Combination Statin, Acetylsalicylic Acid and Dutasteride Use in Prostate Cancer

NCT ID: NCT01428869

Last Updated: 2011-09-09

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

COMPLETED

Total Enrollment

8231 participants

Study Classification

OBSERVATIONAL

Study Start Date

2011-08-31

Study Completion Date

2011-08-31

Brief Summary

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The purpose of this study is to assess whether there is any interaction between statins, acetylsalicylic acid (ASA) and dutasteride on protection from prostate cancer, the development of high grade prostate cancer, or lower urinary tract symptoms.

Detailed Description

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A review of data collected from REDUCE (REduction by DUtasteride of prostate Cancer Events) study participants will be performed. Data required for the analysis includes: ethnicity, prostate specific antigen (PSA) levels, prostate volumes, presence of diabetes, concomitant medication use (for statin and ASA), prostate biopsy results at 2 and 4 years, body mass index (BMI), digital rectal exam (DRE) results, family history of Prostate Cancer and benign prostatic hyperplasia (BPH) outcomes: urinary retention, international prostate symptom score (IPSS), urinary tract infections (UTI)s.

The association of drug interactions with prostate cancer will be explored by using a multivariate logistic regression model including all possible interaction terms between dutasteride, ASA and statins (i.e. statin+ASA+dutasteride, statin+ASA, dutasteride+statin, dutasteride+ASA). Any interaction term found to be insignificant ( i.e. p\>0.05) will be removed from the model. If a statistically significant interaction term is identified, the study cohort will be stratified by drug use, and the relative risk (RR)of prostate cancer among the different drug users will be reported. To control for potential confounders, a multivariate regression model will be constructed adjusting for age, family history of prostate cancer, DRE results and BMI.

Conditions

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Prostate Cancer

Study Design

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Study Time Perspective

RETROSPECTIVE

Study Groups

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statin+ASA+dutasteride

No interventions assigned to this group

statin+ASA

No interventions assigned to this group

dutasteride+statin

No interventions assigned to this group

dutasteride+ASA

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* Participants who received dutasteride or placebo and had at least one post-baseline prostate biopsy

Exclusion Criteria

* Participants not taking concomitant statins or ASA
Eligible Sex

MALE

Accepts Healthy Volunteers

No

Sponsors

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University Health Network, Toronto

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Neil E Fleshner, MD MPH FRCSC

Role: PRINCIPAL_INVESTIGATOR

University Health Network, Toronto

Locations

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University Health Network

Toronto, Ontario, Canada

Site Status

Countries

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Canada

Other Identifiers

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10-1000AE

Identifier Type: -

Identifier Source: org_study_id

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