Prostate AdenocarcinomaPhase 2BAT-RADNCT04704505
Bipolar Androgen Therapy (BAT) and Radium-223 (RAD) in Metastatic Castration-resistant Prostate Cancer (mCRPC)
A Phase 2 study testing radium-223 and Bipolar Androgen Therapy (BAT) in people with Prostate Adenocarcinoma and Metastatic Prostate Adenocarcinoma, run by Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins at 2 sites in 2 countries.
Trial summary
This is a single-arm, multicenter open label, international, phase II study of Bipolar Androgen Therapy (BAT) plus Radium-223 (RAD) in men with metastatic castration-resistant prostate cancer (mCRPC). Read more about this study
- Who is it for?
- Ages 18 years and older, men onlyHealthy volunteers can take part
- Conditions the study is for
- Prostate Adenocarcinoma, Metastatic Prostate Adenocarcinoma, Castration-resistant
- What is being tested?
- radium-223 and Bipolar Androgen Therapy (BAT)
- Type of treatment
- Injection or infusion, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 47 participants
- Where
- 2 sitesin 2 countries
- Study dates
- 28 Apr 2022to Feb 2029
- Phase
- Phase 2
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Men only
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Histologically documented adenocarcinoma of the prostate confirmed by pathology report from prostate biopsy or a radical prostatectomy specimen. If prostatic tumor is of mixed histology, > 50% of the tumor must be adenocarcinoma.
- Bone metastases as manifested by one or more lesions on a Technetium 99m bone scan performed within 2 months of screening
- Castrate-resistant prostate cancer, in the setting of castrate levels of testosterone (≤ 50 ng/dL), defined as current or historical evidence of disease progression concomitant with surgical castration or androgen deprivation therapy (ADT), as demonstrated by two consecutive rises in PSA OR new lesions on bone scan:
- PSA progression will be defined as 2 rising PSA values compared to a reference value, measured at least 7 days apart and the second value is ≥ 2 ng/mL. Appearance of one or more new areas of abnormal uptake on bone scan when compared to imaging studies acquired during castration therapy or against the precastration studies if there was no response. Increased uptake of pre-existing lesions on bone scan does not constitute progression. It must be documented within 8 weeks of screening Documented bone lesions by the appearance of ≥ 2 new lesions by bone scintigraphy or dimensionally measurable soft tissue metastatic lesion assessed by CT or MRI.
- Serum PSA ≥ 2.0 ng/mL
- Patients must be on bone health agents, either zoledronic acid or denosumab, for at least 4 weeks before enrollment. These treatments must then be continued during the study.
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- Screening Eastern Cooperative Oncology Group (ECOG) performance status ≤ 1
- Asymptomatic or minimally symptomatic disease (no opioids)
- Prior treatment with no more than one novel AR targeted drug (abiraterone, enzalutamide, darolutamide or apalutamide) is permitted, but not required. Prior first-generation AR targeted therapies such as bicalutamide or nilutamide are permitted as previous therapy and does not count as novel AR targeted therapy.
- Prior chemotherapy for hormone-sensitive prostate cancer (given ≥ 12 months prior to study entry) is allowed, but not necessary.
- Adequate bone marrow, renal and liver function (Absolute Neutrophil count > 1,000, Platelets >100,000, Hemoglobin ≥ 9g/dL aspartate aminotransferase/ alanine amino transferase (AST)/(ALT) within normal limits (WNL); Total Bilirubin WNL.
- No evidence (within 5 years) of prior malignancies (except successfully treated basal cell or squamous cell carcinoma of the skin).
- All patients must have tissue for genomic analysis. A biopsy of a metastatic site may be done during the screening; however, archive tissue will be allowed. Prostate tissue from prostate biopsy will be allowed.
Who cannot join
- The presence of known visceral metastasis, including lung, liver and brain metastases.
- Spinal cord compression, imminent long bone fracture, or any other condition that, in the opinion of the investigator, is likely to require radiation therapy and/or steroids for pain control during the active phase.
