,Department of Biomedicine, Faculty of MedicineUniversitat de BarcelonaBarcelonaSpain,Institut de NeurociènciesUniversitat de BarcelonaBarcelonaSpain
| | - Rubén Fernández‐Santiago
- Parkinson Disease and Movement Disorders Unit, Neurology ServiceInstitut Clínic de Neurociències, Hospital Clínic de BarcelonaBarcelonaSpain,Laboratory of Parkinson Disease and Other Neurodegenerative Movement DisordersInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018‐ISCIII)BarcelonaSpain,Department of Biomedicine, Faculty of MedicineUniversitat de BarcelonaBarcelonaSpain
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10
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Tansey MG, Wallings RL, Houser MC, Herrick MK, Keating CE, Joers V. Inflammation and immune dysfunction in Parkinson disease. Nat Rev Immunol 2022; 22:657-673. [PMID: 35246670 PMCID: PMC8895080 DOI: 10.1038/s41577-022-00684-6] [Citation(s) in RCA: 356] [Impact Index Per Article: 178.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/24/2022] [Indexed: 01/18/2023]
Abstract
Parkinson disease (PD) is a progressive neurodegenerative disease that affects peripheral organs as well as the central nervous system and involves a fundamental role of neuroinflammation in its pathophysiology. Neurohistological and neuroimaging studies support the presence of ongoing and end-stage neuroinflammatory processes in PD. Moreover, numerous studies of peripheral blood and cerebrospinal fluid from patients with PD suggest alterations in markers of inflammation and immune cell populations that could initiate or exacerbate neuroinflammation and perpetuate the neurodegenerative process. A number of disease genes and risk factors have been identified as modulators of immune function in PD and evidence is mounting for a role of viral or bacterial exposure, pesticides and alterations in gut microbiota in disease pathogenesis. This has led to the hypothesis that complex gene-by-environment interactions combine with an ageing immune system to create the 'perfect storm' that enables the development and progression of PD. We discuss the evidence for this hypothesis and opportunities to harness the emerging immunological knowledge from patients with PD to create better preclinical models with the long-term goal of enabling earlier identification of at-risk individuals to prevent, delay and more effectively treat the disease.
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Affiliation(s)
- Malú Gámez Tansey
- Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, University of Florida College of Medicine, Gainesville, FL, USA.
- Department of Neurology, Norman Fixel Institute for Neurological Diseases, University of Florida Health, Gainesville, FL, USA.
| | - Rebecca L Wallings
- Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, University of Florida College of Medicine, Gainesville, FL, USA
| | - Madelyn C Houser
- Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, GA, USA
| | - Mary K Herrick
- Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, University of Florida College of Medicine, Gainesville, FL, USA
| | - Cody E Keating
- Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, University of Florida College of Medicine, Gainesville, FL, USA
| | - Valerie Joers
- Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, University of Florida College of Medicine, Gainesville, FL, USA
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11
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Dulski J, Uitti RJ, Ross OA, Wszolek ZK. Genetic architecture of Parkinson’s disease subtypes – Review of the literature. Front Aging Neurosci 2022; 14:1023574. [PMID: 36337703 PMCID: PMC9632166 DOI: 10.3389/fnagi.2022.1023574] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 10/03/2022] [Indexed: 11/13/2022] Open
Abstract
The heterogeneity of Parkinson’s disease (PD) has been recognized since its description by James Parkinson over 200 years ago. The complexity of motor and non-motor PD manifestations has led to many attempts of PD subtyping with different prognostic outcomes; however, the pathophysiological foundations of PD heterogeneity remain elusive. Genetic contributions to PD may be informative in understanding the underpinnings of PD subtypes. As such, recognizing genotype-phenotype associations may be crucial for successful gene therapy. We review the state of knowledge on the genetic architecture underlying PD subtypes, discussing the monogenic forms, as well as oligo- and polygenic risk factors associated with various PD subtypes. Based on our review, we argue for the unification of PD subtyping classifications, the dichotomy of studies on genetic factors and genetic modifiers of PD, and replication of results from previous studies.
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Affiliation(s)
- Jarosław Dulski
- Department of Neurology, Mayo Clinic, Jacksonville, FL, United States
- Division of Neurological and Psychiatric Nursing, Faculty of Health Sciences, Medical University of Gdańsk, Gdańsk, Poland
- Department of Neurology, St. Adalbert Hospital, Copernicus PL Ltd., Gdańsk, Poland
| | - Ryan J. Uitti
- Department of Neurology, Mayo Clinic, Jacksonville, FL, United States
| | - Owen A. Ross
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Zbigniew K. Wszolek
- Department of Neurology, Mayo Clinic, Jacksonville, FL, United States
- *Correspondence: Zbigniew K. Wszolek,
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12
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Farrer MJ. Obituary for Jan O. Aasly (1950-2022). Mov Disord 2022; 37:1783-1784. [PMID: 36004440 DOI: 10.1002/mds.29198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 08/02/2022] [Indexed: 11/08/2022] Open
Affiliation(s)
- Matthew J Farrer
- Department of Neurology, University of Florida, Gainesville, Florida, USA
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13
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Trinh J, Schymanski EL, Smajic S, Kasten M, Sammler E, Grünewald A. Molecular mechanisms defining penetrance of LRRK2-associated Parkinson's disease. MED GENET-BERLIN 2022; 34:103-116. [PMID: 38835904 PMCID: PMC11006382 DOI: 10.1515/medgen-2022-2127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Mutations in Leucine-rich repeat kinase 2 (LRRK2) are the most frequent cause of dominantly inherited Parkinson's disease (PD). LRRK2 mutations, among which p.G2019S is the most frequent, are inherited with reduced penetrance. Interestingly, the disease risk associated with LRRK2 G2019S can vary dramatically depending on the ethnic background of the carrier. While this would suggest a genetic component in the definition of LRRK2-PD penetrance, only few variants have been shown to modify the age at onset of patients harbouring LRRK2 mutations, and the exact cellular pathways controlling the transition from a healthy to a diseased state currently remain elusive. In light of this knowledge gap, recent studies also explored environmental and lifestyle factors as potential modifiers of LRRK2-PD. In this article, we (i) describe the clinical characteristics of LRRK2 mutation carriers, (ii) review known genes linked to LRRK2-PD onset and (iii) summarize the cellular functions of LRRK2 with particular emphasis on potential penetrance-related molecular mechanisms. This section covers LRRK2's involvement in Rab GTPase and immune signalling as well as in the regulation of mitochondrial homeostasis and dynamics. Additionally, we explored the literature with regard to (iv) lifestyle and (v) environmental factors that may influence the penetrance of LRRK2 mutations, with a view towards further exposomics studies. Finally, based on this comprehensive overview, we propose potential future in vivo, in vitro and in silico studies that could provide a better understanding of the processes triggering PD in individuals with LRRK2 mutations.
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Affiliation(s)
- Joanne Trinh
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Emma L Schymanski
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Semra Smajic
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Meike Kasten
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
- Department of Psychiatry and Psychotherapy, University of Lübeck, Lübeck, Germany
| | - Esther Sammler
- Medical Research Council (MRC) Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee, UK
- Department of Neurology, School of Medicine, Dundee, Ninewells Hospital, Dundee, UK
| | - Anne Grünewald
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
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14
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Fernández-Santiago R, Sharma M. What have we learned from genome-wide association studies (GWAS) in Parkinson's disease? Ageing Res Rev 2022; 79:101648. [PMID: 35595184 DOI: 10.1016/j.arr.2022.101648] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 04/11/2022] [Accepted: 05/11/2022] [Indexed: 11/01/2022]
Abstract
After fifteen years of genome-wide association studies (GWAS) in Parkinson's disease (PD), what have we learned? Addressing this question will help catalogue the progress made towards elucidating disease mechanisms, improving the clinical utility of the identified loci, and envisioning how we can harness the strides to develop translational GWAS strategies. Here we review the advances of PD GWAS made to date while critically addressing the challenges and opportunities for next-generation GWAS. Thus, deciphering the missing heritability in underrepresented populations is currently at the reach of hand for a truly comprehensive understanding of the genetics of PD across the different ethnicities. Moreover, state-of-the-art GWAS designs hold a true potential for enhancing the clinical applicability of genetic findings, for instance, by improving disease prediction (PD risk and progression). Lastly, advanced PD GWAS findings, alone or in combination with clinical and environmental parameters, are expected to have the capacity for defining patient enriched cohorts stratified by genetic risk profiles and readily available for neuroprotective clinical trials. Overall, envisioning future strategies for advanced GWAS is currently timely and can be instrumental in providing novel genetic readouts essential for a true clinical translatability of PD genetic findings.
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15
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Genetics of cognitive dysfunction in Parkinson's disease. PROGRESS IN BRAIN RESEARCH 2022; 269:195-226. [PMID: 35248195 DOI: 10.1016/bs.pbr.2022.01.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Presentation and progression of cognitive symptoms in Parkinson's disease are highly variable. PD is a genetically complex disorder with multiple genetic risk factors and understanding the role that genes play in cognitive outcomes is important for patient counseling and treatment. Currently, there are seven well-described genes that increase the risk for PD, with variable levels of penetrance: SNCA, LRRK2, VPS35, PRKN, PINK1, DJ1 and GBA. In addition, large, genome-wide association studies have identified multiple loci in our DNA which increase PD risk. In this chapter, we summarize what is currently known about each of the seven strongly-associated PD genes and select PD risk variants, including PITX3, TMEM106B, SNCA Rep1, APOɛ4, COMT and MAPT H1/H1, along with their respective relationships to cognition.
