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Multicenter Randomized Trial of 68Ga-PSMA-11 PET/CT Based SRT After Radical Prostatectomy (PSMA SRT)

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ClinicalTrials.gov Identifier: NCT03582774
Recruitment Status : Active, not recruiting
First Posted : July 11, 2018
Last Update Posted : October 14, 2020
Sponsor:
Collaborator:
National Cancer Institute (NCI)
Information provided by (Responsible Party):
Jonsson Comprehensive Cancer Center

Study Description
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Brief Summary:
This phase III trial studies how well Gallium Ga 68-labeled PSMA-11 (68Ga-PSMA-11) positron emission tomography (PET)/computed tomography (CT) works in diagnosing participants with prostate cancer that has come back after surgery. 68Ga-PSMA-11 are taken up by cancer cells. Diagnostic procedures, such as PET/CT scans, may help find and diagnose prostate cancer and find out how far the disease has spread. Giving 68Ga-PSMA-11 with PET/CT may help doctors plan better for salvage radiation therapy in participants with recurrent prostate cancer.

Condition or disease Intervention/treatment Phase
Recurrent Prostate Carcinoma Other: Best Practice Procedure: Computed Tomography Radiation: Gallium Ga 68-labeled PSMA-11 Procedure: Positron Emission Tomography Phase 3

Detailed Description:

PRIMARY OBJECTIVE:

I. Success rate of salvage radiation therapy (SRT) measured as biochemical progression-free survival after initiation of SRT.

SECONDARY OBJECTIVES:

I. Sub-group analysis of the primary endpoint (success rate of SRT) within the subgroup with baseline PSA ≥ 0.5 ng/ml II. 5-year biochemical progression-free survival rate (from date of randomization).

III. Metastasis free survival. IV. Initiation of additional salvage therapy after completion of SRT. V. Change in initial treatment intent.

OUTLINE: Participants are randomized to 1 of 2 arms.

ARM I: Participants receive standard of care SRT.

ARM II: Participants receive 68Ga-PSMA-11 intravenously (IV) and 50-100 minutes later undergo whole-body (skull base to mid-thighs) PET/CT. Participants then undergo SRT per the discretion of the treating radiation oncologist.

After conclusion of PET/CT, participants are followed up periodically for up to 5 years.

Study Design
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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 193 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Diagnostic
Official Title: Phase III Randomized Multicenter Trial of 68Ga-PSMA-11 PET/CT Molecular Imaging for Prostate Cancer Salvage Radiotherapy Planning [PSMA-SRT]
Actual Study Start Date : July 12, 2018
Estimated Primary Completion Date : July 12, 2023
Estimated Study Completion Date : July 12, 2024

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Prostate Cancer

Arms and Interventions
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Arm Intervention/treatment
Active Comparator: Arm I (standard of care)
Participants receive standard of care SRT.
 Other: Best Practice
Undergo standard of care
Other Names:
  • standard of care
  • standard therapy
Experimental: Arm II (68Ga-PSMA-11 PET/CT)
Participants receive 68Ga-PSMA-11 IV and 50-100 minutes later undergo whole-body (skull base to mid-thighs) PET/CT. Participants then undergo SRT per the discretion of the treating radiation oncologist.
 Procedure: Computed Tomography
Undergo PET/CT
Other Names:
  • CAT
  • CAT Scan
  • Computerized Axial Tomography
  • Computerized Tomography
  • CT
  • CT Scan
  • tomography

Radiation: Gallium Ga 68-labeled PSMA-11
Given IV
Other Names:
  • (68)Ga labeled Glu-NH-CO-NH-Lys(Ahx)-HBED-CC
  • (68)Ga-labeled Glu-urea-Lys(Ahx)-HBED-CC
  • (68)Ga-PSMA Ligand Glu-urea-Lys(Ahx)-HBED-CC
  • (68)Gallium-PSMA Ligand Glu-urea-Lys(Ahx)-HBED-CC
  • (68Ga)Glu-urea-Lys(Ahx)-HBED-CC
  • 68Ga-DKFZ-PSMA-11
  • 68Ga-HBED-CC-PSMA
  • 68Ga-labeled Glu-NH-CO-NH-Lys(Ahx)-HBED-CC
  • 68Ga-PSMA
  • 68Ga-PSMA-11
  • 68Ga-PSMA-HBED-CC
  • [68Ga] Prostate-specific Membrane Antigen 11
  • [68Ga]GaPSMA-11
  • Ga PSMA
  • Ga-68 labeled DKFZ-PSMA-11
  • Ga-68 labeled PSMA-11
  • Gallium Ga 68 PSMA-11
  • Gallium-68 PSMA
  • Gallium-68 PSMA Ligand Glu-urea-Lys(Ahx)-HBED-CC
  • GaPSMA
  • PSMA-HBED-CC GA-68

Procedure: Positron Emission Tomography
Undergo PET/CT
Other Names:
  • Medical Imaging, Positron Emission Tomography
  • PET
  • PET Scan
  • Positron Emission Tomography Scan
  • Positron-Emission Tomography
  • proton magnetic resonance spectroscopic imaging


Outcome Measures
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Primary Outcome Measures :
  1. Success rate of salvage radiation therapy (SRT) [ Time Frame: From date of initiation of SRT assessed up to 5 years ]
    Will be measured as biochemical progression-free survival after initiation of SRT. Will use a log rank test to compare progression free survival time between the two randomized treatment arms.


