There was no statistically significant difference in tnfaip8 gene expression between NP and AF (Tnfaip8 to Gapdh gene expression ratio: 0.0346 and 0.0540 in the NP and AF, respectively; n = 6 mice, P = .2049; Figure 1A). The gene discussed is TNFAIP8; the disease is atrial fibrillation.