Chairs & Executive Committee Members

Constantine Lyketsos

Elizabeth Plank Althouse of Professor Johns Hopkins University and Chair Department of Psychiatry and Behavioral Sciences at Johns Hopkins Bayview

Constantine G. Lyketsos, MD, MHS is the Elizabeth Plank Althouse Professor in Alzheimer’s Disease Research at Johns Hopkins. An active clinician, teacher, and researcher he founded the Johns Hopkins Memory and Alzheimer’s Center which he directs. Dr. Lyketsos leads the recently constituted Johns Hopkins Precision Medicine Center of Excellence on Alzheimer’s Disease, and is Associate Director of NIA-funded Alzheimer’s Disease Research Center. A world authority in treatment development for Alzheimer’s, he has received multiple major awards, and authored over 400 peer-reviewed articles, chapters, commentaries, as well as five books. His work has been cited over 47,000 times with an h-index of 117 (Google Scholar). Castle-Connolly has named him as one of America’s Top Doctorsevery year since 2001

Panagiotis Vlamos

Professor and Head of the Department of Informatics, Ionian University

Panagiotis Vlamos is a Full Professor, Head of the Department of Informatics and Director of the Bioinformatics and Human Electrophysiology Laboratory (BiHELab) at the Ionian University. He has authored more than 200 papers in peer-reviewed journals and conference proceedings as well as 16 educational books. The topics of his papers are Mathematical Modelling, Applied and Discrete Mathematics as well as Bioinformatics. His main research interestis to help bridge the translational gap from data to models and from models to drug discovery and personalized therapy by developing quantitative deterministic approaches to biological and clinical problems by utilizing high-performance computing. He is the founder of the series of the World Congresses GeNeDis (“Genetics, Geriatrics and Neurodegenerative Diseases Research”), organized every two years starting from 2014. He also founded the Master’s Program “Bioinformatics & Neuroinformatics” and is the editor of the Handbook of Computational Neurodegeneration that will be published by Springer International Publishing.

Vasiliki Machairaki

Assistant Professor of Neurology, Johns Hopkins, USA

Vasiliki Machairaki received her Doctorate in Molecular Biology from the Institute of Molecular Biology and Biotechnology, University of Crete, in 2003. She continued her research as a postdoctoral research fellow at Johns Hopkins. Currently, she holds a position as an Assistant Professor in the Department of Neurology. Dr. Machairaki uses a wide range of molecular biology and stem cell biology techniques to investigate neurodegenerative diseases. Dr. Machairaki’s research focus for more than ten years has been the reprogramming of differentiated cell types into pluripotent stem cells (iPSCs) and the application of this technology to studies of the nervous system and the diseases that affect it. She has been working on the generation of iPS cell lines from Alzheimer’s disease (AD) patients using recent developments in reprogramming strategies. Based on these studies, she has recently extended her research interests in the rapidly emerging field of exosomes and micro-vesicles (called extracellular vesicles or EVs). Combining these studies with the  recent success of her lab on generating novel 3D in vitro models, such as cerebral organoids, Dr. Machairaki and her team can now develop new platforms to study disease mechanisms and test new pharmacological cures. Dr. Machairaki  is also a member of the newly established Johns Hopkins Precision Medicine Centre of Excellence in Alzheimer’s Disease (PMCoE-AD).

Ioannis Tarnanas

Ph.D., Senior Member Swiss National Dementia Task Force; Chief Scientific Officer at Altoida Inc., TMC Texas Medical Center Houston, TX, USA​


Ioannis Tarnanas received his PhD in Neuroscience from Aristotle University of Thessaloniki, Greece. Tarnanas pioneered virtual and augmented reality environments for everyday function monitoring since 2000. In 2005 hebecame involved in the first digital biomarker project in the world from Novartis AG, the smart exelon patch, approved by the FDA in 2013. Since then he has been a Novartis fellow focusing on using new technologies to understand the aging process and to establish prevention methods that decrease the risk of developing dementia or delay the onset of the disease. Currently Tarnanas is a Senior Fellow with the Global Brain Health Institute (GBHI), based in Trinity College Dublin. Dr Tarnanas’s work on novel technologies for assessing and treating age-related cognitive function is of central strategic interest to GBHI and together they have the international outreach to scale up scientific, medical and technological discoveries of proven value through a truly global alumni network. Tarnanas recently created an accurate predictive tool based on cognitive and non-cognitive biomarkers of early onset dementia. The program, named Altoida’s Neuro Motor Index (NMI), aims to spot the first neurological effects of Alzheimer’s disease with 94% accuracy up to decades before symptoms appear. Currently part of the expert evaluators for the European Institute for Innovation and Technology, Health sector (EIT Health) for Brain & Mental Health and Digital Biomarkers, Ioannis will continue to pursue his development of computational biomarkers of Alzheimer’s disease.

