We found that NF-κB-related mRNA levels did not differ in bipolar disorder subjects as a function of suicide as manner of death (all F ≤ 1.6, all p > 0.21; Supplemental Table S1) with the exception of cRel mRNA levels which were 8% higher in bipolar disorder subjects who died by suicide relative to bipolar disorder subjects with natural or accidental manners of death (F1,32 = 5.3, p = 0.028). This evidence concerns the gene REL and bipolar disorder.