Polymorphs of a hydrochloride salt of(S)-2-(1-(9H-purin-6-ylamino)propyl)-5-fluoro-3-phenylquinazolin-4(3H)-one, compositions thereof, methods for their preparation, and methods for their use are disclosed. Solvent forms of a hydrochloride salt of(S)-2-(1-(9H-purin-6-ylamino)propyl)-5-fluoro-3-phenylquinazolin-4(3H)-one, compositions thereof, methods for their preparation, and methods for their use are also disclosed.本發明公開了(S)-2-(1-(9H-嘌呤-6-基氨基)丙基)-5-氟-3-苯基喹唑啉-4(3H)-酮的鹽酸鹽的多晶型、其組合物、其製備方法、及其使用方法。本發明亦公開了(S)-2-(1-(9H-嘌呤-6-基氨基)丙基)-5-氟-3-苯基喹唑啉-4(3H)-酮的鹽酸鹽的溶劑形式、其組合物、其製備方法、及其使用方法。