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Fractionated stereotactic radiotherapy plus second-generation antiandrogen for oligometastatic patients with castration-resistant prostate cancer. Phase II Spanish study, prospective, multicenter. (OLIGORESIST)
EU CTIS ID: 2023-505024-62-01
What this study is testing
Determine the PRFS measured from the time of initiation of secondgeneration antiandrogen to the time of radiological progression by choline PET/CT or 68Ga-PSMA PET/CT, in patients with mCRPC treated with the combination of second-generation antiandrogen plus SBRT.
- Therapeutic exploratory (Phase II)
A plain-language read of the study's public EU CTIS listing. The study team confirms the details.
Who can take part
You may be able to join if
- Patients with histologically prostate adenocarcinoma, confirmed with a biopsy.
- Testosterone in biochemical castration ranges (testosterone <50 ng/ml or 1.7 nmol/L) and documented progression: biochemical according to Phoenix criteria or distant by radiological confirmation (PSMA PET/CT or Choline PET/CT).
- Radiological confirmation (with choline-PET/CT or PSMA-PET/CT) of ≤5 node or bone metastasis, non-visceral, eligible to receive SBRT treatment (< 3 cm major diameter in bone metastases, < 5 cm in lymph node metastases). In the case of very close metastases, a limit of up to 5 treatment fields with SBRT is allowed, instead of 5 metastases.
- Patients candidate to receive treatment with abiraterone or enzalutamide as per clinical routine, and treatment selection and prescription assigned by responsible physician before the inclusion in the study or or who has started treatment no more than 14 days prior to signing, as first-line treatment after a diagnosis of oligoresistance.
- Patients must provide written informed consent.
- Life expectancy > 3 months.
You likely can't join if
- Patients with prostate carcinoma with histology other than adenocarcinoma.
- No previous biopsy.
- > 5 metastasis, not approachables in 5 treatment fields
- Patients with visceral metastasis and or metastasis non elegible to receive SBRT.
- Patients with Testosterone above castration levels.
- Patients with prior treatment with docetaxel as first-line CRPC treatment (previous docetaxel treatment is permitted when administered as hormone-sensitive metastatic prostate cancer treatment.
The study team makes the final eligibility decision.
Questions & answers
Do participants get paid in this trial?
This listing doesn't specify compensation. Many trials still reimburse travel or offer a stipend, so it's worth asking the study team when you connect.
Is it free to join, and do I need insurance?
Searching and applying through BridgeMD is free. In clinical trials the study-related treatment and visits are generally provided at no cost to you. You usually don't need insurance to take part - confirm specifics with the study team.
How long does this study last?
The listing doesn't state an exact length. The study team walks you through the schedule and number of visits before you decide to enroll.
Who can join this trial?
This study is enrolling male, 18-64 years, 65+ years. The study team makes the final eligibility decision.
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BridgeMD is an information and trial-matching tool - not medical advice, and not the study sponsor. Details come from EU CTIS; the study team decides eligibility.