FOXM1 and Pulmonary hemorrhage: The cell‐specific loss of FOXM1 in different tissues has demonstrated that FOXM1 is essential for mouse embryonic development.[15, 16, 29, 30] SMC‐specific FOXM1 loss during the embryonic period results in severe pulmonary hemorrhage and structural defects in arterial walls.[17] Global and cardiac‐specific Foxm1 knockout both cause reduced CM proliferation and embryonic lethality during late gestation.[15, 16, 30] These studies have shown that FOXM1 has distinct roles in different tissues during embryonic development.