- CCl4 administration → activation of CCN1/p53/p16INK4a pathway → hepatic stellate cell senescence → secretion of MMPs → fibrotic resolution → recruitment of NK cells to promote their own clearance- p53;INK4A/ARF null mice → ↓ senescence upon CCl4 treatment → ↑ cirrhosis. Here, CDKN2A is linked to Cirrhosis.