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Efficacy and Safety Study of Enzalutamide in Patients With Nonmetastatic Castration-Resistant Prostate Cancer

PROSPER: A Multinational, Phase 3, Randomized, Double-Blind, Placebo-Controlled, Efficacy and Safety Study of Enzalutamide in Patients With Nonmetastatic castration-Resistant Prostate Cancer

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
CRIS
Registry ID
KCT0001047
Enrollment
1560
Registered
2014-04-11
Start date
2014-03-24
Completion date
Unknown
Last updated
2019-03-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Interventions

Drug : 1. Experimental group Xtandi soft capsule 40mg(enzalutamide) 160mg/day, Once per day Continue until radiographic progression as specified in the protocol. oral 2. Control group Xtandi sof

Sponsors

Novotech Asia Korea
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: 1. Age 18 years or older and willing and able to provide informed consent; 2. Histologically or cytologically confirmed adenocarcinoma of the prostate without neuroendocrine differentiation, signet cell, or small cell features; 3. Ongoing androgen deprivation therapy with a GnRH agonist/antagonist or prior bilateral orchiectomy (medical or surgical castration); 4. Testosterone = 50 ng/dL (= 1.73 nmol/L) at screening; 5. For patients receiving bisphosphonates or denosumab, dose must be stable for at least 4 weeks before randomization; 6. Progressive disease on androgen deprivation therapy at enrollment defined as a minimum of 3 rising PSA values (PSA1 < PSA2 < PSA3) assessed by a local laboratory (local PSA) with an interval of = 1 week between each determination; and so on.

Exclusion criteria

Exclusion criteria: 1. Prior cytotoxic chemotherapy, aminoglutethimide, ketoconazole, abiraterone acetate, or enzalutamide for the treatment of prostate cancer or participation in a clinical trial of an investigational agent that inhibits the androgen receptor or androgen synthesis (unless treatment was placebo); 2. Treatment with hormonal therapy (eg, androgen receptor inhibitors, estrogens, 5-alpha reductase inhibitors) or biologic therapy for prostate cancer (other than approved bone-targeting agents and GnRH agonist/antagonist therapy) within 4 weeks of randomization; 3. Use of an investigational agent within 4 weeks of randomization; 4. Known or suspected brain metastasis or active leptomeningeal disease; 5. History of another invasive cancer within 3 years of randomization, with the exception of fully treated cancers with a remote probability of recurrence in the opinion of both the medical monitor and investigator; and so on.

Design outcomes

Primary

MeasureTime frame
metastasis-free survival

Secondary

MeasureTime frame
Overall survival;Time to pain progression;Time to opiate use for prostate cancer pain;Time to pain progression or opiate use for prostate cancer pain;Time to first use of cytotoxic chemotherapy;Time to first use of new antineoplastic therapy;Time to prostate-specific antigen (PSA) progression;PSA response rates;Time to functional status deterioration as assessed by the Functional Assessment of Cancer Therapy-Prostate (FACT-P) global score;Quality of life as assessed by the European Quality of Life-5 Dimensions-5 Levels (EQ-5D-5L) health questionnaire and Quality of Life Questionnaire-Prostate 25 (QLQ-PR25) module

Countries

Korea, Republic of

Contacts

Public ContactJeong Juhn

Novotech Asia Korea

Outcome results

None listed

Source: CRIS (via WHO ICTRP) · Data processed: Feb 4, 2026