A Study to Evaluate the Effect of Single Doses of Drug A (Lamotrigine) and Drug B (Vofopitant) Alone and in Combination on Resting Motor Threshold in Healthy Subjects

Overview

The purpose of this study is to investigate the effect of drug A on its own and when it is given in combination with drug B on markers of brain activity. The study will

1. Assess the effects of drug A and drug B on muscle movement after brain stimulation;

2. Examine how the body handles (absorbs, distributes, breaks down and gets rid of) drug A and drug B when given in combination;

3. Examine the safety of drug A and drug B when given together.

Full Title of Study: “Double Blind, Double-dummy, Randomised, Placebo Controlled Study to Evaluate the Effect of Single Doses of Drug A (Lamotrigine) and Drug B (Vofopitant) Alone and in Combination on Resting Motor Threshold in Healthy Subjects”

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: Randomized
    • Intervention Model: Parallel Assignment
    • Primary Purpose: Treatment
    • Masking: Double (Participant, Investigator)
  • Study Primary Completion Date: June 10, 2010

Interventions

  • Drug: Placebo
    • Single dose of placebo will be provided.
  • Drug: Vofopitant
    • Vofopitant (GR205171) will be provided as 5 milligram single dose capsule administered orally. It will be available as swedish orange, size 0 capsules.
  • Drug: Lamotrigine
    • Lamotrigine will be provided as 25 milligrams or 100 milligrams single dose dispersible tablet administered orally.

