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A Study of an Investigational V212/Heat-Treated Varicella-Zoster Virus (VZV) Vaccine in Immunocompromised Adults (V212-002)

A Phase I, Double-Blind, Randomized, Placebo-Controlled, Multicenter Clinical Trial to Evaluate the Safety and Immunogenicity of V212/Heat-Treated Varicella-Zoster Virus (VZV) Vaccine in Immunocompromised Adults

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00535236
Enrollment
341
Registered
2007-09-26
Start date
2007-11-02
Completion date
2010-01-26
Last updated
2019-05-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Herpes Zoster, Herpes Zoster-related Complications

Keywords

Prevention of herpes zoster and HZ-related complications

Brief summary

This study will evaluate the safety and immunogenicity of a heat-treated VZV vaccine in autologous or allogeneic hematopoietic cell transplant (HCT) recipients, human immunodeficiency virus (HIV)-infected participants with a baseline cluster of differentiation 4 (CD4) cell count ≤200 cells/mm\^3, participants with solid tumor malignancy (STM; breast, colorectal, lung, or ovarian malignancies) receiving chemotherapy, and participants with hematologic malignancy (HM; leukemia or leukemia-like disease, lymphoma or lymphoma-like disease, or multiple myeloma). The primary hypothesis is that the heat-treated VZV vaccine will elicit significant VZV-specific immune responses measured by either glycoprotein-based enzyme-linked immunosorbent assay (gpELISA) or VZV gamma interferon enzyme-linked immunospot (IFN-ELISPOT) at 28 days post dose vaccination 4 in, HIV-infected participants, participants with STM, and participants with HM. The primary immunogenicity objective and endpoints were considered by the protocol as exploratory for the autologous and allogeneic HCT groups.

Interventions

BIOLOGICALV212

0.65 ml V212 in 4 dose regimen. Treatment period of 125 days

BIOLOGICALPlacebo

0.65 ml V212 Pbo in 4 dose regimen. Treatment period of 125 days

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Men and women \> or = to 18 years of age who are scheduled to receive an autologous or allogeneic hematopoietic cell transplant within 60 days of enrollment * HIV-infected participants with a baseline CD4 cell count \< or = to 200 cells/mm\^3 * Participants with hematologic malignancies; or participants who are receiving chemotherapy for breast, colorectal, lung, or ovarian malignancies

Exclusion criteria

* History of allergy to any vaccine component * Prior history of HZ * Prior history of receipt of any varicella or zoster vaccine

Design outcomes

Primary

MeasureTime frameDescription
Geometric Mean Fold Rise (GMFR) in Varicella-Zoster (VZV) Antibody Responses Measured by Glycoprotein Enzyme-linked Immunosorbent Assay (gpELISA)Baseline (Day 1 predose vaccination 1) and 28 days postdose 4 (~Day 118)Blood sample taken at predose (Day 1) and 28 days post vaccination 4 to determine the geometric mean titre (GMT) of VZV antibodies via gpELISA. The GMFR was calculated as GMT Post-dose/GMT Pre-vaccination
Geometric Mean Fold Rise (GMFR) in Varicella-Zoster (VZV) Antibody Responses Measured by by VZV Interferon-gamma (IFN-g) Enzyme-linked Immunospot (ELISPOT) AssayBaseline (Day 1 predose vaccination 1) and 28 days postdose 4 (~Day 118)Blood sample taken at predose (Day 1) and 28 days post vaccination 4 to determine the geometric mean titre (GMT) of VZV antibodies via ELISPOT. The GMFR was calculated as GMT Post-dose/GMT Pre-vaccination
Percentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)up to 28 days post vaccination 4 (up to ~Day 118)An SAE was defined as an adverse event that resulted in death, was life threatening, resulted in persistent or significant disability or incapacity, resulted in or prolonged a hospitalization, is a congenital anomaly or birth defect, is a cancer, was an overdose, or was an important medical event based on appropriate medical judgment. The percentage of participants that experienced at least 1 SAE was summarized.

