Dopamine transporter single-photon emission computed tomography (DaTscan SPECT) imaging also helps to detect loss of the normal comma/crescent-shaped tracer uptake in the striatum, and is considered beneficial in early diagnosis of PD, especially with the differential diagnosis of PD from a number of non-degenerative parkinsonian disorders with similar clinical features [9,10]. Here, SLC6A3 is linked to Parkinson disease.