In addition, CSF and blood NfL protein levels were reportedly the highest in MSA among several Parkinsonian disorders (Parkinson’s disease, Parkinson’s disease dementia, dementia with Lewy bodies, progressive supranuclear palsy, corticobasal syndrome, essential tremor, and idiopathic rapid eye movement sleep behaviour disorder) [85]. The gene discussed is NEFL; the disease is Parkinson disease.