A Polysomnographic Study Of Single-Dose Gabapentin In Transient Insomnia

Overview[ - collapse ][ - ]

Purpose The purpose of this study is to assess the effect of gabapentin on polysomnographic assessments in transient insomnia induced by a sleep phase advance.
ConditionTransient Insomnia
InterventionDrug: Gabapentin
Drug: Gabapentin
Drug: Placebo
PhasePhase 3
SponsorPfizer
Responsible PartyPfizer
ClinicalTrials.gov IdentifierNCT00674752
First ReceivedMay 6, 2008
Last UpdatedApril 22, 2011
Last verifiedApril 2011

Tracking Information[ + expand ][ + ]

First Received DateMay 6, 2008
Last Updated DateApril 22, 2011
Start DateMarch 2006
Estimated Primary Completion DateAugust 2006
Current Primary Outcome MeasuresWake after sleep onset as measured by polysomnography (PSG) [Time Frame: Hour +8] [Designated as safety issue: No]
Current Secondary Outcome Measures
  • PSG Latency to Persistent Sleep [Time Frame: Hour +8] [Designated as safety issue: No]
  • PSG Wake Time During Sleep [Time Frame: Hour +8] [Designated as safety issue: No]
  • PSG WASO [Time Frame: Hour +8] [Designated as safety issue: No]
  • PSG Sleep Onset Latency [Time Frame: Hour +8] [Designated as safety issue: No]
  • Vital signs [Time Frame: Hour +8] [Designated as safety issue: No]
  • Karolinska Sleep Diary-Sleep (KSD) Quality Index [Time Frame: Hour +8] [Designated as safety issue: No]
  • KSD individual scores [Time Frame: Hour +8] [Designated as safety issue: No]
  • PSG NA [Time Frame: Hour +8] [Designated as safety issue: No]
  • Adverse events [Time Frame: Hour +13] [Designated as safety issue: Yes]
  • PSG Total wake time plus Stage 1 sleep [Time Frame: Hour +8] [Designated as safety issue: No]
  • PSG TST [Time Frame: Hour +8] [Designated as safety issue: No]
  • PSG Sleep Efficiency [Time Frame: Hour +8] [Designated as safety issue: No]
  • PSG Percent of Stages 1, 2, 3, 4 and REM sleep [Time Frame: Hour +8] [Designated as safety issue: No]
  • PSG Percent slow wave sleep (Stages 3&4 combined) [Time Frame: Hour +8] [Designated as safety issue: No]
  • subjective Sleep Latency [Time Frame: Hour +8] [Designated as safety issue: No]
  • subjective Number of Awakenings (NA) [Time Frame: Hour +8] [Designated as safety issue: No]
  • subjective Wake After Sleep Onset (WASO) [Time Frame: Hour +8] [Designated as safety issue: No]
  • subjective Total Sleep Time (TST) [Time Frame: Hour +8] [Designated as safety issue: No]
  • subjective Assessment of Sleep Refreshment [Time Frame: Hour +8] [Designated as safety issue: No]
  • subjective Assessment of Sleep Quality [Time Frame: Hour +8] [Designated as safety issue: No]

Descriptive Information[ + expand ][ + ]

Brief TitleA Polysomnographic Study Of Single-Dose Gabapentin In Transient Insomnia
Official TitleA Randomized, Double-Blind, Single-Dose, Placebo-Controlled, Multicenter, Polysomnographic Study Of Gabapentin 250 mg And 500 mg In Transient Insomnia Induced By A Sleep Phase Advance
Brief Summary
The purpose of this study is to assess the effect of gabapentin on polysomnographic
assessments in transient insomnia induced by a sleep phase advance.
Detailed DescriptionNot Provided
Study TypeInterventional
Study PhasePhase 3
Study DesignAllocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator, Outcomes Assessor), Primary Purpose: Treatment
ConditionTransient Insomnia
InterventionDrug: Gabapentin
Gabapentin 250 mg oral capsule 30 minutes prior to bedtime
Drug: Gabapentin
Gabapentin 500 mg oral capsule 30 minutes prior to bedtime
Drug: Placebo
Matched placebo oral capsule 30 minutes prior to bedtime
Study Arm (s)
  • Experimental: A
  • Experimental: B
  • Placebo Comparator: C

Recruitment Information[ + expand ][ + ]

Recruitment StatusCompleted
Estimated Enrollment377
Estimated Completion DateAugust 2006
Estimated Primary Completion DateNot Provided
Eligibility Criteria
Inclusion Criteria:

- Aged >/= 18 years who reported occasional sleeplessness in the month prior to
screening

- Females of child-bearing potential using medically-acceptable method of birth control
>/= 1 month prior to screening

Exclusion Criteria:

- Current or recent history (within 2 years) of sleep disorder (excessive snoring,
obstructive sleep apnea, chronic painful condition)

- Currently taking or expected to take any of the following during the trial:
amphetamines, benzodiazepines, cocaine, marijuana, methaqualone, methadone, opiates,
propoxyphene, barbituates, and phencyclidine
GenderBoth
Ages18 Years
Accepts Healthy VolunteersNo
ContactsNot Provided
Location CountriesUnited States

Administrative Information[ + expand ][ + ]

NCT Number NCT00674752
Other Study ID NumbersA9451157
Has Data Monitoring CommitteeNo
Information Provided ByPfizer
Study SponsorPfizer
CollaboratorsNot Provided
Investigators Study Director: Pfizer CT.gov Call Center Pfizer
Verification DateApril 2011

Locations[ + expand ][ + ]

Pfizer Investigational Site
Miami, Florida, United States, 33143
Pfizer Investigational Site
Atlanta, Georgia, United States, 30342
Pfizer Investigational Site
Overland Park, Kansas, United States, 66212
Pfizer Investigational Site
Cincinnati, Ohio, United States, 45227