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SB497115

Phase 2

Hepatitis C, Chronic | Small molecule | Hematology |GSK plc|Last Updated: Jun 4, 2012

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
RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment75
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00110799SB497115 (Oral Thrombopoietin Receptor Agonist) Versus Placebo In Adults With Thrombocytopenia Due To Hepatitis CPHASE2 COMPLETED 75Apr 1, 2005Nov 1, 2006Jun 4, 201230 United States, France +3
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Study Endpoints
Primary Endpoints
Treatment response, assessed by the proportion of subjects with a shift from baseline platelet count (20, 000 to <70,000µL) to =100,000/µL after 4 weeks of study treatment.
4 weeks
Secondary Endpoints
Mean increase in platelet counts and markers of thrombopoiesis. Safety and tolerability, population PK, pharmacodynamics. Effect of antiviral outcome measures during and after therapy.
4 weeks
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Arm BACTIVE_COMPARATORSB-497115-GR 30mg administered orally daily for 12 weeks beginning 4 weeks prior to initiating 8 weeks of antiviral therapy and for 8 weeks during weekly antiviral therapy.
Arm CACTIVE_COMPARATORSB-497115-GR 50mg administered orally daily for 12 weeks beginning 4 weeks prior to initiating 8 weeks of antiviral therapy and for 8 weeks during weekly antiviral therapy.
Arm DACTIVE_COMPARATORSB-497115-GR 75mg administered orally daily for 12 weeks beginning 4 weeks prior to initiating 8 weeks of antiviral therapy and for 8 weeks during weekly antiviral therapy.
Arm APLACEBO_COMPARATORPlacebo administered orally daily for 12 weeks beginning 4 weeks prior to initiating 8 weeks of antiviral therapy and for 8 weeks during weekly antiviral therapy.
Interventions
NameTypeDescription
SB497115DRUGApproximately 160 subjects will be randomized equally to one of four treatment groups of approximately 40 subjects (A-D). Subjects will receive oral tablets of SB-497115-GR at 30mg, 50 mg, 75 mg or placebo administered once daily for a total of 12 weeks beginning 4 weeks prior to initiating 8 weeks of antiviral therapy and for 8 weeks during weekly antiviral therapy.
PlaceboOTHERPlacebo administered orally daily for 12 weeks beginning 4 weeks prior to initiating 8 weeks of antiviral therapy and for 8 weeks during weekly antiviral therapy.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites30

Inclusion criteria: * Chronic low platelet count between 20,000 and \<70,000/µL. * Prior liver biopsy indicating chronic hepatitis within the previous 5 years or radiographic evidence of cirrhosis and / or endoscopic evidence of non-bleeding esophageal or gastric varices. Exclusion criteria: * Hi...

Countries:United StatesFranceGermanyPuerto RicoUnited Kingdom
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