CClinicalTrials.gg
CompletedNCT00728897Updated Aug 4, 2017

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

A Phase 1 interventional study of GSK598809 new formulation and GSK598809 old formulation in Substance Dependence, sponsored by GlaxoSmithKline. Completed at 1 site in United Kingdom. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2017-08-04.

Sponsored by GlaxoSmithKline · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
16
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

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.

02

Conditions studied

  • Substance Dependence

Keywords

  • Healthy volunteer
  • relative bioavailability.
03

In context

Substance-Related Disorders

2,124 studies on the registry are indexed under Substance-Related Disorders; 393 are open to participants now.

This study's enrollment of 16 is below the median of 108 across 1,727 interventional studies indexed under Substance-Related Disorders.

Browse Substance-Related Disorders studies →

Lead sponsor

GlaxoSmithKline is the lead sponsor of 3,562 studies on the registry; 117 are open to participants now.

Of its 258 completed or terminated interventional studies of FDA-regulated products, 232 (90%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • 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.

Exclusion criteria

Exclusion:

  • 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.
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
16 participants (actual)

Study arms

  • Experimental
    Subjects receiving treatment sequence ABC

    Eligible subjects will receive treatment sequence ABC; A= 4x25 milligrams GSK598809 capsule given in fasted state, B= 100 milligrams GSK598809 capsule in given fasted state and C= 100 milligrams GSK598809 capsule given in fed state. The treatment sequence will be followed by at least a 7-day wash-out period between each dose.

    Drug: GSK598809 new formulation · Drug: GSK598809 old formulation

  • Experimental
    Subjects receiving treatment sequence ACB

    Eligible subjects will receive treatment sequence ACB; A= 4x25 milligrams GSK598809 capsule given in fasted state, C= 100 milligrams GSK598809 capsule given in fed state and B= 100 milligrams GSK598809 capsule in given fasted state. The treatment sequence will be followed by at least a 7-day wash-out period between each dose.

    Drug: GSK598809 new formulation · Drug: GSK598809 old formulation

  • Experimental
    Subjects receiving treatment sequence BAC

    Eligible subjects will receive treatment sequence BAC; B= 100 milligrams GSK598809 capsule in given fasted state, A= 4x25 milligrams GSK598809 capsule given in fasted state and C= 100 milligrams GSK598809 capsule given in fed state. The treatment sequence will be followed by at least a 7-day wash-out period between each dose.

    Drug: GSK598809 new formulation · Drug: GSK598809 old formulation

  • Experimental
    Subjects receiving treatment sequence BCA

    Eligible subjects will receive treatment sequence BCA; B= 100 milligrams GSK598809 capsule in given fasted state, C= 100 milligrams GSK598809 capsule given in fed state and A= 4x25 milligrams GSK598809 capsule given in fasted state. The treatment sequence will be followed by at least a 7-day wash-out period between each dose.

    Drug: GSK598809 new formulation · Drug: GSK598809 old formulation

  • Experimental
    Subjects receiving treatment sequence CAB

    Eligible subjects will receive treatment sequence CAB; C= 100 milligrams GSK598809 capsule given in fed state, A= 4x25 milligrams GSK598809 capsule given in fasted state and B= 100 milligrams GSK598809 capsule in given fasted state. The treatment sequence will be followed by at least a 7-day wash-out period between each dose.

    Drug: GSK598809 new formulation · Drug: GSK598809 old formulation

  • Experimental
    Subjects receiving treatment sequence CBA

    Eligible subjects will receive treatment sequence CBA; C= 100 milligrams GSK598809 capsule given in fed state, B= 100 milligrams GSK598809 capsule in given fasted state and A= 4x25 milligrams GSK598809 capsule given in fasted state. The treatment sequence will be followed by at least a 7-day wash-out period between each dose.

    Drug: GSK598809 new formulation · Drug: GSK598809 old formulation

Interventions

  • DrugGSK598809 new formulation

    GSK598809 new formulation will be available as an immediate release capsule with a single dose of 100 milligrams, administered orally with 240 milliliters of water.

  • DrugGSK598809 old formulation

    GSK598809 old formulation will be available as an immediate release capsule with a single dose of 25 milligrams, administered orally with 240 milliliters of water.

06

What researchers measure

Primary outcomes

  1. Blood sampling over a period of 96hrs post GSK598809 dosing in the three dosing periods.

    Time frame: Pre-dose, 0, 0.25, 0.5, 1, 1.5, 2, 4, 6, 8. 10, 12, 16, 24, 48. 72 and 96 hours

Secondary outcomes

  1. 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.

    Time frame: Up to 96 hours

07

Study locations

1 site
  • GSK Investigational Site
    London, SE1 1YR, United Kingdom
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 4, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00728897
Lead sponsor
GlaxoSmithKline
Responsible party
Sponsor
First posted
Aug 6, 2008
Start date
Jul 2, 2008
Primary completion
Jul 29, 2008
Completion
Jul 29, 2008
Last update
Aug 4, 2017

Study contacts

GSK Clinical Trials
study director · GlaxoSmithKline
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Aug 2017. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion