ClinicalTrials.gg
TerminatedNCT04264208Updated Feb 1, 2024Results posted

HDR Brachytherapy 68-Ga-RM2 PET, 68-Ga-PSMA-11 PET &Multi Parametric MRI in Prostate Cancer

A Phase 2 interventional study of 68-Ga RM2. and 68-Ga PSMA11 in Prostate Cancer, sponsored by Andrei Iagaru. Terminated at 1 site in United States. Open to male participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-02-01.

Sponsored by Andrei Iagaru · Phase 2, Interventional, and Treatment

Why this study was terminated
Lack of accrual due to pandemic and logistics
Phase
Phase 2
Study type
Interventional
Enrollment
4
Allocation
Randomized
Ages
18 Years and older
Sex
Male
01

Study summary

This study is being conducted to determine whether the combination of imaging agents 68-Ga RM2 and 68-Ga PMSA11 is better at assessing response to high dose rate (HDR) local therapy than standard imaging or biopsy in patients with known prostate cancer (PC)

Read the detailed description

Primary Objective:

  1. To demonstrate that 68Ga-RM2 and 68Ga-PSMA-11 PET/MRI can detect additional cancers over mpMRI.
  2. To demonstrate that 68Ga-RM2 and 68Ga-PSMA-11 PET/MRI can assess changes in response to treatment and predict progression free survival (PFS) at 24 months.
02

Conditions studied

  • Prostate Cancer

Browse trials for

03

In context

Prostatic Neoplasms

7,046 studies on the registry are indexed under Prostatic Neoplasms; 1,580 are open to participants now.

This study's enrollment of 4 is below the median of 60 across 5,348 interventional studies indexed under Prostatic Neoplasms.

Browse Prostatic Neoplasms studies →

Lead sponsor

Andrei Iagaru is the lead sponsor of 16 studies on the registry; 1 is open to participants now.

Of its 12 completed or terminated interventional studies of FDA-regulated products, 12 (100%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Male
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients must be at least 18 years of age;
  • Patients must be able to provide ;
  • proven low-grade or intermediate-grade prostate cancer (PC)
  • Scheduled to undergo targeted local therapy (HDR brachytherapy).

Exclusion criteria

Exclusion Criteria:

  • Inability to lie still for the entire imaging time;
  • Inability to complete the needed and standard-of-care imaging examinations due to other reasons (severe claustrophobia, radiation phobia, etc.);
  • Any additional medical condition, serious intercurrent illness, or other extenuating circumstance that, in the opinion of the Investigator, may significantly interfere with study compliance;
  • Metallic implants ( for MRI).
Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
4 participants (actual)

Study arms

  • Experimental
    68Ga-RM2 PET MRI then 68 Ga PMSA11 PET/MRI

    Subjects will undergo either 68Ga RM2 PET/MRI followed within 2 weeks by 68Ga PMSA11 PET/MRI. Two x intravenous (IV) 68Ga-RM2 PET/MRI with a 68Ga dosage of 140 mBq (3.8 mCi), +/- 20%, Two x intravenous (IV) 68Ga-PMSA11 PET/MRI with a 68Ga dosage of 111 to 259 mBq (3 to 7 mCi)

    Drug: 68-Ga RM2. · Drug: 68-Ga PSMA11 · Device: PET/MRI

  • Experimental
    68Ga-PSMA-11 PET MRI then 68Ga-RM2 PET MRI

    Subjects will undergo 68Ga PMSA11 PET/MRI followed within 2 weeks by 68Ga RM2 PET/MRI. Two x intravenous (IV) 68Ga-RM2 PET/MRI with a 68Ga dosage of 140 mBq (3.8 mCi), +/- 20%, Two x intravenous (IV) 68Ga-PMSA11 PET/MRI with a 68Ga dosage of 111 to 259 mBq (3 to 7 mCi)

    Drug: 68-Ga RM2. · Drug: 68-Ga PSMA11 · Device: PET/MRI

Interventions

  • PET radiopharmaceutical

    Also known as: BAY86 7548, 68Ga DOTA Bombesin

  • PET radiopharmaceutical

    Also known as: DFKZ 11, HBED CC PSMA, Heidelberg compound

  • DevicePET/MRI

    PET/MR scanner by GE healthcare

    Also known as: PET/MR scanner

06

What researchers measure

Primary outcomes

  1. Number of Participants With Successful Assessment of PET Based PC Lesions

    Assessment of whether 68-Ga-RM2 and 68-Ga-PSMA-11 PET/MRI can detect additional cancers over mpMRI. Detection of PC lesions will be assessed by 68Ga PSMA11 and 68Ga RM2 PET scans.

    Time frame: Day 1 (first scan) and 2 weeks (second scan) relative to baseline. First scan was approximately 2 months prior to HDR treatment

  2. Number of Participants for Which an Assessment of PET Based Therapeutic Response to HDR is Successfully Obtained

    Assessment of whether 68Ga-RM2 and 68Ga-PSMA-11 PET/MRI can assess changes in response to treatment. Therapeutic response to HDR will be assessed by 68Ga PSMA 11 and 68Ga RM2 PET scans. Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR.

    Time frame: Day 1 (first scan) and 2 weeks (second scan) relative to baseline. First scan was approximately 2 months prior to HDR treatment

  3. Progression Free Survival (PFS)

    Progression-free survival (PFS) will be assessed as survival without progression at 24 months. The outcome is reported as the number (without dispersion) of the participants alive without progression.

