ODM-204, a novel dual inhibitor of CYP17A1 and androgen receptor for the treatment of castration-resistant prostate cancer.
2016
230 Background: Castration-resistant prostate cancer (CRPC) is characterized by high androgen receptor (AR) expression and persistent activation of AR signaling axis by residual tissue androgens. Inhibiting AR and androgen biosynthesis together may be more effective than inhibiting either alone to treat CRPC. ODM-204 is a potent, orally administered investigational non-steroidal dual inhibitor of CYP17A1 and AR. In vivo, ODM-204 shows favourable pharmacokinetic/ pharmacodynamics (PK/PD) properties in intact mature male monkeys and strong antitumor activity in VCaP xenograft. Methods: The inhibition of CYP17A1 by ODM-204 was studied by using human testicular microsomes and adrenal cortex cell line. Potency to human AR was demonstrated in cells stably transfected with the full-length AR and androgen-responsive reporter gene constructs. PK/PD relationships were evaluated in intact male mature monkeys after single and multiple doses of ODM-204 (10-30 mg/kg/day) by measuring plasma PK after several time points...
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