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ZOSTAVAX

Phase 3

Herpes Zoster | Monoclonal antibody | Infectious Disease |Merck & Company, Inc.|Last Updated: Jan 9, 2019

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-BlindACTIVE_CONTROLLEDBiomarker
Total Trials3
Total Enrollment1,999
FDA Designations
No designations recorded
Clinical Trials (3)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT02519855Study to Evaluate Immunogenicity, Safety, and Tolerability of ZOSTAVAX™ Vaccine (Zoster Vaccine Live, V211) Administered Concomitantly Versus Nonconcomitantly With Quadrivalent Influenza Virus Vaccine (Inactivated) in Participants ≥50 Years of Age (V211-062)PHASE3 COMPLETED 882Sep 11, 2015Jan 26, 2016Oct 30, 2018 -
NCT01391546Immunogenicity and Safety Study of ZOSTAVAX Administered by Intramuscular or Subcutaneous Route to Participants Aged From 50 Years Old (V211-045)PHASE3 COMPLETED 354Jun 20, 2011Oct 15, 2012Jan 9, 2019 -
NCT00231816A Study of an Investigational Zoster Vaccine in Subjects With a History of Varicella (Chickenpox) Given Concomitantly With Another Vaccine (V211-011)PHASE3 COMPLETED 763Sep 1, 2005Mar 1, 2006Sep 21, 2015 -
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Study Endpoints
Primary Endpoints
Geometric Mean Titer (GMT) of Varicella-zoster Virus (VZV) Glycoprotein Enzyme-linked Immunosorbent Assay (gpELISA) Antibody
Baseline and 4 weeks after ZOSTAVAX™ vaccination (Week 4 for Concomitant group and Week 8 for Nonconcomitant group)

Anti-VZV antibodies were determined using a Glycoprotein Enzyme-linked Immunosorbent Assay. Baseline was Day 1 for the Concomitant group and Week 4 for the Nonconcomitant group.

Geometric Mean Fold Rise From Baseline in VZV gpELISA Antibody Titers
Baseline and 4 weeks after ZOSTAVAX™ vaccination (Week 4 for Concomitant group and Week 8 for Nonconcomitant group)

Anti-VZV antibodies were determined using a Glycoprotein Enzyme-linked Immunosorbent Assay. Baseline was Day 1 for the Concomitant group and Week 4 for the Nonconcomitant group.

Geometric Mean Titers of H1N1-specific Influenza Virus Antibody
Baseline and 4 weeks after Influenza vaccination (Week 4)

Antibodies to H1N1-specific influenza virus hemagglutinin were measured using a Hemagglutinin Inhibition (HAI) assay. Antibody titers are the reciprocal of the highest dilution of serum that completely inhibited hemagglutinin.

Geometric Mean Titers of H3N2-specific Influenza Virus Antibody
Baseline and 4 weeks after Influenza vaccination (Week 4)

Antibodies to H3N2-specific influenza virus hemagglutinin were measured using a Hemagglutinin Inhibition (HAI) assay. Antibody titers are the reciprocal of the highest dilution of serum that completely inhibited hemagglutinin.

Geometric Mean Titers of B-Yamagata-specific Influenza Virus Antibody
Baseline and 4 weeks after Influenza vaccination (Week 4)

Antibodies to B-Yamagata-specific influenza virus hemagglutinin were measured using a Hemagglutinin Inhibition (HAI) assay. Antibody titers are the reciprocal of the highest dilution of serum that completely inhibited hemagglutinin.

Geometric Mean Titers of B-Victoria-specific Influenza Virus Antibody
Baseline and 4 weeks after Influenza vaccination (Week 4)

Antibodies to B-Victoria-specific influenza virus hemagglutinin were measured using a Hemagglutinin Inhibition (HAI) assay. Antibody titers are the reciprocal of the highest dilution of serum that completely inhibited hemagglutinin.

