Moreover, our current finding that the percentage of BCL2A1-positive cells in the EPM decreases progressively with increasing GA at delivery (Figure 4) is consistent with previous research demonstrating similar results as follows: (1) as the stage of acute HCA in the EPM progresses, GA at delivery decreases in the context of spontaneous PTB [25,26]; and (2) the inflammatory milieu of AF decreases in the same context of acute HCAs with GA at delivery [27]. Here, BCL2A1 is linked to atrial fibrillation.