Candidate region for Gilles de la Tourette syndrome at 7q31

Gilles de la Tourette Syndrome (GTS) is a complex neuropsychiatric disorder characterized by motor and vocal tics. The cause of this syndrome is unknown, although based on family studies there is evidence of a strong genetic component. We report on a 13‐year‐old boy with GTS, minor physical anomalies, and a de novo partial duplication of chromosome 7q [dup(7)(q22.1–q31.1)]. The distal breakpoint in our patient is similar to the breakpoint of an apparently balanced familial translocation t(7;18) segregating with GTS. Together, these cases provide evidence that a gene located in the breakpoint region at 7q31 can be involved in the formation of GTS. © 2001 Wiley‐Liss, Inc.