What the trial was testing
The trial enrolled 43 patients with prostate cancer. The study was sponsored by University of California, San Francisco 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
56% of men with treatment-resistant prostate cancer had their tumors shrink with this two-part approach.
The Lancet. Oncology · 2023 · NCT03805594
These findings — that had confirmed tumor shrinkage with the combination treatment — were published in the The Lancet. Oncology and represent the headline result of the study.
Researchers tracked outcomes across 43 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 was an early-stage study combining radiation that targets cancer cells with an immune drug. The results are promising — over half of men responded — but this treatment is not yet FDA-approved. If you have prostate cancer that's spread and isn't responding to hormone therapy, ask your oncologist about clinical trials testing similar combinations.
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
Frailty in Older Adults With Prostate Cancer: a Prospective Cohort Study
Prostate cancer is the most common solid tumour cancer amongst men in Ireland, with almost 4,000 new cases diagnosed annually and a median age at diagnosis of 67 years. The incidence of frailty amongst cancer patients is high. Among patients undergoing systemic anti-cancer therapy, frailty increases the risk of treatment related toxicity, hospitalisation, and death and is associated with a poorer quality of life. This study aims to describe the demographic, clinical and frailty characteristics of men living with prostate cancer in the Mid-West of Ireland. In addition, we will assess the predictive accuracy of three frailty screening tools currently used in Irish clinical practice,G8, CFS and PRISMA 7, for predicting poorer outcomes at baseline, 6 and 12 months.
IDOV-Immune for Advanced Solid Tumors
This is a Phase I clinical trial evaluating an investigational treatment called IDOV-Immune, a type of oncolytic virus therapy, for adults with advanced solid tumors that have not responded to standard treatments. Oncolytic viruses are designed to infect and destroy cancer cells and have the potential to stimulate the immune system to fight the tumor. The purpose of this study is to determine the safety of IDOV-Immune, how well it is tolerated, and to identify the highest dose that can be safely given. Researchers will also study how the drug behaves in the body, how the immune system responds to it, and whether it shows any signs of shrinking tumors. Participants will receive a single intravenous (IV) infusion of IDOV-Immune and will be closely monitored for side effects and any changes in their cancer. This study is being conducted at multiple sites in the United States and Australia.