Diffusion tensor imaging and tractography demonstrated an abnormal structural integrity of the white matter not only in patients with TOR1A (Carbon et al. 2004a; Argyelan et al. 2009) and THAP1-related (Argyelan et al. 2009; Carbon et al. 2004a) dystonia but also in symptomatic carriers of variants in the yet unconfirmed COL6A3 gene (Jochim et al. 2018). The gene discussed is THAP1; the disease is Dystonia.