Phase 1 Prostate Cancer Trial, Recruiting NCT06441994 Sponsor: Osaka University Condition: Prostate Cancer
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Phase 1 Prostate Cancer Trial, Recruiting

NCT06441994
Recruiting Phase 1

Who may be able to join

AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI

Who might be able to join this trial:

  • People diagnosed with prostate cancer that has stopped responding to hormone therapy (castration-resistant prostate cancer) and is getting worse, shown either by rising PSA levels (at least 2 ng/mL, measured three times at least one week apart, with two readings more than 50% above the lowest recorded level) or by tumour growth or new lesions seen on scans.
  • People whose testosterone levels in the blood remain at a very low "castration level" (below 50 ng/dL).
  • People who have already tried at least one hormone-blocking treatment, such as enzalutamide, apalutamide, or abiraterone acetate, and whose cancer continued to progress.
  • People who have previously received taxane-based chemotherapy (such as docetaxel or cabazitaxel), or for whom that type of chemotherapy was not suitable or was declined.
  • People aged 18 or older at the time of giving consent to join the trial.
  • People who are in reasonably good general health, rated 0 to 2 on a standard medical scale used to measure how much a person's illness affects their daily activities (ECOG Performance Status).
  • People who, based on their current health, are expected to survive for at least 6 months.
  • People who have no brain metastases, or whose brain metastases are present but are currently stable and well controlled.
  • People with no significant problems found in a recent heart tracing (ECG), breathing rate, or blood oxygen levels, checked within 30 days before joining.
  • People whose recent blood test results (within 30 days before joining) fall within the ranges required by the trial protocol.
  • People who are able and willing to use appropriate contraception throughout the trial period, as set out in the trial protocol.
  • People who have been fully informed about the trial, agree to all study procedures, and have signed a consent form.

Who may not be able to join:

  • People who received systemic anti-cancer treatments — such as chemotherapy, immunotherapy, or treatments using monoclonal antibodies — within 4 weeks before enrolling (hormone-blocking treatments are excluded from this restriction).
  • People who received radium-223 (Radium chloride) or Lutetium-177 PSMA-617 therapy within the 6 months before registering.
  • People currently receiving cytotoxic chemotherapy, immunotherapy, radioligand therapy, PARP inhibitors, or AKT inhibitors.
  • People who have, or have recently had, a second separate cancer (either at the same time or within the past 5 years).
  • People who took part in another clinical trial and received an experimental drug within 5 weeks before enrolling.
  • People with an active infection that is not able to be controlled.
  • People who test positive for Hepatitis B surface antigen, Hepatitis C virus antibody (unless the virus is undetectable in the blood), or HIV antibody.
  • People with a mental illness or psychiatric symptoms that the trial team judges would make it difficult to safely participate.
  • People who the trial investigator considers unsuitable for any other reason.

Important: Always verify eligibility with the trial site directly before applying.

Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.

This is a simplified plain English summary of the eligibility criteria. Full criteria are set by the trial investigators and may include additional requirements not shown here. Never self-exclude from a trial based on this summary. Contact the trial site directly to confirm your eligibility.
Last synced 16 July 2026
Phase 1: approximately ~10% of drugs entering this phase reach regulatory approval, based on published industry-wide historical data. This is not specific to this trial.
Phase success rates shown are historical industry-wide averages based on published data. They are not a prediction for this specific trial or your individual situation.

Contact this trial

Phone: +81-6-6879-3434

Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.

GP referral letter

Print a one-page summary to share with your doctor.

Trial details

Status
Recruiting
Phase
Phase 1
Sponsor
Osaka University
Registry
ClinicalTrials.gov
Start date
24 May 2024
Est. completion
31 March 2027

Where this trial is recruiting

🇯🇵 Japan

Primary endpoints

Treatment-related adverse events as assessed by CTCAE v5.0; Dose Limiting Toxicity

Can't join this trial?

Expanded access pathways

If this trial is not available to you, other access pathways may exist. In Australia, the TGA Special Access Scheme allows access to unapproved therapeutic goods for individual patients.

TGA Special Access Scheme information

Find other recruiting trials on ClinicalTrials.gov

Data last synced from ClinicalTrials.gov: 16 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.

Trial recruitment status can change without notice between our nightly data updates. Always contact the trial site directly to confirm current recruitment status before making any decisions or travel arrangements.

View original record on ClinicalTrials.gov