search
Back to results

Safety, Tolerability, and Immunogenicity of the Human Cytomegalovirus Vaccine (V160) in Healthy Adults (V160-001)

Primary Purpose

Cytomegalovirus Infections

Status
Completed
Phase
Phase 1
Locations
Study Type
Interventional
Intervention
V160 Low Dose IM
V160 Medium Dose IM
V160 High Dose IM
V160 Medium Dose plus Merck Aluminum Phosphate Adjuvant (MAPA) 225 µg /dose IM
V160 High Dose plus MAPA 225 µg /dose IM
V160 Maximum Dose IM
Placebo IM
V160 Medium Dose ID
Placebo ID
Sponsored by
Merck Sharp & Dohme LLC
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional prevention trial for Cytomegalovirus Infections

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria:

  • Healthy based on medical history and physical examination
  • Serologically confirmed to be HCMV seronegative or HCMV seropositive
  • Agrees to avoid unusual, unaccustomed strenuous, vigorous physical exercise/activity from 72 hours before through 72 hours after each dose of study vaccine
  • Body weight ≥110 lbs (50 kg) and body mass index (BMI) of 19 to 32 kg/m^2
  • If of reproductive potential, agrees to the following during the study and for 4 weeks after the last dose of study vaccine: 1) practice abstinence from heterosexual activity, or 2) use or have their partner use 2 allowable methods of birth control during heterosexual activity

Exclusion Criteria:

  • Has previously received any cytomegalovirus vaccine
  • Has history of allergic reaction or anaphylactic reaction to any vaccine component that required medical intervention
  • Has history of any severe allergic reaction that required medical intervention
  • Is pregnant or breastfeeding or expecting to conceive from 2 weeks before the study through 1 month after the last dose of study vaccine
  • Plans to donate eggs or sperm from study start through 1 month after the last dose of study drug
  • Has impairment of immunologic function including, but not limited to autoimmune disease, splenectomy, or human immunodeficiency virus acquired immunodeficiency syndrome (HIV/AIDS)
  • Received systemic corticosteroids for ≥14 consecutive days and has not completed treatment within 30 days of study start
  • Received immunosuppressive therapy including, but not limited to rapamycin and equivalents, tacrolimus, FK-506, fujimycin, or other therapies used for solid organ/cell transplant, radiation therapy, immunosuppressive/cytotoxic chemotherapy, or other therapy known to interfere with the immune response within 1 year of study start
  • Has a condition in which repeated venipuncture or injections pose more than minimal risk, such as hemophilia, thrombocytopenia or other severe coagulation disorders, or significantly impaired venous access
  • Has a condition that requires active medical intervention or monitoring such as diabetes mellitus, autoimmune disease, or a clinically significant chronic medical condition that is considered progressive
  • Has history within the past 5 years or current drug or alcohol abuse
  • Has major psychiatric illness
  • Is legally or mentally incapacitated
  • Has participated in another clinical study in the past 4 weeks, or plans during the present study to participate in a treatment-based study or a study in which an invasive procedure is performed
  • Has received valganciclovir, ganciclovir, valacyclovir, foscarnet, or cidofovir from 4 weeks prior to 1 month following each V160 vaccination

Sites / Locations

    Arms of the Study

    Arm 1

    Arm 2

    Arm 3

    Arm 4

    Arm 5

    Arm 6

    Arm 7

    Arm 8

    Arm 9

    Arm 10

    Arm 11

    Arm 12

    Arm 13

    Arm 14

    Arm 15

    Arm 16

    Arm 17

    Arm Type

    Experimental

    Experimental

    Experimental

    Experimental

    Experimental

    Experimental

    Experimental

    Experimental

    Experimental

    Experimental

    Experimental

    Placebo Comparator

    Placebo Comparator

    Experimental

    Experimental

    Placebo Comparator

    Placebo Comparator

    Arm Label

    HCMV seropositive (+) V160 Low Dose Intramuscular (IM)

