Androgen Deprivation Therapy for Oligo-recurrent Prostate Cancer in Addition to radioTherapy (ADOPT)

April 1, 2025 updated by: University Medical Center Groningen
The overall aim of this project is to test the hypothesis that the addition of ADT to metastasis-directed radiotherapy (MDRT) in well-selected PCa patients with oligo-metastatic disease prolongs the metastases progression-free survival (MPFS) compared to MDRT alone.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
280

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

  • Name: P. Veldhuijzen van Zanten
  • Phone Number: 0031503614659
  • Email: adopt@rt.umcg.nl

Study Locations

  • Netherlands
      • Groningen, Netherlands
        • UMCG
      • Tilburg, Netherlands
        • Verbeeten Institute
    • Friesland
      • Leeuwarden, Friesland, Netherlands
        • Radiotherapy Institute Friesland
    • Gelderland
      • Arnhem, Gelderland, Netherlands
        • Radiotherapiegroep
      • Nijmegen, Gelderland, Netherlands
        • Radboud University Medical Center
    • Limburg
      • Maastricht, Limburg, Netherlands
        • Maastro Clinic
    • Noord-Brabant
      • Eindhoven, Noord-Brabant, Netherlands
        • Catharina Hospital
    • Noord-Holland
      • Amsterdam, Noord-Holland, Netherlands
        • Amsterdam UMC (Location VUmc)
    • Overijssel
      • Deventer, Overijssel, Netherlands
        • Radiotherapiegroep
      • Zwolle, Overijssel, Netherlands
        • Isala
    • Zuid-Holland
      • Den Haag, Zuid-Holland, Netherlands
        • Haga Hospital
      • Leiden, Zuid-Holland, Netherlands
        • Leinden University Medical Center
      • Rotterdam, Zuid-Holland, Netherlands
        • Erasmus Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion criteria:

  1. Histologically proven initial diagnosis of adenocarcinoma of the Prostate.
  2. Biochemical recurrence of prostate cancer following primary local prostate treatment (radical prostatectomy, primary radiotherapy or radical prostatectomy +/- prostate bed adjuvant salvage radiotherapy) according to the EAU guidelines 2018. BCR after surgery: PSA > 0.1ng/ml. BCR after radiotherapy: PSA nadir +2 ng/ml or 3 consequent rises in PSA level (after exclusion of possible bounce effect).

  3. Minimal 1 lesion and maximum 4 lesions (bone + lymph nodes) in total, without evidence of visceral metastases.

    1. Nodal relapse (N1) in the pelvis on PSMA-PET/CT with a maximum of 4 positive lymph nodes. The upper limit of the pelvis is defined as the aortic bifurcation.
    2. Nodal relapse (M1a) on PSMA-PET/CT above the aortic bifurcation with a maximum of 3 positive lymph nodes.
    3. Bone relapse on PSMA-PET/CT with a maximum of 3 lesions.
    4. Combination of a, b, c with a maximum of 4 metastases.
  4. Age > 18 years.
  5. Recent PSMA-PET/CT scan within 60 days prior to randomization.
  6. PSA < 10 ng/ml.
  7. In case of chronic use of finasteride the PSA value should be < 5 ng/ml.
  8. WHO performance state 0-2.
  9. Signed informed consent prior to registration/randomization.

Exclusion criteria

  1. Visceral metastases.
  2. PSA ≥ 10 ng/ml.
  3. PSA-doubling time ≤ 3 months.
  4. ADT or chemotherapy for recurrent PCa.
  5. Testosterone < 1.7 nmol/l
  6. Painful metastases needed pain medication (> level 1 pain medication) .
  7. Invasive active cancers other than superficial non-melanoma skin cancers.
  8. Inability or unwillingness to understand the information on trial-related topics, to give informed consent or to fill out QoL questionnaires.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Radiotherapy without hormonal therapy
Metastase-directed radiotherapy without the addition of hormonal therapy
Radiation: Radiotherapy
Radiotherapy
Other Names:
  • SBRT
  • Stereotactic body radiotherapy
  • MDRT
  • Metastase-directed radiotherapy
Experimental: Radiotherapy combined with hormonal therapy
Metastase-directed radiotherapy with the addition of of short-term hormonal therapy (6 months)
Radiation: Radiotherapy
Radiotherapy
Other Names:
  • SBRT
  • Stereotactic body radiotherapy
  • MDRT
  • Metastase-directed radiotherapy
Drug: Leuprorelin
Hormonal therapy
Other Names:
  • Eligard

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Metastases progression-free survival (MPFS)
Time Frame: 2.5 years after treatment
The primary aim of this project is to test the hypothesis that the addition of ADT to MDRT in well-selected PCa patients with oligo-metastatic disease (OM) prolongs the metastases progression-free survival (MPFS) compared to MDRT alone
2.5 years after treatment

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University Medical Center Groningen

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Dutch Cancer Society

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: S. Al-Uwini, PhD, UMCG

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 19, 2020

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 21, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 6, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 6, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 10, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 4, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 1, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • RT2019-13

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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