The expression of YAP1 was increased in the elastase‐induced AAA (n = 5) tissue compared with that in the control group (saline, n = 3) (Figure 2A); likewise, the expression of YAP1 in the CaCl2‐induced AAA (n = 5) tissue was significantly increased compare to the control group (saline, n = 4) (Figure 2B). This evidence concerns the gene YAP1 and triple-A syndrome.