SLC6A3 and Parkinson disease: Jenkins et al. (2020) analyzed the alterations of the DAT, using single photon emission computed tomography (SPECT), in 43 patients with moderate to severe TBI in the chronic phase (more than 6 months from the lesion) and with cognitive difficulties. They found that patients with TBI present a decrease in DAT in the caudate nucleus, which has been related to hypodopaminergic states and motor alterations other than Parkinson’s disease in the early stages (Table 1).