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Prostate CancerNCT03677076

Clonal Emergence and Regression During Radium-223 Therapy for Metastatic Prostate Cancer

An observational study of Prostate Cancer, run by Medical University of South Carolina 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

This study is for patients with metastatic prostate cancer receiving radium-223 as their standard of care therapy. The researchers will collect blood and urine samples from patients before, during and after the radium-223 therapy. Read more about this study

Who is it for?
Ages 18 years and older, men only
Conditions the study is for
Prostate Cancer
What is being tested?
Ancillary/Correlative
How many people
14 participants
Where
1 siteUnited States
Study dates
4 Mar 2019to 31 Dec 2023
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
  • Men only
  • No healthy volunteers
  • Adult, Older adult

Study population: adult males with prostate cancer receiving radium223 treatment

Who may be able to join

  • Prostate adenocarcinoma by history or medical records.
  • Two or more bone metastases as demonstrated by imaging studies (technetium bone scan, fluoride PET scan, FDG PET scan, fluciclovine PET scan, CT scan, or MRI scan) or by biopsy.
  • Patients must be on ADT with a GnRH receptor agonist/antagonist or orchiectomy, with or without an anti-androgen or testosterone synthesis inhibitor. Patients must have a documented castrate level of testosterone (<50ng/dL) and be willing to continue their GnRH agonist/antagonist during the course of radium-223 therapy.
  • Patients may have had localized external beam radiation to as much as 20% of the skeleton
  • Adequate hematopoietic, renal, and hepatic function. These parameters include:
  • Hemoglobin ≥ 10gm/dL
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  • WBC ≥ 3.0K/mcL
  • ANC ≥ 1.5K/mcL
  • Platelet count ≥ 100K/mcL
  • Creatinine < 1.5 ng/mL
  • Total bilirubin <1.5 ng/mL.
  • Albumin > 25 g/L
  • Patients should have an elevated, relevant tumor marker such as PSA, CEA, or LDH.
  • Age ≥18 years old
  • Life expectancy of at least 24 weeks
  • Subjects must be able to understand and be willing to sign the written informed consent form. A signed informed consent form must be appropriately obtained prior to the conduct of any trial-specific procedures. Subjects must be willing and able to comply with the protocol, including follow-up visits and examinations.
  • Men of childbearing potential must agree to use adequate contraception beginning at the signing of the informed consent until at least 30 days after the last dose of radium-223 treatment or during the course of radium-223 treatment.
  • Subjects must have had a Guardant 360 ctDNA-based genomic profile performed up to four months prior to the first dose of radium-223, with no new therapy started in the interim. This assay must show at least one single nucleotide variant, either missense or synonymous, or one amplification.
  • Subjects should continue any previously-started bone-hardening agents (zoledronic acid or denosumab) during radium-223 therapy.
  • All acute toxic effects of any prior treatment have resolved to NCI-CTCAE v 5.0 Grade 1 or less at the time of signing the Informed Consent Form (ICF).

Who cannot join

  • Initiation of any additional anti-tumor therapy within 2 months of starting radium-223 treatment
  • Presence of only lytic bone metastases
  • Prior cytotoxic chemotherapy for metastatic PCa
  • Prior systemic therapy with radionuclides (e.g., strontium-89, samarium-153, rhenium-186, or rhenium-188, or Radium Ra 223 dichloride) for the treatment of bony metastases
  • Other malignancy requiring systemic therapy within the last 3 years (except non melanoma skin cancer or low-grade superficial bladder cancer)
  • Visceral (i.e. liver, lung, brain, adrenal, brain, but not lymph node) metastases as assessed by chest, abdominal, or pelvic computed tomography, or other imaging modality)
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  • Lymphadenopathy exceeding 6 cm in short-axis diameter, or any size pelvic lymphadenopathy if it is thought to be a contributor to concurrent hydronephrosis
  • Imminent spinal cord compression based on clinical findings and/or MRI. Treatment should be completed for spinal cord compression.
  • Any infection ≥ Grade 2 per NCI-CTCAE version 5.0
  • Cardiac failure NYHA III or IV
  • Crohn's disease or ulcerative colitis
  • Bone marrow dysplasia, myelodysplasia
  • Fecal incontinence
  • Inability to comply with the protocol and/or not willing or not available for follow-up assessments.
  • Any condition which, in the investigator's opinion, makes the subject unsuitable for trial participation.
  • Concurrent use of abiraterone or enzalutamide. A 28-day washout period is required for both agents.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Medical University of South Carolina

