SLC18A2 and Lewy body dementia: Additionally, the concentration of dopamine showed a significant positive correlation with VMAT2 expression in the putamen of DLB brains (Fig. 3c, rs = 0.667, p = 0.050), further proving in all likelihood that dopamine accumulates in the cytosol by means of dopamine transporter followed by sequestration into the synaptic storage vesicles by VMAT2.