BRD1 and bipolar disorder: Supporting a role for BRD1 in mental health, BRD1 has repeatedly been associated with schizophrenia and bipolar disorder in genetic studies24–28, including gene-wise significant association in the currently largest schizophrenia GWAS mega-analysis29 and genome-wide significance in the Psychiatric Genomics Consortium (PGC1) schizophrenia sample30.