The invention provides a method for selecting a patient who may respond to a compound having at least one (substituted phenyl)-propenal moiety, which comprises contacting the compound with a sample derived from the patient and determining whether the compound decreases the amount of a protein selected from AR, c-MYC, Aurora-A, mutated p53, CDK4, or Her2 or whether the compound increases the amount of reactive oxygen species in the sample, wherein decrease of the protein or increase of the reactive oxygen species indicates that the patient may respond to the compound. The invention also provides a kit, a method for identifying a candidate compound which may treat an androgen receptor associated medical condition, and a candidate compound identified by the method as mentioned above.
