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Prostate Cancer MetastaticPhase 1/2PROfindNCT03490032

68Ga-PSMA-R2 in Patients With Biochemical Relapse (BR) and Metastatic Prostate Cancer (mPCa)

A Phase 1/2 study testing [68Ga]-PSMA-R2 in people with Prostate Cancer Metastatic, run by Advanced Accelerator Applications at 5 sites in United States.

Completed

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

Official record
Search all trials

Trial summary

This was an open-label, multicenter, single dose, Phase I/II study to evaluate the safety and tolerability of a single administration of 3 mega Becquerel (MBq)/kg, but not less than 150 MBq and not more than 250 MBq, of 68^Ga-PSMA-R2 in adult male patients with biochemical relapse (BR) and metastatic prostate cancer… Read more about this study

Who is it for?
Ages 18 years and older, men only
Conditions the study is for
Prostate Cancer Metastatic
What is being tested?
[68Ga]-PSMA-R2
Could I receive a placebo?
No, everyone receives an active treatment
How many people
30 participants
Where
5 sitesUnited States
Study dates
23 May 2018to 13 Sep 2019
Phase
Phase 1/2
Are there results?
Yes, posted in the registrySummary in the doctors' view

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
  • Men only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Males 18 years or older.
  • Signed and dated written informed consent by the subject prior to any study-specific procedures.
  • Histologically confirmed adenocarcinoma of the prostate, defined as follows:
  • Biochemical recurrence: defined as PSA is ≥0.2 ng/mL after radical prostatectomy or PSA nadir plus 2 ng/mL after radiation therapy with corresponding CT/MRI or bone scan revealing absence of local recurrence or metastatic lesions.
  • OR
  • Metastatic disease: defined as both, castration-sensitive or castration-resistant mPCa (presence of at least 1 metastatic lymph node, visceral metastasis and/or bone metastasis).
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  • At least 2 weeks must have elapsed between last anticancer treatment administration and the administration of the imaging product, 68Ga-PSMA-R2.
  • Prior major surgery must be at least 12 weeks prior to study entry.
  • Eastern Cooperative Oncology Group (ECOG) performance status 0 to 2, with a life expectancy ≥6 months.
  • Adequate bone marrow reserve and organ function as demonstrated by complete blood count, and biochemistry in blood and urine at Screening:
  • Hemoglobin (Hb): >8 g/dL
  • Platelet count of >50.000/mm3
  • Serum creatinine <1.5*upper limit normal (ULN) or estimated glomerular filtration rate (eGFR) >50 mL/min based upon The Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation.
  • For male subjects with partners of childbearing potential, agreement to use barrier contraceptive method (condom) and to continue its use for 28 days after IP administration.

Who cannot join

  • Pathological finding consistent with small cell, neuroendocrine carcinoma of the prostate or any other histologies different than adenocarcinoma.
  • Administered a radioisotope =<10 physical half-lives prior to the day of PET/CT.
  • Current severe urinary incontinence, hydronephrosis, severe voiding dysfunction, or need of indwelling/condom catheters.
  • Uncontrolled pain or incompatibility that results in subject's lack of compliance with imaging procedures.
  • Other known coexisting malignancies except non-melanoma skin or low grade superficial bladder cancer unless definitively treated and proven no evidence of recurrence for 5 years.
  • Subject with known incompatibility to CT scans.
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  • Any evidence of severe or uncontrolled systemic or psychiatric diseases, including uncontrolled hypertension and active bleeding diatheses, which in the investigator's opinion makes it undesirable for the subject to participate in the study or which would jeopardize compliance with the protocol, or active infection including human immunodeficiency virus (HIV) and untreated hepatitis B, hepatitis C. Screening for chronic conditions was not required.
  • Subjects who have received any investigational agent within the last 28 days were excluded from participation in this study.
  • Any acute toxicity due to prior chemotherapy and/or radiotherapy that has not resolved according to the Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Studies.
  • Known allergy, hypersensitivity, or intolerance to the IP or its excipients.
  • Subject unlikely to comply with study procedures, restrictions and requirements and judged by the investigator to be unsuitable for study participation.

Trial locations and contacts

5 sites in 1 country.

