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Prostate-specific Membrane Antigen Positive TumorsNCT02978586

A Pilot Study of [Ga-68]PSMA PET/MRI for the Assessment of PSMA-positive Tumors

An observational study of Prostate-specific Membrane Antigen Positive Tumors and Prostate Cancer, run by Case Comprehensive Cancer Center at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to see if positron emission tomography/ magnetic resonance imaging (PET/MRI) can be used to monitor the effectiveness of cancer treatment using an investigational radioactive drug called [Ga-68]PSMA. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
[Ga-68]PSMA PET/MR
Type of treatment
Medical device
How many people
8 participants
Where
1 siteUnited States
Study dates
14 Mar 2018to 25 Oct 2019
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: Patients diagnosed with tumors expressing PSMA including prostate cancer, breast cancer, lung cancer, renal cancer and other tumor types [Ga-68]PSMA PET/MRI known to express PSMA

Who may be able to join

  • Patients with PSMA-positive tumors including prostate cancer, breast cancer, lung cancer, and other tumor types know to express PSMA
  • Patients able to tolerate PET/MRI scans
  • Informed consent must be given and signed

Who cannot join

  • Subjects who do not meet the above mentioned inclusion criteria
  • Subjects who refuse to give and/or sign the informed consent
  • Patients who have a history of serious adverse events related to a previous MRI or PET/CT
  • Patients who are unable to undergo MRI scanning due to exclusion by institutional MRI restriction policies as mentioned in the standard institutional MRI informed consent form
  • Patients who are currently pregnant or breast feeding. A pregnancy test within 72 hours of the first PET/MRI will be performed.
  • Anti-cancer treatment (chemotherapy and/or radiation therapy) within the last 2 weeks.
  • Renal insufficiency: elevated Creatinine and/or Glomerular Filtration Rate (GFR)<40ml/min/1.7sqm (exclusion criterion only for contrast enhanced MRI)
  • Patients with a known allergy against any component of the contrast enhancing MR agent will not receive MR contrast agents. (exclusion criterion only for contrast enhanced MRI)

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University Hospitals, Case Comprehensive Cancer Center

    Cleveland, Ohio, 44106-5065

Other trials in United States

About this study

The purpose of this study is to see if positron emission tomography/ magnetic resonance imaging (PET/MRI) can be used to monitor the effectiveness of cancer treatment using an investigational radioactive drug called [Ga-68]PSMA.

Read the detailed description

Primary Objective

The primary objective of this pilot imaging study is to determine the feasibility of using positron emission tomography/ magnetic resonance (PET/MR) with [Ga-68] prostate-specific membrane antigen (PSMA) for staging and treatment monitoring of PSMA expressing tumors. [Ga-68]PSMA PET/MR findings will be compared with standard of care imaging, patient follow up, and histopathology if available. [Ga-68]PSMA PET/MR will not be used to change the patients' treatment plan. Investigators will assess PET/MR test-retest reproducibility and compare baseline [Ga-68]PSMA PET/MR with PET/MR after initiation (within 2-6 weeks) of therapy and evaluate if [Ga-68]PSMA is a suitable biomarker for treatment monitoring and assessment of early treatment response.

Secondary Objectives

  • To compare early changes in PET biomarker ([Ga-68]PSMA) tumor uptake with treatment response assessed at completion of therapy (prediction of treatment response).
  • To compare changes in MRI signal intensities (multi-parametric MRI) with treatment response assessed at completion of therapy.
  • To compare results from multi-parametric MR imaging with [Ga-68]PSMA uptake.
  • To assess combinations of quantitative PET and MRI metrics.

Study Design Patients, who enroll in this study, will undergo a baseline [Ga-68]PSMA PET/MR to assess the level of [Ga-68]PSMA tumor uptake. Patients with positive [Ga-68]PSMA tumor uptake (defined as [Ga-68]PSMA uptake twice the background activity) who are receiving systemic therapy will undergo a further [Ga-68]PSMA PET/MR 2-6 weeks after start of treatment. Patients with positive [Ga-68]PSMA tumor uptake will also be offered to participate in a test- retest study with a 2nd [Ga-68]PSMA PET/MR prior to treatment. Patients will therefore undergo a maximum of three [Ga-68]PSMA PET/MR imaging procedures. The first two test-retest Ga-PSMA-PET/MRI will be performed on separate days to allow for radioactive decay. There will be no other (e.g. clinically indicated) PET scan performed on the same day of [Ga-68]PSMA-PET/MRI.