Secondary

MeasureTime frameDescription
Percentage of Participants With an Injection-site Adverse Event Prompted on the Vaccination Report Card (VRC)Up to Day 5 post any vaccinationAn adverse event (AE) was defined as any untoward medical occurrence in a participant which did not necessarily have a causal relationship with study drug. An AE could therefore have been any unfavourable and unintended sign, symptom, or disease temporally associated with the use of study drug or a protocol-specified procedure, whether or not considered related to the study drug or protocol-specified procedure. Any worsening of a preexisting condition that was temporally associated with the study drug or protocol-specified procedure was also an AE. The percentage of participants with an injection-site AE prompted on the VRC was summarized.
Percentage of Participants With a Systemic Adverse Event Prompted on the VRCUp to 28 days post vaccination 4 (up to ~118 days)An adverse event (AE) was defined as any untoward medical occurrence in a participant which did not necessarily have a causal relationship with study drug. An AE could therefore have been any unfavourable and unintended sign, symptom, or disease temporally associated with the use of study drug or a protocol-specified procedure, whether or not considered related to the study drug or protocol-specified procedure. Any worsening of a preexisting condition that was temporally associated with the study drug or protocol-specified procedure was also an AE. The percentage of participants with a VRC-prompted systemic (non-injection site) AE was summarized.
Percentage of Participants With Elevated Oral Temperature (≥101.0°F (≥38.3ºC) Prompted on the VRCUp to 28 days post any vaccination (up to ~118 days)Participants were instructed on the VRC to take and record their oral (or oral equivalent) temperature daily from the day of vaccination from the date of each vaccine dose through the day prior to the next dose, or for 28 days. Elevated temperature was defined as ≥101.0°F (≥38.3ºC). The percentage of participants that record an elevated temperature was summarized.

Participant flow

Recruitment details

Autologous or allogeneic hematopoietic cell transplant (HCT) recipients, human immunodeficiency virus (HIV)-infected participants, participants with solid tumor malignancy (STM) and receiving chemotherapy, and participants with hematologic malignancy (HM) were enrolled in the study.

Participants by arm

ArmCount
Autologous HCT-V212
Participants receive V212 as a 0.65 mL subcutaneous injection in a four-dose regimen, approximately 30 days apart, preferably in the deltoid area of the arm, alternating arms for each dose.
40
Autologous HCT-Placebo
Participants receive placebo as a 0.65 mL subcutaneous injection in a four-dose regimen, approximately 30 days apart, preferably in the deltoid area of the arm, alternating arms for each dose.
10
Allogeneic HCT-V212
Participants receive V212 as a 0.65 mL subcutaneous injection in a four-dose regimen, approximately 30 days apart, preferably in the deltoid area of the arm, alternating arms for each dose.
41
Allogeneic HCT-Placebo
Participants receive placebo as a 0.65 mL subcutaneous injection in a four-dose regimen, approximately 30 days apart, preferably in the deltoid area of the arm, alternating arms for each dose.
10
STM-V212
Participants receive V212 as a 0.65 mL subcutaneous injection in a four-dose regimen, approximately 30 days apart, preferably in the deltoid area of the arm, alternating arms for each dose.
59
STM-Placebo
Participants receive placebo as a 0.65 mL subcutaneous injection in a four-dose regimen, approximately 30 days apart, preferably in the deltoid area of the arm, alternating arms for each dose.
20
HM-V212
Participants receive V212 as a 0.65 mL subcutaneous injection in a four-dose regimen, approximately 30 days apart, preferably in the deltoid area of the arm, alternating arms for each dose.
62
HM-Placebo
Participants receive placebo as a 0.65 mL subcutaneous injection in a four-dose regimen, approximately 30 days apart, preferably in the deltoid area of the arm, alternating arms for each dose.
19
HIV-V212
Participants receive V212 as a 0.65 mL subcutaneous injection in a four-dose regimen, approximately 30 days apart, preferably in the deltoid area of the arm, alternating arms for each dose.
60
HIV-Placebo
Participants receive placebo as a 0.65 mL subcutaneous injection in a four-dose regimen, approximately 30 days apart, preferably in the deltoid area of the arm, alternating arms for each dose.
20
Total341

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005FG006FG007FG008FG009
Overall StudyAdverse Event1093305121
Overall StudyLost to Follow-up1200200061
Overall StudyPhysician Decision0000101000
Overall StudyProtocol Violation2010000010
Overall StudyWithdrawal by Subject3021615042