- Previous treatment with chemotherapy for mCRPC, or chemotherapy for any reason within 12 months prior to registration. (Chemotherapy in the adjuvant setting or for hormone-sensitive prostate cancer is permitted, as long as it was completed more than 6 months before registration).
- History of radiation therapy, either via external beam or brachytherapy within 28 days prior to registration.
- Systemic therapy with strontium-89, samarium-153, rhenium-186 or rhenium-188 for the treatment of bony metastases within previous 24 weeks
- Use of opioid analgesics for cancer-related pain such as oxycodone, morphine or methadone. Weak opioid analgesics such as codeine or tramadol are permitted.
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- Use of experimental drug within 4 weeks of treatment.
- Patients with an intact prostate AND urinary obstructive symptoms are excluded (which includes patients with urinary symptoms from benign prostatic hyperplasia (BPH).
- Patients receiving anticoagulation therapy with warfarin are not eligible for study. Patients on other anticoagulants such as rivaroxaban, dabigatran, apixaban are permitted.
- Symptomatic nodal disease, i.e. scrotal, penile or leg edema.
- Poor medical risk due to a serious, uncontrolled medical disorder, non-malignant systemic disease, or active, uncontrolled infection or a disease that may compromise safety. Examples include, but are not limited to, diabetes, heart failure, chronic obstructive pulmonary disease (COPD), ulcerative colitis, or Crohn's disease, Paget's disease, ventricular arrhythmia, recent (within 12 months) myocardial infarction, thromboembolic events or any psychiatric disorder that prohibits obtaining informed consent. Any medical intervention, any other condition, or any other circumstance which, in the opinion of the investigator, could compromise adherence with study requirements or otherwise compromise the study's objectives.
- Evidence of disease in sites or extent that, in the opinion of the investigator, would put the patient at risk from therapy with testosterone (e.g. femoral metastases with concern over fracture risk, severe and extensive spinal metastases with concern over spinal cord compression, etc). Patients with low volume visceral metastasis are permitted at the discretion of the investigator, however bone disease must be predominant.
Trial locations and contacts
2 sites in 2 countries. Contact the study team or a site near you to ask about taking part.
2 sites in 2 countries
United States1 site, 1 recruiting
- Recruiting
Amber Michalik
Baltimore, Maryland, 20707
Amber Michalik, BA, 667-306-8336, amichal2@jhmi.edu
Brazil1 site, 1 recruiting
- Not yet recruiting
Moinhos de Vento Hospital
Porto Alegre, 90560-010
Pedro Isaacsson Velho, M,D, +55 51 980609999, pedro.isaacsson@hmv.org.br
About this study
Official title: Bipolar Androgen Therapy (BAT) and Radium-223 (RAD) in Metastatic Castration-resistant Prostate Cancer (mCRPC) (BAT-RAD Study)
This is a single-arm, multicenter open label, international, phase II study of Bipolar Androgen Therapy (BAT) plus Radium-223 (RAD) in men with metastatic castration-resistant prostate cancer (mCRPC). Men with mCRPC with progressive disease (radiographically and/or biochemically) who have been treated with gonadotropin-releasing hormone (GnRH)-analogue (LHRH agonists/antagonists) continuously or bilateral orchidectomy will be enrolled in this study. Previous antiandrogen therapies are permitted, but no more than one (such as abiraterone, enzalutamide, apalutamide, darolutamide). All patients will receive treatment with Radium-223 at a dose of 55 Kilobecquerel (kBq) per kilogram of body weight IV every 28 days, for 6 cycles, plus Testosterone Cypionate 400mg Intramuscular (IM) every 28 days, until progression or unacceptable toxicity.