    HCMV seronegative (-) V160 Low Dose IM

    HCMV+ V160 Medium Dose IM

    HCMV- V160 Medium Dose IM

    HCMV+ V160 High Dose IM

    HCMV- V160 Medium Dose plus MAPA 225 µg IM

    HCMV- V160 High Dose IM

    HCMV+ V160 High Dose plus MAPA 225 µg IM

    HCMV+ V160 Maximum Dose IM

    HCMV- V160 High Dose plus MAPA 225 µg IM

    HCMV- V160 Maximum Dose IM

    HCMV+ Placebo IM

    HCMV- Placebo IM

    HCMV+ V160 Medium Dose Intradermal (ID)

    HCMV- V160 Medium Dose ID

    HCMV+ Placebo ID

    HCMV- Placebo ID

    Arm Description

    Participants seropositive for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6

    Participants seronegative for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6

    Participants seropositive for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6

    Participants seronegative for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6

    Participants seropositive for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6

    Participants seronegative for HCMV at Baseline will receive vaccination with V160 plus MAPA adjuvant by IM injection on Day 1, Month 1, and Month 6

    Participants seronegative for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6

    Participants seropositive for HCMV at Baseline will receive vaccination with V160 plus MAPA adjuvant by IM injection on Day 1, Month 1, and Month 6

    Participants seropositive for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6

    Participants seronegative for HCMV at Baseline will receive vaccination with V160 plus MAPA adjuvant by IM injection on Day 1, Month 1, and Month 6

    Participants seronegative for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6

    Participants seropositive for HCMV at Baseline will receive placebo by IM injection on Day 1, Month 1, and Month 6

    Participants seronegative for HCMV at Baseline will receive placebo by IM injection on Day 1, Month 1, and Month 6

    Participants seropositive for HCMV at Baseline will receive V160 vaccination by ID injection on Day 1, Month 1, and Month 6

    Participants seronegative for HCMV at Baseline will receive V160 vaccination by ID injection on Day 1, Month 1, and Month 6

    Participants seropositive for HCMV at Baseline will receive placebo by ID injection on Day 1, Month 1, and Month 6

    Participants seronegative for HCMV at Baseline will receive placebo by ID injection on Day 1, Month 1, and Month 6

    Outcomes

    Primary Outcome Measures

    Percentage of Participants With an Adverse Event (AE)
    An adverse event (AE) is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a medicinal product or protocol specified procedure, whether or not considered related to the medicinal product or protocol - specified procedure. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition that is temporally associated with the use of the Sponsor's product, is also an AE.
    Percentage of Participants With an Injection-site AE
    Injection-site AEs are defined as redness, swelling, and pain/tenderness.
    Percentage of Participants With a Systemic AE
    A Systemic AE includes, but is not exclusive of, the following AEs: fatigue, myalgia, headache and joint pain
    Percentage of Participants With a Serious Adverse Event (SAE)
    A serious adverse event is any adverse event occurring at any dose or during any use of Sponsor's product that does the following: results in death; is life threatening; results in persistent or significant disability/incapacity; results in or prolongs an existing inpatient hospitalization; is a congenital anomaly/birth defect; is a cancer; is associated with an overdose; is another important medical event
    Percentage of Participants With a Serious Vaccine-Related Adverse Event
    A serious adverse event is any adverse event occurring at any dose or during any use of Sponsor's product that does the following: results in death; is life threatening; results in persistent or significant disability/incapacity; results in or prolongs an existing inpatient hospitalization; is a congenital anomaly/birth defect; is a cancer; is associated with an overdose; is another important medical event. A serious vaccine-related adverse event was determined by the investigator to be related to the vaccine.
    Percentage of Participants Who Discontinued Study Treatment Due to an AE
    An AE is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a medicinal product or protocol specified procedure, whether or not considered related to the medicinal product or protocol - specified procedure. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition that is temporally associated with the use of the Sponsor's product, is also an AE.
    Percentage of Participants With Events of Clinical Interest (ECI)
    An event of clinical interest (ECI) is identified as any overdose, elevated liver values meeting threshold criteria (aspartate aminotransferase or alanine aminotransferase ≥3x upper limit of normal (ULN); total bilirubin ≥2x ULN, and, at the same time, alkaline phosphatase <2xULN). Additionally, confirmed, diagnosed autoimmune conditions are considered ECIs.
    Geometric Mean Titer of HCMV-specific Neutralizing Antibody After Vaccination 3
    Serum samples for measuring neutralizing antibodies using the Merck Neutralizing Antibody (NAb) assay were collected at month 7. The LiCor-based near-infrared dye (NIRDye) In-Cell Western (ICW) HCMV microneutralization assay was used to detect and quantify anti-HCMV neutralizing antibodies. The primary hypothesis was that for HCMV-seronegative participants, at least 1 of the vaccination groups receiving V160 formulated with or without adjuvant would exhibit higher HCMV-specific neutralizing antibody titers than the placebo group.

