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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 Prostate cancer and prostatic diseases
Vol 16
Issue 2
Date 2013 Jun
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
Unknown unknown prostate cancer no benefit Zibotentan Phase III Actionable In a Phase III trial, Zibotentan (ZD4054) did not demonstrate a survival benefit compared to placebo in patients with prostate cancer, and the trial was discontinued at the interim analysis (PMID: 23381694). 23381694