The disclosure relates combination comprising AZD5363 ((S)-4-amino-N-(1-(4-chlorophenyl)-3-hydroxypropyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxamide), or a pharmaceutically acceptable salt thereof, and at least one androgen receptor signalling modulator selected from MDV-3100 (4-(3-(4-Cyano-3-(trifluoromethyl)phenyl)-5,5-dimethyl-4-oxo-2-thioxoimidazolidin-1-yl)-2-fluoro-N-methylbenzamide) (also known as enzalutamide). The disclosure also relates to kits comprising these components and the use of these combinations for the treatment of cancer, especially prostate cancer.