An oral pharmaceutical composition comprising a capsule dosage form containing a liquid fill composition including an anilinopyrimidine derivative of Formula (I) and a pharmaceutically acceptable excipient selected from the group consisting of polyethylene glycol, a glyceryl ester of capric acid or a mixture thereof. The liquid fill composition is formulated in a hard gelatin capsules and can be used for the preparation of a medicament for the treatment of cancer in particular AML.