Cross-disorder genome-wide analyses suggest a complex genetic relationship between Tourette's syndrome and OCD.
Yu D, Mathews CA, Scharf JM et al.
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Objective: Obsessive-compulsive disorder (OCD) and Tourette's syndrome are highly heritable neurodevelopmental disorders that are thought to share genetic risk factors. However, the identification of definitive susceptibility genes for these etiologically complex disorders remains elusive. The authors report a combined genome-wide association study (GWAS) of Tourette's syndrome and OCD.
1,310 Ashkenazi Jewish, South African Afrikaner ancestry, and other European ancestry OCD cases, 834 Ashkenazi Jewish, French Canadian and other European ancestry Tourette's Syndrome cases, 579 Ashkenazi Jewish, South African Afrikaner ancestry, French Canadian and other European ancestry OCD and Tourette's syndrome cases, 4,975 European ancestry controls, 338 Ashkenazi Jewish controls, 196 French Canadian controls, 158 South African Afrikaner ancestry controls, 290 European ancestry OCD parent-child trios
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