A Phase III Randomized, Double-blind, Placebo-controlled Trial of Radium-223 Dichloride in Combination With Abiraterone Acetate and Prednisone/Prednisolone in the Treatment of Asymptomatic or Mildly Symptomatic Chemotherapy-naïve Subjects With Bone Predominant Metastatic Castration-resistant Prostate Cancer(CRPC)

15396

To determine if the addition of radium-223 dichloride to standard treatment is able to prolong life and to delay events specific for prostate cancer which has spread to the bone, such as painful fractures or bone pain which needs to be treated with an X-ray machine.

2014-03-30

2018-02-15

2024-02-08

Completed

Early phase I

806

Inclusion Criteria: * Histologically confirmed adenocarcinoma of the prostate * Male subjects of age ≥ 18 years * Prostate cancer progression documented by prostate specific antigen (PSA) according to the Prostate Cancer Working Group 2 (PCWG2) criteria or radiological progression according to Response Evaluation Criteria in Solid Tumors (RECIST), version 1.1 * Two or more bone metastases on bone scan within 4 weeks prior to randomization with no lung, liver, other visceral and/or brain metastasis * Asymptomatic or mildly symptomatic prostate cancer * Subjects who received combined androgen blockade with an anti-androgen must have shown PSA progression after discontinuing the anti-androgen prior to enrollment * Maintenance of medical castration or surgical castration with testosterone less than 50 ng/dL (1.7nmol/L) * Eastern Cooperative Oncology Group performance status (ECOG PS) score 0 or 1 Exclusion Criteria: * Prior cytotoxic chemotherapy for the treatment of CRPC, including taxanes, mitoxantrone and estramustine * Any chronic medical condition requiring a higher dose of corticosteroid than 5 mg prednisone/prednisolone twice daily * Pathological finding consistent with small cell carcinoma of the prostate * History of visceral metastasis, or presence of visceral metastasis detected by screening imaging examinations * History of or known brain metastasis * Malignant lymphadenopathy exceeding 3 cm in short-axis diameter * Blood transfusion or erythropoietin stimulating agents prior 4 weeks of screening and during the whole screening period before randomization * Imminent spinal cord compression based on clinical findings and/or magnetic resonance imaging (MRI). Subjects with history of spinal cord compression should have completely recovered * Use of opiate analgesics for cancer-related pain, including codeine and dextropropoxyphene, currently or anytime during the 4- week period prior to randomization.

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2024-02-26