    Secondary Outcome Measures

    Geometric Mean Count of Peripheral Blood Mononuclear Cells Secreting Interferon-Gamma
    In order to evaluate the cellular immune response to the vaccine(s), the HCMV enzyme-linked immunospot (ELISPOT) assay was used to detect interferon gamma (IFN-γ) secreting HCMV-specific cells from peripheral blood mononuclear cells (PBMCs). Results are expressed as the frequency of spot forming cells (SFCs) per million PBMCs (SFC/10^6 PBMCs). Results are presented for the following HCMV proteins: pp65, Immediate early Protein 1 (IE1), Immediate early Protein 2 (IE2), Glycoprotein B (gB), and also for purified HCMV virion stock.
    Geometric Mean Concentration of Interferon-Gamma After Stimulation of Whole Blood Sample With Pooled HCMV Antigen Peptides
    In response to HCMV-specific stimulation of whole blood specimens the whole Blood Cytokine Stimulation (WBStim) assay was used to detect the secretion of interferon gamma (IFN -γ) by an ELISA assay. Results are presented for the following HCMV proteins: pp65, IE1, and gB.
    Geometric Mean Titer of HCMV-specific Neutralizing Antibody After Vaccinations 1 and 2
    Serum samples for measuring neutralizing antibodies using the Merck NAb assay were collected at months 1 and 2. The LiCor-based near-infrared dye (NIRDye) In-Cell Western (ICW) HCMV microneutralization assay was used to detect and quantify anti-HCMV neutralizing antibodies. Values below the lower limit of titer are represented by NA.

    Full Information

    First Posted
    November 11, 2013
    Last Updated
    September 30, 2021
    Sponsor
    Merck Sharp & Dohme LLC
    search

    1. Study Identification

    Unique Protocol Identification Number
    NCT01986010
    Brief Title
    Safety, Tolerability, and Immunogenicity of the Human Cytomegalovirus Vaccine (V160) in Healthy Adults (V160-001)
    Official Title
    A Phase 1 Randomized, Double-Blind, Placebo-Controlled, Dose-Escalation Study to Evaluate the Safety, Tolerability, and Immunogenicity of the Human Cytomegalovirus Vaccine (V160) in Healthy Adults
    Study Type
    Interventional

    2. Study Status

    Record Verification Date
    September 2021
    Overall Recruitment Status
    Completed
    Study Start Date
    November 25, 2013 (Actual)
    Primary Completion Date
    April 19, 2016 (Actual)
    Study Completion Date
    March 14, 2017 (Actual)

    3. Sponsor/Collaborators

    Responsible Party, by Official Title
    Sponsor
    Name of the Sponsor
    Merck Sharp & Dohme LLC