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16
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Garrido A, Santamaría E, Fernández-Irigoyen J, Soto M, Simonet C, Fernández M, Obiang D, Tolosa E, Martí MJ, Padmanabhan S, Malagelada C, Ezquerra M, Fernández-Santiago R. Differential Phospho-Signatures in Blood Cells Identify LRRK2 G2019S Carriers in Parkinson's Disease. Mov Disord 2022; 37:1004-1015. [PMID: 35049090 PMCID: PMC9306798 DOI: 10.1002/mds.28927] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/14/2021] [Accepted: 12/27/2021] [Indexed: 12/15/2022] Open
Abstract
Background The clinicopathological phenotype of G2019S LRRK2‐associated Parkinson's disease (L2PD) is similar to idiopathic Parkinson's disease (iPD), and G2019S LRRK2 nonmanifesting carriers (L2NMCs) are at increased risk for development of PD. With various therapeutic strategies in the clinical and preclinical pipeline, there is an urgent need to identify biomarkers that can aid early diagnosis and patient enrichment for ongoing and future LRRK2‐targeted trials. Objective The objective of this work was to investigate differential protein and phospho‐protein changes related to G2019S mutant LRRK2 in peripheral blood mononuclear cells from G2019S L2PD patients and G2019S L2NMCs, identify specific phospho‐protein changes associated with the G2019S mutation and with disease status, and compare findings with patients with iPD. Methods We performed an unbiased phospho‐proteomic study by isobaric label–based mass spectrometry using peripheral blood mononuclear cell group pools from a LRRK2 cohort from Spain encompassing patients with G2019S L2PD (n = 20), G2019S L2NMCs (n = 20), healthy control subjects (n = 30), patients with iPD (n = 15), patients with R1441G L2PD (n = 5), and R1441G L2NMCs (n = 3) (total N = 93). Results Comparing G2019S carriers with healthy controls, we identified phospho‐protein changes associated with the G2019S mutation. Moreover, we uncovered a specific G2019S phospho‐signature that changes with disease status and can discriminate patients with G2019S L2PD, G2019S L2NMCs, and healthy controls. Although patients with iPD showed a differential phospho‐proteomic profile, biological enrichment analyses revealed similar changes in deregulated pathways across the three groups. Conclusions We found a differential phospho‐signature associated with LRRK2 G2019S for which, consistent with disease status, the phospho‐profile from PD at‐risk G2019S L2NMCs was more similar to healthy controls than patients with G2019S L2PD with the manifested disease. © 2022 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society
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Affiliation(s)
- Alicia Garrido
- Parkinson Disease and Movement Disorders Unit, Neurology Service, Institut Clínic de Neurociències, Hospital Clínic de Barcelona, Barcelona, Catalonia, Spain.,Lab of Parkinson Disease & Other Neurodegenerative Movement Disorders, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018-ISCIII), Barcelona, Catalonia, Spain
| | - Enrique Santamaría
- Proteored-ISCIII, Proteomics Platform, Clinical Neuroproteomics Unit, Navarrabiomed, Departamento de Salud, UPNA, IdiSNA, Pamplona, Navarra, Spain
| | - Joaquín Fernández-Irigoyen
- Proteored-ISCIII, Proteomics Platform, Clinical Neuroproteomics Unit, Navarrabiomed, Departamento de Salud, UPNA, IdiSNA, Pamplona, Navarra, Spain
| | - Marta Soto
- Parkinson Disease and Movement Disorders Unit, Neurology Service, Institut Clínic de Neurociències, Hospital Clínic de Barcelona, Barcelona, Catalonia, Spain.,Lab of Parkinson Disease & Other Neurodegenerative Movement Disorders, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018-ISCIII), Barcelona, Catalonia, Spain
| | - Cristina Simonet
- Parkinson Disease and Movement Disorders Unit, Neurology Service, Institut Clínic de Neurociències, Hospital Clínic de Barcelona, Barcelona, Catalonia, Spain.,Lab of Parkinson Disease & Other Neurodegenerative Movement Disorders, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018-ISCIII), Barcelona, Catalonia, Spain
| | - Manel Fernández
- Parkinson Disease and Movement Disorders Unit, Neurology Service, Institut Clínic de Neurociències, Hospital Clínic de Barcelona, Barcelona, Catalonia, Spain.,Lab of Parkinson Disease & Other Neurodegenerative Movement Disorders, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018-ISCIII), Barcelona, Catalonia, Spain.,Parkinson's Disease and Movement Disorders Group of the Institut de Neurociències (Universitat de Barcelona), Barcelona, Catalonia, Spain
| | - Donina Obiang
- Parkinson Disease and Movement Disorders Unit, Neurology Service, Institut Clínic de Neurociències, Hospital Clínic de Barcelona, Barcelona, Catalonia, Spain.,Lab of Parkinson Disease & Other Neurodegenerative Movement Disorders, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018-ISCIII), Barcelona, Catalonia, Spain
| | - Eduardo Tolosa
- Parkinson Disease and Movement Disorders Unit, Neurology Service, Institut Clínic de Neurociències, Hospital Clínic de Barcelona, Barcelona, Catalonia, Spain.,Lab of Parkinson Disease & Other Neurodegenerative Movement Disorders, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018-ISCIII), Barcelona, Catalonia, Spain
| | - María-José Martí
- Parkinson Disease and Movement Disorders Unit, Neurology Service, Institut Clínic de Neurociències, Hospital Clínic de Barcelona, Barcelona, Catalonia, Spain.,Lab of Parkinson Disease & Other Neurodegenerative Movement Disorders, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018-ISCIII), Barcelona, Catalonia, Spain
| | - Shalini Padmanabhan
- The Michael J. Fox Foundation for Parkinson's Research, Grand Central Station, New York, New York, USA
| | - Cristina Malagelada
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018-ISCIII), Barcelona, Catalonia, Spain.,Department of Biomedicine, Faculty of Medicine, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Mario Ezquerra
- Parkinson Disease and Movement Disorders Unit, Neurology Service, Institut Clínic de Neurociències, Hospital Clínic de Barcelona, Barcelona, Catalonia, Spain.,Lab of Parkinson Disease & Other Neurodegenerative Movement Disorders, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018-ISCIII), Barcelona, Catalonia, Spain
| | - Rubén Fernández-Santiago
- Parkinson Disease and Movement Disorders Unit, Neurology Service, Institut Clínic de Neurociències, Hospital Clínic de Barcelona, Barcelona, Catalonia, Spain.,Lab of Parkinson Disease & Other Neurodegenerative Movement Disorders, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Institut de Neurociències, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018-ISCIII), Barcelona, Catalonia, Spain.,Histology Unit, Department of Biomedicine, Faculty of Medicine, Universitat de Barcelona, Barcelona, Catalonia, Spain
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17
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Guadagnolo D, Piane M, Torrisi MR, Pizzuti A, Petrucci S. Genotype-Phenotype Correlations in Monogenic Parkinson Disease: A Review on Clinical and Molecular Findings. Front Neurol 2021; 12:648588. [PMID: 34630269 PMCID: PMC8494251 DOI: 10.3389/fneur.2021.648588] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 03/08/2021] [Indexed: 12/30/2022] Open
Abstract
Parkinson disease (PD) is a complex neurodegenerative disorder, usually with multifactorial etiology. It is characterized by prominent movement disorders and non-motor symptoms. Movement disorders commonly include bradykinesia, rigidity, and resting tremor. Non-motor symptoms can include behavior disorders, sleep disturbances, hyposmia, cognitive impairment, and depression. A fraction of PD cases instead is due to Parkinsonian conditions with Mendelian inheritance. The study of the genetic causes of these phenotypes has shed light onto common pathogenetic mechanisms underlying Parkinsonian conditions. Monogenic Parkinsonisms can present autosomal dominant, autosomal recessive, or even X-linked inheritance patterns. Clinical presentations vary from forms indistinguishable from idiopathic PD to severe childhood-onset conditions with other neurological signs. We provided a comprehensive description of each condition, discussing current knowledge on genotype-phenotype correlations. Despite the broad clinical spectrum and the many genes involved, the phenotype appears to be related to the disrupted cell function and inheritance pattern, and several assumptions about genotype-phenotype correlations can be made. The interest in these assumptions is not merely speculative, in the light of novel promising targeted therapies currently under development.
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Affiliation(s)
- Daniele Guadagnolo
- Department of Experimental Medicine, Policlinico Umberto i Hospital, Sapienza University of Rome, Rome, Italy
| | - Maria Piane
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, Rome, Italy.,Medical Genetics and Advanced Cell Diagnostics Unit, S. Andrea University Hospital, Rome, Italy
| | - Maria Rosaria Torrisi
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, Rome, Italy.,Medical Genetics and Advanced Cell Diagnostics Unit, S. Andrea University Hospital, Rome, Italy
| | - Antonio Pizzuti
- Department of Experimental Medicine, Policlinico Umberto i Hospital, Sapienza University of Rome, Rome, Italy
| | - Simona Petrucci
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, Rome, Italy.,Medical Genetics and Advanced Cell Diagnostics Unit, S. Andrea University Hospital, Rome, Italy
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Usnich T, Vollstedt EJ, Schell N, Skrahina V, Bogdanovic X, Gaber H, Förster TM, Heuer A, Koleva-Alazeh N, Csoti I, Basak AN, Ertan S, Genc G, Bauer P, Lohmann K, Grünewald A, Schymanski EL, Trinh J, Schaake S, Berg D, Gruber D, Isaacson SH, Kühn AA, Mollenhauer B, Pedrosa DJ, Reetz K, Sammler EM, Valente EM, Valzania F, Volkmann J, Zittel S, Brüggemann N, Kasten M, Rolfs A, Klein C. LIPAD (LRRK2/Luebeck International Parkinson's Disease) Study Protocol: Deep Phenotyping of an International Genetic Cohort. Front Neurol 2021; 12:710572. [PMID: 34475849 PMCID: PMC8406937 DOI: 10.3389/fneur.2021.710572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 07/13/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Pathogenic variants in the Leucine-rich repeat kinase 2 (LRRK2) gene are the most common known monogenic cause of Parkinson's disease (PD). LRRK2-linked PD is clinically indistinguishable from idiopathic PD and inherited in an autosomal dominant fashion with reduced penetrance and variable expressivity that differ across ethnicities and geographic regions. Objective: To systematically assess clinical signs and symptoms including non-motor features, comorbidities, medication and environmental factors in PD patients, unaffected LRRK2 pathogenic variant carriers, and controls. A further focus is to enable the investigation of modifiers of penetrance and expressivity of LRRK2 pathogenic variants using genetic and environmental data. Methods: Eligible participants are invited for a personal or online examination which comprises completion of a detailed eCRF and collection of blood samples (to obtain DNA, RNA, serum/plasma, immune cells), urine as well as household dust. We plan to enroll 1,000 participants internationally: 300 with LRRK2-linked PD, 200 with LRRK2 pathogenic variants but without PD, 100 PD patients with pathogenic variants in the GBA or PRKN genes, 200 patients with idiopathic PD, and 200 healthy persons without pathogenic variants. Results: The eCRF consists of an investigator-rated (1 h) and a self-rated (1.5 h) part. The first part includes the Movement Disorder Society Unified Parkinson's Disease Rating, Hoehn &Yahr, and Schwab & England Scales, the Brief Smell Identification Test, and Montreal Cognitive Assessment. The self-rating part consists of a PD risk factor, food frequency, autonomic dysfunction, and quality of life questionnaires, the Pittsburgh Sleep Quality Inventory, and the Epworth Sleepiness as well as the Hospital Anxiety and Depression Scales. The first 15 centers have been initiated and the first 150 participants enrolled (as of March 25th, 2021). Conclusions: LIPAD is a large-scale international scientific effort focusing on deep phenotyping of LRRK2-linked PD and healthy pathogenic variant carriers, including the comparison with additional relatively frequent genetic forms of PD, with a future perspective to identify genetic and environmental modifiers of penetrance and expressivity Clinical Trial Registration:ClinicalTrials.gov, NCT04214509.
