A pharmaceutical combination comprising: (a) a phosphatidylinositol-3-kinase inhibitor selected from 5-(2,6-di-morpholin-4-yl-pyrimidin-4-yl)-4-trifluoromethyl-pyridin-2-ylamine, (S)-Pyrrolidine-1,2-dicarboxylic acid 2-amide 1-({4-methyl-5-[2-(2,2,2-trifluoro-1,1-dimethyl-ethyl)-pyridin-4-yl]-thiazol-2-yl}-amide) or any pharmaceutically acceptable salt thereof and (b) a gonadorelin agonist and, optionally, (c) an antiestrogen agent, particularly for use in the treatment or prevention of a cancer; uses of such a combination in the preparation of a medicament for the treatment or prevention of a cancer; pharmaceutical compositions of the combination of said therapeutic agents and methods of treating a cancer in a subject comprising administering to said subject a therapeutically effective amount of such a combination.