SNCA and Lewy body dementia: “LBD” is an umbrella term, that encompasses both dementia with Lewy bodies (DLB) and Parkinson’s disease dementia (PDD), that are often considered different aspects of the same disease spectrum [4,5], since they share the underlying neuropathology (alpha-synuclein accumulation and Lewy body aggregation), and present with similarities in their clinical manifestation.