Feasibility Study of Stereotactic Body Radiotherapy (SBRT) for Localized Prostate Cancer: Cyberknife vs. VMAT

January 18, 2015 updated by: Dr. Himu Lukka, Juravinski Cancer Center

Randomized Feasibility Study of Stereotactic Body Radiotherapy (SBRT) for Localized Prostate Cancer: Cyberknife vs. Volume Modulated Arc Therapy

Recent studies support the use of Stereotactic Body Radiation Therapy (SBRT) for the treatment of localized prostate cancer (PrCa). SBRT is a way to deliver radiation very precisely allowing higher doses to be delivered with fewer treatments, potentially improving patient outcomes. Cyberknife and Volume Modulated Arc Therapy (VMAT) are accepted SBRT techniques. However, the effects of the specific SBRT treatment technique on patient outcomes have not been evaluated in randomized trials.

Although such a trial would be of great interest, patients' willingness to participate is unclear. Multiple patient and clinician factors contribute to the decision to enter a randomized trial. This feasibility study will evaluate patients' willingness to participate in a trial comparing Cyberknife and VMAT SBRT for the treatment of early stage PrCa. Patients accepting enrolment will be randomized to one of the two types of SBRT delivery. Up to 66 patients will be approached, and up to 40 randomized. A questionnaire will help to identify the factors influencing the patient's decision to participate or not. This study will gather information on feasibility, PSA control, patient outcomes and side effects, and will inform the design of a future randomized phase II/III study.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
40

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.
  • Name: Joanna Laba, MD
  • Phone Number: 64702 905-387-9495
  • Email: labaj@hhsc.ca

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Histologically confirmed diagnosis of adenocarcinoma of the prostate
  • Histological evaluation of prostate biopsy with assignment of a Gleason score to the biopsy material; Gleason scores ≤ 7
  • Clinical stage T1-2b (AJCC 7th edition)
  • PSA ≤ 10 ng/mL. PSA should not be obtained within 10 days after prostate biopsy.
  • ECOG Performance Status 0-1

Exclusion Criteria:

  • Prior or concurrent invasive malignancy (except non-melanomatous skin cancer) or lymphomatous/hematogenous malignancy unless continually disease free for a minimum of 5 years.
  • Evidence of distant metastases
  • Regional lymph node involvement
  • Previous radical surgery (prostatectomy), cryosurgery, or HIFU for prostate cancer. Previous pelvic irradiation, prostate brachytherapy, or bilateral orchiectomy
  • Previous hormonal therapy, such as LHRH agonists or LHRH antagonists, anti-androgens, estrogens, or surgical castration
  • Use of finasteride or dutasteride within 30 days prior to registration. PSA should not be obtained prior to 30 days after stopping finasteride or dutasteride.
  • Previous or concurrent cytotoxic chemotherapy for prostate cancer
  • Age < 18
  • Patient unable to provide study-specific informed consent
  • Inability to complete the Expanded Prostate Cancer Index Composite (EPIC) questionnaire

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Cyberknife
Cyberknife based SBRT 36.25 Gy in 5 fractions
Radiation: Stereotactic Body Radiotherapy
Experimental: Volume Modulated Arc Therapy
Volume Modulated Arc Therapy based SBRT 36.25 Gy in 5 fractions
Radiation: Stereotactic Body Radiotherapy

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Patient acceptability of a randomized trial comparing Cyberknife and Volume Modulated Arc Therapy (VMAT) based SBRT techniques for the treatment of localized prostate cancer as measured by number of patients willing to participate in randomized trial.
Time Frame: 15 months
15 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Juravinski Cancer Center

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Juravinski Cancer Centre Foundation

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 1, 2015

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 1, 2016

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
January 13, 2015

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 18, 2015

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
January 26, 2015

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
January 26, 2015

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 18, 2015

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
January 1, 2015

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • RD-157

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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