5 sites in 1 country

United States5 sites
  • Johns Hopkins Hospital

    Baltimore, Maryland, 21287

  • National Institutes of Health, Warren Grant Magnusen Clinical Center

    Bethesda, Maryland, 20892

  • Smilow Cancer Center at Yale New Haven

    New Haven, Connecticut, 06510

  • Pheonix Molecular Imaging Center

    Phoenix, Arizona, 85040

  • University of California, San Francisco (UCSF)

    San Francisco, California, 94158

Other trials in United States

About this study

Official title: A Phase 1/2 Open-label, Multi-center, Safety and Tolerability Study of a Single Dose of 68Ga-PSMA-R2 in Patients With Biochemical Relapse (BR) and Metastatic Prostate Cancer (mPCa)

This was an open-label, multicenter, single dose, Phase I/II study to evaluate the safety and tolerability of a single administration of 3 mega Becquerel (MBq)/kg, but not less than 150 MBq and not more than 250 MBq, of 68^Ga-PSMA-R2 in adult male patients with biochemical relapse (BR) and metastatic prostate cancer (mPCa).

Read the detailed description

This study consisted of 2 parts.

  • During the first part (Phase I) of the study, 6 subjects with biochemically recurrent prostate cancer (PCa) received the investigational product (IP) and remained at the site for approximately 6 hours post-administration in order to assess the PK, biodistribution versus time, and dosimetry for critical organs. Subjects received a single dose of 3 MBq/kg, (>=150 and =<250 MBq), of 68^Ga-PSMA-R2 intravenously. Serial blood and urine samples were collected for PK characterization and dosimetry and whole-body PET/CT were acquired at selected time points (0 to 4 hours) to determine organ and tumor absorbed doses. Safety assessments were conducted after IP administration on Day 1, and during follow-up on Days 7 and 28.
  • In the second part of the study (Phase II), 2 groups of 12 subjects were enrolled (subjects with PCa in biochemical recurrence [PCa-BR], and subjects with prostate cancer in the metastatic stage [mPCa]). Based on the preliminary data analysis from the Phase I part of the study provided sufficient dosimetry data, all subjects underwent the whole body PET/CT imaging optimized for time (up to 2 time points) according to the data analysis from the Phase I part of the study.

This study was comprised of 4 clinical visits and conducted in 3 study periods: screening, administration/imaging, and safety follow-up period.

Being tested
[68Ga]-PSMA-R2
Keywords
Prostatic Neoplasms, Cancer of Prostate, Cancer of the Prostate, Neoplasms, Prostate, Prostate Cancer, Prostatic Cancer, Genital Neoplasms, Male, Urogenital Neoplasms, Neoplasms by Site, Neoplasms, Genital Diseases, Male, Prostatic Diseases, PSMA, Prostate-specific membrane antigen, Gallium radioisotope 68, 68Ga-PSMA-R2, 68Ga-PSMA ligand
Medical subject headings
Prostatic Neoplasms, Genital Neoplasms, Male, Urogenital Neoplasms, Neoplasms by Site, Neoplasms, Genital Diseases, Male, Prostatic Diseases

What participants receive

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

  • [68Ga]-PSMA-R2Drug

    radio-labelled PSMA ligand

Study groups in NCT03490032
Study groupRoleWhat they receive
Biochemically Recurrent Prostate Cancer (PCa-BR) (Phase I)ExperimentalAll eligible participants received recommended dose of [68Ga]-PSMA-R2 of 3 Mega Becquerel (MBq)/Kg (+/- 10%) [but not more than 250 and not less than 150 MBq].
Receives: Drug: [68Ga]-PSMA-R2
Biochemically Recurrent Prostate Cancer (PCa-BR) (Phase II)ExperimentalAll eligible participants received recommended dose of [68Ga]-PSMA-R2 of 3 Mega Becquerel (MBq)/Kg (+/- 10%) [but not more than 250 and not less than 150 MBq].
Receives: Drug: [68Ga]-PSMA-R2
Metastatic Prostate Cancer (mPCa) (Phase II)ExperimentalAll eligible participants received recommended dose of [68Ga]-PSMA-R2 of 3 Mega Becquerel (MBq)/Kg (+/- 10%) [but not more than 250 and not less than 150 MBq].
Receives: Drug: [68Ga]-PSMA-R2

What is being measured

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

  1. Number of Participants With Treatment Emergent Adverse Events

    Treatment-emergent adverse events (TEAEs) were collected from first dosing (single administration, Day 1) up to last follow-up visit or until the event has resolved to baseline grade or better or the event was assessed stable by the investigator or the patient was lost to follow-up or withdrew consent. The distribution of adverse events was done via the analysis of frequencies for treatment emergent Adverse Event (TEAEs), Serious Adverse Event (TESAEs) and Deaths due to AEs, through the monitoring of relevant clinical and laboratory safety parameters. Only descriptive analysis performed.