Arms, Groups and Cohorts

  • Experimental: Treatment sequence A
    • Subjects on sequence A will receive single dose of vofopitant 10 milligrams capsule in part 1, single doses of lamotrigine 175 milligrams tablet + vofopitant 10 milligrams capsule in session A of part 2 and placebo + vofopitant 10 milligrams capsule in session B of part 2.
  • Experimental: Treatment sequence B
    • Subjects on sequence B will receive single dose of vofopitant 10 milligrams capsule in part 1, single doses of placebo + vofopitant 10 milligrams capsule in session A of part 2 and lamotrigine 175 milligrams tablet + vofopitant 10 milligrams capsule in session B of part 2.
  • Experimental: Treatment sequence C
    • Subjects on sequence C will receive single dose of placebo in part 1, single doses of lamotrigine 175 milligrams tablet + vofopitant 10 milligrams capsule in session A of part 2 and placebo + vofopitant 10 milligrams capsule in session B of part 2.
  • Experimental: Treatment sequence D
    • Subjects on sequence D will receive single dose of placebo in part 1, single doses of placebo + vofopitant 10 milligrams capsule in session A of part 2 and lamotrigine 175 milligrams tablet + vofopitant 10 milligrams capsule in session B of part 2.
  • Experimental: Treatment sequence E
    • Subjects on sequence E will receive single dose of vofopitant 10 milligrams capsule in part 1, single doses of lamotrigine 175 milligrams tablet + vofopitant 10 milligrams capsule in session A of part 2 and placebo + placebo in session B of part 2.
  • Experimental: Treatment sequence F
    • Subjects on sequence F will receive single dose of vofopitant 10 milligrams capsule in part 1, single doses of placebo + placebo in session A of part 2 and lamotrigine 175 milligrams tablet + vofopitant 10 milligrams capsule in session B of part 2.
  • Experimental: Treatment sequence G
    • Subjects on sequence G will receive single dose of placebo in part 1, single doses of lamotrigine 175 milligrams tablet + vofopitant 10 milligrams capsule in session A of part 2 and placebo + placebo in session B of part 2.
  • Experimental: Treatment sequence H
    • Subjects on sequence H will receive single dose of placebo part 1, single doses of placebo + placebo in session A of part 2 and lamotrigine 175 milligrams tablet + vofopitant 10 milligrams capsule in session B of part 2.
  • Experimental: Treatment sequence I
    • Subjects on sequence I will receive single dose of vofopitant 10 milligrams capsule in part 1, single doses of lamotrigine 175 milligrams tablet + placebo in session A of part 2 and placebo + vofopitant 10 milligrams capsule in session B of part 2.
  • Experimental: Treatment sequence J
    • Subjects on sequence J will receive single dose of vofopitant 10 milligrams capsule in part 1, single doses of placebo + vofopitant 10 milligrams capsule in session A of part 2 and lamotrigine 175 milligrams tablet + placebo in session B of part 2.
  • Experimental: Treatment sequence K
    • Subjects on sequence K will receive single dose of placebo in part 1, single doses of lamotrigine 175 milligrams tablet + placebo in session A of part 2 and placebo + vofopitant 10 milligrams capsule in session B of part 2.
  • Experimental: Treatment sequence L
    • Subjects on sequence L will receive single dose of placebo in part 1, single doses of placebo + vofopitant 10 milligrams capsule in session A of part 2 and lamotrigine 175 milligrams tablet + placebo in session B of part 2.
  • Experimental: Treatment sequence M
    • Subjects on sequence M will receive single dose of vofopitant 10 milligrams capsule in part 1, single doses of lamotrigine 175 milligrams tablet + placebo in session A of part 2 and placebo + placebo in session B of part 2.
  • Experimental: Treatment sequence N
    • Subjects on sequence N will receive single dose of vofopitant 10 milligrams capsule in part 1, placebo + placebo in session A of part 2 and lamotrigine 175 milligrams tablet + placebo in session B of part 2.
  • Experimental: Treatment sequence O
    • Subjects on sequence O will receive placebo in part 1, single doses of lamotrigine 175 milligrams tablet + placebo in session A of part 2 and placebo + placebo in session B of part 2.
  • Experimental: Treatment sequence P
    • Subjects on sequence P will receive placebo in part 1, single doses of placebo + placebo in session A of part 2 and lamotrigine 175 milligrams tablet + placebo in session B of part 2.
  • Experimental: Treatment sequence Q
    • Subjects on sequence Q will receive single dose of vofopitant 10 milligrams capsule in part 1, single doses of lamotrigine 175 milligrams tablet + lamotrigine 150 milligrams tablet in session A of part 2 and placebo + placebo in session B of part 2.
  • Experimental: Treatment sequence R
    • Subjects on sequence R will receive single dose of vofopitant 10 milligrams capsule in part 1, single doses of placebo + placebo in session A of part 2 and lamotrigine 175 milligrams tablet + lamotrigine 150 milligrams tablet in session B of part 2.
  • Experimental: Treatment sequence S
    • Subjects on sequence S will receive placebo in part 1, single doses of lamotrigine 175 milligrams tablet + lamotrigine 150 milligrams tablet in session A of part 2 and placebo + placebo in session B of part 2.
  • Experimental: Treatment sequence T
    • Subjects on sequence T will receive placebo in part 1, single doses of placebo + placebo in session A of part 2 and lamotrigine 175 milligrams tablet + lamotrigine 150 milligrams tablet in session B of part 2.

Clinical Trial Outcome Measures

Primary Measures

  • Effect of the study treatments on Resting Motor Thresholds (rMT)
    • Time Frame: Within 24 hours

Secondary Measures

  • The safety and tolerability of the combination of study treatments.
    • Time Frame: Within 24 hours

Participating in This Clinical Trial

Inclusion Criteria

  • Healthy subject
  • Male aged 18-65
  • Greater than 50kg weight
  • BMI 19-29.9 kg/m2

Exclusion Criteria

  • Positive drug/alcohol screen
  • Positive HIV antibody
  • History of drug dependence
  • History of neurological disease
  • Pacemaker
  • Smoker

Gender Eligibility: Male

Minimum Age: 18 Years

Maximum Age: 65 Years

Are Healthy Volunteers Accepted: Accepts Healthy Volunteers

Investigator Details

  • Lead Sponsor
    • GlaxoSmithKline
  • Provider of Information About this Clinical Study
    • Sponsor
  • Overall Official(s)
    • GSK Clinical Trials, Study Director, GlaxoSmithKline

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