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Adenocarcinoma of the ProstateNCT01408706

The Prostate Immobilization Device Study

A study testing Miller Air tip and Radiadyne Immobilizer in people with Adenocarcinoma of the Prostate, run by James Taylor 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 compare reproducibility of the device position and location of the prostate rectum interface between two immobilization devices for radiation therapy of prostate carcinoma. Read more about this study

Who is it for?
Ages 18 years and older, men only
Conditions the study is for
Adenocarcinoma of the Prostate
What is being tested?
Miller Air tip and Radiadyne Immobilizer
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
60 participants
Where
1 siteUnited States
Study dates
Aug 2011to Oct 2014
Phase
Interventional
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

  • 18 years of age or older
  • Clinically localized T1-3 N0-1 M0 adenocarcinoma of the prostate
  • Planned definitive radiation therapy

Who cannot join

  • Prior proctectomy
  • Rectal surgery within one year
  • Proctitis
  • Rectal carcinoma
  • Anal Stenosis
  • History of inflammatory bowel disease
Show all 9Show fewer
  • Scleroderma
  • Systemic sclerosis
  • Refusal of treatment with immobilization device

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Wheaton Francsican Cancer Care - All Saints

    Racine, Wisconsin, 53405

Other trials in United States

About this study

The purpose of this study is to compare reproducibility of the device position and location of the prostate rectum interface between two immobilization devices for radiation therapy of prostate carcinoma.

Read the detailed description

The investigator assessed the device position and location of the interface between rectum and prostate weekly during the course of treatment. This information was obtained using a conebeam CT scan on the treatment couch prior to a regularly scheduled radiation treatment. The conebeam CT scan is a standard tool for monitoring patient position and radiation treatment accuracy. Prior to each radiation treatment, the patient was placed in a vaclock immobilization device, then aligned with room lasers to skin tattoos. On board portal imaging was then employed using the KvKv match technique to place isocenter as simulated. For intact prostate treatment, alignment was made to implanted gold fiducial markers. For post prostatectomy patients, the alignment was to pelvic bony anatomy. After patient alignment was complete, a conebeam CT scan was obtained. The position of the anterior rectal wall and the interface between prostate and rectum was compared to the position of these structures at the time of simulation. Measurement was taken in the midline of the prostate gland between its base and apex of the maximum deviation of the rectum prostate interface from its position at the time of simulation. For post prostatectomy patients, a measurement was taken of the maximum deviation from simulation of interface between the rectum and the prostate bed/bladder. These measurements were recorded weekly by the treating radiation oncologist on the Physician Data Sheet.

The difficulty of device insertion, positioning and inflation was recorded daily by the treating personnel based on a scale in the PIDS Daily Radiation Therapist Questionnaire, from 1(none) to 5(unable to insert). These results were summarized by the clinical study coordinators on the PIDS Radiation Therapist Summary.

Patient expression of discomfort during device placement was recorded daily by treating personnel based on a scale in the PIDS Daily Radiation Therapist Questionnaire, from 1(none) to 5(intolerable). These responses will be summarized by the clinical study coordinators on the PIDS Radiation Therapist Summary.

Being tested
Miller Air tip, Radiadyne Immobilizer

What participants receive

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

  • Miller Air tipDevice

    Also called Miller Enema Air Tip

    Miller Enema Air Tip is inserted into rectum prior to simulation and each radiation treatment.

  • Radiadyne ImmobilizerDevice

    Radiadyne Immobilizer is inserted into rectum prior to simulation and each radiation treatment

Study groups in NCT01408706
Study groupRoleWhat they receive
Miller enema air tipActive comparatorThe Miller enema air tip rectal balloon is inserted into the rectum prior to radiation simulation and also prior to each radiation treatment to immobilize prostate gland and displace rectal tissue during radiation therapy.
Receives: Device: Miller Air tip
Radiadyne ImmobilizerActive comparatorThe Radiadyne Immobilizer Treatment Device is inserted into the rectum prior to radiation simulation and also prior to each radiation treatment to immobilize prostate gland and displace rectal tissue during radiation therapy
Receives: Device: Radiadyne Immobilizer

What is being measured

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

  1. Deviation of the Prostate Rectal Interface From Its Position at Time of Simulation.

    Measurements will be taken for at least 5, and up to 9, occasions on a weekly basis during each patient's course of treatment. An average value will be determined for each patient. An average of individual patient values will be determined for each immobilization device.

    Measured: Up to 9 weeks

Secondary outcomes (2)
  1. Difficulty of Insertion.

    Difficulty of device insertion was scored for each treatment by the treating radiation therapist on a scale from 1(easiest) to 5(most difficult). An average score was obtained at completion of therapy for each patient. At completion of the study, an average value was obtained for each immobilization device by averaging the average score for each patient .

    Measured: Up to nine weeks

  2. Patient Expression of Discomfort

    Patient expression of discomfort was scored for each insertion by the treating radiation therapist on a scale from 1(none) to 5(intolerable). An average score was obtained at completion of therapy for each patient. At completion of the study, an average value was obtained for each immobilization device by averaging the average score for each patient .

    Measured: Up to nine weeks

Timeline

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

  1. First posted3 Aug 2011 (estimated)
  2. Study startAug 2011
  3. Primary completionOct 2014
  4. Study completionOct 2014

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 N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
60 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01408706
Sponsor's protocol ID
11-019-ASH
Status last verified
Jun 2017
First submitted
25 Jul 2011
Last updated
29 Jun 2017
Data monitoring committee
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A study testing Miller Air tip and Radiadyne Immobilizer in people with Adenocarcinoma of the Prostate, run by James Taylor 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 9 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 29 Jun 2017. 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?

Yes. Results are posted in the registry (first posted 29 Jun 2017). 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?

Deviation of the Prostate Rectal Interface From Its Position at Time of Simulation. (time frame: Up to 9 weeks). 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 29 Jun 2017; AzTrials last refreshed its copy on 26 Oct 2026.

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