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Prostate CancerMarch 2024Summary reviewed November 2026

New Radioactive Antibody Shows Promise in Hard-to-Treat Prostate Cancer

Researchers tested a new radioactive treatment targeting prostate cancer cells in 32 patients whose cancer had stopped responding to standard drugs. Nearly half saw their PSA levels drop significantly, and most side effects were manageable, suggesting this approach warrants further testing.

What the trial was testing

The trial enrolled 32 patients with prostate cancer. The study was sponsored by Weill Medical College of Cornell University and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

It was an early-stage trial — researchers are still confirming safety and getting an early look at how well the treatment works. Trials at this stage are designed to produce evidence regulators and physicians can act on — not just observations to follow up later.

What the results showed

47% of patients saw PSA levels drop by at least half with a single injection.

Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2024 · NCT03276572

These findings — that experienced at least 50% drop in PSA levels — were published in the Journal of clinical oncology : official journal of the American Society of Clinical Oncology and represent the headline result of the study.

Researchers tracked outcomes across 32 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with prostate cancer, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

This early-stage study shows a new radioactive therapy may help men with advanced prostate cancer that's resistant to current treatments. The treatment was well-tolerated overall, though some blood-related side effects occurred. This is still experimental and not yet approved—talk to your doctor about whether you might qualify for ongoing trials.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.

Open prostate cancer trials

RecruitingLarge-scale testing

18F-PSMA-1007 PET/CT in Prostate Cancer - Access Trial 2022 to 2028

A two-centre prospective cohort phase III study of 18F-PSMA-1007 PET/CT imaging in specific patient populations: 1. Adults patients (≥18 years old) with a history of radical prostatectomy for treatment of prostate cancer, and a serum prostate specific antigen (PSA) ≥ 0.2 mcg/L 2. Adult patients with a history of radiotherapy, cryotherapy, or brachytherapy for treatment of prostate cancer, and a serum PSA progressively rising to ≥ 2 mcg/L (minimum two samples) OR a serum PSA doubling time of \< 9 months 3. Adult patients with a history of biopsy-proven prostate cancer and high-risk features for metastatic disease prior to treatment with radical prostatectomy, radiotherapy, cryotherapy, or brachytherapy. High-risk features include a Gleason score ≥ 7, serum PSA ≥ 20 mcg/L, OR minimum clinical T-stage T2c 4. Adult patients who do not meet criteria 1-3 but in whom a 18F-PDAM-1007 PET/CT scan is expected to provide clinical benefit as determined by a Urologist, Radiation Oncologist, Medical Oncologist, or Nuclear Medicine physician (licensed in Alberta) The safety of the investigational 18F-PSMA-1007 tracer will be evaluated in 3 ways: 1. The participant will be screened for adverse effects immediately post-injection 2. The participant will be screened for adverse effects immediately after the scan (approximately 2.5 hours after tracer injection) 3. The participant will be provided an information sheet and contact information for self-reporting of any delayed adverse events (1-7 days post injection) The incidence of and activity of non-specific bone lesions will be quantified and evaluated as follows: 1. All lesions categorized as non-specific bone lesions (PSMA-1007 SUVmax \> 2.5 but no corresponding lesion on CT) will be recorded 2. The SUVmax and anatomic location will be recorded for each lesion (max 5 per participant) 3. Recorded lesions will be evaluated a minimum of 1 year post-scan to determine whether they are benign or malignant based on previously published reference standard criteria (Arnfield et al., 2021) 4. Equivocal lesions will be considered unevaluable and will be excluded from assessment of accuracy

Edmonton, Alberta, Canada
RecruitingTesting effectiveness

Randomized Phase II Trial of Targeted Radiation With no Castration for Mcrpc

This trial tests if the combination of comprehensive metastasis directed therapy delivered by a precision form of external beam radiotherapy (stereotactic ablative radiotherapy), combined with PSMA targeted radiopharmaceutical therapy and cessation of castration, and then followed by testosterone replacement, is an effective treatment for metastatic castration resistant prostate cancer. All patients will be treated with stereotactic ablative radiotherapy and PSMA targeted radiopharmaceutical therapy with cessation of castration. Half of patients are randomized to either receive, or not receive, subsequent testosterone replacement.

West Los Angeles, California, United States +3 more