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TerminatedNCT03458234RAD1801Updated May 20, 2024Results posted

RAD 1801: Pilot Study of Intra-Urethral Radiotransponder Beacon Guided Focal Prostate Stereotactic Body Radiotherapy

An interventional study of 16 French Foley Catheter in Prostate Cancer, sponsored by University of Alabama at Birmingham. Terminated at 1 site in United States. Open to male participants aged 19 Years and older. Per ClinicalTrials.gov, last updated 2024-05-20.

Sponsored by University of Alabama at Birmingham · Not applicable, Interventional, and Treatment

Why this study was terminated
No longer manufacturing radiotransponder beacons. No similar product available. The results are no longer expected to have a scholarly or clinical impact. Terminating the study before it reaches its target accrual.
Phase
Not applicable
Study type
Interventional
Enrollment
5
Allocation
Not applicable
Ages
19 Years and older
Sex
Male
01

Study summary

This study offers focal therapy for prostate cancer by using an intra-urethral radiotransponder temporarily placed during radiotherapy. The study aims to improve the risk-benefit ratio of therapy for early prostate cancer and potentially lessen symptom burden over time.

Read the detailed description

This study offers focal stereotactic body radiotherapy for prostate cancer by using an intra-urethral radiotransponder placed temporarily during each of the 5 radiotherapy treatments. The study aims to improve the risk-benefit ratio of therapy for early prostate cancer and potentially lessen symptom burden over time while also accessing early efficacy, late toxicity, and overall quality of life post-treatment. Patients will be followed for 24 months (2 years) with follow-up appointments at 3, 6, 9, 12, 18, and 24 months.

02

Conditions studied

  • Prostate Cancer

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Keywords

  • Focal therapy
  • Prostate cancer
  • SBRT
  • Intra-urethral transponder
03

Who can participate

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

Inclusion criteria

  • All patients must have histologically confirmed adenocarcinoma of the prostate, with biopsies obtained within 12 months of registration

    • Gleason score 3+3 or 3+4
    • PSA \<10 ng/mL within 3 months of enrollment
    • Clinical stage T1a-T2a by digital rectal exam
    • Up to 2 intraprostatic nodules visible on MRI, with combined volume \<50% of the total prostate volume
  • Karnofsky Performance Status (KPS) >70%.
  • Life expectancy >10 years
  • Age ≥ 19 years
  • Subjects given written informed consent

Exclusion criteria

Exclusion Criteria:

  • >2 MRI defined nodules representing prostate cancer
  • Total volume of MRI nodules exceeding 50% of total prostate volume
  • Positive biopsy core in sextant region without MRI defined nodule (i.e. biopsy proven MRI occult prostate cancer)
  • American Urological Association (AUA) urinary score ≥ 18.
  • History of inflammatory bowel disease.
  • Prior pelvic surgery
  • Prior treatment for prostate cancer
  • Patients using immunosuppressive medications or other medications that may increase radiation toxicity such as methotrexate, sirolimus, tacrolimus, or colchicine that are unable to discontinue these medications during SBRT course. Use of corticosteroids is not considered an exclusion criteria.
  • Platelet count \< 70,000/µL
  • Patients unable to discontinue anti-platelet or anti-coagulant medicine such as clopidogrel, dabigatran, warfarin, or low molecular weight heparin. Use of aspirin is not an exclusion criteria.
  • Contraindication to MRI such as implanted devices.
  • Metallic pelvic implants resulting in imaging artifact within the prostate on MRI or CT
04

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
5 participants (actual)

Study arms

  • Experimental
    Focal SBRT with intra-urethral radiotransponder

    This study will enroll patients that have a confirmed histology of prostate cancer. They will undergo a 3T MRI scan as well as a CT simulation with 16 French Foley Catheter containing dummy beacons for treatment planning purposes. The patient will then receive focal stereotactic body radiotherapy (SBRT) at a dose of 40 gy in 5 total fractions. Patients will be followed for 24 total months with specific follow-ups at 3, 6, 9, 12, 18, and 24 months.

    Device: 16 French Foley Catheter

Interventions

  • Device16 French Foley Catheter

    A Foley catheter is a medical apparatus that creates a passageway for the drainage and collection of urine. This type of catheter is made of a pliable material that indwells into an individual's bladder by way of the urethra. Featuring two separate channels down the tube, Foley catheters allow absolute stability and safe extraction. One channel of the catheter, by method of a balloon, is stabilized in a bladder; the other channel allows for the passage and collection of urine, by means of a leg bag or bedside drainage bag. Foley catheters are usually constructed out of either silicone or latex.

05

What researchers measure

Primary outcomes

  1. Confirm the Feasibility of Focal Prostate Stereotactic Body Radiotherapy (SBRT) With Real Time Guidance by Intra-urethral Radiotransponder Beacons.