    Charleston, South Carolina, 29425

Other trials in United States

About this study

This study is for patients with metastatic prostate cancer receiving radium-223 as their standard of care therapy. The researchers will collect blood and urine samples from patients before, during and after the radium-223 therapy. The researchers will compare these samples to observe how the treatment has affected different cancer markers.

Read the detailed description

This study proposes to document the presence of clonal emergence and regression during radium-223 therapy for metastatic prostate cancer by serial ctDNA analysis of tumor-associated mutations, using the clinically-available Guardant 360 platform. These data may provide important mechanistic insights into radium-223 therapy by 1) identifying mutations associated with radium-223 resistance or sensitivity, 2) providing new markers of treatment response in an individual, and 3) revealing antitumor effects from radium-223 that are not easily recognized with standard tumor response metrics. Positive finding based on this clinically-available platform will be readily applied by the oncology treatment community.

Conditions
Prostate Cancer
Being tested
Ancillary/Correlative
Medical subject headings
Prostatic Neoplasms

What participants receive

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

  • Ancillary/CorrelativeOther

    Collection of research blood and urine

Study groups in NCT03677076
Study groupRoleWhat they receive
Ancillary/CorrelativePatients will complete questionnaires and have research blood drawn.
Receives: Other: Ancillary/Correlative

What is being measured

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

  1. Minor allele frequency (MAF) in ctDNA

    The primary objective is to estimate average change in MAF in one or more clonal SNVs, comparing baseline to on-treatment, and baseline to post-treatment samples

    Measured: 24 months

Secondary outcomes (5)
  1. Changes in MAF of clonal SNV

    • Determine if changes from baseline in MAF of clonal SNVs during therapy and post-treatment differ significantly from 0.

    Measured: 24 months

  2. Change in clonal mutation MAF and change in pain

    • Evaluate the association between change from baseline in clonal mutation MAF and change in pain (evaluated by VAS pain score and analgesic usage diary), measured both during therapy and post-treatment.

    Measured: 24 months

  3. Change in clonal mutation MAF and change in tumor markers

    • Evaluate the association between change in clonal mutation MAF and change in tumor markers, including prostate specific antigen (PSA), CEA and LDH, measured by standard biochemical assays both during therapy and post-treatment.

    Measured: 24 months

  4. Change in clonal mutation MAF and markers of bone metabolism

    • Evaluate the association between change in clonal mutation MAF and markers of bone metabolism including urine N-telopeptide and serum bone-specific alkaline phosphatase, measured by ELISA assays both during therapy and post-treatment.

    Measured: 24 months

  5. Change in clonal mutation MAF and presence of the TMPRSS2-ERG fusion gene

    • Evaluate the association between change in clonal mutation MAF and presence of the TMPRSS2-ERG fusion gene, measured in plasma/urine by digital PCR Evaluate the association between change in clonal mutation MAF and clinical benefit, (time from the last dose of radium-223 to the initiation of a new systemic therapy, measured at least 60 days after final dose) and change in QOL (measured by FACT-P instrument).

    Measured: 24 months

Timeline

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

  1. First posted19 Sep 2018
  2. Study start4 Mar 2019
  3. Primary completion31 Dec 2023
  4. Study completion31 Dec 2023

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
Case only
Time perspective
Prospective
Enrolment
14 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03677076
Sponsor's protocol ID
102691
Other IDs
IIR-US-2017-4183
Status last verified
Jan 2024
First submitted
18 Sep 2018
Last updated
17 Jan 2024
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

An observational study of Prostate Cancer, run by Medical University of South Carolina 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 20 inclusion and 16 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 Jan 2024. 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?

Minor allele frequency (MAF) in ctDNA (time frame: 24 months). 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 17 Jan 2024.

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