Reference Detail

Ref Type

Journal Article

PMID

(23381694)

Authors

Miller K, Moul JW, Gleave M, Fizazi K, Nelson JB, Morris T, Nathan FE, McIntosh S, Pemberton K, Higano CS

Title

Phase III, randomized, placebo-controlled study of once-daily oral zibotentan (ZD4054) in patients with non-metastatic castration-resistant prostate cancer.

Journal	Vol	Issue	Date	Pages	Journal Short Title
Prostate cancer and prostatic diseases	16	2	2013 Jun	187-92	Prostate Cancer Prostatic Dis

URL

Abstract Text

Standard treatment options are limited for the management of non-metastatic castration-resistant prostate cancer (CRPC). This study, part of the ENTHUSE (EndoTHelin A USE) phase III programme, evaluated the efficacy and safety of the oral specific endothelin (ET)A receptor antagonist zibotentan vs placebo in patients with non-metastatic CRPC (non-mCRPC).This was a multicentre, randomized, double-blind, phase III study. Patients (n=1421) with non-mCRPC and biochemical progression (determined by rising serum PSA levels) were randomized to receive zibotentan 10 mg or placebo once daily. Based on the lack of efficacy signal in another ENTHUSE phase III study, an interim analysis was performed to determine whether the study was likely to achieve the co-primary objectives of improved overall survival (OS) and progression-free survival (PFS).Criteria for continuation of this study were not met. A total of 79 deaths and 293 progression events were recorded at final data cutoff. Zibotentan-treated patients did not significantly differ from placebo-treated patients for OS (hazard ratio (HR): 1.13; 95% confidence interval (CI): 0.73-1.76, P=0.589) or PFS (HR: 0.89; 95% CI: 0.71-1.12, P=0.330). The most commonly reported adverse events in zibotentan-treated patients were peripheral oedema (37.7%), headache (26.2%) and nasal congestion (24.9%); each occurred with >15% higher incidence than in the placebo group.This trial was terminated early because of failure at interim analysis of the efficacy data to meet the defined criteria for continuation. Owing to the absence of demonstrable survival benefits in the ENTHUSE clinical studies, zibotentan is no longer under investigation as a potential treatment for prostate cancer.

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Molecular Profile	Treatment Approach

Gene Name	Source	Synonyms	Protein Domains	Gene Description	Gene Role

Therapy Name	Drugs	Efficacy Evidence	Clinical Trials

Drug Name	Trade Name	Synonyms	Drug Classes	Drug Description

Gene	Variant	Impact	Protein Effect	Variant Description	Associated with drug Resistance

Molecular Profile	Indication/Tumor Type	Response Type	Therapy Name	Approval Status	Evidence Type	Efficacy Evidence	References