TNFRSF1A and bipolar disorder: Furthermore, IFITM1 mRNA levels were correlated with mRNA levels for IL-1R, TNFR, NF-κB2, and RelA across all subjects (all r ≥ 0.41, all p ≤ 0.004) and in bipolar disorder subjects alone (all r ≥ 0.60, all p ≤ 0.0001).