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Affiliation(s)
- Tatiana Usnich
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | | | - Nathalie Schell
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | | | | | | | | | | | | | - Ilona Csoti
- Gertrudis Clinic Biskirchen, Parkinson-Center, Leun, Germany
| | - Ayse Nazli Basak
- Neurodegeneration Research Laboratory, Suna and Inan Kirac Foundation, Koç University Translational Medicine Research Center, Koç University School of Medicine, Istanbul, Turkey
| | - Sibel Ertan
- Department of Neurology, Koç University School of Medicine, Istanbul, Turkey
| | - Gencer Genc
- Sişli Etfal Training and Research Hospital, Istanbul, Turkey
| | | | - Katja Lohmann
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Anne Grünewald
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Emma L Schymanski
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Joanne Trinh
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Susen Schaake
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Daniela Berg
- Department of Neurology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Doreen Gruber
- Neurologisches Fachkrankenhaus Für Bewegungsstörungen/Parkinson, Beelitz, Germany
| | - Stuart H Isaacson
- Parkinson's Disease and Movement Disorder Center of Boca Raton, Boca Raton, FL, United States
| | - Andrea A Kühn
- Department of Neurology and Experimental Neurology, Charité Medical University Berlin, Berlin, Germany
| | | | - David J Pedrosa
- Department of Neurology, University Hospital of Gießen and Marburg, Marburg, Germany
| | - Kathrin Reetz
- Department of Neurology, University Hospital Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Esther M Sammler
- Medical Research Council Protein Phosphorylation and Ubiquitylation Unit and Molecular and Clinical Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee, United Kingdom
| | - Enza Maria Valente
- Department of Molecular Medicine, University of Pavia and Istituto di Ricovero e Cura a Carattere Scientifico Mondino Foundation, Pavia, Italy
| | - Franco Valzania
- Neurology Unit, Azienda USL - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Jens Volkmann
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Simone Zittel
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Norbert Brüggemann
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany.,Department of Neurology, University of Lübeck, Lübeck, Germany
| | - Meike Kasten
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany.,Department of Psychiatry and Psychotherapy, University of Lübeck, Lübeck, Germany
| | | | - Christine Klein
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
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19
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Day JO, Mullin S. The Genetics of Parkinson's Disease and Implications for Clinical Practice. Genes (Basel) 2021; 12:genes12071006. [PMID: 34208795 PMCID: PMC8304082 DOI: 10.3390/genes12071006] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/21/2021] [Accepted: 06/28/2021] [Indexed: 12/17/2022] Open
Abstract
The genetic landscape of Parkinson’s disease (PD) is characterised by rare high penetrance pathogenic variants causing familial disease, genetic risk factor variants driving PD risk in a significant minority in PD cases and high frequency, low penetrance variants, which contribute a small increase of the risk of developing sporadic PD. This knowledge has the potential to have a major impact in the clinical care of people with PD. We summarise these genetic influences and discuss the implications for therapeutics and clinical trial design.
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Affiliation(s)
- Jacob Oliver Day
- Faculty of Health, University of Plymouth, Plymouth PL4 8AA, UK;
| | - Stephen Mullin
- Faculty of Health, University of Plymouth, Plymouth PL4 8AA, UK;
- Department of Clinical and Movement Neurosciences, University College London Institute of Neurology, London WC1N 3BG, UK
- Correspondence:
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20
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Magrinelli F, Balint B, Bhatia KP. Challenges in Clinicogenetic Correlations: One Gene - Many Phenotypes. Mov Disord Clin Pract 2021; 8:299-310. [PMID: 33816657 PMCID: PMC8015894 DOI: 10.1002/mdc3.13165] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/02/2020] [Accepted: 12/19/2020] [Indexed: 12/25/2022] Open
Abstract
Background Progress in genetics – particularly the advent of next‐generation sequencing (NGS) – has enabled an unparalleled gene discovery and revealed unmatched complexity of genotype–phenotype correlations in movement disorders. Among other things, it has emerged that mutations in one and the same gene can cause multiple, often markedly different phenotypes. Consequently, movement disorder specialists have increasingly experienced challenges in clinicogenetic correlations. Objectives To deconstruct biological phenomena and mechanistic bases of phenotypic heterogeneity in monogenic movement disorders and neurodegenerative diseases. To discuss the evolving role of movement disorder specialists in reshaping disease phenotypes in the NGS era. Methods This scoping review details phenomena contributing to phenotypic heterogeneity and their underlying mechanisms. Results Three phenomena contribute to phenotypic heterogeneity, namely incomplete penetrance, variable expressivity and pleiotropy. Their underlying mechanisms, which are often shared across phenomena and non‐mutually exclusive, are not fully elucidated. They involve genetic factors (ie, different mutation types, dynamic mutations, somatic mosaicism, intragenic intra‐ and inter‐allelic interactions, modifiers and epistatic genes, mitochondrial heteroplasmy), epigenetic factors (ie, genomic imprinting, X‐chromosome inactivation, modulation of genetic and chromosomal defects), and environmental factors. Conclusion Movement disorders is unique in its reliance on clinical judgment to accurately define disease phenotypes. This has been reaffirmed by the NGS revolution, which provides ever‐growing sequencing data and fuels challenges in variant pathogenicity assertions for such clinically heterogeneous disorders. Deep phenotyping, with characterization and continual updating of “core” phenotypes, and comprehension of determinants of genotype–phenotype complex relationships are crucial for clinicogenetic correlations and have implications for the diagnosis, treatment and counseling.
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Affiliation(s)
- Francesca Magrinelli
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology University College London London United Kingdom.,Department of Neurosciences, Biomedicine and Movement Sciences University of Verona Verona Italy
| | - Bettina Balint
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology University College London London United Kingdom.,Department of Neurology University Hospital Heidelberg Heidelberg Germany
| | - Kailash P Bhatia
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology University College London London United Kingdom
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21
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Aasly JO. Inflammatory Diseases Among Norwegian LRRK2 Mutation Carriers. A 15-Years Follow-Up of a Cohort. Front Neurosci 2021; 15:634666. [PMID: 33584195 PMCID: PMC7876287 DOI: 10.3389/fnins.2021.634666] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 01/06/2021] [Indexed: 12/29/2022] Open
Abstract
The first families with LRRK2 related Parkinson’s disease (PD) were presented around 15 years ago and numerous papers have described the characteristics of the LRRK2 phenotype. The prevalence of autosomal dominant PD varies around the world mainly depending on local founder effects. The highest prevalence of LRRK2 G2019S PD in Norway is located to the central part of the country and most families could be traced back to common ancestors. The typical Norwegian LRRK2 phenotype is not different from classical PD and similar to that seen in most other LRRK2 families. The discovery of LRRK2 PD has allowed us to follow-up multi-incident families and to study their phenotype longitudinally. In the Norwegian LRRK2 families there has been a significantly higher incidence of inflammatory diseases like multiple sclerosis and rheumatoid arthritis that seen in other PD populations. Recent studies in LRRK2 mechanisms have indicated that this protein may be crucial in initiating disease processes. In this short survey of 100 Norwegian mutation carriers followed through more than 15 years are presented. The prevalence of inflammatory diseases among these cases is highlighted. The role of LRRK2 in the conversion process from carrier status to PD phenotype is still unknown and disease generating mechanisms important for initiating LRRK2 PD are still to be identified.
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Affiliation(s)
- Jan O Aasly
- Department of Neurology, St. Olavs Hospital, Trondheim, Norway.,Department of Neuromedicine and Movement Science (INB), Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
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22
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Brown EE, Blauwendraat C, Trinh J, Rizig M, Nalls MA, Leveille E, Ruskey JA, Jonvik H, Tan MMX, Bandres-Ciga S, Hassin-Baer S, Brockmann K, Infante J, Tolosa E, Ezquerra M, Ben Romdhan S, Benmahdjoub M, Arezki M, Mhiri C, Hardy J, Singleton AB, Alcalay RN, Gasser T, Grosset DG, Williams NM, Pittman A, Gan-Or Z, Fernandez-Santiago R, Brice A, Lesage S, Farrer M, Wood N, Morris HR. Analysis of DNM3 and VAMP4 as genetic modifiers of LRRK2 Parkinson's disease. Neurobiol Aging 2020; 97:148.e17-148.e24. [PMID: 32873436 PMCID: PMC7762821 DOI: 10.1016/j.neurobiolaging.2020.07.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 07/02/2020] [Accepted: 07/03/2020] [Indexed: 01/01/2023]
Abstract
The LRRK2 gene has rare (p.G2019S) and common risk variants for Parkinson’s disease (PD). DNM3 has previously been reported as a genetic modifier of the age at onset in PD patients carrying the LRRK2 p.G2019S mutation. We analyzed this effect in a new cohort of LRRK2 p.G2019S heterozygotes (n = 724) and meta-analyzed our data with previously published data (n = 754). VAMP4 is in close proximity to DNM3, and was associated with PD in a recent study, so it is possible that variants in this gene may be important. We also analyzed the effect of VAMP4 rs11578699 on LRRK2 penetrance. Our analysis of DNM3 in previously unpublished data does not show an effect on age at onset in LRRK2 p.G2019S carriers; however, the inter-study heterogeneity may indicate ethnic or population-specific effects of DNM3. There was no evidence for linkage disequilibrium between DNM3 and VAMP4. Analysis of sporadic patients stratified by the risk variant LRRK2 rs10878226 indicates a possible interaction between common variation in LRRK2 and VAMP4 in disease risk. Analysis of DNM3 in previously unpublished data does not show an interaction between DNM3 and LRRK2 G2019S for AAO. There was no evidence for linkage disequilibrium between DNM3 rs2421947 and VAMP4 rs11578699. Analysis of sporadic PD patients stratified by the PD risk variant rs10878226 indicates a possible interaction between LRRK2 and VAMP4.
