The invention provides combinations of an ancillary compound and a compound which is a salt of 1-cyclopropyl-3-[3-(5-morpholin-4-ylmethyl-1H-benzoimidazol-2-yl)-1H-pyrazol-4-yl]-urea selected from the lactate and citrate salts and mixtures thereof. Also provided are crystalline forms of the salts, methods for making the salts and their uses in treating cancers. The invention further provides combinations of an ancillary compound and a compound of the formula (I) as defined in PCT/GB2004/002824 (WO 2005/002552) or a compound of the formula (I′) or a salt, solvate, tautomer or N-oxide thereof, wherein R1, E, A and M are as defined in the claims.