Secondary Outcome Measures :
  1. Biochemical progression-free survival rate [ Time Frame: From date of randomization assessed up to 5 years ]
    Will utilize Cox-proportional hazards regression models. These models will include terms for treatment as well as appropriate clinical/demographic covariates (e.g., androgen deprivation therapy [ADT], pelvic lymph node radiation therapy [LN RT], prostate specific antigen [PSA] doubling time, Gleason grade, T stage, age, etc). Residual analyses will be performed to evaluate the proportional hazards assumptions of the Cox model. As a sensitivity analysis, we will also consider survival models that can account for competing risks (ex. death from other causes).

  2. Metastasis free survival [ Time Frame: Up to 5 years ]
    Will utilize Cox-proportional hazards regression models. These models will include terms for treatment as well as appropriate clinical/demographic covariates (e.g., ADT, pelvic LN RT, PSA doubling time, Gleason grade, T stage, age, etc). Residual analyses will be performed to evaluate the proportional hazards assumptions of the Cox model. As a sensitivity analysis, we will also consider survival models that can account for competing risks (ex. death from other causes).

  3. Initiation of additional salvage therapy after completion of SRT [ Time Frame: Up to 5 years ]
    Will utilize Cox-proportional hazards regression models. These models will include terms for treatment as well as appropriate clinical/demographic covariates (e.g., ADT, pelvic LN RT, PSA doubling time, Gleason grade, T stage, age, etc). Residual analyses will be performed to evaluate the proportional hazards assumptions of the Cox model. As a sensitivity analysis, we will also consider survival models that can account for competing risks (ex. death from other causes).

  4. Change in initial treatment intent [ Time Frame: Up to 5 years ]
    Will utilize Cox-proportional hazards regression models. These models will include terms for treatment as well as appropriate clinical/demographic covariates (e.g., ADT, pelvic LN RT, PSA doubling time, Gleason grade, T stage, age, etc). Residual analyses will be performed to evaluate the proportional hazards assumptions of the Cox model. As a sensitivity analysis, we will also consider survival models that can account for competing risks (ex. death from other causes).


Eligibility Criteria
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Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Histopathology proven prostate cancer.
  • Planned SRT for recurrence after primary prostatectomy.
  • Prostate-specific antigen (PSA) >= 0.1 ng/ml at time of enrollment.
  • Willingness to undergo radiotherapy.
  • Treating radiation oncologist intends to incorporate 68Ga-PSMA-11 PET/CT findings into the radiotherapy plan if patient undergoes 68Ga-PSMA-11 PET/CT.

Exclusion Criteria:

  • Extra-pelvic metastasis on any imaging or biopsy.
  • Androgen deprivation therapy (ADT) within 3 months before 68Ga-PSMA-11 PET/CT.
  • Contraindications to radiotherapy (including active inflammatory bowel disease).
  • Concurrent systemic therapy for prostate cancer with investigational agents.
Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03582774


Locations
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United States, California
UCLA / Jonsson Comprehensive Cancer Center
Los Angeles, California, United States, 90095
UCSF Medical Center-Mount Zion
San Francisco, California, United States, 94115
Sponsors and Collaborators
Jonsson Comprehensive Cancer Center
National Cancer Institute (NCI)
Investigators
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Principal Investigator: Jeremie Calais UCLA / Jonsson Comprehensive Cancer Center
More Information
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Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

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Responsible Party: Jonsson Comprehensive Cancer Center
ClinicalTrials.gov Identifier: NCT03582774    
Other Study ID Numbers: 18-000484
NCI-2018-01518 ( Registry Identifier: CTRP (Clinical Trial Reporting Program) )
NUC MED 18-000484
18-000484 ( Other Identifier: UCLA / Jonsson Comprehensive Cancer Center )
P30CA016042 ( U.S. NIH Grant/Contract )
First Posted: July 11, 2018    Key Record Dates
Last Update Posted: October 14, 2020
Last Verified: August 2020

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: Yes
Product Manufactured in and Exported from the U.S.: Yes
Keywords provided by Jonsson Comprehensive Cancer Center:
PSMA
PET/CT
salvage radiation therapy
randomized trial
Additional relevant MeSH terms:
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Prostatic Neoplasms
Genital Neoplasms, Male
Urogenital Neoplasms
Neoplasms by Site
Neoplasms
Prostatic Diseases
 Edetic Acid
Chelating Agents
Sequestering Agents
Molecular Mechanisms of Pharmacological Action
Anticoagulants
Calcium Chelating Agents