Geometric Mean Titre (GMT) of Varicella Zoster Virus (VZV) Antibodies 4 Weeks Post-vaccination
4 week post-vaccination

Blood samples taken at 4 weeks post vaccination to determine the geometric mean titre (GMT) of VZV antibodies via Glycoprotein Enzyme Linked Immunosorbent Assay (gpELISA).

Geometric Mean Fold Rise (GMFR) in VZV Antibody Titre: IM Route
Pre-vaccination (Day 0) and 4 week post-vaccination

Blood sample taken at predose (Day 0) and 4 weeks post vaccination to determine the geometric mean titre (GMT) of VZV antibodies via gpELISA. The GMFR was calculated as GMT Post-dose/GMT Pre-vaccination

Varicella-zoster Virus (VZV) Glycoprotein Enzyme-linked Immunosorbent Assay (gpELISA) Antibody Responses
4 weeks

The Geometric mean titer (GMT) of the VZV glycoprotein enzyme-linked immunosorbent assay (gpELISA) antibody responses at Week 4 postvaccination in participants who received ZOSTAVAX™ concomitantly with influenza vaccine was compared to that in subjects who received influenza vaccine and ZOSTAVAX™ nonconcomitantly.

Secondary Endpoints
Geometric Mean Fold Rise (GMFR) in VZV Antibody Titre: SC Route
Pre-vaccination (Day 0) and 4 week post-vaccination
Geometric Mean Count (GMCs) of VZV Interferon Gamma ((IFN-γ) Enzyme-Linked ImmunoSpot (ELISPOT) Antibodies
4 week post-vaccination
Geometric Mean Fold Rise (GMFR) of IFN-γ ELISPOT Antibodies
Pre-vaccination (Day 0) and 4 week post-vaccination
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
Concomitant VaccinationEXPERIMENTALZOSTAVAX™ concomitantly with influenza vaccine on Day 1, placebo to ZOSTAVAX™ at Week 4
Nonconcomitant VaccinationEXPERIMENTALInfluenza vaccine and placebo to ZOSTAVAX™ on Day 1, ZOSTAVAX™ at Week 4
ZOSTAVAX intramuscular (IM) routeEXPERIMENTALSingle dose of 0.65 mL via IM injection
ZOSTAVAX subcutaneous (SC) routeACTIVE_COMPARATORSingle dose of 0.65 mL via SC injection
ConcomitantEXPERIMENTALZostavax concomitantly with influenza vaccine on Day 1, placebo at week 4
NonconcomitantEXPERIMENTALInfluenza vaccine and Zostavax placebo on Day 1, Zostavax at week 4
Interventions
NameTypeDescription
ZOSTAVAX™BIOLOGICALA single blinded administration of 0.65 mL subcutaneous injection on Day 1 (concomitant) or at Week 4 (nonconcomitant)
Placebo to ZOSTAVAX™BIOLOGICALA single blinded administration of 0.65 mL subcutaneous injection on Day 1 (nonconcomitant) or at Week 4 (concomitant)
Influenza VaccineBIOLOGICALA single open-label administration of 0.5 mL intramuscular injection on Day 1
ZOSTAVAXBIOLOGICAL1 dose 0.65 mL
ZOSTAVAX™ (concomitant)BIOLOGICALa single administration of 0.65 mL subcutaneous injection of zoster vaccine live on Day 1 and placebo at Week 4
Comparator: Influenza VaccineBIOLOGICALa single administration of 0.5 mL intramuscular injection of influenza vaccine (inactivated) at Day 1
ZOSTAVAX™ (Nonconcomitant)BIOLOGICALPlacebo injection on Day 1 and a single administration of 0.65 mL subcutaneous injection of zoster vaccine live at Week 4
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Eligibility Criteria
Age Range50 Years — N/A
SexALL
Healthy VolunteersYes

Inclusion Criteria: * Has history of varicella or residence in a VZV-endemic area for ≥30 years * Is male, female not of reproductive potential, or female of reproductive potential and has a negative pregnancy test and agrees to avoid becoming pregnant throughout the study Exclusion Criteria: * H...

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