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A Healthy Volunteer Study to Investigate the Relative Bioavailability of Two Forms of GSK598809 Capsules.

This study has been completed.
Information provided by (Responsible Party):
GlaxoSmithKline Identifier:
First received: August 4, 2008
Last updated: March 15, 2012
Last verified: February 2011
Study to compare PK of a new 100mg capsule with four 25mg capsules. This is required because we plan to have only single capsules administered in the later phase clinical trials but we have not had a 100mg strength before. As this is a new previously untested strength we need to ensure that the PK is similar to that achieved using 4 x 25mg. The study will also assess the effect of high fat food on the PK of the 100mg capsule. The study is planned to consist of a single part , with three dosing periods, periods 1-3 consisting of 16 subjects. There will be a week wash out between each dose. In the three dosing periods subjects will either received 4x25 mg GSK598809 capsule in a fasted state, 100mg capsule in a fasted state or 100mg GSK598809 capsule in a fed state. Subjects will return to the centre for follow-up 7-14 days after the final dose. It is expected that the total duration of the study should be approximately eight weeks.

Condition Intervention Phase
Substance Dependence Drug: GSK598809 Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: An Open Label, Randomised, Single Dose, Three-way Crossover Study to Investigate the Relative Bioavailability of a 100mg Capsule Compared to Four 25mg GSK598809 Capsules and the Effect of Food on the Pharmacokinetics of the 100mg Capsule in Healthy Male and Female Volunteers.

Further study details as provided by GlaxoSmithKline:

Primary Outcome Measures:
  • Blood sampling over a period of 96hrs post GSK598809 dosing in the three dosing periods.

Secondary Outcome Measures:
  • Safety and Tolerability: cardiovascular variables, vital signs, clinical labs, movement scales, prolactin, GH and TSH levels over 96 hours post dosing. Continuous adverse event monitoring from dosing until study conclusions.

Enrollment: 16
Study Start Date: July 2008
Study Completion Date: July 2008
Primary Completion Date: July 2008 (Final data collection date for primary outcome measure)

Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes


  • Healthy as determined by responsible physician.
  • Male or female between 18 to 65 years old.
  • Females of non-child bearing potential and females of child-bearing potential that agree to use appropriate method of contraception for appropriate amount of time.
  • Males that agree to use appropriate method of contraception for appropriate amount of time.
  • Neither too fat nor too thin.
  • Capable of giving written informed consent and being compliant with requirements within the informed consent.


  • Any current medical or psychiatric illness.
  • Any history of chronic medical or psychiatric illnesses.
  • Previous or current alcohol or drug abuse/dependence including nicotine.
  • Female subjects must not be breastfeeding or been breastfeeding for a month.
  • Serum prolactin exceeding normal range.
  • Personal or family history of prolonged QTc syndrome.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00728897

United Kingdom
GSK Investigational Site
London, United Kingdom, SE1 1YR
Sponsors and Collaborators
Study Director: GSK Clinical Trials GlaxoSmithKline
  More Information

Responsible Party: GlaxoSmithKline Identifier: NCT00728897     History of Changes
Other Study ID Numbers: DAN111283
Study First Received: August 4, 2008
Last Updated: March 15, 2012

Keywords provided by GlaxoSmithKline:
Healthy volunteer
relative bioavailability.

Additional relevant MeSH terms:
Substance-Related Disorders
Chemically-Induced Disorders
Mental Disorders processed this record on July 19, 2017