The use of 5-(2,4-Dihydroxy-5-isopropyl-phenyl)-4-(4-morpholin-4-ylmethyl-phenyl)-isoxazole-3-carboxylic acid ethylamide or a tautomer thereof or a pharmaceutically acceptable salt or a hydrate or a solvate for the treatment of cancer of the bladder, the colon, the liver, the lung,the breast, the ovaries, the pancreas, the kidney, the stomach, the gastrointestinal tract, the prostate, the head and neck, the brain, and/or the blood
