Leonidas Stefanis graduated from the Medical School of the Univ. Of Athens in 1987. He subsequently moved to New York, where he stayed for 12 years at Columbia Univ. He first trained there in Clinical Neurology, and then underwent research training in the mechanisms of neuronal cell death and Neurodegenerative Diseases in the Department of Pathology. He then assumed the position of Assistant Professor in Neurology and Pathology, with an emphasis on mechanisms of neurodegeneration. He returned to Greece in 2003, as Researcher at BRFAA. He assumed the position of Associate Professor at the Univ. of Athens in 2006. He is Professor of Neurology and Neurobiology at the Univ. of Athens since 2012, Director of the Second Dept of Neurology of the Univ of Athens Medical School since 2011, and Collaborating Scientist at BRFAA since 2006. His research focuses on Parkinson’s Disease and related neurodegenerative diseases. He studies the whole spectrum of the disease, from its clinical manifestations, and the genetic-epidemiological substrate, to the investigation of disease pathogenesis, through disease modeling in cells or experimental animals, and the implementation of novel experimental therapies for the curtailment of neurodegeneration. He has been the coordinator for many national and international competitive research programs on the subject of the pathogenesis of Parkinson’s Disease.