Additionally, FABP3 are thought to play a role in the intracellular transport of long-chain fatty acids and their acyl-CoA esters, shows differential expression in macrophages, plays a significant role in ICI-induced pneumonitis (48) and is involved in lipid droplet biogenesis and immune modulation within the tumor microenvironment (49). This evidence concerns the gene FABP3 and pneumonitis.