KD-3010 is a peroxisome proliferator-activated receptor delta agonist potentially for the treatment of diabetes and obesity. KD-3010 dramatically ameliorates liver injury induced by carbon tetrachloride (CCl(4)) injections. Deposition of extracellular matrix proteins was lower in the KD3010-treated group than in the vehicle- or GW501516-treated group. Interestingly, profibrogenic connective tissue growth factor was induced significantly by GW501516, but not by KD-3010, following CCl(4) treatment.