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Single Ascending Dose Cohorts GS-9620

Phase 1

Hepatitis B | Small molecule | Infectious Disease |Gilead Sciences, Inc.|Last Updated: Dec 20, 2013

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-BlindCONTROLLEDDMCBiomarker
Total Trials2
Total Enrollment100
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT01590641A Study Evaluating GS-9620 in Treatment Naive Subjects With Chronic Hepatitis BPHASE1 COMPLETED 49Apr 1, 2012Oct 1, 2013Nov 14, 201323 United States, Australia +3
NCT01590654A Study Evaluating GS-9620 in Virologically Suppressed Subjects With Chronic Hepatitis B Virus InfectionPHASE1 COMPLETED 51Apr 1, 2012Dec 1, 2013Dec 20, 201320 United States, Australia +3
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Study Endpoints
Primary Endpoints
Assessment of adverse events in single and multiple oral doses of GS-9620
Periodically Through Week 25

Safety will be assessed during the study through the reporting of adverse events, by clinical laboratory tests, physical examinations including vital signs and ECGs at various time points during the study, and by documentation of concomitant medications throughout the study.

Secondary Endpoints
Assessment of plasma drug concentrations of GS-9620 using non-compartmental methods
Day 1 and Day 8
Measurement of pharmacodynamic markers (cytokines and interferon-stimulated genes [ISGs])
Up to Day 15
Reduction of hepatitis B (HBV) viral load from baseline
Up to Day 15 and Follow-Up
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Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
0.3mg GS-9620EXPERIMENTAL -
1mg GS-9620EXPERIMENTAL -
2mg GS-9620EXPERIMENTAL -
4mg GS-9620EXPERIMENTAL -
0.3mg GS-9620 QW x 2 dosesEXPERIMENTAL -
1mg GS-9620 QW x 2 dosesEXPERIMENTAL -
2mg GS-9620 QW x 2 dosesEXPERIMENTAL -
4mg GS-9620 QW x 2 dosesEXPERIMENTAL -
Interventions
NameTypeDescription
Single Ascending Dose (SAD) Cohorts GS-9620DRUGThis study will enroll cohorts of 6 eligible, unique subjects per cohort, randomized to either active drug or placebo (5:1) within each cohort. Subjects in Single Ascending Dose (SAD) Cohorts will receive a single dose of GS-9620.
Multiple Ascending Dose (MAD) CohortsDRUGThis study will enroll cohorts of 6 eligible, unique subjects per cohort, randomized to either active drug or placebo (5:1) within each cohort. Subjects in Multiple Ascending Dose (MAD) Cohorts will receive GS-9620 once weekly for two weeks (QW x 2 doses)
Multiple Ascending Dose (MAD) Cohorts GS-9620DRUGThis study will enroll cohorts of 6 eligible, unique subjects per cohort, randomized to either active drug or placebo (5:1) within each cohort. Subjects in Multiple Ascending Dose (MAD) Cohorts will receive GS-9620 once weekly for two weeks (QW x 2 doses).
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Eligibility Criteria
Age Range18 Years — 65 Years
SexALL
Healthy VolunteersNo
Study Sites23

Inclusion Criteria: * Chronic HBV infection ≥ 6 months * HBsAg ≥ 250 IU/mL * HBV treatment naïve * Absence of extensive bridging fibrosis (Metavir 3 or greater) or cirrhosis * Creatinine clearance ≥ 70 mL/min Exclusion Criteria: * Co-infection with hepatitis C virus (HCV), hepatitis D virus (HDV)...

Countries:United StatesAustraliaCanadaNew ZealandSouth Korea
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