The present study is the first to verify the associations of SNPs rs762178, rs1059004, and rs9653711 of the OLIG2 gene with OCD in a Chinese Han population.
The following 3 single nucleotide polymorphism markers on OLIG2 were associated with the OCD without TD phenotype: rs762178 (minor allele frequency, 35%; P<.001), rs1059004 (minor allele frequency, 44%; P = .005), and rs9653711 (minor allele frequency, 44%; P = .004).