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Affiliation(s)
- Emmeline E Brown
- Department of Clinical and Movement Neurosciences, Institute of Neurology, University College London, London, UK
| | - Cornelis Blauwendraat
- Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA
| | - Joanne Trinh
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Mie Rizig
- Department of Clinical and Movement Neurosciences, Institute of Neurology, University College London, London, UK
| | - Mike A Nalls
- Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA; Data Tecnica International, Glen Echo, MD, USA
| | - Etienne Leveille
- Montreal Neurological Institute, McGill University, Montréal, Quebec, Canada; Department of Neurology and Neurosurgery, McGill University, Montréal, Quebec, Canada
| | - Jennifer A Ruskey
- Montreal Neurological Institute, McGill University, Montréal, Quebec, Canada; Department of Neurology and Neurosurgery, McGill University, Montréal, Quebec, Canada
| | - Hallgeir Jonvik
- Department of Clinical and Movement Neurosciences, Institute of Neurology, University College London, London, UK
| | - Manuela M X Tan
- Department of Clinical and Movement Neurosciences, Institute of Neurology, University College London, London, UK
| | - Sara Bandres-Ciga
- Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA; Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain
| | - Sharon Hassin-Baer
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Neurology, Sheba Medical Center, Tel HaShomer, Israel; Movement Disorders Institute, Sheba Medical Center, Tel HaShomer, Israel
| | - Kathrin Brockmann
- Hertie Institute for Clinical Brain Research and German Center for Neurodegenerative Diseases, University Clinic Tu¨bingen, Tu¨bingen, Germany
| | - Jon Infante
- Service of Neurology, University Hospital "Marqués de Valdecilla (IDIVAL)", University of Cantabria; "Centro de Investigación Biomédica en Red de Enfermedades, Neurodegenerativas (CIBERNED)", Santander, Spain
| | - Eduardo Tolosa
- Laboratory of Parkinson Disease & Other Neurodegenerative Movement Disorders, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) - Hospital Clínic de Barcelona, Barcelona, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018-ISCIII), Barcelona, Spain
| | - Mario Ezquerra
- Laboratory of Parkinson Disease & Other Neurodegenerative Movement Disorders, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) - Hospital Clínic de Barcelona, Barcelona, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018-ISCIII), Barcelona, Spain
| | - Sawssan Ben Romdhan
- Research Unit in Neurogenetics, Clinical Investigation Center (CIC) at the CHU Habib Bourguiba, Sfax, Tunisia
| | | | | | - Chokri Mhiri
- Frantz Fanon Hospital, CHU Blida, Blida, Algeria
| | - John Hardy
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, Queen Square, London WC1N 3BG, UK; UK Dementia Research Institute at UCL and Department of Neurodegenerative Disease, UCL Institute of Neurology, University College London, London, UK; Reta Lila Weston Institute, UCL Queen Square Institute of Neurology, 1 Wakefield Street, London WC1N 1PJ, UK; UCL Movement Disorders Centre, University College London, London, UK; Institute for Advanced Study, The Hong Kong University of Science and Technology, Hong Kong SAR, China
| | - Andrew B Singleton
- Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA
| | - Roy N Alcalay
- Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY, USA; Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University, New York, NY, USA
| | - Thomas Gasser
- Department for Neurodegenerative Diseases, Hertie Institute for Clinical Brain Research, University of Tu¨bingen, Tu¨bingen, Germany; German Center for Neurodegenerative Diseases (DZNE), Tu¨bingen, Germany
| | - Donald G Grosset
- Department of Neurology, Institute of Neurological Sciences, Queen Elizabeth University Hospital, Glasgow, UK; Institute of Neuroscience & Psychology, University of Glasgow, Glasgow, UK
| | - Nigel M Williams
- Division of Psychological Medicine & Clinical Neuroscience, School of Medicine, Cardiff University, Cardiff, UK
| | - Alan Pittman
- Department of Clinical Genetics, St George's, University of London, London, UK
| | - Ziv Gan-Or
- Montreal Neurological Institute, McGill University, Montréal, Quebec, Canada; Department of Neurology and Neurosurgery, McGill University, Montréal, Quebec, Canada; Department of Human Genetics, McGill University, Montreal, Quebec, Canada
| | - Ruben Fernandez-Santiago
- Laboratory of Parkinson Disease & Other Neurodegenerative Movement Disorders, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) - Hospital Clínic de Barcelona, Barcelona, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED: CB06/05/0018-ISCIII), Barcelona, Spain
| | - Alexis Brice
- Research Unit U1127 at INSERM, Research Unit UMR 7225 at the French National Centre for Scientific Research (CNRS) Research Unit UMR_1127 at Sorbonne Université, Institutet du Cerveau et de la Moëlle épinière (ICM), Paris, France
| | - Suzanne Lesage
- Research Unit U1127 at INSERM, Research Unit UMR 7225 at the French National Centre for Scientific Research (CNRS) Research Unit UMR_1127 at Sorbonne Université, Institutet du Cerveau et de la Moëlle épinière (ICM), Paris, France
| | - Matthew Farrer
- Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Nicholas Wood
- Department of Clinical and Movement Neurosciences, Institute of Neurology, University College London, London, UK
| | - Huw R Morris
- Department of Clinical and Movement Neurosciences, Institute of Neurology, University College London, London, UK.
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24
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Stute L, Krüger R. [Emerging concepts for precision medicine in Parkinson's disease with focus on genetics]. FORTSCHRITTE DER NEUROLOGIE-PSYCHIATRIE 2020; 88:558-566. [PMID: 32485745 DOI: 10.1055/a-1149-2204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The diverse and highly individual presentations of Parkinson's disease (PD) as a complex combination of motor and non-motor symptoms are being increasingly well characterised not least through large patient cohorts applying deep phenotyping. However, in terms of treatment of PD, the approach is uniform and purely symptomatic. Better stratification strategies with better precision medicine approaches offer opportunities to improve symptomatic treatment, define first causative therapies and provide more patient-centred care. Insight from targeted therapies for monogenic forms of PD aiming at neuroprotection may pave the way for new mechanism-based interventions also for the more common idiopathic PD. Improved stratification of patients may support symptomatic treatments by predicting treatment efficacy and long-term benefit of current pharmacological or neuromodulatory therapies, e.g. in the context of emerging pharmacogenomic knowledge. Based on asymptomatic carriers with monogenic PD or patients with REM sleep behaviour disorder (RBD), first options for applying preventive treatments emerge. The implications of these treatment strategies in relation to disease progression, and the prospects of their implementation in clinical practice need to be addressed.
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Affiliation(s)
- Lara Stute
- Parkinson Research Clinic, Centre Hospitalier de Luxembourg (CHL), Luxembourg, Luxembourg.,Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Esch-Sur-Alzette, Luxembourg
| | - Rejko Krüger
- Parkinson Research Clinic, Centre Hospitalier de Luxembourg (CHL), Luxembourg, Luxembourg.,Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Esch-Sur-Alzette, Luxembourg.,Transversal Translational Medicine, Luxembourg Institute of Health (LIH), Strassen, Luxembourg
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25
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Aasly JO. Long-Term Outcomes of Genetic Parkinson's Disease. J Mov Disord 2020; 13:81-96. [PMID: 32498494 PMCID: PMC7280945 DOI: 10.14802/jmd.19080] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 03/23/2020] [Indexed: 12/12/2022] Open
Abstract
Parkinson’s disease (PD) is a progressive neurodegenerative disorder that affects 1–2% of people by the age of 70 years. Age is the most important risk factor, and most cases are sporadic without any known environmental or genetic causes. Since the late 1990s, mutations in the genes SNCA, PRKN, LRRK2, PINK1, DJ-1, VPS35, and GBA have been shown to be important risk factors for PD. In addition, common variants with small effect sizes are now recognized to modulate the risk for PD. Most studies in genetic PD have focused on finding new genes, but few have studied the long-term outcome of patients with the specific genetic PD forms. Patients with known genetic PD have now been followed for more than 20 years, and we see that they may have distinct and different prognoses. New therapeutic possibilities are emerging based on the genetic cause underlying the disease. Future medication may be based on the pathophysiology individualized to the patient’s genetic background. The challenge is to find the biological consequences of different genetic variants. In this review, the clinical patterns and long-term prognoses of the most common genetic PD variants are presented.
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Affiliation(s)
- Jan O Aasly
- Department of Neurology, St. Olav's Hospital, Trondheim, Norway.,Department of Neuroscience, Norwegian University of Science and Technology, Trondheim, Norway
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26
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Clinical characterization of patients with leucine-rich repeat kinase 2 genetic variants in Japan. J Hum Genet 2020; 65:771-781. [PMID: 32398759 DOI: 10.1038/s10038-020-0772-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 04/27/2020] [Accepted: 04/27/2020] [Indexed: 12/27/2022]
Abstract
Variants of leucine-rich repeat kinase 2 (LRRK2) are the most common genetic cause of familial Parkinson's disease (PD). We aimed to investigate the genetic and clinical features of patients with PD and LRRK2 variants in Japan by screening for LRRK2 variants in three exons (31, 41, and 48), which include the following pathogenic mutations: p.R1441C, p.R1441G, p.R1441H, p.G2019S, and p.I2020T. Herein, we obtained data containing LRRK2 variants derived from 1402 patients with PD (653 with sporadic PD and 749 with familial PD). As a result, we successfully detected pathogenic variants (four with p.R1441G, five with p.R1441H, seven with p.G2019S, and seven with p.I2020T) and other rare variants (two with p.V1447M, one with p.V1450I, one with p.T1491delT, and one with p.H2391Q). Two risk variants, p.P1446L and p.G2385R, were found in 10 and 146 patients, respectively. Most of the patients presented the symptoms resembling a common type of PD, such as middle-aged onset, tremor, akinesia, rigidity, and gait disturbance. Dysautonomia, cognitive decline, and psychosis were rarely observed. Each known pathogenic variant had a different founder in our cohort proven by haplotype analysis. The generation study revealed that the LRRK2 variants p.G2019S and p.I2020T were derived 3500 and 1300 years ago, respectively. Our findings present overviews of the prevalence and distribution of LRRK2 variants in Japanese cohorts.
