What the trial was testing
The TALAPRO-1 enrolled 128 patients with prostate cancer. The study was sponsored by Pfizer and tracked outcomes across the full group of patients who matched the trial's eligibility profile.
It was initial testing (phase 2). 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
Three in 10 men with gene-altered prostate cancer saw their tumors shrink with this daily pill.
The Lancet. Oncology · 2021 · NCT03148795
These findings — that saw their tumors shrink after other treatments had stopped working — were published in the The Lancet. Oncology and represent the headline result of the study.
Researchers tracked outcomes across 128 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
If you have advanced prostate cancer that stopped responding to hormone therapy and chemotherapy, ask your doctor about genetic testing. If you have certain gene changes (especially BRCA1 or BRCA2), this pill might be an option. This was a mid-stage study and the treatment is not yet widely available. Talk to your doctor about open trials or related approved options.
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
A First-in-human (FIH), Phase 1 Study of ML261, an Autologous Potency Enhanced Anti-DLL3 CAR T Cell Therapy, in Participants With R/R SCLC or Select NECs (SPECTRAL-1)
This is a first-in-human (FIH), open-label, Phase 1 study designed to evaluate the safety, pharmacokinetics (PK), and preliminary efficacy of ML261, an autologous potency enhanced anti-DLL3 CAR T cell therapy, in participants with R/R SCLC or select NECs
Image-guided Focal Brachytherapy Utilizing Combined 18F-DCFPyl PET/CT
The Principal Investigator's (PI) working hypothesis is that the PI can utilize the high predictive value of 18F-DCFPyl PSMA to identify clinically significant tumors in patients who will undergo brachytherapy, as well as areas which are uninvolved or contain only clinically insignificant disease. In the PI's clinical trial, the uninvolved regions (as defined by combined PET-MR-biopsy data) will not be targeted and receive only fall-off dose, which we have shown to be associated with reductions in toxicity.