What the trial was testing
The GALAHAD enrolled 289 patients with prostate cancer. The study was sponsored by Janssen Research & Development 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
34% tumor response in BRCA-mutated metastatic prostate cancer.
The Lancet Oncology · 2022 · NCT02854436
These findings — that in BRCA-mutated metastatic prostate cancer on niraparib — were published in the The Lancet Oncology and represent the headline result of the study.
Researchers tracked outcomes across 289 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
Niraparib (Zejula) is FDA-approved for ovarian cancer; for prostate cancer the related PARP inhibitors olaparib (Lynparza) and rucaparib (Rubraca) are FDA-approved when BRCA or other DNA-repair mutations are present. Genetic testing on the tumor is required. Ask an oncologist about testing.
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
Prostate Cancer Genetic Risk Evaluation and Screening Study
This study aims to define the natural history of men at high genetic risk for prostate cancer on the basis of specific germline genetic mutations, family history, or Black/African ancestry and evaluate the utility of prostate MRI as a screening tool. The hypothesis is that this targeted population of men are at elevated risk of developing prostate cancer compared to the general population, and enhanced screening with MRI will enable early detection and diagnosis of potentially aggressive prostate cancer, characterization of the penetrance of specific mutations, and potentially identify new genetic risk mutations.
First-in-human Study of 225Ac-PSMA-Trillium (BAY 3563254) in Participants With Advanced Metastatic Castration-resistant Prostate Cancer (mCRPC)
Researchers are looking for a better way to treat participants who have metastatic castration-resistant prostate cancer (mCRPC). mCRPC is a cancer of the prostate (male reproductive gland found below the bladder) that has spread to other parts of the body. This type of prostate cancer does not respond to hormone treatment used to lower the level of testosterone, a male sex hormone, to prevent cancer from growing. The study treatment 225Ac-PSMA-Trillium, also called BAY3563254, is under development to treat advanced metastatic castration-resistant prostate cancer. It works by binding to PSMA and giving off radiation that can damage cancer cells and stop them from growing. The main purpose of this first-in-human study is to learn: * How safe is BAY3563254 in participants. * What is the recommended dose of BAY3563254 that is safe and works well that will be further tested in Part 2 of the study. * How well does BAY3563254 work in participants. To answer this, the researchers will look at: * The number and severity of medical problems including serious medical problems that participants experience after taking BAY3563254 * The number of dose-limiting toxicities (DLT) at each dose level. A DLT is a medical problem caused by a drug that is too severe to continue the use of that specific dose. * The number of participants whose cancer completely disappears (complete response) or reduces by at least 30% (partial response) after taking the treatment (also known as objective response rate (ORR)) * The number of participants who have a decrease in the levels of PSA\* by at least 50% in their blood (also known as PSA50). PSA is a protein made by the prostate gland. High levels of PSA may indicate the presence of prostate cancer. * Participants' best response to treatment based on their PSA levels (also known as the best overall PSA response). The study will have two parts. The first part, called dose escalation, is done to find the most appropriate dose of BAY3563254 for use in the second part of the study. For this, each participant will receive one of different increasing amounts of BAY3563254. They will take BAY3563254 as an injection into a vein. All participants in the second part of the study, called dose expansion, will receive the most appropriate dose of BAY3563254 that was identified from the first part of the study. Participants in this study will take the study treatment once every 6 or 8 weeks, which is known as a treatment cycle. Each participant will have up to 4 of these treatment cycles, if the participant benefits from the treatment. Each participant will be in the study for approximately 6 years, including a screening phase of up to 30 days, 6 months of treatment depending on the participant's benefit, and a follow up phase of 60 months after the end of treatment. In addition, substudies performed during both dose escalation and dose expansion parts of the study will evaluate: * the clearance of radioactivity from the body over time * the doses of radiation that are delivered to normal organs and tumors During the study, the doctors and their study team will: * take blood and urine samples * check vital signs such as blood pressure, heart rate, and body temperature * examine heart health using electrocardiogram (ECG) * take tumor samples if required * check if the participants' cancer has grown and/or spread using CT (computed tomography) or MRI (magnetic resonance imaging) and bone scan * check the tumor status using PET (positron emission tomography) * check the amount of radiation absorbed by tumors and normal organs using SPECT/CT (single-photon emission tomography and computed tomography scan) * ask the participants questions about how they are feeling and what adverse events they are having. An adverse event is any medical problem that a participant has during a study. Doctors keep track of all adverse events, irrespective if they think it is related or not to the study treatments. In addition, the participants will be asked to complete a questionnaire on quality of life at certain time points during the study. The treatment period ends with a visit in 6-12 weeks after the last BAY3563254 dose. About 6-12 weeks after the last dose and every 6 weeks thereafter, the study doctors and their team will check the participants' health and any changes in their cancer. This active follow-up period ends after 18 months. The long-term follow-up period will start after the end of the active follow-up visit and will continue for up to 60 months after the the last BAY3563254 dose. Participants will be contacted, typically by phone call or clinic visit, approximately every 12 weeks after the end of active follow-up.