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27
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Hustad E, Aasly JO. Clinical and Imaging Markers of Prodromal Parkinson's Disease. Front Neurol 2020; 11:395. [PMID: 32457695 PMCID: PMC7225301 DOI: 10.3389/fneur.2020.00395] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 04/17/2020] [Indexed: 12/16/2022] Open
Abstract
The diagnosis of Parkinson's disease (PD) relies on the clinical effects of dopamine deficiency, including bradykinesia, rigidity and tremor, usually manifesting asymmetrically. Misdiagnosis is common, due to overlap of symptoms with other neurodegenerative disorders such as multiple system atrophy and progressive supranuclear palsy, and only autopsy can definitively confirm the disease. Motor deficits generally appear when 50–60% of dopaminergic neurons in the substantia nigra are already lost, limiting the effectiveness of potential neuroprotective therapies. Today, we consider PD to be not just a movement disorder, but rather a complex syndrome non-motor symptoms (NMS) including disorders of sleep-wake cycle regulation, cognitive impairment, disorders of mood and affect, autonomic dysfunction, sensory symptoms and pain. Symptomatic LRRK2 mutation carriers share non-motor features with individuals with sporadic PD, including hyposmia, constipation, impaired color discrimination, depression, and sleep disturbance. Following the assumption that the pre-symptomatic gene mutation carriers will eventually exhibit clinical symptoms, their neuroimaging results can be extended to the pre-symptomatic stage of PD. The long latent phase of PD, termed prodromal-PD, represents an opportunity for early recognition of incipient PD. Early recognition could allow initiation of possible neuroprotective therapies at a stage when therapies might be most effective. The number of markers with the sufficient level of evidence to be included in the MDS research criteria for prodromal PD have increased during the last 10 years. Here, we review the approach to prodromal PD, with an emphasis on clinical and imaging markers and report results from our neuroimaging study, a retrospective evaluation of a cohort of 39 participants who underwent DAT-SPECT scan as part of their follow up. The study was carried out to see if it was possible to detect subclinical signs in the preclinical (neurodegenerative processes have commenced, but there are no evident symptoms or signs) and prodromal (symptoms and signs are present, but are yet insufficient to define disease) stages of PD.
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Affiliation(s)
- Eldbjørg Hustad
- Department of Neurology, St. Olavs Hospital, Trondheim, Norway.,Department of Neuromedicine and Movement Science (INB), Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Jan O Aasly
- Department of Neurology, St. Olavs Hospital, Trondheim, Norway.,Department of Neuromedicine and Movement Science (INB), Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
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Gan SR, Figueroa KP, Xu HL, Perlman S, Wilmot G, Gomez CM, Schmahmann J, Paulson H, Shakkottai VG, Ying SH, Zesiewicz T, Bushara K, Geschwind MD, Xia G, Subramony SH, Rosenthal L, Ashizawa T, Pulst SM, Wang N, Kuo SH. The impact of ethnicity on the clinical presentations of spinocerebellar ataxia type 3. Parkinsonism Relat Disord 2020; 72:37-43. [PMID: 32105964 DOI: 10.1016/j.parkreldis.2020.02.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 02/14/2020] [Accepted: 02/14/2020] [Indexed: 01/03/2023]
Abstract
BACKGROUND For a variety of sporadic neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease and amyotrophic lateral sclerosis, it is well-established that ethnicity does affect the disease phenotypes. However, how ethnicity contributes to the clinical symptoms and disease progressions in monogenetic disorders, such as spinocerebellar ataxia type 3 (SCA3), remains less studied. METHODS We used multivariable linear and logistical regression models in 257 molecularly-confirmed SCA3 patients (66 Caucasians, 43 African Americans, and 148 Asians [composed of 131 Chinese and 17 Asian Americans]) to explore the influence of ethnicity on age at onset (AAO), ataxia severity, and non-ataxia symptoms (i.e. depression, tremor, and dystonia). RESULTS We found that Asians had significantly later AAO, compared to Caucasians (β = 4.75, p = 0.000) and to African Americans (β = 6.64, p = 0.000) after adjusting for the pathological CAG repeat numbers in ATXN3. African Americans exhibited the most severe ataxia as compared to Caucasians (β = 3.81, p = 0.004) and Asians (β = 4.39, p = 0.001) after taking into consideration of the pathological CAG repeat numbers in ATXN3 and disease duration. Caucasians had a higher prevalence of depression than African Americans (β = 1.23, p = 0.040). Ethnicity had no influence on tremor or dystonia. CONCLUSIONS Ethnicity plays an important role in clinical presentations of SCA3 patients, which could merit further clinical studies and public health consideration. These results highlight the role of ethnicity in monogenetic, neurodegenerative disorders.
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Affiliation(s)
- Shi-Rui Gan
- Department of Neurology and Institute of Neurology, First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Karla P Figueroa
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
| | - Hao-Ling Xu
- Department of Neurology and Institute of Neurology, First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Susan Perlman
- Department of Neurology, University of California, Los Angeles, CA, USA
| | - George Wilmot
- Department of Neurology, Emory University, Atlanta, GA, USA
| | | | - Jeremy Schmahmann
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Henry Paulson
- Department of Neurology, University of Michigan, Ann Arbor, MI, USA
| | | | - Sarah H Ying
- Department of Neurology, Johns Hopkins University, Baltimore, MD, USA
| | - Theresa Zesiewicz
- Department of Neurology, University of South Florida, Tampa, FL, USA
| | - Khalaf Bushara
- Department of Neurology, University of Minnesota, Minneapolis, MN, USA
| | | | - Guangbin Xia
- Department of Neurology, School of Medicine, University of New Mexico, Albuquerque, NM, USA
| | - S H Subramony
- Department of Neurology and McKnight Brain Institute, University of Florida, Gainesville, FL, USA
| | - Liana Rosenthal
- Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | | | - Stefan M Pulst
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
| | - Ning Wang
- Department of Neurology and Institute of Neurology, First Affiliated Hospital, Fujian Medical University, Fuzhou, China.
| | - Sheng-Han Kuo
- Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY, USA.
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Tolosa E, Vila M, Klein C, Rascol O. LRRK2 in Parkinson disease: challenges of clinical trials. Nat Rev Neurol 2020; 16:97-107. [PMID: 31980808 DOI: 10.1038/s41582-019-0301-2] [Citation(s) in RCA: 250] [Impact Index Per Article: 62.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/03/2019] [Indexed: 12/27/2022]
Abstract
One of the most common monogenic forms of Parkinson disease (PD) is caused by mutations in the LRRK2 gene that encodes leucine-rich repeat kinase 2 (LRRK2). LRRK2 mutations, and particularly the most common mutation Gly2019Ser, are observed in patients with autosomal dominant PD and in those with apparent sporadic PD, who are clinically indistinguishable from those with idiopathic PD. The discoveries that pathogenic mutations in the LRRK2 gene increase LRRK2 kinase activity and that small-molecule LRRK2 kinase inhibitors can be neuroprotective in preclinical models of PD have placed LRRK2 at the centre of disease modification efforts in PD. Recent investigations also suggest that LRRK2 has a role in the pathogenesis of idiopathic PD and that LRRK2 therapies might, therefore, be beneficial in this common subtype of PD. In this Review, we describe the characteristics of LRRK2-associated PD that are most relevant to the development of LRRK2-targeted therapies and the design and implementation of clinical trials. We highlight strategies for correcting the effects of mutations in the LRRK2 gene, focusing on how to identify which patients are the optimal candidates and how to decide on the timing of such trials. In addition, we discuss challenges in implementing trials of disease-modifying treatment in people who carry LRRK2 mutations.
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Affiliation(s)
- Eduardo Tolosa
- Parkinson and Movement Disorders Unit, Neurology Service, Hospital Clinic of Barcelona, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), University of Barcelona, Barcelona, Spain. .,Network Center for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Barcelona, Spain.
| | - Miquel Vila
- Network Center for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Barcelona, Spain.,Neurodegenerative Diseases Research Group, Vall d'Hebron Research Institute (VHIR), Autonomous University of Barcelona, Barcelona, Spain.,Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
| | - Christine Klein
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Olivier Rascol
- Clinical Investigation Center CIC1436, Departments of Clinical Pharmacology and Neurosciences, NS-Park/FCRIN network and NeuroToul Center of Excellence for Neurodegeneration, INSERM, University Hospital of Toulouse and University of Toulouse, Toulouse, France
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30
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Nickels SL, Walter J, Bolognin S, Gérard D, Jaeger C, Qing X, Tisserand J, Jarazo J, Hemmer K, Harms A, Halder R, Lucarelli P, Berger E, Antony PMA, Glaab E, Hankemeier T, Klein C, Sauter T, Sinkkonen L, Schwamborn JC. Impaired serine metabolism complements LRRK2-G2019S pathogenicity in PD patients. Parkinsonism Relat Disord 2019; 67:48-55. [PMID: 31621607 DOI: 10.1016/j.parkreldis.2019.09.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 08/14/2019] [Accepted: 09/15/2019] [Indexed: 01/09/2023]
Abstract
Parkinson's disease (PD) is a multifactorial disorder with complex etiology. The most prevalent PD associated mutation, LRRK2-G2019S is linked to familial and sporadic cases. Based on the multitude of genetic predispositions in PD and the incomplete penetrance of LRRK2-G2019S, we hypothesize that modifiers in the patients' genetic background act as susceptibility factors for developing PD. To assess LRRK2-G2019S modifiers, we used human induced pluripotent stem cell-derived neuroepithelial stem cells (NESCs). Isogenic controls distinguish between LRRK2-G2019S dependent and independent cellular phenotypes. LRRK2-G2019S patient and healthy mutagenized lines showed altered NESC self-renewal and viability, as well as impaired serine metabolism. In patient cells, phenotypes were only partly LRRK2-G2019S dependent, suggesting a significant contribution of the genetic background. In this context we identified the gene serine racemase (SRR) as a novel patient-specific, developmental, genetic modifier contributing to the aberrant phenotypes. Its enzymatic product, d-serine, rescued altered cellular phenotypes. Susceptibility factors in the genetic background, such as SRR, could be new targets for early PD diagnosis and treatment.