Baseline characteristics

CharacteristicAutologous HCT-V212Autologous HCT-PlaceboAllogeneic HCT-V212Allogeneic HCT-PlaceboSTM-V212STM-PlaceboHM-V212HM-PlaceboHIV-V212HIV-PlaceboTotal
Age, Customized
18 to 49 years
18 Participants6 Participants27 Participants4 Participants19 Participants3 Participants7 Participants4 Participants40 Participants14 Participants142 Participants
Age, Customized
50 to 59 years
12 Participants1 Participants8 Participants3 Participants17 Participants4 Participants12 Participants3 Participants17 Participants6 Participants83 Participants
Age, Customized
60 to 69 years
9 Participants3 Participants5 Participants2 Participants17 Participants4 Participants18 Participants6 Participants3 Participants0 Participants67 Participants
Age, Customized
70 to 79 years
1 Participants0 Participants1 Participants1 Participants5 Participants6 Participants19 Participants2 Participants0 Participants0 Participants35 Participants
Age, Customized
≥ 80 years
0 Participants0 Participants0 Participants0 Participants1 Participants3 Participants6 Participants4 Participants0 Participants0 Participants14 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
4 Participants2 Participants7 Participants1 Participants8 Participants2 Participants5 Participants1 Participants8 Participants3 Participants41 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
36 Participants8 Participants34 Participants9 Participants51 Participants18 Participants57 Participants18 Participants52 Participants17 Participants300 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
3 Participants0 Participants0 Participants0 Participants4 Participants0 Participants1 Participants1 Participants0 Participants0 Participants9 Participants
Race (NIH/OMB)
Black or African American
1 Participants1 Participants5 Participants0 Participants20 Participants7 Participants6 Participants2 Participants38 Participants11 Participants91 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants1 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
36 Participants9 Participants36 Participants10 Participants35 Participants13 Participants55 Participants16 Participants21 Participants9 Participants240 Participants
Sex: Female, Male
Female
16 Participants3 Participants14 Participants1 Participants40 Participants15 Participants23 Participants8 Participants11 Participants4 Participants135 Participants
Sex: Female, Male
Male
24 Participants7 Participants27 Participants9 Participants19 Participants5 Participants39 Participants11 Participants49 Participants16 Participants206 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
EG009
affected / at risk
deaths
Total, all-cause mortality
1 / 400 / 1011 / 402 / 101 / 570 / 194 / 610 / 191 / 600 / 20
other
Total, other adverse events
40 / 4010 / 1040 / 409 / 1038 / 5713 / 1951 / 6110 / 1933 / 6012 / 20
serious
Total, serious adverse events
13 / 402 / 1032 / 407 / 107 / 572 / 1912 / 611 / 198 / 602 / 20

Outcome results

Primary

Geometric Mean Fold Rise (GMFR) in Varicella-Zoster (VZV) Antibody Responses Measured by by VZV Interferon-gamma (IFN-g) Enzyme-linked Immunospot (ELISPOT) Assay

Blood sample taken at predose (Day 1) and 28 days post vaccination 4 to determine the geometric mean titre (GMT) of VZV antibodies via ELISPOT. The GMFR was calculated as GMT Post-dose/GMT Pre-vaccination

Time frame: Baseline (Day 1 predose vaccination 1) and 28 days postdose 4 (~Day 118)

Population: All randomised participants in STM, HM and HIV arms who had received at least 1 dose of V212, had at least 1 valid immunogenicity evaluation for VZV antibody and had post-vaccination IFN-g data available for endpoint. As per the protocol, immunogenicity results for the autologous and allogeneic HCT groups were considered exploratory.

ArmMeasureValue (GEOMETRIC_MEAN)
STM-V212Geometric Mean Fold Rise (GMFR) in Varicella-Zoster (VZV) Antibody Responses Measured by by VZV Interferon-gamma (IFN-g) Enzyme-linked Immunospot (ELISPOT) Assay3.00 Ratio
HM-V212Geometric Mean Fold Rise (GMFR) in Varicella-Zoster (VZV) Antibody Responses Measured by by VZV Interferon-gamma (IFN-g) Enzyme-linked Immunospot (ELISPOT) Assay2.23 Ratio
HIV-V212Geometric Mean Fold Rise (GMFR) in Varicella-Zoster (VZV) Antibody Responses Measured by by VZV Interferon-gamma (IFN-g) Enzyme-linked Immunospot (ELISPOT) Assay1.76 Ratio
p-value: <0.001Single longitudinal regression model
p-value: 0.004Single longitudinal regression model
p-value: 0.026Single longitudinal regression model
Primary

Geometric Mean Fold Rise (GMFR) in Varicella-Zoster (VZV) Antibody Responses Measured by Glycoprotein Enzyme-linked Immunosorbent Assay (gpELISA)

Blood sample taken at predose (Day 1) and 28 days post vaccination 4 to determine the geometric mean titre (GMT) of VZV antibodies via gpELISA. The GMFR was calculated as GMT Post-dose/GMT Pre-vaccination

Time frame: Baseline (Day 1 predose vaccination 1) and 28 days postdose 4 (~Day 118)

Population: All randomised participants in STM, HM and HIV arms who had received at least 1 dose of V212, had at least 1 valid immunogenicity evaluation for VZV antibody and had post-vaccination gpELISA data available for endpoint. As per the protocol, immunogenicity results for the autologous and allogeneic HCT groups were considered exploratory.