    Confirm the technical feasibility of using focal prostate stereotactic body radiotherapy (SBRT) instead of traditional treatment methods using a 16-french Foley catheter and real time guidance by intra-urethral radiotransponder beacons.Feasibility will be defined as the ability of the treatment to take place as planned.

    Time frame: 2 years

Secondary outcomes

  1. Assess Early Efficacy

    Clinically assess early efficacy for men receiving focal prostate SBRT for low and low-intermediate risk prostate cancer.Efficacy will be defined as the absence of biochemically detected (via PSA lab testing) prostate cancer or clinically detected prostate cancer

    Time frame: Within 6 months of completion of radiation therapy

  2. Assess Late Toxicity

    Clinically assess late toxicity for men receiving focal prostate SBRT for low and low-intermediate risk prostate cancer. Late toxicity (defined as toxicity occurring \>90 days after treatment) will be assessed with regular clinical exams and patient toxicity questionnaires.

    Time frame: Within 6 months of completion of radiation therapy

  3. Assess Quality of Life

    Clinically assess quality of life for men receiving focal prostate SBRT for low and low-intermediate risk prostate cancer. Late quality of life will be assessed with regular clinical exams and patient quality of life questionnaires.

    Time frame: Within 6 months of completion of radiation therapy

06

Results

Posted May 20, 2024
Limitations and caveats
5 patients signed consent, 1 patient withdrew consent prior to start of treatment. The funding source informed they are no longer manufacturing radiotransponder. No similar product. Therefore, no longer proceeding with study and no data collected.

Participant flow

Participant flow — Overall Study
MilestoneFocal SBRT With Intra-urethral Radiotransponder
Started5
Completed4
Not completed1
Withdrew: Withdrawal by subject1

Outcome measures

PrimaryConfirm the Feasibility of Focal Prostate Stereotactic Body Radiotherapy (SBRT) With Real Time Guidance by Intra-urethral Radiotransponder Beacons.

Confirm the technical feasibility of using focal prostate stereotactic body radiotherapy (SBRT) instead of traditional treatment methods using a 16-french Foley catheter and real time guidance by intra-urethral radiotransponder beacons.Feasibility will be defined as the ability of the treatment to take place as planned.

Time frame:
2 years

No measurements were reported for this outcome.

SecondaryAssess Early Efficacy

Clinically assess early efficacy for men receiving focal prostate SBRT for low and low-intermediate risk prostate cancer.Efficacy will be defined as the absence of biochemically detected (via PSA lab testing) prostate cancer or clinically detected prostate cancer

Time frame:
Within 6 months of completion of radiation therapy

No measurements were reported for this outcome.

SecondaryAssess Late Toxicity

Clinically assess late toxicity for men receiving focal prostate SBRT for low and low-intermediate risk prostate cancer. Late toxicity (defined as toxicity occurring \>90 days after treatment) will be assessed with regular clinical exams and patient toxicity questionnaires.

Time frame:
Within 6 months of completion of radiation therapy

No measurements were reported for this outcome.

SecondaryAssess Quality of Life

Clinically assess quality of life for men receiving focal prostate SBRT for low and low-intermediate risk prostate cancer. Late quality of life will be assessed with regular clinical exams and patient quality of life questionnaires.

Time frame:
Within 6 months of completion of radiation therapy

No measurements were reported for this outcome.

Adverse events

Collected over Each participant was assessed at baseline, during time of treatment, and during follow-up at 3, 6, 9, 12, 18, and 24 months after completion of treatment.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Focal SBRT With Intra-urethral Radiotransponder0/5 (0%)0/5 (0%)0/5 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Focal SBRT With Intra-urethral Radiotransponder
<=18 years0
Between 18 and 65 years2
>=65 years3
Sex: Female, Male
Sex: Female, Male(Participants)Focal SBRT With Intra-urethral Radiotransponder
Female0
Male5
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Focal SBRT With Intra-urethral Radiotransponder
American Indian or Alaska Native0
Asian0
Native Hawaiian or Other Pacific Islander0
Black or African American0
White5
More than one race0
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(participants)Focal SBRT With Intra-urethral Radiotransponder
United States5
07

Study locations

1 site
  • Hazelrig-Salter Radiation Oncology Center
    Birmingham, Alabama 35233, United States
08

References and documents

Study documents

  • Protocol and statistical analysis plan · May 12, 2020
  • Informed consent form · Mar 15, 2023

Documents are hosted by the registry — open the source record to download them.

09

Registry details

Key details

Study ID
NCT03458234
Lead sponsor
University of Alabama at Birmingham
Collaborators
Varian Medical Systems
Responsible party
Andrew McDonald (Assistant Professor - Department of Radiation Oncology, University of Alabama at Birmingham) — Principal investigator
First posted
Mar 8, 2018
Start date
Jan 28, 2020
Primary completion
Apr 20, 2023
Completion
Jun 22, 2023
Results posted
May 20, 2024
Last update
May 20, 2024

Study contacts

Andrew M McDonald, MD
principal investigator · University of Alabama at Birmingham

Oversight

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

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