NCT02960022 · Astellas Pharma Global Development, Inc.
A Study for Subjects With Prostate Cancer Who Previously Participated in an Enzalutamide Clinical Study
What this study is about
The purpose of this study is to collect long term safety data in subjects who are continuing to derive clinical benefit from treatment with Enzalutamide from the subjects participation in an enzalutamide clinical study sponsored by Astellas or Medivation (i.e., parent study) which has completed, at a minimum, the primary analysis or the study specified evaluation period.
View original scientific description
The purpose of this study is to collect long term safety data in subjects who are continuing to derive clinical benefit from treatment with Enzalutamide from the subjects participation in an enzalutamide clinical study sponsored by Astellas or Medivation (i.e., parent study) which has completed, at a minimum, the primary analysis or the study specified evaluation period.
Interventions
DRUG
enzalutamide
Subjects will receive enzalutamide orally once daily at the same time each day.
DRUG
abiraterone acetate
Subjects enrolling from study 9785-CL-0011 or MDV3100-10 (PLATO) study may receive abiraterone acetate once daily and prednisone twice daily, in addition to enzalutamide
DRUG
prednisone
Subjects enrolling from study 9785-CL-0011 or MDV3100-10 (PLATO) study may receive abiraterone acetate once daily and prednisone twice daily, in addition to enzalutamide
DRUG
Leuprolide acetate
Subjects enrolling from study MDV3100-13 (EMBARK) study may receive leuprolide acetate once every 12 weeks in addition to enzalutamide once daily
Primary outcome measures
Number of participants with adverse events
Time frame: Until End of Study (Up to 96 Months)
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Subject must currently be receiving enzalutamide for prostate cancer in a study sponsored by Astellas or Medivation and, based on the investigator's assessment, benefit from continued treatment. Subjects participating in investigator-initiated trials are not eligible.
- Subject is able to continue on the treatment regimen that the subject was receiving in the prior study. If in the investigator's assessment, a change is needed to the subject's regimen (e.g., dose change in Androgen deprivation therapy (ADT) or dropping of a combination therapy) approval from a medical monitor is required prior to enrollment.
- Subject is able to swallow enzalutamide capsules and comply with study requirements.
- Subject and female partner who is of childbearing potential must continue to use 2 forms of birth control, of which 1 must be highly effective and 1 must be a barrier method throughout the study and for 3 months after final enzalutamide administration.
- Subject agrees to
Where
- Anchorage, Alaska
- Tucson, Arizona
- Los Angeles, California
- Orange, California
- San Bernardino, California
- San Diego, California
- Stanford, California
- Aurora, Colorado
- Denver, Colorado
- Washington D.C., District of Columbia
- Daytona Beach, Florida
- Jacksonville, Florida
And 32 more locations — see the full list below.
Collaborators
Pfizer
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Apr 13, 2026 · Source of record for eligibility and locations