In addition, after analyzing the ratio of IFN-γ-secreting CD8+ T cells to IL-10-secreting CD8+ T cells at each follow-up point, the AF mothers were found to have a significantly higher ratio of these cells than that of the NAF mothers before and after stopping AVT (6–8 weeks postpartum and 15–18 weeks postpartum) (p = 0.007, p = 0.046, p = 0.027). The gene discussed is CD8A; the disease is atrial fibrillation.