    Time frame: 24 months

07

Results

Posted Feb 1, 2024
Limitations and caveats
Early termination led to a small number of subjects analyzed

Participant flow

Pre-HDR Scan Sequence
Participant flow — Pre-HDR Scan Sequence
Milestone68Ga-RM2 PET MRI Then 68Ga PSMA 11 PET/MRI68Ga-PSMA-11 PET MRI Then 68Ga-RM2 PET MRI
Started12
Received first scan in sequence12
Received second scan in sequence01
Completed12
Not completed00
HDR Treatment at 2 Months
Participant flow — HDR Treatment at 2 Months
Milestone68Ga-RM2 PET MRI Then 68Ga PSMA 11 PET/MRI68Ga-PSMA-11 PET MRI Then 68Ga-RM2 PET MRI
Started12
Completed12
Not completed00
Post-HDR Scan Sequence at 10 Months
Participant flow — Post-HDR Scan Sequence at 10 Months
Milestone68Ga-RM2 PET MRI Then 68Ga PSMA 11 PET/MRI68Ga-PSMA-11 PET MRI Then 68Ga-RM2 PET MRI
Started12
Received first scan in sequence01
Received second scan in sequence01
Completed12
Not completed00

Outcome measures

PrimaryNumber of Participants With Successful Assessment of PET Based PC Lesions

Assessment of whether 68-Ga-RM2 and 68-Ga-PSMA-11 PET/MRI can detect additional cancers over mpMRI. Detection of PC lesions will be assessed by 68Ga PSMA11 and 68Ga RM2 PET scans.

Time frame:
Day 1 (first scan) and 2 weeks (second scan) relative to baseline. First scan was approximately 2 months prior to HDR treatment
Reported as:
Count of participants · Participants
Number of Participants With Successful Assessment of PET Based PC Lesions
Participants68Ga-RM2 PET MRI68Ga-PSMA-11 PET MRI
Number of Participants With Successful Assessment of PET Based PC Lesions22
PrimaryNumber of Participants for Which an Assessment of PET Based Therapeutic Response to HDR is Successfully Obtained

Assessment of whether 68Ga-RM2 and 68Ga-PSMA-11 PET/MRI can assess changes in response to treatment. Therapeutic response to HDR will be assessed by 68Ga PSMA 11 and 68Ga RM2 PET scans. Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR.

Time frame:
Day 1 (first scan) and 2 weeks (second scan) relative to baseline. First scan was approximately 2 months prior to HDR treatment
Reported as:
Count of participants · Participants
Number of Participants for Which an Assessment of PET Based Therapeutic Response to HDR is Successfully Obtained
Participants68Ga-RM2 PET MRI68Ga-PSMA-11 PET MRI
Number of Participants for Which an Assessment of PET Based Therapeutic Response to HDR is Successfully Obtained11
PrimaryProgression Free Survival (PFS)

Progression-free survival (PFS) will be assessed as survival without progression at 24 months. The outcome is reported as the number (without dispersion) of the participants alive without progression.

Time frame:
24 months

No measurements were reported for this outcome.

Adverse events

Collected over up to 13 months. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
68Ga-RM2 PET MRI0/3 (0%)0/3 (0%)0/3 (0%)
68Ga-PSMA-11 PET MRI0/3 (0%)0/3 (0%)0/3 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)68Ga-RM2 PET MRI Then 68Ga PSMA 11 PET/MRI68Ga-PSMA-11 PET MRI Then 68Ga-RM2 PET MRITotal
<=18 years000
Between 18 and 65 years000
>=65 years123
Sex: Female, Male
Sex: Female, Male(Participants)68Ga-RM2 PET MRI Then 68Ga PSMA 11 PET/MRI68Ga-PSMA-11 PET MRI Then 68Ga-RM2 PET MRITotal
Female000
Male123
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)68Ga-RM2 PET MRI Then 68Ga PSMA 11 PET/MRI68Ga-PSMA-11 PET MRI Then 68Ga-RM2 PET MRITotal
Hispanic or Latino101
Not Hispanic or Latino022
Unknown or Not Reported000
Region of Enrollment
Region of Enrollment(Participants)68Ga-RM2 PET MRI Then 68Ga PSMA 11 PET/MRI68Ga-PSMA-11 PET MRI Then 68Ga-RM2 PET MRITotal
United States123
08

Study locations

1 site
  • Stanford Cancer Center
    Stanford, California 94304, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Feb 2020 to primary completion in Nov 2022, 33 months.

Results were first posted in Feb 2024, 1 year 2 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 4, 2020
First posted
Feb 11, 2020
StartActual
Feb 5, 2020
Primary completionActual
Nov 22, 2022
CompletionActual
Dec 14, 2022
Results first posted
Feb 1, 2024
Last update
Feb 1, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Feb 1, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04264208
Lead sponsor
Andrei Iagaru
Responsible party
Andrei Iagaru (Professor of Radiology (Nuclear Medicine), Stanford University) — Sponsor-investigator
First posted
Feb 11, 2020
Start date
Feb 5, 2020
Primary completion
Nov 22, 2022
Completion
Dec 14, 2022
Results posted
Feb 1, 2024
Last update
Feb 1, 2024

Study contacts

Andrei H Iagaru, MD
principal investigator · Stanford University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Jan 2024. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drugs tested here: Rm-2 ga-68 · Gallium 68 PSMA-11

Start the discussion