    4. Oversight

    Data Monitoring Committee
    No

    5. Study Description

    Brief Summary
    This study will evaluate the safety, tolerability, and immunogenicity of various doses, formulations, and routes of administration of Human Cytomegalovirus (HCMV) vaccine V160 administered in a 3-dose regimen in healthy adults. The initial treatment arm of HCMV seropositive participants will receive V160 Low Dose without adjuvant by intramuscular injection. Escalation of the V160 dose, inclusion of adjuvant, administration by intradermal injection, and vaccination of HCMV seronegative participants will be performed only after review of safety data of previous treatment arms. The purpose of the study is to identify vaccine formulations associated with optimal safety profile and HCMV-specific immune response for evaluation in subsequent clinical studies of V160.

    6. Conditions and Keywords

    Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
    Cytomegalovirus Infections

    7. Study Design

    Primary Purpose
    Prevention
    Study Phase
    Phase 1
    Interventional Study Model
    Parallel Assignment
    Masking
    ParticipantInvestigatorOutcomes Assessor
    Allocation
    Randomized
    Enrollment
    190 (Actual)

    8. Arms, Groups, and Interventions

    Arm Title
    HCMV seropositive (+) V160 Low Dose Intramuscular (IM)
    Arm Type
    Experimental
    Arm Description
    Participants seropositive for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV seronegative (-) V160 Low Dose IM
    Arm Type
    Experimental
    Arm Description
    Participants seronegative for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV+ V160 Medium Dose IM
    Arm Type
    Experimental
    Arm Description
    Participants seropositive for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV- V160 Medium Dose IM
    Arm Type
    Experimental
    Arm Description
    Participants seronegative for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV+ V160 High Dose IM
    Arm Type
    Experimental
    Arm Description
    Participants seropositive for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV- V160 Medium Dose plus MAPA 225 µg IM
    Arm Type
    Experimental
    Arm Description
    Participants seronegative for HCMV at Baseline will receive vaccination with V160 plus MAPA adjuvant by IM injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV- V160 High Dose IM
    Arm Type
    Experimental
    Arm Description
    Participants seronegative for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV+ V160 High Dose plus MAPA 225 µg IM
    Arm Type
    Experimental
    Arm Description
    Participants seropositive for HCMV at Baseline will receive vaccination with V160 plus MAPA adjuvant by IM injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV+ V160 Maximum Dose IM
    Arm Type
    Experimental
    Arm Description
    Participants seropositive for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV- V160 High Dose plus MAPA 225 µg IM
    Arm Type
    Experimental
    Arm Description
    Participants seronegative for HCMV at Baseline will receive vaccination with V160 plus MAPA adjuvant by IM injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV- V160 Maximum Dose IM
    Arm Type
    Experimental
    Arm Description
    Participants seronegative for HCMV at Baseline will receive V160 vaccination by IM injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV+ Placebo IM
    Arm Type
    Placebo Comparator
    Arm Description
    Participants seropositive for HCMV at Baseline will receive placebo by IM injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV- Placebo IM
    Arm Type
    Placebo Comparator
    Arm Description
    Participants seronegative for HCMV at Baseline will receive placebo by IM injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV+ V160 Medium Dose Intradermal (ID)
    Arm Type
    Experimental
    Arm Description
    Participants seropositive for HCMV at Baseline will receive V160 vaccination by ID injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV- V160 Medium Dose ID
    Arm Type
    Experimental