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Affiliation(s)
- Sarah Louise Nickels
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg; Life Sciences Research Unit (LSRU), Systems Biology Group, University of Luxembourg, L-4367, Belvaux, Luxembourg; Integrated Biobank of Luxembourg (IBBL), Luxembourg Institute of Health, L-3555, Dudelange, Luxembourg
| | - Jonas Walter
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Silvia Bolognin
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Deborah Gérard
- Life Sciences Research Unit (LSRU), Systems Biology Group, University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Christian Jaeger
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Xiaobing Qing
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Johan Tisserand
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Javier Jarazo
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Kathrin Hemmer
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Amy Harms
- Leiden Academic Centre for Drug Research (LACDR), Analytical Biosciences, Leiden University, NL-2333, CC Leiden, Netherlands
| | - Rashi Halder
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Philippe Lucarelli
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Emanuel Berger
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Paul M A Antony
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Enrico Glaab
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Thomas Hankemeier
- Leiden Academic Centre for Drug Research (LACDR), Analytical Biosciences, Leiden University, NL-2333, CC Leiden, Netherlands
| | - Christine Klein
- Institute of Neurogenetics, University of Lübeck, D-23538, Lübeck, Germany
| | - Thomas Sauter
- Life Sciences Research Unit (LSRU), Systems Biology Group, University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Lasse Sinkkonen
- Life Sciences Research Unit (LSRU), Systems Biology Group, University of Luxembourg, L-4367, Belvaux, Luxembourg
| | - Jens Christian Schwamborn
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, L-4367, Belvaux, Luxembourg.
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31
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Garrido A, Fairfoul G, Tolosa ES, Martí MJ, Green A. α-synuclein RT-QuIC in cerebrospinal fluid of LRRK2-linked Parkinson's disease. Ann Clin Transl Neurol 2019; 6:1024-1032. [PMID: 31211166 PMCID: PMC6562027 DOI: 10.1002/acn3.772] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 03/04/2019] [Indexed: 11/17/2022] Open
Abstract
Background Leucine‐rich kinase 2 (LRRK2)‐linked Parkinson's disease (PD) is clinically indistinguishable from idiopathic PD (IPD). A pleiotropic neuropathology has been recognized but the majority of studies in LRRK2 p.G2019S patients reveal Lewy‐type synucleinopathy as its principal histological substrate. To date no in vivo biomarkers of synucleinopathy have been found in LRRK2 mutation carriers. Objectives We used real‐time quaking‐induced conversion (RT‐QuIC) technique to assess the presence of alpha‐synuclein (a‐syn) aggregates in cerebrospinal fluid (CSF) of LRRK2 p.G2019S carriers. Methods CSF samples of 51 subjects were analyzed: 15 LRRK2 p.G2019S PD, 10 IPD, 16 LRRK2 p.G2019S nonmanifesting carriers (NMC) and 10 healthy controls. The presence of parkinsonism and prodromal symptoms was assessed in all study subjects. Results Forty percent (n = 6) LRRK2‐PD, and 18.8% (n = 3) LRRK2‐NMC had a positive a‐syn RT‐QuIC response. RT‐QuIC detected IPD with 90% sensitivity and 80% specificity. No clinical differences were detected between LRRK2‐PD patients with positive and negative RT‐QuIC. A positive RT‐QuIC result in LRRK2‐NMC occurred in a higher proportion of subjects meeting the Movement Disorder Society research criteria for prodromal PD. Interpretation RT‐QuIC detects a‐syn aggregation in CSF in a significant number of patients with LRRK2‐PD, but less frequently than in IPD. A small percentage of LRRK2‐NMC tested also positive. If appropriately validated in long‐term studies with large number of mutation carriers, and hopefully, postmortem or in vivo confirmation of histopathology, RT‐QuIC could contribute to the selection of candidates to receive disease modifying drugs, in particular treatments targeting a‐syn deposition.
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Affiliation(s)
- Alicia Garrido
- Parkinson's Disease and Movement Disorders Unit Institut Clínic de Neurociències Hospital Clinic de Barcelona Barcelona Spain.,Centre for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED) Madrid Spain
| | - Graham Fairfoul
- The National CJD Research & Surveillance Unit Centre for Clinical Brain Sciences University of Edinburgh Edinburgh EH4 2XU United Kingdom
| | - Eduardo S Tolosa
- Centre for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED) Madrid Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) University of Barcelona (UB) Barcelona Spain
| | - Maria José Martí
- Parkinson's Disease and Movement Disorders Unit Institut Clínic de Neurociències Hospital Clinic de Barcelona Barcelona Spain.,Centre for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED) Madrid Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) University of Barcelona (UB) Barcelona Spain
| | - Alison Green
- The National CJD Research & Surveillance Unit Centre for Clinical Brain Sciences University of Edinburgh Edinburgh EH4 2XU United Kingdom
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32
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Biomarkers of Parkinson's disease: 20 years later. J Neural Transm (Vienna) 2019; 126:803-813. [PMID: 30949837 DOI: 10.1007/s00702-019-02001-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 03/27/2019] [Indexed: 12/17/2022]
Abstract
Despite intensive effort, biomarker research for the detection of prodromal stage, diagnosis and progression of Parkinson's disease (PD) falls short of expectations. This article reviews the attempts in the last 20 years to find a biomarker, addresses challenges along the biomarker search and suggests the steps that should be taken to overcome these challenges. Although several biomarkers are currently available, none of them is specific enough for diagnosis, prediction of future PD or disease progression. The main reason for the failure finding a strong biomarker seems to be drastic heterogeneity of PD, which exhibits itself in all domains; from the clinic to pathophysiology or genetics. The diversity in patient selection, assessment methods or outcomes in biomarker studies also limit the interpretation and generalizability of the data. In search of a reliable biomarker, consideration of novel approaches encompassing individual demographic, clinical, genetic, epigenetic and environmental differences, employment of strategies enabling marker combinations, designing multicenter studies with compatible assessment methods, integration of data from preclinical domains and utilization of novel technology-based assessments are necessary.
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33
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Zeuner KE, Schäffer E, Hopfner F, Brüggemann N, Berg D. Progress of Pharmacological Approaches in Parkinson's Disease. Clin Pharmacol Ther 2019; 105:1106-1120. [PMID: 30661251 DOI: 10.1002/cpt.1374] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 12/22/2018] [Indexed: 12/20/2022]
Abstract
The progressive neurodegenerative process in Parkinson's disease (PD) is not restricted to dopaminergic midbrain neurons but involves the entire nervous system. In this review, we outline established treatment options at different disease stages and address new therapeutic approaches. These include, based on recent advances in the understanding of the pathophysiology of PD, genetic and disease-modifying approaches to reduce abnormal accumulation and aggregation of alpha-synuclein (aSYN), mitochondrial dysfunction, and dysfunction of lysosomal proteins. Moreover, we highlight clinical trials to reduce neuroinflammation and increase neurorestoration.
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Affiliation(s)
- Kirsten E Zeuner
- Department of Neurology, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Eva Schäffer
- Department of Neurology, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Franziska Hopfner
- Department of Psychiatry and Psychotherapy, Hospital of the University of Munich, Munich, Germany
| | - Norbert Brüggemann
- Department of Neurology, University of Lübeck, Lübeck, Germany.,Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Daniela Berg
- Department of Neurology, Christian-Albrechts-University Kiel, Kiel, Germany
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Abstract
An understanding of the genetic etiology of Parkinson disease (PD) has become imperative for the modern-day neurologist. Although genetic forms cause only a minority of PD, the disease mechanisms they elucidate advance the understanding of idiopathic cases. Moreover, recently identified susceptibility variants contribute to complex-etiology PD and broaden the contribution of genetics beyond familial and early-onset cases. Dominantly inherited monogenic forms mimic idiopathic PD and are caused by mutations or copy number variations of SNCA, LRRK2, and VPS35. On the other hand, early-onset forms are associated with PARKIN, PINK1, and DJ1 mutations, nominating mitochondrial dysfunction and oxidative stress as another important molecular pathway in the causation of the disease, in addition to alpha-synuclein accumulation. Common variants in GBA are consistently identified by association studies and may be considered to be a major risk gene for PD, with markedly reduced penetrance. Other genes have been proposed to be associated with PD; however, these only cause very rare forms, if at all. Current guidelines recommend testing for LRRK2 variants in familial PD or in specific populations (ancestry), and for the recessive genes in early-onset PD. However, gene panels have made testing for multiple forms of genetic PD a viable approach.
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Affiliation(s)
- Aloysius Domingo
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Christine Klein
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany.
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35
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Warø BJ, Aasly JO. Exploring cancer in LRRK2 mutation carriers and idiopathic Parkinson's disease. Brain Behav 2018; 8:e00858. [PMID: 29568677 PMCID: PMC5853627 DOI: 10.1002/brb3.858] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 09/17/2017] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES To compare the risk of non-skin cancer in LRRK2 mutation carriers and individuals with idiopathic Parkinson's disease (iPD), explore the age at which LRRK2 mutation carriers have cancer compared to iPD subjects, and clarify whether certain cancers are more closely associated with the LRRK2 mutation than iPD. MATERIALS AND METHODS Demographic data and cancer outcomes from 830 iPD patients and 103 LRRK2 mutation carriers (27 with PD) were retrospectively collected. Oncologic data were obtained from the Cancer Registry of Norway and included cancer type and age at cancer. All study participants were of Norwegian ethnicity. RESULTS LRRK2 mutation carriers have increased risk of non-skin cancer compared with iPD subjects (OR 2.09; 95% CI 1.16-3.77; p = .015). A significant association was found between the mutation and breast cancer in women (OR 4.58; 95% CI 1.45-14.51; p = .010). No other associations between harboring a LRRK2 mutation and specific cancer types were uncovered. CONCLUSION LRRK2 mutation carriers have an increased risk of non-skin cancer compared with iPD subjects, which was mainly driven by the association between harboring the mutation and breast cancer in women. The increased risk is likely independent of ethnicity.
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Affiliation(s)
- Bjørg Johanne Warø
- Department of Neuroscience Norwegian University of Science and Technology Trondheim Norway.,Department of Neurology St. Olav's Hospital Trondheim Norway
| | - Jan O Aasly
- Department of Neuroscience Norwegian University of Science and Technology Trondheim Norway.,Department of Neurology St. Olav's Hospital Trondheim Norway
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36
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Al-Rumayyan A, Klein C, Alfadhel M. Early-Onset Parkinsonism: Case Report and Review of the Literature. Pediatr Neurol 2017; 67:102-106.e1. [PMID: 28062148 DOI: 10.1016/j.pediatrneurol.2015.06.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 06/05/2015] [Accepted: 06/06/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Early-onset parkinsonism can be caused by PTEN-induced putative kinase 1 (PINK1) gene defects and is usually characterized by an age of onset in the fourth decade of life, slow disease progression, resting tremor, rigidity, bradykinesia, postural instability, and levodopa-induced dyskinesia. METHODS We evaluated a child with early-onset symptoms and performed a literature review for previously reported examples of children aged 18 years or less with PINK1 gene defects. RESULTS We describe a five-year-old boy with autosomal recessive early-onset parkinsonism caused by a homozygous missense mutation in the PINK1 gene. This is the youngest individual yet reported with early-onset parkinsonism. CONCLUSION PINK1-type of early-onset parkinsonism can occur in very young patients, and phenotypic expression of PINK1 mutations may depend on age of onset and ethnicity.
