Trial reportInternational journal of clinical oncology2020
A randomized, double-blind, comparison of radium-223 and placebo, in combination with abiraterone acetate and prednisolone, in castration-resistant metastatic prostate cancer: subgroup analysis of Japanese patients in the ERA 223 study.
Trial report in International journal of clinical oncology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02043678 (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), which is not on this map. Cited by 6 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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)
Who cites it
6 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.
- Fracture risk and survival outcomes of radium-223 therapy for bone metastases in mCRPC and the modulatory role of bone-protective therapy: a systematic review and meta-analysis.Frontiers in oncology · 2025Pooled it
- Article
- A Systematic Review of Patient Race, Ethnicity, Socioeconomic Status, and Educational Attainment in Prostate Cancer Treatment Randomised Trials-Is the Evidence Base Applicable to the General Patient Population?European urology open science · 2023Article
- Administration of radium-223 and the prognosis in Japanese bone metastatic castration-resistant prostate cancer patients: A large database study.International journal of urology : official journal of the Japanese Urological Association · 2022Article
- Updates in Management of Bone Metastatic Disease in Primary Solid Tumors with Systemic Therapies.Current osteoporosis reports · 2021Review
- Article
Corrections and comments
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Authors and funding
13 authors at 11 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundERA 223 compared concurrent abiraterone acetate/prednisolone (AAP) plus radium-223 with AAP plus placebo in men with chemotherapy-naïve asymptomatic or mildly symptomatic metastatic castration-resistant prostate cancer (mCRPC) and bone metastases. We report data from a subgroup of Japanese patients in ERA 223.
methodsPatients were randomized to radium-223 (55 kBq/kg) or placebo once every 4 weeks (max. 6 cycles), and also received oral abiraterone acetate 1000 mg once daily plus prednisone/prednisolone 5 mg twice daily during and after radium-223/placebo treatment, until a symptomatic skeletal event (SSE). The primary endpoint was SSE-free survival (SSE-FS); overall survival (OS) was a secondary endpoint.
resultsOf 806 patients randomized in ERA 223, 114 patients (57 per arm) were enrolled in Japan. SSE-FS was not improved significantly in the radium-223 arm [25.5 months, 95% CI 20.6-not estimated (NE)] compared with the placebo arm (28.7 months, 95% CI 19.7-NE) (HR = 0.907, 95% CI 0.501-1.642). OS and other secondary endpoints were not improved significantly in the radium-223 arm. The incidence of fracture was 23% and 11% in the radium-223 and placebo arms, respectively. The incidence of death was 32% and 36%, respectively.
conclusionsIn the Japanese ERA 223 subgroup, concurrent treatment with AAP and radium-223 did not significantly improve SSE-FS and increased the incidence of fracture, similar to outcomes achieved in the overall population, while an increased incidence of death was not evident. The combination of radium-223 with AAP is not recommended in Japanese patients with asymptomatic or mildly symptomatic mCRPC and bone metastases. CLINICAL
trial registrationClinical trial registration no: NCT02043678.
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