    Arm Description
    Participants seronegative for HCMV at Baseline will receive V160 vaccination by ID injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV+ Placebo ID
    Arm Type
    Placebo Comparator
    Arm Description
    Participants seropositive for HCMV at Baseline will receive placebo by ID injection on Day 1, Month 1, and Month 6
    Arm Title
    HCMV- Placebo ID
    Arm Type
    Placebo Comparator
    Arm Description
    Participants seronegative for HCMV at Baseline will receive placebo by ID injection on Day 1, Month 1, and Month 6
    Intervention Type
    Biological
    Intervention Name(s)
    V160 Low Dose IM
    Intervention Description
    V160 administered as a 0.75 mL intramuscular injection
    Intervention Type
    Biological
    Intervention Name(s)
    V160 Medium Dose IM
    Intervention Description
    V160 administered as a 0.75 mL intramuscular injection
    Intervention Type
    Biological
    Intervention Name(s)
    V160 High Dose IM
    Intervention Description
    V160 administered as a 0.75 mL intramuscular injection
    Intervention Type
    Biological
    Intervention Name(s)
    V160 Medium Dose plus Merck Aluminum Phosphate Adjuvant (MAPA) 225 µg /dose IM
    Intervention Description
    V160 plus MAPA administered as a 0.75 mL intramuscular injection
    Intervention Type
    Biological
    Intervention Name(s)
    V160 High Dose plus MAPA 225 µg /dose IM
    Intervention Description
    V160 plus MAPA administered as a 0.75 mL intramuscular injection
    Intervention Type
    Biological
    Intervention Name(s)
    V160 Maximum Dose IM
    Intervention Description
    V160 administered as a 0.75 mL intramuscular injection
    Intervention Type
    Other
    Intervention Name(s)
    Placebo IM
    Intervention Description
    Placebo administered as a 0.75 mL intramuscular injection
    Intervention Type
    Biological
    Intervention Name(s)
    V160 Medium Dose ID
    Intervention Description
    V160 administered as a 0.1 mL intradermal injection
    Intervention Type
    Other
    Intervention Name(s)
    Placebo ID
    Intervention Description
    Placebo administered as a 0.1 mL intradermal injection
    Primary Outcome Measure Information:
    Title
    Percentage of Participants With an Adverse Event (AE)
    Description
    An adverse event (AE) is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a medicinal product or protocol specified procedure, whether or not considered related to the medicinal product or protocol - specified procedure. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition that is temporally associated with the use of the Sponsor's product, is also an AE.
    Time Frame
    Up to 2 weeks after vaccination on Day 1, Month 1 and Month 6 (up to Day 15, Week 6 and Week 26)
    Title
    Percentage of Participants With an Injection-site AE
    Description
    Injection-site AEs are defined as redness, swelling, and pain/tenderness.
    Time Frame
    Up to 2 weeks after vaccination on Day 1, Month 1 and Month 6 (up to Day 15, Week 6 and Week 26)
    Title
    Percentage of Participants With a Systemic AE
    Description
    A Systemic AE includes, but is not exclusive of, the following AEs: fatigue, myalgia, headache and joint pain
    Time Frame
    Up to 2 weeks after vaccination on Day 1, Month 1 and Month 6 (up to Day 15, Week 6 and Week 26)
    Title
    Percentage of Participants With a Serious Adverse Event (SAE)
    Description
    A serious adverse event is any adverse event occurring at any dose or during any use of Sponsor's product that does the following: results in death; is life threatening; results in persistent or significant disability/incapacity; results in or prolongs an existing inpatient hospitalization; is a congenital anomaly/birth defect; is a cancer; is associated with an overdose; is another important medical event
    Time Frame
    Up to 2 weeks after vaccination on Day 1, Month 1 and Month 6 (up to Day 15, Week 6 and Week 26)
    Title
    Percentage of Participants With a Serious Vaccine-Related Adverse Event
    Description
