Hi, I Am An Analyst Working In A Pharma Servicing

Hi, I am an analyst working in a Pharma servicing company. My question is for a project on prostate cancer that I am working on. Is it possible to classify patients as "Localized disease", "Biochemical recurrence" and "Metastatic cancer" based the the drugs used? If so, then what are the specific drugs and procedures which are used specifically in each of these patient segments.