    Measured: dosing through 28 days post-dose

Secondary outcomes (16)
  1. Phase I: Decay Corrected Tissue Time-activity Curves (TACs) From 68Ga-PSMA-R2 PET/CT Images in Normal Organs

    PET/CT scans were performed at approximately 20 to 30 min and at 1, 2, 3 to 4 hours postinjection. Time activity curves (TACs) for various organs (Brain, Heart Wall, Kidney, Lacrimal Gland, Liver, Lungs, Salivary Gland, Spleen and Thyroid) were produced as decay-corrected tissue of injected activity (mSv/MBq) per organ. Only descriptive analysis performed.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1 (20-30 min post-injection, 1 hour, 2 hours and 3-4 hours post-injection)

  2. Phase I: Urinary Excretion of [68Ga]-PSMA-R2

    Urine samples were collected (up to 6 hours after dosing) for activity-based pharmacokinetics characterization. The apparent systemic clearance for the analyte in urine (Cl) was summarized with descriptive statistics.

    Measured: 0 to 6 hours post-dose

  3. Phase I: Half-life of 68Ga-PSMA-R2 in Blood

    Serial blood samples were collected (up to 6 hours after dosing) for activity-based pharmacokinetics characterization. The half-life (T^1/2) for the analyte in blood was summarized with descriptive statistics.

    Measured: 0 to 6 hours post-dose

  4. Phase I: Non-decay Corrected Tissue Time-activity Curves (TACs) From 68Ga-PSMA-R2 PET/CT Images in Normal Organs

    PET/CT scans were performed at approximately 20 to 30 min and at 1, 2, 3 to 4 hours postinjection. Time activity curves (TACs) for the various organs were produced as non-decay-corrected fraction of injected activity (mSv/MBq) per organ. Only descriptive analysis performed.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1 (20-30 min post-injection, 1 hour, 2 hours and 3-4 hours post-injection)

  5. Phase I: Residence Times in Normal Organs

    Residence times of radiation in normal organs were summarized with descriptive statistics.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1

  6. Phase I: Absorbed Dose of 68Ga-PSMA-R2

    Absorbed radiation dose of 68Ga-PSMA-R2 in target organs were summarized with descriptive statistics.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1

  7. Phase I: Whole-body Dose of 68Ga-PSMA-R2

    The whole-body dose of 68Ga-PSMA-R2 was summarized with descriptive statistics.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1

  8. Phase I: Effective Dose of 68Ga-PSMA-R2

    The effective dose of 68Ga-PSMA-R2 was summarized with descriptive statistics.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1

  9. Standard Uptake Value (SUV) Mean and Max in Lesions Detected by PET Scans by Timepoint

    Targeting properties of 68Ga-PSMA-R2 were evaluated by semi-quantitatively assessing radiotracer uptake at lesion level, identified via PET/CT imaging (4 scans). The SUVmean and SUVmax (g/mL) of each lesion were calculated and reported by lesion location with summary statistics at all imaging time points.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1 (1 hour, 2 hours post-injection)

  10. Tumor to Background Ratio (TBR) of Lesions Detected by PET Scans by Timepoint

    Targeting properties of 68Ga-PSMA-R2 were evaluated by semi-quantitatively assessing radiotracer uptake at lesion level, identified via PET/CT imaging (4 scans). The lesion Tumor to Background Ratio (TBR) was defined as SUVmax(lesion) / SUVmean(gluteal or thigh) was calculated and reported by lesion location with summary statistics at all imaging time points.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1 (1 hour, 2 hours post-injection)

  11. Standard Uptake Value (SUV) Mean and Max in Lesions Detected by PET Scans and Also Detected by Conventional Scans by Timepoint

    Targeting properties of 68Ga-PSMA-R2 were evaluated by semi-quantitatively assessing radiotracer uptake at lesion level, identified via PET/CT imaging (4 scans). The SUVmean and SUVmax (g/mL) of each lesion were calculated and reported by lesion location with summary statistics at all imaging time points.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1 (1 hour, 2 hours post-injection)

  12. Tumor to Background Ratio (TBR) of Lesions Detected by PET Scans and Also Detected by Conventional Scans by Timepoint

    Targeting properties of 68Ga-PSMA-R2 were evaluated by semi-quantitatively assessing radiotracer uptake at lesion level, identified via PET/CT imaging (4 scans). The lesion Tumor to Background Ratio (TBR) was defined as SUVmax(lesion) / SUVmean(gluteal or thigh) was calculated and reported by lesion location with summary statistics at all imaging time points.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1 (1 hour, 2 hours post-injection)