    A serious adverse event is any adverse event occurring at any dose or during any use of Sponsor's product that does the following: results in death; is life threatening; results in persistent or significant disability/incapacity; results in or prolongs an existing inpatient hospitalization; is a congenital anomaly/birth defect; is a cancer; is associated with an overdose; is another important medical event. A serious vaccine-related adverse event was determined by the investigator to be related to the vaccine.
    Time Frame
    Up to 2 weeks after vaccination on Day 1, Month 1 and Month 6 (up to Day 15, Week 6 and Week 26)
    Title
    Percentage of Participants Who Discontinued Study Treatment Due to an AE
    Description
    An AE is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a medicinal product or protocol specified procedure, whether or not considered related to the medicinal product or protocol - specified procedure. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition that is temporally associated with the use of the Sponsor's product, is also an AE.
    Time Frame
    Up to Month 6
    Title
    Percentage of Participants With Events of Clinical Interest (ECI)
    Description
    An event of clinical interest (ECI) is identified as any overdose, elevated liver values meeting threshold criteria (aspartate aminotransferase or alanine aminotransferase ≥3x upper limit of normal (ULN); total bilirubin ≥2x ULN, and, at the same time, alkaline phosphatase <2xULN). Additionally, confirmed, diagnosed autoimmune conditions are considered ECIs.
    Time Frame
    Up to 18 months
    Title
    Geometric Mean Titer of HCMV-specific Neutralizing Antibody After Vaccination 3
    Description
    Serum samples for measuring neutralizing antibodies using the Merck Neutralizing Antibody (NAb) assay were collected at month 7. The LiCor-based near-infrared dye (NIRDye) In-Cell Western (ICW) HCMV microneutralization assay was used to detect and quantify anti-HCMV neutralizing antibodies. The primary hypothesis was that for HCMV-seronegative participants, at least 1 of the vaccination groups receiving V160 formulated with or without adjuvant would exhibit higher HCMV-specific neutralizing antibody titers than the placebo group.
    Time Frame
    Month 7 (1 month after vaccination 3 at Month 6)
    Secondary Outcome Measure Information:
    Title
    Geometric Mean Count of Peripheral Blood Mononuclear Cells Secreting Interferon-Gamma
    Description
    In order to evaluate the cellular immune response to the vaccine(s), the HCMV enzyme-linked immunospot (ELISPOT) assay was used to detect interferon gamma (IFN-γ) secreting HCMV-specific cells from peripheral blood mononuclear cells (PBMCs). Results are expressed as the frequency of spot forming cells (SFCs) per million PBMCs (SFC/10^6 PBMCs). Results are presented for the following HCMV proteins: pp65, Immediate early Protein 1 (IE1), Immediate early Protein 2 (IE2), Glycoprotein B (gB), and also for purified HCMV virion stock.
    Time Frame
    Month 7 (1 month after vaccination 3 at Month 6)
    Title
    Geometric Mean Concentration of Interferon-Gamma After Stimulation of Whole Blood Sample With Pooled HCMV Antigen Peptides
    Description
    In response to HCMV-specific stimulation of whole blood specimens the whole Blood Cytokine Stimulation (WBStim) assay was used to detect the secretion of interferon gamma (IFN -γ) by an ELISA assay. Results are presented for the following HCMV proteins: pp65, IE1, and gB.
    Time Frame
    Month 7 (1 month after vaccination 3 at Month 6)
    Title
    Geometric Mean Titer of HCMV-specific Neutralizing Antibody After Vaccinations 1 and 2
    Description
    Serum samples for measuring neutralizing antibodies using the Merck NAb assay were collected at months 1 and 2. The LiCor-based near-infrared dye (NIRDye) In-Cell Western (ICW) HCMV microneutralization assay was used to detect and quantify anti-HCMV neutralizing antibodies. Values below the lower limit of titer are represented by NA.
    Time Frame
    Month 1 and 2 (one month after vaccination 1 [Day 1] and vaccination 2 [Month 1])