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Affiliation(s)
- Ahmed Al-Rumayyan
- King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia; Neurology Division, Department of Pediatrics, King Abdulaziz Medical City, Riyadh, Saudi Arabia.
| | | | - Majid Alfadhel
- King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia; Genetics Division, Department of Pediatrics, King Abdulaziz Medical City, Riyadh, Saudi Arabia
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37
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Trinh J, Gustavsson EK, Vilariño-Güell C, Bortnick S, Latourelle J, McKenzie MB, Tu CS, Nosova E, Khinda J, Milnerwood A, Lesage S, Brice A, Tazir M, Aasly JO, Parkkinen L, Haytural H, Foroud T, Myers RH, Sassi SB, Hentati E, Nabli F, Farhat E, Amouri R, Hentati F, Farrer MJ. DNM3 and genetic modifiers of age of onset in LRRK2 Gly2019Ser parkinsonism: a genome-wide linkage and association study. Lancet Neurol 2016; 15:1248-1256. [PMID: 27692902 DOI: 10.1016/s1474-4422(16)30203-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 07/28/2016] [Accepted: 08/04/2016] [Indexed: 12/31/2022]
Abstract
BACKGROUND Leucine-rich repeat kinase 2 (LRRK2) mutation 6055G→A (Gly2019Ser) accounts for roughly 1% of patients with Parkinson's disease in white populations, 13-30% in Ashkenazi Jewish populations, and 30-40% in North African Arab-Berber populations, although age of onset is variable. Some carriers have early-onset parkinsonism, whereas others remain asymptomatic despite advanced age. We aimed to use a genome-wide approach to identify genetic variability that directly affects LRRK2 Gly2019Ser penetrance. METHODS Between 2006 and 2012, we recruited Arab-Berber patients with Parkinson's disease and their family members (aged 18 years or older) at the Mongi Ben Hamida National Institute of Neurology (Tunis, Tunisia). Patients with Parkinson's disease were diagnosed by movement disorder specialists in accordance with the UK Parkinson's Disease Society Brain Bank criteria, without exclusion of familial parkinsonism. LRRK2 carrier status was confirmed by Sanger sequencing or TaqMan SNP assays-on-demand. We did genome-wide linkage analysis using data from multi-incident Arab-Berber families with Parkinson's disease and LRRK2 Gly2019Ser (with both affected and unaffected family members). We assessed Parkinson's disease age of onset both as a categorical variable (dichotomised by median onset) and as a quantitative trait. We used data from another cohort of unrelated Tunisian LRRK2 Gly2019Ser carriers for subsequent locus-specific genotyping and association analyses. Whole-genome sequencing in a subset of 14 unrelated Arab-Berber individuals who were LRRK2 Gly2019Ser carriers (seven with early-onset disease and seven elderly unaffected individuals) subsequently informed imputation and haplotype analyses. We replicated the findings in separate series of LRRK2 Gly2019Ser carriers originating from Algeria, France, Norway, and North America. We also investigated associations between genotype, gene, and protein expression in human striatal tissues and murine LRRK2 Gly2019Ser cortical neurons. FINDINGS Using data from 41 multi-incident Arab-Berber families with Parkinson's disease and LRRK2 Gly2019Ser (150 patients and 103 unaffected family members), we identified significant linkage on chromosome 1q23.3 to 1q24.3 (non-parametric logarithm of odds score 2·9, model-based logarithm of odds score 4·99, θ=0 at D1S2768). In a cohort of unrelated Arab-Berber LRRK2 Gly2019Ser carriers, subsequent association mapping within the linkage region suggested genetic variability within DNM3 as an age-of-onset modifier of disease (n=232; rs2421947; haplotype p=1·07 × 10-7). We found that DNM3 rs2421947 was a haplotype tag for which the median onset of LRRK2 parkinsonism in GG carriers was 12·5 years younger than that of CC carriers (Arab-Berber cohort, hazard ratio [HR] 1·89, 95% CI 1·20-2·98). Replication analyses in separate series from Algeria, France, Norway, and North America (n=263) supported this finding (meta-analysis HR 1·61, 95% CI 1·15-2·27, p=0·02). In human striatum, DNM3 expression varied as a function of rs2421947 genotype, and dynamin-3 localisation was perturbed in murine LRRK2 Gly2019Ser cortical neurons. INTERPRETATION Genetic variability in DNM3 modifies age of onset for LRRK2 Gly2019Ser parkinsonism and informs disease-relevant translational neuroscience. Our results could be useful in genetic counselling for carriers of this mutation and in clinical trial design. FUNDING The Canada Excellence Research Chairs (CERC), Leading Edge Endowment Fund (LEEF), Don Rix BC Leadership Chair in Genetic Medicine, National Institute on Aging, National Institute of Neurological Disorders and Stroke, the Michael J Fox Foundation, Mayo Foundation, the Roger de Spoelberch Foundation, and GlaxoSmithKline.
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Affiliation(s)
- Joanne Trinh
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Emil K Gustavsson
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada; Department of Neurology, St Olav's Hospital, Trondheim, Norway
| | - Carles Vilariño-Güell
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Stephanie Bortnick
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Jeanne Latourelle
- Department of Neurology, Boston University School of Medicine, Boston, MA, USA
| | - Marna B McKenzie
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Chelsea Szu Tu
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Ekaterina Nosova
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Jaskaran Khinda
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Austen Milnerwood
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Suzanne Lesage
- Sorbonne Universités, UPMC Univ Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France
| | - Alexis Brice
- Sorbonne Universités, UPMC Univ Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; AP-HP, Hôpital de la Salpêtrière, Department of Genetics and Cytogenetics, Paris, France
| | - Meriem Tazir
- Service de Neurologie CHU Mustapha, Alger, Algeria
| | - Jan O Aasly
- Department of Neurology, St Olav's Hospital, Trondheim, Norway
| | - Laura Parkkinen
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Hazal Haytural
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Tatiana Foroud
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Richard H Myers
- Genome Science Institute, Boston University School of Medicine, Boston, MA, USA
| | - Samia Ben Sassi
- Mongi Ben Hamida National Institute of Neurology, La Rabta, Tunis, Tunisia
| | - Emna Hentati
- Mongi Ben Hamida National Institute of Neurology, La Rabta, Tunis, Tunisia
| | - Fatma Nabli
- Mongi Ben Hamida National Institute of Neurology, La Rabta, Tunis, Tunisia
| | - Emna Farhat
- Mongi Ben Hamida National Institute of Neurology, La Rabta, Tunis, Tunisia
| | - Rim Amouri
- Mongi Ben Hamida National Institute of Neurology, La Rabta, Tunis, Tunisia
| | - Fayçal Hentati
- Mongi Ben Hamida National Institute of Neurology, La Rabta, Tunis, Tunisia
| | - Matthew J Farrer
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada.
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Dzamko N, Rowe DB, Halliday GM. Increased peripheral inflammation in asymptomatic leucine-rich repeat kinase 2 mutation carriers. Mov Disord 2016; 31:889-97. [PMID: 26917005 DOI: 10.1002/mds.26529] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 11/13/2015] [Accepted: 12/13/2015] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND We aimed to determine if peripheral or central inflammatory cytokines are altered in healthy subjects carrying a leucine-rich repeat kinase 2 (LRRK2) G2019S mutation, and thus genetically at risk of Parkinson's disease (PD). We also aimed to identify differences in inflammatory cytokines between LRRK2 G2019S-associated and idiopathic PD once the disease manifests. METHODS Participants were genetically screened and phenotyped, and biological samples were collected and stored by the Michael J. Fox Foundation LRRK2 Cohort Consortium. Serum samples and matching clinical data were obtained from 71 asymptomatic LRRK2 G2019S mutation carriers (CSF n = 25), 75 neurologically normal controls (CSF n = 22), 75 idiopathic PD patients (CSF n = 29), and 76 PD patients with a LRRK2 G2019S mutation (CSF n = 20). Inflammatory cytokines were measured using multiplex enzyme-linked immunosorbent assays. RESULTS Serum levels of interleukin 1 beta could discriminate asymptomatic LRRK2 G2019S mutation carriers from controls, with a high inflammatory subgroup of carriers identified. This subgroup was significantly higher in a number of PD-implicated pro-inflammatory cytokines. Once PD had manifest, LRRK2 G2019S patients were discriminated from idiopathic PD by higher serum platelet-derived growth factor, and higher CSF vascular endothelial growth factor and interleukin 8. CONCLUSIONS The results suggest that peripheral inflammation is higher in a percentage of subjects carrying the LRRK2 G2019S mutation. Replication and longitudinal follow-up is required to determine whether the increased peripheral cytokines can predict clinical PD. Importantly, these biological changes were observed prior to the clinical manifestations thought to herald PD. © 2016 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Nicolas Dzamko
- School of Medical Sciences, University of NSW, Kensington, Australia.,Neuroscience Research Australia, Randwick, Australia
| | - Dominic B Rowe
- Faculty of Medicine and Health Sciences, Macquarie University, Australia
| | - Glenda M Halliday
- School of Medical Sciences, University of NSW, Kensington, Australia.,Neuroscience Research Australia, Randwick, Australia
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Grünewald A, Klein C. Urinary LRRK2 phosphorylation: Penetrating the thicket of Parkinson disease? Neurology 2016; 86:984-5. [PMID: 26865520 DOI: 10.1212/wnl.0000000000002438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Anne Grünewald
- From the Institute of Neurogenetics (A.G., C.K.), University of Lübeck; and Molecular and Functional Neurobiology Group (A.G.), Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Campus Belval, Belvaux, Luxembourg
| | - Christine Klein
- From the Institute of Neurogenetics (A.G., C.K.), University of Lübeck; and Molecular and Functional Neurobiology Group (A.G.), Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Campus Belval, Belvaux, Luxembourg.