  13. Standard Uptake Value (SUV) Mean and Max in Lesions Detected by PET Scans and Not Detected by Conventional Scans by Timepoint

    Targeting properties of 68Ga-PSMA-R2 were evaluated by semi-quantitatively assessing radiotracer uptake at lesion level, identified via PET/CT imaging (4 scans). The SUVmean and SUVmax (g/mL) of each lesion were calculated and reported by lesion location with summary statistics at all imaging time points.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1 (1 hour, 2 hours post-injection)

  14. Tumor to Background Ratio (TBR) of Lesions Detected by PET Scans and Not Detected by Conventional Scans by Timepoint

    Targeting properties of 68Ga-PSMA-R2 were evaluated by semi-quantitatively assessing radiotracer uptake at lesion level, identified via PET/CT imaging (4 scans). The lesion Tumor to Background Ratio (TBR) was defined as SUVmax(lesion) / SUVmean(gluteal or thigh) was calculated and reported by lesion location with summary statistics at all imaging time points.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1 (1 hour, 2 hours post-injection)

  15. Patient Level Agreement of 68Ga-PSMA-R2 PET Imaging Relative to Conventional Techniques in Prostate Cancer Patients

    The subject-level positive percent agreement, negative percent agreement, and overall percent agreement was calculated based on the number of subjects with at least 1 positive lesion detected by conventional scan or at least 1 positive lesion detected by PET scan. These percent agreements were calculated as follows:

    • Positive percent agreement: a/(a+c) × 100
    • Negative percent agreement: d/(b+d) × 100
    • Overall percent agreement: (a+d)/(a+b+c+d) × 100

    Where:

    • a = number of subjects with at least 1 positive lesion detected by conventional scan and at least 1 positive lesion detected by PET scan
    • b = number of subjects with at least 1 positive lesion detected by PET scan that was not correlated with conventional scan
    • c = number of subjects with at least 1 positive lesion detected by conventional scan that was not correlated with PET scan
    • d = number of subjects with no lesions detected by conventional scan or PET scan.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1 (1 hour, 2 hours post-injection)

  16. Burden of Tumor Lesions Measured by 68Ga-PSMA-R2 PET (1hr) Scan Compared With Standard Imaging Modality, by Location (Overall)

    The differences of number of positive lesions, number of positive lesions detected by PET scan and/or conventional scan and the location of positive lesions were summarized with descriptive statistics.

    Measured: 68Ga-PSMA-R2 PET imaging acquired at Day 1 (1 hour post-injection)

Timeline

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

  1. First posted6 Apr 2018
  2. Study start23 May 2018
  3. Primary completion20 Aug 2019
  4. Study completion13 Sep 2019

Resources

More details

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

Study design
Study type
Interventional
Phase
Phase 1/2
Primary purpose
Diagnosis
Allocation
Non-randomised
Intervention model
Sequential
Model description
Phase I: characterize PK and dosimetry Phase II: diagnostic potential in 2 groups 1. Prostate Cancer in biochemical relapse, and 2. Metastatic Prostate Cancer
Masking
None (open label)
Enrolment
30 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03490032
Sponsor's protocol ID
A206D-A01-001
Other IDs
CAAA502A12101
Acronym
PROfind
Status last verified
Oct 2020
First submitted
26 Mar 2018
Last updated
17 Nov 2020
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Novartis is committed to sharing with qualified external researchers, access to patient-level data and supporting clinical documents from eligible studies. These requests are reviewed and approved by an independent review panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations. This trial data availability is according to the criteria and process described on www.clinicalstudydatarequest.com

Publications

  • Lindenberg L, Hope TA, Lin FI, Rowe SP, Pucar D, Gilbert N, Chicco D, He B, Feuerecker B, Castaldi E, Solnes LB. Safety, Dosimetry, and Feasibility of [68Ga]Ga-PSMA-R2 as an Imaging Agent in Patients with Biochemical Recurrence or Metastatic Prostate Cancer. J Nucl Med. 2025 Mar 3;66(3):359-365. doi: 10.2967/jnumed.124.268318.

    PubMed 39915126

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing [68Ga]-PSMA-R2 in people with Prostate Cancer Metastatic, run by Advanced Accelerator Applications at 5 sites 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 14 inclusion and 11 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 17 Nov 2020. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 5 sites 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.

What does this combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 17 Nov 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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?

Number of Participants With Treatment Emergent Adverse Events (time frame: dosing through 28 days post-dose). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03490032, which also lists 1 linked publication.

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 17 Nov 2020.

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