The subjects investigated in this study were divided into three groups: (1) seven individuals with IMMP2L deletions (IMMP2L1–7), where four of them were clinically diagnosed with GTS (P1, P2, P5, and P6) and three of them were parents (of P1, P2, and P6) without a GTS diagnosis; (2) three GTS patients without IMMP2L deletions (TS 1–3); and (3) four controls without any GTS symptoms (control 1–4) including mothers of patients P1 and P6 (Table 1). The gene discussed is IMMP2L; the disease is Tourette syndrome.