ArmMeasureValue (GEOMETRIC_MEAN)
STM-V212Geometric Mean Fold Rise (GMFR) in Varicella-Zoster (VZV) Antibody Responses Measured by Glycoprotein Enzyme-linked Immunosorbent Assay (gpELISA)2.35 Ratio
HM-V212Geometric Mean Fold Rise (GMFR) in Varicella-Zoster (VZV) Antibody Responses Measured by Glycoprotein Enzyme-linked Immunosorbent Assay (gpELISA)1.28 Ratio
HIV-V212Geometric Mean Fold Rise (GMFR) in Varicella-Zoster (VZV) Antibody Responses Measured by Glycoprotein Enzyme-linked Immunosorbent Assay (gpELISA)1.37 Ratio
p-value: <0.001Single longitudinal regression model
p-value: 0.003Single longitudinal regression model
p-value: 0.017Single longitudinal regression model
Primary

Percentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)

An SAE was defined as an adverse event that resulted in death, was life threatening, resulted in persistent or significant disability or incapacity, resulted in or prolonged a hospitalization, is a congenital anomaly or birth defect, is a cancer, was an overdose, or was an important medical event based on appropriate medical judgment. The percentage of participants that experienced at least 1 SAE was summarized.

Time frame: up to 28 days post vaccination 4 (up to ~Day 118)

Population: All enrolled participants that received at least 1 dose of V212 or placebo and had available follow-up data for endpoint.

ArmMeasureValue (NUMBER)
STM-V212Percentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)32.5 Percentage of Participants
HM-V212Percentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)20.0 Percentage of Participants
HIV-V212Percentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)80.0 Percentage of Participants
Allogeneic HCT-PlaceboPercentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)70.0 Percentage of Participants
STM-V212Percentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)12.3 Percentage of Participants
STM-PlaceboPercentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)10.5 Percentage of Participants
HM-V212Percentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)19.7 Percentage of Participants
HM-PlaceboPercentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)5.3 Percentage of Participants
HIV-V212Percentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)13.3 Percentage of Participants
HIV-PlaceboPercentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)10.0 Percentage of Participants
95% CI: [-21.7, 35.3]
95% CI: [-15.1, 42.9]
95% CI: [-20.4, 15.7]
95% CI: [-6.5, 27.6]
95% CI: [-18.1, 17]
Secondary

Percentage of Participants With an Injection-site Adverse Event Prompted on the Vaccination Report Card (VRC)

An adverse event (AE) was defined as any untoward medical occurrence in a participant which did not necessarily have a causal relationship with study drug. An AE could therefore have been any unfavourable and unintended sign, symptom, or disease temporally associated with the use of study drug or a protocol-specified procedure, whether or not considered related to the study drug or protocol-specified procedure. Any worsening of a preexisting condition that was temporally associated with the study drug or protocol-specified procedure was also an AE. The percentage of participants with an injection-site AE prompted on the VRC was summarized.

Time frame: Up to Day 5 post any vaccination

Population: All enrolled participants that received at least 1 dose of V212 or placebo and had available follow-up data for endpoint.

ArmMeasureValue (NUMBER)
STM-V212Percentage of Participants With an Injection-site Adverse Event Prompted on the Vaccination Report Card (VRC)10.0 Percentage of Participants
HM-V212Percentage of Participants With an Injection-site Adverse Event Prompted on the Vaccination Report Card (VRC)10.0 Percentage of Participants
HIV-V212Percentage of Participants With an Injection-site Adverse Event Prompted on the Vaccination Report Card (VRC)10.0 Percentage of Participants
Allogeneic HCT-PlaceboPercentage of Participants With an Injection-site Adverse Event Prompted on the Vaccination Report Card (VRC)0.0 Percentage of Participants
STM-V212Percentage of Participants With an Injection-site Adverse Event Prompted on the Vaccination Report Card (VRC)36.8 Percentage of Participants
STM-PlaceboPercentage of Participants With an Injection-site Adverse Event Prompted on the Vaccination Report Card (VRC)5.3 Percentage of Participants
HM-V212Percentage of Participants With an Injection-site Adverse Event Prompted on the Vaccination Report Card (VRC)31.1 Percentage of Participants
HM-PlaceboPercentage of Participants With an Injection-site Adverse Event Prompted on the Vaccination Report Card (VRC)10.5 Percentage of Participants
HIV-V212Percentage of Participants With an Injection-site Adverse Event Prompted on the Vaccination Report Card (VRC)3.3 Percentage of Participants
HIV-PlaceboPercentage of Participants With an Injection-site Adverse Event Prompted on the Vaccination Report Card (VRC)15.0 Percentage of Participants
p-value: >0.99995% CI: [-31.7, 16.5]Asymptotic method
p-value: 0.30295% CI: [-18.8, 23.2]Asymptotic method
p-value: 0.00995% CI: [9.7, 46.2]Asymptotic method
p-value: 0.04195% CI: [1.3, 36.6]Asymptotic method
p-value: 0.06495% CI: [-33.2, 0.6]Asymptotic method
Secondary

