Optimal Prostate Study

NCT ID: NCT03386045

Last Updated: 2026-01-29

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

NA

Total Enrollment

503 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-10-02

Study Completion Date

2028-08-01

Brief Summary

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To compare the toxicity, rate of local control, biochemical failure rate and quality of life of three different radiotherapy techniques (moderate hypofractionation, stereotactic body radiotherapy (SBRT) and standard radiotherapy plus 2 fractions of SBRT (BOOSTER)

Detailed Description

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Participants must have histologically proven prostate adenocarcinoma, good performance status and suitable for high dose radiotherapy. There are two groups of participants:

Group 1: eligible participants will be randomised to have either moderate hypofractionation or standard radiotherapy plus SBRT (BOOSTER). Participants in this group must be able to have MRI, prostate fiducial markers (gold markers)and hydrogel insertion. Fiducial markers will be used to locate the prostate accurately during radiation treatment. Hydrogel is a temporary gel being injected into the space between the prostate and rectum to reduce the dose of radiation received by the rectum to minimise side effects from the treatment.

Group 2: eligible participants will be randomised to have either moderate hypofractionation or SBRT.

Participants will be reviewed for side effects. A Safety Committee will be formed containing multi-disciplinary team members. All serious adverse will be reported to the principal investigator and Human Research Ethics Committee within 24 hours.

Conditions

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Prostate Cancer

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

no masking

Study Groups

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Optimal SBRT

Participants in this group will be randomised to either SBRT ( 36 to 45 GY in 5 fractions) or standard radiotherapy (60 Gy in 20 fractions). The allocation is 2 to 1. This means that two thirds of the participants on the trial will get the SBRT (5 treatments) and one third will get the standard fractions.

Group Type ACTIVE_COMPARATOR

Optimal SBRT

Intervention Type RADIATION

Two thirds of the participants in this group will get the SBRT (5 treatments) and one third will get standard treatment (60 Gy in 20 treatments)

Optimal Booster

Participants in this group will be randomised to either standard radiotherapy plus SBRT (45 Gy in 20 fractions plus 20-30 Gy in 2 fractions-Booster) or standard radiotherapy (60 Gy in 20 fractions). The allocation is 2 to 1. This means that two thirds of the participants on the trial will get the Booster arm and one third will get the standard fractions.

Group Type ACTIVE_COMPARATOR

Optimal Booster

Intervention Type RADIATION

Two thirds of the participants in this group will get the two high precision radiotherapy plus 20 doses of standard external beam radiotherapy (ie the "Booster approach\|") and one third will get the standard treatment (60 Gy in 20 treatments)

Interventions

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Optimal SBRT

Two thirds of the participants in this group will get the SBRT (5 treatments) and one third will get standard treatment (60 Gy in 20 treatments)

Intervention Type RADIATION

Optimal Booster

Two thirds of the participants in this group will get the two high precision radiotherapy plus 20 doses of standard external beam radiotherapy (ie the "Booster approach\|") and one third will get the standard treatment (60 Gy in 20 treatments)

Intervention Type RADIATION

Eligibility Criteria

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Inclusion Criteria

* Histologically proven prostate adenocarcinoma
* PSA obtained within three months prior to enrolment
* ECOG performance status 0 to 2
* Ability to understand and the willingness to sign a written consent
* Suitable for high dose irradiation to the prostate

To be eligible for the arm containing Stereotactic Booster alone approach patient must have the following

* No contraindication to MRI such as pacemaker and severe claustrophobia
* Patient must be able to have fiducial markers placed in the prostate
* Patient must be able to have hydrogel insertion at the same time as fiducial markers
* Must have IPSS less than 15

Exclusion Criteria

* Previous pelvic radiotherapy
* Prior total prostatectomy
* Unwilling or unable to give informed consent
Minimum Eligible Age

18 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

No

Sponsors

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Royal North Shore Hospital

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Andrew Kneebone, MBBS

Role: PRINCIPAL_INVESTIGATOR

Northern Sydney Local Health District

Locations

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Royal North Shore Hospital

St Leonards, New South Wales, Australia

Site Status

Countries

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Australia

Other Identifiers

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OPTIMAL

Identifier Type: -

Identifier Source: org_study_id

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