Repeat Dose Study of Controlled-Release Paroxetine Tablets and Immediate-Release Paroxetine Tablets in Healthy Japanese Male Subjects

A Steady-state, Two-period Crossover Study to Compare the Pharmacokinetic Profile of Paroxetine After Repeated Daily Dosing of the Controlled-release Paroxetine Tablet (25 mg) With That of the Standard Immediate-release Paroxetine Tablet (20 mg) in Healthy Japanese Male Subjects

The primary purpose of this study is to compare the steady-state pharmacokinetic profile of paroxetine CR (controlled-release) at the dosage of 25mg/day using the proposed final market tablet of CR 25mg in Japan with that of standard paroxetine IR(immediate-release ) at the dosage of 20mg/day using the currently marketed tablet of IR 20mg in Japan.

Study Overview

• Status: Completed
• Conditions: Depressive Disorder
• Intervention / Treatment: Drug: Paroxetine CR and Paroxetine IR

Detailed Description

This study is an open, randomized, repeat dose, two-period crossover design in Japanese healthy male volunteers. This clinical trial is designed primarily to compare the steady-state pharmacokinetic profile of paroxetine CR at the dosage of 25mg /day (25mg once daily for 14 days) using the proposed final market tablet of CR 25mg in Japan with that of paroxetine IR at the dosage of 20mg/day (20mg once daily for 14 days) using the currently marketed IR 20mg tablet in Japan, by the crossover oral repeat dosing manner.

• Study Type: Interventional
• Enrollment (Actual): 26
• Phase: Phase 1

Contacts and Locations

Study Locations

• Japan
  • Tokyo, Japan, 108-8642
    • GSK Investigational Site

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 20 years to 64 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: Male

Description

Inclusion Criteria:

• Healthy Japanese adult males between 20 and 64 years of age inclusive
• BMI 18.50 or higher and < 25.00 kg/m2, and bodyweight 50 kg or higher
• Non-smokers
• AST, ALT, ALP, gamma-GTP and total-bilirubin are below the upper limit of normal range
• QTc(B) interval <450 msec
• Able to attend all visits and complete the study
• Capable of giving written informed consent, which includes compliance with the requirements and restrictions listed in the consent form

Exclusion Criteria:

• Any clinically relevant abnormality on the screening physical examination, vital signs, 12-lead ECG and/or clinical laboratory tests
• Medical history that is not considered as eligible for inclusion in this study by the investigator
• Current or chronic history of liver disease, or known hepatic or biliary abnormalities (with the exception of asymptomatic gallstones)
• History of psychiatric disorder or suicide attempts or behaviours
• History or presence of gastrointestinal, hepatic or renal disease or any other condition known to interfere with the absorption, distribution, metabolism or excretion of drugs
• History of sensitivity to any of the paroxetine formulations, or components thereof
• Positive for urine drug screening
• Participation in another clinical study or post-marketing study in which the subject is or will be exposed to an investigational or a non-investigational product or device
• Participation in a clinical study or post-marketing study with an investigational or a non-investigational product or device within 4 months of preceding the first dose of study medication
• History of drug or other allergy, or idiosyncrasy, excluding a pollen allergy without current symptoms
• History of drug abuse, or current conditions of drug abuse or alcoholism
• History of regular alcohol consumption exceeding, on average, 14 drinks/week (1 drink = 150 mL of wine or 350 mL of beer or 45 mL of 80 proof distilled spirits) within 6 months of screening
• Use of prescription or no-prescription drugs, including vitamins, crude drug, herbal and dietary supplements (including St John's Wort) within 14 days prior to the first dose of study medication
• Unwillingness or inability to follow the procedures outlined in the protocol
• Consumption of grapefruit or grapefruit-containing products from 7 days prior to the first dose of study medication
• Positive for syphilis, HIV antibody and antigen, Hepatitis B surface antigen, Hepatitis C antibody or HTLV-1 antibody
• Donation of blood in excess of 400mL within the previous 4 months or 200mL within the previous 1 month to the first dose of study medication

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Other
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Open label treatment with 2-period crossover design; Group 1: Paroxetine CR 25 mg/day for 14 days / Paroxetine IR 20 mg/day for 14 days. Group 2: Paroxetine IR 20 mg/day for 14 days / Paroxetine CR 25 mg/day for 14 days., PK results will be compared between the Paroxetine CR treatment period and the Paroxetine IR treatment period.	Drug: Paroxetine CR and Paroxetine IR; Randomized, 2-period crossover repeat dosing of Paroxetine CR at 25 mg/day for 14 days and Paroxetine IR at 20 mg/day for 14 days in Japanese healthy male volunteers

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Pharmacokinetic parameters of plasma paroxetine after 14-days repeat dosing of paroxetine CR at 25mg/day or paroxetine IR at 20mg/day	up to 96 hours after dosing on Day 14 of each treatment period of paroxetine CR or paroxetine IR

Secondary Outcome Measures

Outcome Measure	Time Frame
Safety and tolerability in healthy Japanese male volunteers during and after the repeat dosing period of paroxetine CR or paroxetine IR	During the 14-days repeat dosing period and up to 96 hours after the last dose of paroxetine CR or paroxetine IR

Collaborators and Investigators

• Sponsor: GlaxoSmithKline

Publications and helpful links

Helpful Links

• Researchers can use this site to request access to anonymised patient level data and/or supporting documents from clinical studies to conduct further research.

Study record dates

Study Major Dates

• Study Start (Actual): November 5, 2009
• Primary Completion (Actual): February 25, 2010
• Study Completion (Actual): February 25, 2010

Study Registration Dates

• First Submitted: October 22, 2009
• First Submitted That Met QC Criteria: October 22, 2009
• First Posted (Estimate): October 23, 2009

Study Record Updates

• Last Update Posted (Actual): June 19, 2018
• Last Update Submitted That Met QC Criteria: June 18, 2018
• Last Verified: June 1, 2018

More Information

Terms related to this study

• Keywords: paroxetine; safety; pharmacokinetics; tolerance; repeat dose; crossover; controlled-release tablet; immediate-release tablet; steady-state; Japanese healthy male volunteers
• Additional Relevant MeSH Terms: Mental Disorders; Mood Disorders; Depressive Disorder; Physiological Effects of Drugs; Neurotransmitter Agents; Molecular Mechanisms of Pharmacological Action; Enzyme Inhibitors; Psychotropic Drugs; Serotonin Uptake Inhibitors; Neurotransmitter Uptake Inhibitors; Membrane Transport Modulators; Serotonin Agents; Antidepressive Agents; Cytochrome P-450 Enzyme Inhibitors; Antidepressive Agents, Second-Generation; Cytochrome P-450 CYP2D6 Inhibitors; Paroxetine
• Other Study ID Numbers: 112812

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: Yes
• IPD Plan Description: Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.

Study Data/Documents

1. Individual Participant Data Set
   Information identifier: 112812
   Information comments: For additional information about this study please refer to the GSK Clinical Study Register
2. Statistical Analysis Plan
   Information identifier: 112812
   Information comments: For additional information about this study please refer to the GSK Clinical Study Register
3. Dataset Specification
   Information identifier: 112812
   Information comments: For additional information about this study please refer to the GSK Clinical Study Register
4. Annotated Case Report Form
   Information identifier: 112812
   Information comments: For additional information about this study please refer to the GSK Clinical Study Register