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GR205171

Phase 2

Sleep Initiation and Maintenance Disorders | Small molecule | Other |GSK plc|Last Updated: Jul 11, 2017

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedACTIVE_CONTROLLEDBiomarker
Total Trials1
Total Enrollment51
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00606697A Study With GW597599 And GR205171: Potential New Drugs For The Treatment Of Primary InsomniaPHASE2 COMPLETED 51Dec 19, 2007May 7, 2008Jul 11, 201710 Germany
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Study Endpoints
Primary Endpoints
Total Sleep Time (TST) from PSG recording
Night 1 and Night 2 of every treatment period (Up to Day 63)

TST was defined as the total amount of time (measured in minutes) that was actually spent sleeping the previous night as recorded daily in the participant's sleep diary. The score was derived by a central polysomnography (PSG) reader and was analyzed as the mean of the PSG TST recordings obtained on two consecutive nights. If only one assessment was present for a particular PSG session, the score from that one assessment was used.

Latency to Persistent Sleep (LPS) from PSG recording
Night 1 and Night 2 of every treatment period (Up to Day 63)

LPS was defined as the amount of time measured in minutes it takes to fall asleep as the point at which 10 minutes of uninterrupted sleep has begun as determined based on PSG objective assessments of sleep disturbance. PSG recording was performed. The score was derived by a central polysomnography reader and was analyzed as the mean of the PSG TST recordings obtained on two consecutive nights. If only one assessment was present for a particular PSG session, the score from that one assessment was used.

Wake time after sleep onset (WASO1) from PSG recording
Night 1 and Night 2 of every treatment period (Up to Day 63)

WASO was the time in minutes scored as wake between the onset of persistent sleep and lights on, where the onset of persistent sleep was the beginning of the first continuous 20 epochs (10 minute) scored as non-wake. Mean values were calculated based on 2 treatment PSG nights. The score was derived by a central polysomnography reader and was analyzed as the mean of the PSG TST recordings obtained on two consecutive nights. If only one assessment was present for a particular PSG session, the score from that one assessment was used.

Secondary Endpoints
PSG measures of sleep continuity: wake during sleep (WDS)
Night 1 and Night 2 of every treatment period (Up to Day 63)
PSG measures of sleep continuity: wake after sleep (WAS)
Night 1 and Night 2 of every treatment period (Up to Day 63)
PSG measures of sleep continuity: number of awakenings after sleep onset 1
Night 1 and Night 2 of every treatment period (Up to Day 63)
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Study Design & Arms
AllocationRANDOMIZED
ModelCROSSOVER
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Overall studyACTIVE_COMPARATORMale and female subjects, 18-64 years of age (inclusive), with a primary diagnosis of primary insomnia
Interventions
NameTypeDescription
GR205171DRUG10 milligrams (mg)
GW597599DRUG15 mg
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Eligibility Criteria
Age Range18 Years — 64 Years
SexALL
Healthy VolunteersNo
Study Sites10

Inclusion Criteria: * The subject must be able to read and understand the informed consent form and provide written informed consent, indicating the subjects understanding of the purpose of the study and willingness to comply with all study procedures described in the protocol, including all sleep-...

Countries:Germany
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