Human:- CHD vs. ctrl => impaired expression of 20 miRNA- CHD vs. ctrl => ↑ miR-29b-3pIn Vivo/Vitro- ↑ miR-29b-3p induce cardiac malformation and lethality in zebra fish, - ↑ miR-29b-3p inhibited cardiomyocyte proliferation in vitro and in vivo- ↓ miR-29b-3p ↑ cardiomyocyte proliferation in vitro and in vivo. - miR-29b targets NOTCH2. Here, NOTCH2 is linked to coronary artery disorder.