Being tested
[Ga-68]PSMA PET/MR
Keywords
PSMA, PET/MRI
Medical subject headings
Prostatic Neoplasms, Breast Neoplasms, Lung Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • [Ga-68]PSMA PET/MRDevice

    Also called PET/MRI

    All participants will undergo at least 1 baseline [Ga-68]PSMA PET/MR. If participants test positive for [Ga-68]PSMA tumor uptake, they will under up to 2 additional scans

Study groups in NCT02978586
Study groupRoleWhat they receive
[Ga-68]PSMA PET/MRUp to 3 experimental PET/MRI scans will be performed to determine the level of [Ga-68]PSMA tumor uptake
Receives: Device: [Ga-68]PSMA PET/MR

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Test-retest reproducibility of PET biomarker ([Ga68]-PSMA) uptake using PET/MRI

    The outcome measure for the statistical analysis of the test-retest reproducibility will be concordance analysis of standard uptake values (SUVs) between the 2 baseline scans

    Measured: Up to 6 weeks after beginning treatment

Secondary outcomes (7)
  1. Test-retest reproducibility of quantification of MRI sequences (multi-parametric MRI)

    Morphologic imaging will be performed based on standard of care imaging protocols for anatomic detail and localization. Quantitative analysis will include Diffusion weighted imaging (DWI) and Dynamic contrast enhanced MRI (DCE-MRI)

    Measured: Up to 6 weeks after beginning treatment

  2. Ability of PET/MRI to measure changes in PET biomarker [Ga-68]PSMA) tumor uptake after initiation of therapy

    A region of interest (ROI) will be placed in tumor lesions on the digital PET images in order to obtain Standardized Uptake Values (SUV) and/or time activity curves (TACs).

    Relative and absolute differences in tumor SUVs between pre-treatment PET vs. PET after initiation of therapy will be calculated. These differences in [Ga-68]PSMA tumor uptake will be compared with treatment response at completion of therapy (prediction of treatment response).

    Measured: Up to 6 weeks after beginning treatment

  3. Changes in MR signal intensities after initiation of therapy

    Standard morphologic imaging will be obtained in a target area harboring tumor tissue before and after treatment. Quantitative parameters will be obtained in the respective techniques by drawing a region of interest (ROI) in the tumor lesions using dedicated post processing software and interactive workstations. Relative and absolute differences in tumor signal intensities and quantitative parameters will be calculated between pre-treatment PET vs. PET after initiation of therapy. These differences will be compared with treatment response at completion of therapy (prediction of treatment response) as assessed by standard of care imaging

    Measured: Up to 6 weeks after beginning treatment

  4. Comparison of early changes in PET biomarker ([Ga68]PSMA) tumor uptake with treatment response assessed at completion of therapy

    Relative and absolute differences in tumor SUVs between pre-treatment PET vs. PET after initiation of therapy will be compared with treatment response at completion of therapy.

    Measured: Up to 6 weeks after beginning treatment

  5. Comparison of changes in MRI signal intensities (multi-parametric MRI) with treatment response assessed at completion of therapy

    Relative and absolute differences in tumor MRI signal intensities and quantitative parameters as described above between pre-treatment PET vs. PET after initiation of therapy will be compared with treatment response at completion of therapy.

    Measured: Up to 6 weeks after beginning treatment

  6. Comparison of results from multi-parametric MR imaging with [Ga-68]PSMA tumor uptake

    Changes of tumor Ga68-PSMA uptake between baseline and during treatment will be compared with changes in MR multiparametric imaging (e.g. apparent diffusion coefficient (ADC) maps, MR perfusion parameters, changes in T2* maps, etc.). The ability of each PET and MR parameter will be assessed for the ability to predict treatment response.

    Measured: Up to 6 weeks after beginning treatment

  7. Assessment of combinations of quantitative PET and MRI metrics

    Investigators will assess combinations of quantitative PET and MRI metrics regarding their ability to characterize tumors and predict treatment response. Advanced feature extraction and pattern recognition methods will be used to find a combination of fused MRI and PET features that are correlated with disease signature.

    Measured: Up to 6 weeks after beginning treatment

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted1 Dec 2016 (estimated)
  2. Study start14 Mar 2018
  3. Primary completion25 Oct 2019
  4. Study completion25 Oct 2019

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
8 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02978586
Sponsor's protocol ID
CASE7Y16
Status last verified
May 2021
First submitted
22 Nov 2016
Last updated
7 May 2021
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes

Questions about this trial

What is this clinical trial studying?

An observational study of Prostate-specific Membrane Antigen Positive Tumors and Prostate Cancer, run by Case Comprehensive Cancer Center at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 7 May 2021. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Test-retest reproducibility of PET biomarker ([Ga68]-PSMA) uptake using PET/MRI (time frame: Up to 6 weeks after beginning treatment). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 7 May 2021.

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