- Being tested
- radium-223, Bipolar Androgen Therapy (BAT)
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
radium-223Radiation
Radium-223 is an alpha-particle-emitting bone-targeted therapy. All patients will receive Treatment with Radium-223 at a dose of 55 kBq per kilogram of body weight IV every 28 days, for 6 cycles,
Bipolar Androgen Therapy (BAT)Drug
All Patients will receiveTestosterone Cypionate 400mg IM every 28 days, until progression or unacceptable toxicity.
| Study group | Role | What they receive |
|---|---|---|
| Bipolar Androgen Therapy in addition to RADium-223 (RAD) | Experimental | Participants will receive Bipolar Androgen Therapy (BAT) plus Radium-223 (RAD). Receives: Radiation: radium-223; Drug: Bipolar Androgen Therapy (BAT) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Radiographic progression-free survival (rPFS) of BAT-RAD
To determine the radiographic progression-free survival (rPFS) of BAT-RAD in patients with mCRPC treated with at least one novel androgen receptor (AR) targeted treatment.
Measured: 24 months
Secondary outcomes (10)
PSA decline ≥ 50 percent rate (PSA50) of BAT-RAD
To determine the PSA decline ≥ 50% rate (PSA50) of BAT-RAD in patients with mCRPC in 24 months.
Measured: 24 months
Change in alkaline phosphatase of BAT-RAD
To determine if the dynamics (change) of alkaline phosphatase of BAT-RAD in patients with mCRPC.
Measured: Baseline and then on day one of each cycle (each cycle is 28 days), up to 9 cycles
PSA progression-free survival (PSA-PFS) of BAT-RAD
To determine the PSA progression-free survival (PSA-PFS) of BAT-RAD in patients with mCRPC in 24 months.
Measured: 24 months
Time to disease progression of BAT-RAD
To determine the time to disease progression of BAT-RAD in patients with mCRPC measured in months.
Measured: 24 months
Overall survival of BAT-RAD
To determine the overall survival of BAT-RAD in patients with mCRPC in 24 months.
Measured: 24 months
Symptomatic skeletal event-free survival
To determine the symptomatic skeletal event-free survival in patients with mCRPC in 24 months.
Measured: 24 months
Change in Quality of life as assessed by anxiety/depression EuroQol 5 dimensions 3 levels (EQ-5D-3L)
The EQ-5D-3L is made up of 5 questions each with 3 levels. The lowest level being none and the highest level being extreme. Overall score range of 3-15 with higher scores signifying worse quality of life.
Measured: Baseline, cycle 4 day 1, cycle 7 day 1 and at the end of treatment, up to 28 days post cycle 9 (each cycle is 28 days)
Change in Quality of life as assessed by the Functional Assessment of Cancer Therapy- Prostate (FACT-P)
The (FACT-P) is made up of 39 question the scoring is between 0 and 156 with 0 being the best and 156 as the worst.
Measured: Baseline, cycle 4 day 1, cycle 7 day 1 and at the end of treatment, up to 28 days post cycle 9 (each cycle is 28 days)
Change in Quality of life as assessed by the Brief Pain Inventory-Short Form (BPI-SF)
The Brief Pain Inventory-Short Form (BPI-SF) is 1 question 0 being the best and 10 being the worst.
Measured: Baseline, cycle 4 day 1, cycle 7 day 1 and at the end of treatment, up to 28 days post cycle 9 (each cycle is 28 days)
Safety of BAT-RAD in patients with mCRPC as assessed by number of participants removed for adverse events
To determine the safety of BAT-RAD in patients with mCRPC in patients with mCRPC compared with standard of care treatment for this patient population. This will be measured through Physical assessment, adverse events and labs and will be measured by how many patients are removed for adverse events.
Measured: Up to 10 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Jan 2021
- Study start28 Apr 2022
- Primary completionFeb 2028 (estimated)
- Study completionFeb 2029 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Prostate AdenocarcinomaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 47 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
- Sponsor type
- University, hospital or other
- Collaborators
- Bayer
- Responsible party
- Sponsor
- Investigators
- Pedro Isaacsson Velho, M,D, Principal investigator, Moinhos de Vento HospitalSamuel Denmeade, M,D, Principal investigator, Sidney Kimmel Comprehensive Cancer Center at the Johns Hopkins Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04704505
- Sponsor's protocol ID
- J2116
- Other IDs
- IRB00273010
- Acronym
- BAT-RAD
- Status last verified
- Feb 2026
- First submitted
- 7 Jan 2021
- Last updated
- 6 Feb 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No