DGKH and bipolar disorder: In 2008, DGKH was reported to associate with bipolar disorder in a genome-wide association study and many polymorphisms located in DGKH were found to be associated in a population (of European origin) as reported by the National Institute of Mental Health or a German replicate sample (Baum et al. 2008), such as rs9532988, rs9532989 and rs1012053.