During atherosclerosis, endothelial to mesenchymal transition (EndMT) induced by oxidative stress, TGFβ, and other stressors characteristic of the atherosclerotic milieu, can cause endothelial cells to acquire a more fibrotic phenotype and express mesenchymal markers such as Tgfβ and Fsp‐1.47, 48. Here, TGFB1 is linked to atherosclerosis.