Molecular Mechanisms of Dutasteride and Dietary Interventions to Prevent Prostate Cancer and Reduce Its Progression

NCT ID: NCT01653925

Last Updated: 2025-11-24

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

120 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-10-28

Study Completion Date

2026-12-31

Brief Summary

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The purpose of this study is to determine whether marine omega-3 fatty acids and 5-alpha-reductase inhibitor are effective in the progression of prostate cancer for low-risk prostate cancer patients.

Detailed Description

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The study has a duration of 1 year for each participant. Subjects will be first assigned to a dietary or a dutasteride intervention that they will consume for the first 6 months. After 6 months, all men will have a combined intervention of dutasteride and diet to complete follow-up of 12 months. This will allow us to study interactive effects.

Dietary intervention consists on a high w-3 long-chain fatty acids diet without supplement and to reduce intake of saturated and trans fatty acids.

Prostatic biopsies will be taken at time of diagnosis and at 6 and 12 months after the beginning of the study. Blood will be drawn before each prostate biopsy session and urine will be collected before each prostate biopsy and after digital rectal examination.

Conditions

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Prostatic Neoplasms Low Grade Prostate Cancer

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Dietary intervention first

The dietary intervention will be aimed to increase intake of ω-3 long chain fatty acids and to reduce intake of saturated and trans fatty acids.

Group Type EXPERIMENTAL

Dietary intervention first

Intervention Type OTHER

The dietary intervention will be aimed to increase intake of ω-3 long chain fatty acids and to reduce intake of saturated and trans fatty acids. Three consultations with a nutritionist experienced in clinical trials will be planned over a 6-month period. An additional 2 consultations in the last 6 months with the study nutritionist will be planned for men allocated to the dietary fat intervention arm first. Then, after the 6 months of diet intervention, drug intervention with 5α-Reductase Inhibitor will be add to diet for the 6 following months.

Drug intervention first

Intake of 5α-Reductase Inhibitor

Group Type EXPERIMENTAL

Drug (Dutasteride) intervention first

Intervention Type DRUG

5α-Reductase Inhibitor will be taken daily in tablet dosage form (0.5 mg) taken orally for 12 months depend of the group. After 6 months of drug intake, dietary fat intervention will be add to treatment for the following 6 months. Three consultations with a nutritionist experienced in clinical trials will be planned over this 6-month period.

Interventions

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Dietary intervention first

The dietary intervention will be aimed to increase intake of ω-3 long chain fatty acids and to reduce intake of saturated and trans fatty acids. Three consultations with a nutritionist experienced in clinical trials will be planned over a 6-month period. An additional 2 consultations in the last 6 months with the study nutritionist will be planned for men allocated to the dietary fat intervention arm first. Then, after the 6 months of diet intervention, drug intervention with 5α-Reductase Inhibitor will be add to diet for the 6 following months.

Intervention Type OTHER

Drug (Dutasteride) intervention first

5α-Reductase Inhibitor will be taken daily in tablet dosage form (0.5 mg) taken orally for 12 months depend of the group. After 6 months of drug intake, dietary fat intervention will be add to treatment for the following 6 months. Three consultations with a nutritionist experienced in clinical trials will be planned over this 6-month period.

Intervention Type DRUG

Other Intervention Names

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Dutasteride Dutasteride

Eligibility Criteria

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Inclusion Criteria

* Low-risk prostatic neoplasms
* Candidate for active surveillance
* Informed consent

Exclusion Criteria

* Current fish oil supplementation
* Current NSAID use
Minimum Eligible Age

35 Years

Maximum Eligible Age

75 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

No

Sponsors

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Prostate Cancer Canada

OTHER

Sponsor Role collaborator

CHU de Quebec-Universite Laval

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Vincent Fradet, MD

Role: PRINCIPAL_INVESTIGATOR

Laval University

Locations

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Hotel-Dieu of Quebec

Québec, Quebec, Canada

Site Status

Institute of nutraceuticals and functional food of Laval University

Québec, Quebec, Canada

Site Status

Countries

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Canada

Other Identifiers

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INAF-2010-H09-10-114

Identifier Type: -

Identifier Source: org_study_id

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