Piotr Janik, MD, PhD, neurologist, Assistant Professor in Department of Neurology, Medical University of Warsaw, President of Polish Movement Disorders Society (2024-2027). Doctorial thesis concerned mitochondrial dysfunction in pathogenesis of amyotrophic lateral sclerosis. The recent research focused on symptomatology and pathogenesis of Gilles de la Tourette syndrome. Genetic researches which aim to establish causative mutations and genetic risk factors for Gilles de la Tourette syndrome are carried out with cooperation with Laboratory of Neurogenetics, Department of Neurodegenerative Disorders, Mossakowski Medical Research Centre, Polish Academy of Sciences. The other areas of interest include pathogenesis and treatment of Parkinson’s disease and other movement disorders, deep brain stimulation in therapy of movement disorders, clinical phenomenology and genetics of Cerebellar Ataxia with Neuropathy and Vestibular Areflexia Syndrome (CANVAS).