The present invention is related to a method of classifying a sample of a patient who suffers from or being at risk of developing cancer, said method comprising the steps of determining in said sample from said patient, on a non protein basis, the expression level of at least one gene encoding for a hormone receptor selected from the group comprising estrogen receptor, progesterone receptor and/or androgen receptor in said sample comparing the one or more expression level(s) determined with one or more expression level(s) of one or more reference genes, and classifying the sample of said patient from the outcome of the comparison into one of at least two classifications.
