Abiraterone inhibits the activity of the enzyme CYP17 involved in androgen synthesis. As a consequence, androgens among them, testosterone are unable to trigger the replication of prostate cancer cells. By blocking CYP17, abiraterone significantly lowers androgen levels and delays the formation of a tumour. https://www.tumblr.com/fruvdtujfcv/758508606007148544/decoding-drug-costs-abiraterone-pricing-and