PDE3A and hypertrophic cardiomyopathy 1: While studying the effect of pharmacological inhibition of PDE3A with cilostazol on CAA-associated CMH development, the survival of mice was as follows: 8/8 in the WT group, 6/7 in the WT-CIL group, 5/6 in the Tg group, and 8/8 in the Tg-CIL group (Fig. 2b).