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Foroud T, Smith D, Jackson J, Verbrugge J, Halter C, Wetherill L, Sims K, Xin W, Arnedo V, Lasch S, Marek K. Novel recruitment strategy to enrich for LRRK2 mutation carriers. Mol Genet Genomic Med 2015; 3:404-12. [PMID: 26436106 PMCID: PMC4585448 DOI: 10.1002/mgg3.151] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 03/27/2015] [Accepted: 03/31/2015] [Indexed: 11/29/2022] Open
Abstract
The LRRK2 G2019S mutation is found at higher frequency among Parkinson disease (PD) patients of Ashkenazi Jewish (AJ) ancestry. This study was designed to test whether an internet-based approach could be an effective approach to screen and identify mutation carriers. Individuals with and without PD of AJ ancestry were recruited and consented through an internet-based study website. An algorithm was applied to a series of screening questions to identify individuals at increased risk to carry the LRRK2 G2019S mutation. About 1000 individuals completed the initial screening. Around 741 qualified for mutation testing and 650 were tested. Seventy-two individuals carried at least one LRRK2 G2019S mutation; 38 with PD (12.5%) and 34 without (10.1%). Among the AJ PD participants, each affected first-degree relative increased the likelihood the individual was LRRK2+ [OR = 4.7; 95% confidence interval = (2.4-9.0)]. The same was not observed among the unaffected AJ subjects (P = 0.11). An internet-based approach successfully screened large numbers of individuals to identify those with risk factors increasing the likelihood that they carried a LRRK2 G2019S mutation. A similar approach could be implemented in other disorders to identify individuals for clinical trials, biomarker analyses and other types of research studies.
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Affiliation(s)
- Tatiana Foroud
- Department of Medical and Molecular Genetics, Indiana University School of MedicineIndianapolis, Indiana, 46202
| | - Danielle Smith
- Department of Medical and Molecular Genetics, Indiana University School of MedicineIndianapolis, Indiana, 46202
| | - Jacqueline Jackson
- Department of Medical and Molecular Genetics, Indiana University School of MedicineIndianapolis, Indiana, 46202
| | - Jennifer Verbrugge
- Department of Medical and Molecular Genetics, Indiana University School of MedicineIndianapolis, Indiana, 46202
| | - Cheryl Halter
- Department of Medical and Molecular Genetics, Indiana University School of MedicineIndianapolis, Indiana, 46202
| | - Leah Wetherill
- Department of Medical and Molecular Genetics, Indiana University School of MedicineIndianapolis, Indiana, 46202
| | - Katherine Sims
- Department of Neurology, Center for Human Genetic Research, Massachusetts General HospitalBoston, Massachusetts, 02114
| | - Winnie Xin
- Department of Neurology, Center for Human Genetic Research, Massachusetts General HospitalBoston, Massachusetts, 02114
| | | | - Shirley Lasch
- Institute for Neurodegenerative DisordersNew Haven, Connecticut, 06510
| | - Kenneth Marek
- Institute for Neurodegenerative DisordersNew Haven, Connecticut, 06510
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Wang Y, Liang B, Tong X, Marder K, Bressman S, Orr-Urtreger A, Giladi N, Zeng D. Efficient Estimation of Nonparametric Genetic Risk Function with Censored Data. Biometrika 2015; 102:515-532. [PMID: 26412864 PMCID: PMC4581539 DOI: 10.1093/biomet/asv030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
With an increasing number of causal genes discovered for complex human disorders, it is crucial to assess the genetic risk of disease onset for individuals who are carriers of these causal mutations and compare the distribution of age-at-onset with that in non-carriers. In many genetic epidemiological studies aiming at estimating causal gene effect on disease, the age-at-onset of disease is subject to censoring. In addition, some individuals' mutation carrier or non-carrier status can be unknown due to the high cost of in-person ascertainment to collect DNA samples or death in older individuals. Instead, the probability of these individuals' mutation status can be obtained from various sources. When mutation status is missing, the available data take the form of censored mixture data. Recently, various methods have been proposed for risk estimation from such data, but none is efficient for estimating a nonparametric distribution. We propose a fully efficient sieve maximum likelihood estimation method, in which we estimate the logarithm of the hazard ratio between genetic mutation groups using B-splines, while applying nonparametric maximum likelihood estimation for the reference baseline hazard function. Our estimator can be calculated via an expectation-maximization algorithm which is much faster than existing methods. We show that our estimator is consistent and semiparametrically efficient and establish its asymptotic distribution. Simulation studies demonstrate superior performance of the proposed method, which is applied to the estimation of the distribution of the age-at-onset of Parkinson's disease for carriers of mutations in the leucine-rich repeat kinase 2 gene.
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Affiliation(s)
- Yuanjia Wang
- Department of Biostatistics, Mailman School of Public Health, 722 W168th Street, New York 10032, U.S.A.
| | - Baosheng Liang
- School of Mathematical Sciences, Beijing Normal University, Beijing 100875, China.
| | - Xingwei Tong
- School of Mathematical Sciences, Beijing Normal University, Beijing 100875, China.
| | - Karen Marder
- Department of Neurology and Psychiatry, College of Physicians and Surgeons, Columbia University, New York 10032, U.S.A.
| | - Susan Bressman
- The Alan and Barbara Mirken Department of Neurology, Beth Israel Medical Center, New York, 10003, U.S.A.
| | - Avi Orr-Urtreger
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Nir Giladi
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Donglin Zeng
- Department of Biostatistics, CB # 7420, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7420, U.S.A.
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Marder K, Wang Y, Alcalay RN, Mejia-Santana H, Tang MX, Lee A, Raymond D, Mirelman A, Saunders-Pullman R, Clark L, Ozelius L, Orr-Urtreger A, Giladi N, Bressman S. Age-specific penetrance of LRRK2 G2019S in the Michael J. Fox Ashkenazi Jewish LRRK2 Consortium. Neurology 2015; 85:89-95. [PMID: 26062626 DOI: 10.1212/wnl.0000000000001708] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Accepted: 03/12/2015] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Estimates of the penetrance of LRRK2 G2019S vary widely (24%-100%), reflective of differences in ascertainment, age, sex, ethnic group, and genetic and environmental modifiers. METHODS The kin-cohort method was used to predict penetrance in 2,270 relatives of 474 Ashkenazi Jewish (AJ) Parkinson disease (PD) probands in the Michael J. Fox LRRK2 AJ Consortium in New York and Tel Aviv, Israel. Patients with PD were genotyped for the LRRK2 G2019S mutation and at least 7 founder GBA mutations. GBA mutation carriers were excluded. A validated family history interview, including age at onset of PD and current age or age at death for each first-degree relative, was administered. Neurologic examination and LRRK2 genotype of relatives were included when available. RESULTS Risk of PD in relatives predicted to carry an LRRK2 G2019S mutation was 0.26 (95% confidence interval [CI] 0.18-0.36) to age 80 years, and was almost 3-fold higher than in relatives predicted to be noncarriers (hazard ratio [HR] 2.89, 95% CI 1.73-4.55, p < 0.001). The risk among predicted G2019S carrier male relatives (0.22, 95% CI 0.10-0.37) was similar to predicted carrier female relatives (0.29, 95% CI 0.18-0.40; HR male to female: 0.74, 95% CI 0.27-1.63, p = 0.44). In contrast, predicted noncarrier male relatives had a higher risk (0.15, 95% CI 0.11-0.20) than predicted noncarrier female relatives (0.07, 95% CI 0.04-0.10; HR male to female: 2.40, 95% CI 1.50-4.15, p < 0.001). CONCLUSION Penetrance of LRRK2 G2019S in AJ is only 26% and lower than reported in other ethnic groups. Further study of the genetic and environmental risk factors that influence G2019S penetrance is warranted.
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Affiliation(s)
- Karen Marder
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel.
| | - Yuanjia Wang
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel
| | - Roy N Alcalay
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel
| | - Helen Mejia-Santana
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel
| | - Ming-Xin Tang
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel
| | - Annie Lee
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel
| | - Deborah Raymond
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel
| | - Anat Mirelman
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel
| | - Rachel Saunders-Pullman
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel
| | - Lorraine Clark
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel
| | - Laurie Ozelius
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel
| | - Avi Orr-Urtreger
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel
| | - Nir Giladi
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel
| | - Susan Bressman
- From the Departments of Neurology (K.M., R.N.A., H.M.-S., M.-X.T.) and Pathology and Cell Biology (L.C.), and Center for Human Genetics (L.C.), College of Physicians and Surgeons, Columbia University; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (K.M., R.N.A., M.-X.T., L.C.) and Department of Biostatistics, Mailman School of Public Health (Y.W., A.L.), Columbia University, New York; The Alan and Barbara Mirken Department of Neurology (D.R., R.S.-P., S.B.), Beth Israel Medical Center, New York, NY; Movement Disorders Unit, Department of Neurology, Tel Aviv Medical Center (A.M., N.G.), Sackler School of Medicine (A.O.U.), and Sagol School for Neurosciences (A.M., N.G.), Tel Aviv University; School of Health Related Professions (A.M.), Ben Gurion University, Beer Sheba, Israel; Departments of Genetics and Genomic Sciences and Neurology (L.O.), Mount Sinai School of Medicine, New York, NY; and Genetics Institute (A.O.U.), Tel Aviv Sourasky Medical Center, Israel
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Abstract
Parkinson’s disease (PD) is a progressively debilitating neurodegenerative syndrome. Although best described as a movement disorder, the condition has prominent autonomic, cognitive, psychiatric, sensory and sleep components. Striatal dopaminergic innervation and nigral neurons are progressively lost, with associated Lewy pathology readily apparent on autopsy. Nevertheless, knowledge of the molecular events leading to this pathophysiology is limited. Current therapies offer symptomatic benefit but they fail to slow progression and patients continue to deteriorate. Recent discoveries in sporadic, Mendelian and more complex forms of parkinsonism provide novel insight into disease etiology; 28 genes, including those encoding alpha-synuclein (SNCA), leucine-rich repeat kinase 2 (LRRK2) and microtubule-associated protein tau (MAPT), have been linked and/or associated with PD. A consensus regarding the affected biological pathways and molecular processes has also started to emerge. In early-onset and more a typical PD, deficits in mitophagy pathways and lysosomal function appear to be prominent. By contrast, in more typical late-onset PD, chronic, albeit subtle, dysfunction in synaptic transmission, early endosomal trafficking and receptor recycling, as well as chaperone-mediated autophagy, provide a unifying synthesis of the molecular pathways involved. Disease-modification (neuroprotection) is no longer such an elusive goal given the unparalleled opportunity for diagnosis, translational neuroscience and therapeutic development provided by genetic discovery.
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Affiliation(s)
- Michelle K Lin
- Djavad Mowafaghian Centre for Brain Health, Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Matthew J Farrer
- Djavad Mowafaghian Centre for Brain Health, Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
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