Obviously, although the diversity of synucleinopathies and related symptoms potentially can be attributed to the complexity of the organization of brain and nervous system (different motor and non-motor symptoms are the manifestation of the malfunction of different brain and nervous system regions), this complexity, in general, cannot be used to explain the cause of the multifaceted, α-synuclein-related pathology at the molecular level. This evidence concerns the gene SNCA and synucleinopathy.