Study to Investigate the Effect of Paroxetine Mediated CYP2D6 Inhibition on the Pharmacokinetics of Tamsulosin in Healthy Male Volunteers

October 14, 2014 updated by: Boehringer Ingelheim

An Open Label Randomized Two-way Crossover Study to Investigate the Effect of Paroxetine Mediated CYP2D6 Inhibition on the Single Oral Dose Pharmacokinetics of Tamsulosin in Healthy Male Volunteers (CYP2D6 Extensive Metabolizers)

Study to investigate the effect of CYP2D6 inhibition by paroxetine on the single oral dose pharmacokinetics of tamsulosin and to investigate the effect on safety and tolerability

Study Overview

Status

Status

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

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 (Actual)

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.
24

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 1

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

21 years to 50 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

All participants in the study are

  • Healthy males
  • Ranging from 21 to 50 years of age
  • Body mass index (BMI) within 18.5 to 29.9 kg/m2
  • In accordance with Good Clinical Practice (GCP) and the local legislation all volunteers will have given their written informed consent prior to admission to the study

Exclusion Criteria:

  • Any finding of the medical examination (including blood pressure, pulse rate and ECG) deviating from normal and of clinical relevance
  • Gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological or hormonal disorders, clinically relevant electrolyte disturbances
  • Diseases of the central nervous system (such as epilepsy) or psychiatric disorders or neurological disorders
  • History of orthostatic hypotension, fainting spells or blackouts
  • Chronic or clinically relevant acute infections
  • History of allergy/hypersensitivity (including drug allergy) which is deemed relevant to the trial as judged by the investigator
  • Intake of drugs with a long half-life (> 24:00 hours) within at least one month or less than ten half-lives of the respective drug before enrolment in the study or during the study
  • Use of any drugs which might influence the results of the trial up to 7 days prior to enrolment in the study or during the study
  • Participation in another trial with an investigational drug (within two months prior to administration or during the trial)
  • Smoker (> 10 cigarettes or > 3 cigars of > 3 pipes/day)
  • Inability to refrain from smoking on trial days
  • Alcohol abuse (> 60 g/day)
  • Drug abuse
  • Blood donation (> 100 mL within four weeks prior to administration or during the trial)
  • Any laboratory value outside the reference range if indicative of underlying disease or poor health
  • Excessive physical activities within the last week before the trial or during the trial
  • Hypersensitivity to treatment medication and/or related drugs of these classes
  • Non extensive metabolizer (EM) for CYP2D6

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: Crossover 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: Tamsulosin + Paroxetine

Tamsulosin: q.d on day 1

Paroxetine: higher dose q.d. on days -7 to 2 q.d., lower dose on days -10 to -8 and 3 to 5
Drug: Paroxetine
Other Names:
  • Tagonis®
Drug: Tamsulosin
Other Names:
  • Alna®
Active Comparator: Tamsulosin
Tamsulosin: q.d on day 1
Drug: Tamsulosin
Other Names:
  • Alna®

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
Cmax (maximum measured concentration of tamsulosin HCl in plasma)
Time Frame: up to 48 hours after dosing
up to 48 hours after dosing
AUC0-∞ (area under the concentration-time curve of tamsulosin HCl in plasma over the time interval from 0 extrapolated to infinity)
Time Frame: up to 48 hours after dosing
up to 48 hours after dosing

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
tmax (time from dosing to the maximum measured concentration of tamsulosin HCl in plasma)
Time Frame: up to 48 hours after dosing
up to 48 hours after dosing
AUC0-tz (area under the concentration-time curve of tamsulosin HCl in plasma over the time interval from 0 to the last quantifiable data point)
Time Frame: up to 48 hours after dosing
up to 48 hours after dosing
λz (terminal rate constant of tamsulosin HCl in plasma)
Time Frame: up to 48 hours after dosing
up to 48 hours after dosing
t1/2 (terminal half-life of tamsulosin HCl in plasma)
Time Frame: up to 48 hours after dosing
up to 48 hours after dosing
MRTpo (mean residence time of tamsulosin HCl in the body after oral administration)
Time Frame: up to 48 hours after dosing
up to 48 hours after dosing
CL/F (apparent clearance of tamsulosin HCl in plasma after an extravascular administration)
Time Frame: up to 48 hours after dosing
up to 48 hours after dosing
Vz/F (apparent volume of distribution of tamsulosin HCl during the terminal phase λz following an extravascular administration)
Time Frame: up to 48 hours after dosing
up to 48 hours after dosing
RCmax,T/R (ratio of the Cmax value of the test treatment to the Cmax value of the reference treatment after single dose)
Time Frame: up to 48 hours after dosing
up to 48 hours after dosing
RAUC0-∞,T/R (ratio of the test treatment versus the reference treatment from zero to infinity, expressed as ratio of AUC values after single dose)
Time Frame: up to 48 hours after dosing
up to 48 hours after dosing
Number of subjects with adverse events
Time Frame: up to 21 days after last treatment
up to 21 days after last treatment
Assessment of tolerability by investigator on a 4-point scale
Time Frame: within 21 days after last treatment
within 21 days after last treatment

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.
Boehringer Ingelheim

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

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.
September 1, 2008

Primary Completion (Actual)

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.
December 1, 2008

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).
October 14, 2014

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.
October 14, 2014

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.
October 15, 2014

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.
October 15, 2014

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.
October 14, 2014

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.
October 1, 2014

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.
  • 527.79

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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