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Entecavir

Phase 3

Hepatitis B, Chronic | Small molecule | Infectious Disease |Bristol-Myers Squibb Company|Last Updated: May 2, 2018

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 Trials4
Total Enrollment1,471
FDA Designations
No designations recorded
Clinical Trials (4)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00410202Entecavir Plus Adefovir Combination Therapy Versus Entecavir Monotherapy vs Therapy With Adefovir Plus Lamivudine for Chronic Hepatitis B Infected Subjects With Lamivudine-resistant VirusPHASE3 COMPLETED 629Mar 1, 2008Jul 1, 2012Nov 21, 201367 United States, Australia +16
NCT00395018Antiviral Activity of Entecavir in Patients Receiving Liver Transplant Due to Chronic Hepatitis B Virus InfectionPHASE3 COMPLETED 109Apr 1, 2007Mar 1, 2011May 31, 201232 United States, Argentina +7
NCT00410072Entecavir Plus Tenofovir Combination Therapy Versus Entecavir Monotherapy in Naive Subjects With Chronic Hepatitis BPHASE3 COMPLETED 669Apr 1, 2007Oct 1, 2010Mar 15, 201368 United States, Argentina +11
NCT00423891A Study of Entecavir in Pediatric Patients With Chronic Hepatitis B Virus (HBV)-InfectionPHASE1 COMPLETED 64Jun 30, 2007Sep 4, 2017May 2, 201819 United States, Argentina +6
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Study Endpoints
Primary Endpoints
Percentage of Participants With Hepatitis B Virus (HBV) Deoxyribonucleic Acid (DNA) < 50 IU/mL (Approximately 300 Copies/mL) by Polymerase Chain Reaction (PCR) at Week 48
Week 48

HBV DNA assessments were performed using the Roche COBAS® TaqMan High Pure System (HPS) assay. HBV DNA less than (\<)50 International units per milliliter (IU/mL) = approximately 300 copies/mL. Percentage of participants calculated n/N; n= number of participants with HBV DNA \<50 IU/mL; N = number of participants analyzed.

Percentage of Participants With HBV Deoxyribonucleic Acid (DNA) => 50 IU/mL by Polymerase Chain Reaction (PCR) at Week 72
At 72 weeks

HBV DNA assessments were performed using the Roche COBAS® TaqMan High+Pure system (HPS) assay. HBV DNA =\> 50 IU/mL = approximately =\> 300 copies/mL.

Number of Participants With HBV DNA by PCR >= 50 IU/mL Through Week 72
At baseline (day 1), week 12, 24, 36, 48, 60, and 72

HBV DNA assessments were performed using the Roche COBAS® TaqMan High+Pure system (HPS) assay. HBV DNA =\> 50 IU/mL = approximately =\> 300 copies/mL.

Percentage of Participants Who Achieved Hepatitis B Virus DNA (HBV DNA) Levels <50 IU/mL by Polymerase Chain Reaction (PCR) at Week 96
At Week 96

HBV DNA levels \<50 IU/mL=approximately 300 copies/mL. Analyses of binary efficacy endpoint during on-treatment period focused on participants who received treatment and used the analysis of noncompleter=failure (NC=F). All participants who received treatment were included in the denominator, and participants with missing measurements were counted as nonresponders for the specific endpoints.

Number of Participants With Serious Adverse Events (SAE) and Discontinuations Due to Adverse Events (AEs) - On Treatment
Day 1 to Week 120

AE=any new unfavorable symptom, sign, or disease or worsening of a preexisting condition that may not have a causal relationship with treatment. SAE=a medical event that at any dose results in death, persistent or significant disability/incapacity, or drug dependency/abuse; is life-threatening, an important medical event, or a congenital anomaly/birth defect; or requires or prolongs hospitalization. Medical Dictionary for Regulatory Activities (MedDRA) version 16.0 was used.

Secondary Endpoints
Percentage of Participants With HBV DNA < 50 IU/mL (Approximately 300 Copies/mL) by PCR at Week 96
Week 96
Percentage of Participants Who Achieve HBV DNA < Lower Limit of Quantitation (LOQ = 29 IU/mL [Approximately 169 Copies/mL]) at Week 48
Week 48
Percentage of Participants Who Achieve HBV DNA < Lower Limit of Quantitation (LOQ = 29 IU/mL [Approximately 169 Copies/mL]) at Week 96
Week 96
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
EntecavirACTIVE_COMPARATORWith the option of adding tenofovir at week 48. (This does not apply to Korea)
Adefovir + LamivudineACTIVE_COMPARATOR -
Entecavir + AdefovirACTIVE_COMPARATOR -
TDF 0.5 mgEXPERIMENTALTDF=tenofovir
ETV 0.5 mg +TDF 300 mgEXPERIMENTALETV=entecavir; TDF=tenofovir
Arm 1: EntecavirEXPERIMENTAL -
Interventions
NameTypeDescription
EntecavirDRUGTablets, Oral, 1mg, once daily, 100 weeks
TenofovirDRUGTablets, Oral, 300 mg, once daily
AdefovirDRUGTablets, Oral, 10mg, once daily, 100 weeks
LamivudineDRUGTablets, Oral, 100mg, once daily, 100 weeks
Entecavir + TenofovirDRUGTablets, Oral, ETV = 0.5 mg + TFV = 300 mg, once daily, 100 weeks
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Eligibility Criteria
Age Range16 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites67

Inclusion Criteria: * Evidence of lamivudine (LVD) resistance * Subjects must have a history of previous LVD treatment at screening, and must have evidence of at least 1 LVD resistance substitution (valine, isoleucine, or serine) at reverse transcriptase codon 204 (M204V/I/S) * Nucleoside- and nucl...

Countries:United StatesAustraliaBrazilCanadaGreeceHong KongIndiaIndonesiaItalyMalaysiaPhilippinesPolandRussiaSingaporeSouth KoreaTaiwanThailandTurkey (Türkiye)ArgentinaFranceSpainMexicoSouth AfricaBelgiumUnited Kingdom
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