We also did not see differences in mRNA levels between subjects diagnosed with bipolar I disorder (n = 21) relative to subjects diagnosed with another bipolar disorder (n = 14; i.e. bipolar II disorder (n = 8) or bipolar disorder not otherwise specified (n = 6)) for any NF-κB-related marker (all F ≤ 2.5, all p ≥ 0.12), with the exception of HIVEP2 (+11% in bipolar I disorder subjects; F(1,32) = 7.1, p = 0.012). Here, HIVEP2 is linked to bipolar II disorder.