Second, insertion of an SVA-type retrotransposon in a noncoding region of TAF1, that results in abnormal splicing and reduced expression of TAF1 in patient-derived NSCs, is associated with X-linked dystonia parkinsonism (Bragg et al., 2017; Aneichyk et al., 2018). The gene discussed is TAF1; the disease is X-linked dystonia-parkinsonism.