Nektarios Tavernarakis

Chairman of the Board of Directors at the Foundation for Research and Technology-Hellas (FORTH), Research Director at the Institute of Molecular Biology and Biotechnology (IMBB), and Professor of Molecular Systems Biology at the Medical School of the University of Crete


Nektarios Tavernarakis is the Chairman of the Board of Directors at the Foundation for Research and Technology-Hellas (FORTH), Research Director at the Institute of Molecular Biology and Biotechnology (IMBB), and Professor of Molecular Systems Biology at the Medical School of the University of Crete, in Heraklion, Greece. He is the Director of the Graduate Program on Bioinformatics at the Medical School of the University of Crete, and is also heading the Neurogenetics and Ageing laboratory of IMBB. He is an elected corresponding member of the Academy of Athens, and an elected member of several research organizations. He has also served as the Director of the Institute of Molecular Biology and Biotechnology. His research focuses on the molecular mechanisms of necrotic cell death and neurodegeneration, the interplay between cellular metabolism and ageing, the mechanisms of sensory transduction and integration by the nervous system, and the development of novel genetic tools for biomedical research. For his scientific accomplishments, he has received several notable scientific prizes, including two ERCAdvanced Investigator Grants, and an innovation-supporting ERC Proof of Concept Grant, the EMBO Young Investigatoraward, the Alexander von Humboldt Foundation, Friedrich Wilhelm Besselresearch award and many more. For more information:

Dimitrios Kapogiannis

Clinical Investigator and Chief of the Human Neuroscience Unit, Laboratory of Clinical Investigations at the National Institute on Aging, NIH, Associate Professor, Department of Neurology, Johns Hopkins School of Medicine.

Dimitrios Kapogiannis is a Clinical Investigator and Chief of the Human Neuroscience Unit at the Laboratory of Clinical Investigations at the National Institute on Aging, NIH, as well as an adjunct Associate Professor at the Department of Neurology of the Johns Hopkins School of Medicine. He earned his Medical Degree from the National and Kapodistrian University of Athens and completed his Neurology residency training at the Harvard University/Massachusetts General Hospital /Brigham and Women’s Hospital combined program, followed by a clinical fellowship at the National Institute of Neurological Disorders and Stroke. He is ABPN-certified in Neurology and UCNS-certified in Behavioral Neurology. He leads a laboratory at the National Institute on Aging conducting translational and clinical studies in cognitive aging and Alzheimer’s disease with a primary focus on discovering novel biomarkers for diagnosis and preclinical prediction of Alzheimer’s and other neurodegenerative diseases. He has been a pioneer in deriving Extracellular Vesicles enriched for neuronal and astrocytic origin from peripheral blood and using them as a source of biomarkers. He is as a member of the editorial boards of Ageing Research Reviews and Cells. He has achieved international recognition for his research in Extracellular Vesicles, with > 3800 citations, an h-index of 35 and an i10-index of 56, per Google Scholar.

Themis Exarchos

Assistant Professor of Data Modeling and Decision Support Systems in the Dept. of Informatics, Member of BiHELab and Visiting professor in Faculty of Mechanical Engineering, University of Kragujevac, Serbia


Dr. Themis Exarchos holds an Engineering Diploma, from the Dept. of Computer Engineering and Informatics of University of Patras (2003) and a PhD in Medical Informatics from the Medical School of the University of Ioannina (2009). He has more than 200 publications in journals, conference proceeding and book chapters. He has worked in many research and development projects, funded by EU and other bodies. He is an Assistant Professor of Data Modeling and Decision Support Systems in the Dept. of Informatics, Ionian University, Corfu, Greece and a member of the Bioinformatics and Human Electrophysiology Laboratory at the same department. He is also a visiting professor in Faculty of Mechanical Engineering, University of Kragujevac, Serbia.


Antonios M. Politis

MD, Professor of Psychiatry, 1st Department of Psychiatry, Ignition Hospital of National and Kapodistrian University in Athens, Chief of the Division of Geriatric Psychiatry.

Antonios M. Politis, MD is Professor of Psychiatry at 1st Department of Psychiatry, Eginition Hospital of National and Kapodistrian  University in Athens and is currently the Chief of the Division of Geriatric Psychiatry. In addition is Part-time faculty member, Division of Geriatric Psychiatry and Neuropsychiatry at the Johns Hopkins University School of Medicine.  Dr Politis is a member of several professional and scientific organizations. His action to promote elderly mental health is also reflected in his participation in committees of the Ministry of Health and Welfare on the Development of the “National Action Plan for Alzheimer’s Disease, Member of the Working Group on the Clinical Guidelines for Dementia. He is reviewer in several journals focused on old age psychiatry and he is associate editor of Journal of Alzheimer Disease. He has authored or co-authored in original publications in highly esteemed journals on topics ranging from dementia and Alzheimer’s disease to geriatric depression and genetics as well as chapters on geriatric psychiatry in books.  His articles have appeared in such periodicals as the International Psychogeriatrics, International Journal of Geriatric Psychiatry, International Journal of Alzheimer Disease, Schizophrenia Research, Journal of Alzheimer Disease and Journal of ECT, among others.