A Study of the Effects of Paroxetine on the Pharmacokinetics of Paliperidone ER

May 18, 2011 updated by: Johnson & Johnson Pharmaceutical Research & Development, L.L.C.

A Randomized, Open-label, Single-center, Crossover Study of the Potential Effects of Paroxetine on the Pharmacokinetics of a Single Dose of Paliperidone Extended-release in Healthy Men

The purpose of this study is to evaluate the effects of a CYP2D6 inhibitor, paroxetine, on the pharmacokinetics of a single dose of orally administered paliperidone ER and to evaluate the safety and tolerability of both treatments in healthy men

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

This is a randomized, open-label, single-center, single-dose, 2 treatment, 2 way crossover study. It consists of 3 phases: a screening phase beginning within 21 days before the first study drug administration; an open label treatment phase consisting of 2 treatment periods (Period 1 and Period 2), during which patients will receive 2 single doses of 3 mg paliperidone ER; and end of study evaluations upon completion of all the study procedures in Period 2 or at early withdrawal. All volunteers will receive each of the following 2 treatments in random order: Treatment A: 1 tablet of 3 mg paliperidone ER in the fasted state; Treatment B: one 20 mg paroxetine tablet once a day from Day 1 to Day 13 and 1 tablet of 3 mg paliperidone ER on Day 10 in the fasted state. Successive paliperidone ER administrations will be separated by a washout period of at least 14 days and no more than 28 days. Paroxetine is a potent and selective CYP2D6 inhibitor. Inhibitors of CYP2D6 such as paroxetine have been reported to increase the plasma concentrations of antipsychotics such as perphenazine, clozapine, and risperidone. Because paliperidone ER and paroxetine could potentially be used in combination in schizophrenic patients, the potential for a drug-drug interaction between paroxetine and paliperidone ER needs to be explored.The safety and tolerability of the 3 mg tablet of paliperidone ER administered with and without paroxetine to healthy men will be monitored.

Two single oral doses of paliperidone ER 3-mg; 20-mg paroxetine orally once a day for 13 days

Study Type

Interventional

Enrollment (Actual)

60

Phase

  • 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

Ages Eligible for Study

18 years to 55 years (ADULT)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Body mass index (weight [kg]/height [m2]) of 18 to 30 kg/m2, inclusive
  • Extensive metabolizer of CYP2D6. Volunteers whose CYP2D6 genotype is unknown should have been phenotyped before the start of the study using dextromethorphan as a probe (i.e., have a dextromethorphan metabolic ratio <0.02, as determined according to the standard procedures of the study center)
  • Have a supine (after 5 minutes rest) blood pressure between 100 and 140 mmHg systolic, inclusive, and 50 and 90 mmHg diastolic, inclusive
  • Smokes no more than 10 cigarettes, or 2 cigars, or 2 pipes per day and has been following this pattern for at least 3 months before screening
  • Healthy on the basis of a prestudy physical examination, medical history, 12-lead ECG, and the laboratory results of serum chemistry, hematology, and urinalysis performed within 21 days before the first dose. If the results of the serum chemistry, hematology, or urinalysis testing are not within the laboratory's reference ranges, the volunteer can be included only if the investigator judges that the deviations are not clinically significant. For renal function tests, the values must be within the normal laboratory reference ranges

Exclusion Criteria:

  • Poor or intermediate metabolizers of CYP2D6, as determined by genotyping or phenotyping using dextromethorphan
  • Known drug allergy to risperidone, paliperidone, paroxetine, or any of their excipients
  • Known history of drug-induced dystonia
  • Recent history of alcohol or substance abuse
  • Relevant history or presence of any cardiovascular (including myocardial infarct or cardiac arrhythmia), respiratory, neurologic (including seizures), psychiatric, renal, hepatic, gastrointestinal (including surgeries, severe gastrointestinal narrowing, and malabsorption problems), endocrine, hematologic, or immunologic disease
  • History of any cancer, with the exception of basal cell carcinoma
  • At screening, has signs of autonomic dysfunction as indicated by a sustained decrease of >20 mmHg in systolic blood pressure or a decrease of >10 mmHg in diastolic blood pressure after standing for at least 2 minutes that is not associated with an increase of >15 beats per minute (bpm) in heart rate
  • Bradycardia (heart rate <50 bpm) as determined by screening 12-lead ECG
  • A positive test result (or history of) for any of the serology tests (hepatitis B and C, and human immunodeficiency virus) at screening

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
  • Masking: NONE

What is the study measuring?

Primary Outcome Measures

Outcome Measure
To evaluate the effects of a CYP2D6 inhibitor, paroxetine, on the pharmacokinetics of a single dose of orally administered paliperidone ER

Secondary Outcome Measures

Outcome Measure
To evaluate the safety and tolerability of the 3 mg tablet of paliperidone ER administered with and without paroxetine to healthy men

Collaborators and Investigators

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

Sponsor

Johnson & Johnson Pharmaceutical Research & Development, L.L.C.

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

March 1, 2006

Study Completion (ACTUAL)

July 1, 2006

Study Registration Dates

First Submitted

November 13, 2008

First Submitted That Met QC Criteria

November 13, 2008

First Posted (ESTIMATE)

November 14, 2008

Study Record Updates

Last Update Posted (ESTIMATE)

May 19, 2011

Last Update Submitted That Met QC Criteria

May 18, 2011

Last Verified

January 1, 2009

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CR007561

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.

Clinical Trials on Schizophrenia

Clinical Trials on Paliperidone ER

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Uruguay

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

3
Subscribe