    10. Eligibility

    Sex
    All
    Minimum Age & Unit of Time
    18 Years
    Accepts Healthy Volunteers
    Accepts Healthy Volunteers
    Eligibility Criteria
    Inclusion Criteria: Healthy based on medical history and physical examination Serologically confirmed to be HCMV seronegative or HCMV seropositive Agrees to avoid unusual, unaccustomed strenuous, vigorous physical exercise/activity from 72 hours before through 72 hours after each dose of study vaccine Body weight ≥110 lbs (50 kg) and body mass index (BMI) of 19 to 32 kg/m^2 If of reproductive potential, agrees to the following during the study and for 4 weeks after the last dose of study vaccine: 1) practice abstinence from heterosexual activity, or 2) use or have their partner use 2 allowable methods of birth control during heterosexual activity Exclusion Criteria: Has previously received any cytomegalovirus vaccine Has history of allergic reaction or anaphylactic reaction to any vaccine component that required medical intervention Has history of any severe allergic reaction that required medical intervention Is pregnant or breastfeeding or expecting to conceive from 2 weeks before the study through 1 month after the last dose of study vaccine Plans to donate eggs or sperm from study start through 1 month after the last dose of study drug Has impairment of immunologic function including, but not limited to autoimmune disease, splenectomy, or human immunodeficiency virus acquired immunodeficiency syndrome (HIV/AIDS) Received systemic corticosteroids for ≥14 consecutive days and has not completed treatment within 30 days of study start Received immunosuppressive therapy including, but not limited to rapamycin and equivalents, tacrolimus, FK-506, fujimycin, or other therapies used for solid organ/cell transplant, radiation therapy, immunosuppressive/cytotoxic chemotherapy, or other therapy known to interfere with the immune response within 1 year of study start Has a condition in which repeated venipuncture or injections pose more than minimal risk, such as hemophilia, thrombocytopenia or other severe coagulation disorders, or significantly impaired venous access Has a condition that requires active medical intervention or monitoring such as diabetes mellitus, autoimmune disease, or a clinically significant chronic medical condition that is considered progressive Has history within the past 5 years or current drug or alcohol abuse Has major psychiatric illness Is legally or mentally incapacitated Has participated in another clinical study in the past 4 weeks, or plans during the present study to participate in a treatment-based study or a study in which an invasive procedure is performed Has received valganciclovir, ganciclovir, valacyclovir, foscarnet, or cidofovir from 4 weeks prior to 1 month following each V160 vaccination
    Overall Study Officials:
    First Name & Middle Initial & Last Name & Degree
    Medical Director
    Organizational Affiliation
    Merck Sharp & Dohme LLC
    Official's Role
    Study Director

    12. IPD Sharing Statement

    Plan to Share IPD
    Yes
    IPD Sharing Plan Description
    http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf
    IPD Sharing URL
    http://engagezone.msd.com/ds_documentation.php
    Citations:
    PubMed Identifier
    33031517
    Citation
    Cox KS, Zhang L, Freed DC, Tang A, Zhang S, Zhou Y, Wang IM, Rupp RE, Adler SP, Musey LK, Wang D, Vora KA, Fu TM. Functional Evaluation and Genetic Evolution of Human T-Cell Responses After Vaccination With a Conditionally Replication-Defective Cytomegalovirus Vaccine. J Infect Dis. 2021 Jun 4;223(11):2001-2012. doi: 10.1093/infdis/jiaa631.
    Results Reference
    derived
    PubMed Identifier
    31535143
    Citation
    Adler SP, Lewis N, Conlon A, Christiansen MP, Al-Ibrahim M, Rupp R, Fu TM, Bautista O, Tang H, Wang D, Fisher A, Culp T, Das R, Beck K, Tamms G, Musey L; V160-001 Study Group. Phase 1 Clinical Trial of a Conditionally Replication-Defective Human Cytomegalovirus (CMV) Vaccine in CMV-Seronegative Subjects. J Infect Dis. 2019 Jul 2;220(3):411-419. doi: 10.1093/infdis/jiz141.
    Results Reference
    derived

    Learn more about this trial

    Safety, Tolerability, and Immunogenicity of the Human Cytomegalovirus Vaccine (V160) in Healthy Adults (V160-001)

    We'll reach out to this number within 24 hrs