Percentage of Participants With a Systemic Adverse Event Prompted on the VRC

An adverse event (AE) was defined as any untoward medical occurrence in a participant which did not necessarily have a causal relationship with study drug. An AE could therefore have been any unfavourable and unintended sign, symptom, or disease temporally associated with the use of study drug or a protocol-specified procedure, whether or not considered related to the study drug or protocol-specified procedure. Any worsening of a preexisting condition that was temporally associated with the study drug or protocol-specified procedure was also an AE. The percentage of participants with a VRC-prompted systemic (non-injection site) AE was summarized.

Time frame: Up to 28 days post vaccination 4 (up to ~118 days)

Population: All enrolled participants that received at least 1 dose of V212 or placebo and had available follow-up data for endpoint.

ArmMeasureValue (NUMBER)
STM-V212Percentage of Participants With a Systemic Adverse Event Prompted on the VRC5.0 Percentage of Participants
HM-V212Percentage of Participants With a Systemic Adverse Event Prompted on the VRC10.0 Percentage of Participants
HIV-V212Percentage of Participants With a Systemic Adverse Event Prompted on the VRC2.5 Percentage of Participants
Allogeneic HCT-PlaceboPercentage of Participants With a Systemic Adverse Event Prompted on the VRC0.0 Percentage of Participants
STM-V212Percentage of Participants With a Systemic Adverse Event Prompted on the VRC3.5 Percentage of Participants
STM-PlaceboPercentage of Participants With a Systemic Adverse Event Prompted on the VRC0.0 Percentage of Participants
HM-V212Percentage of Participants With a Systemic Adverse Event Prompted on the VRC4.9 Percentage of Participants
HM-PlaceboPercentage of Participants With a Systemic Adverse Event Prompted on the VRC0.0 Percentage of Participants
HIV-V212Percentage of Participants With a Systemic Adverse Event Prompted on the VRC5.0 Percentage of Participants
HIV-PlaceboPercentage of Participants With a Systemic Adverse Event Prompted on the VRC5.0 Percentage of Participants
p-value: 0.55695% CI: [-36.3, 9.5]Asymptotic method
p-value: 0.61795% CI: [-25.8, 13]Asymptotic method
p-value: 0.41195% CI: [-13.7, 12]Asymptotic method
p-value: 0.32895% CI: [-12.3, 13.6]Asymptotic method
p-value: >0.99995% CI: [-19.2, 10]Asymptotic method
Secondary

Percentage of Participants With Elevated Oral Temperature (≥101.0°F (≥38.3ºC) Prompted on the VRC

Participants were instructed on the VRC to take and record their oral (or oral equivalent) temperature daily from the day of vaccination from the date of each vaccine dose through the day prior to the next dose, or for 28 days. Elevated temperature was defined as ≥101.0°F (≥38.3ºC). The percentage of participants that record an elevated temperature was summarized.

Time frame: Up to 28 days post any vaccination (up to ~118 days)

Population: All enrolled participants that received at least 1 dose of V212 or placebo and had available follow-up data for endpoint.

ArmMeasureValue (NUMBER)
STM-V212Percentage of Participants With Elevated Oral Temperature (≥101.0°F (≥38.3ºC) Prompted on the VRC60.5 Percentage of Participants
HM-V212Percentage of Participants With Elevated Oral Temperature (≥101.0°F (≥38.3ºC) Prompted on the VRC50.0 Percentage of Participants
HIV-V212Percentage of Participants With Elevated Oral Temperature (≥101.0°F (≥38.3ºC) Prompted on the VRC66.7 Percentage of Participants
Allogeneic HCT-PlaceboPercentage of Participants With Elevated Oral Temperature (≥101.0°F (≥38.3ºC) Prompted on the VRC60.0 Percentage of Participants
STM-V212Percentage of Participants With Elevated Oral Temperature (≥101.0°F (≥38.3ºC) Prompted on the VRC7.5 Percentage of Participants
STM-PlaceboPercentage of Participants With Elevated Oral Temperature (≥101.0°F (≥38.3ºC) Prompted on the VRC0.0 Percentage of Participants
HM-V212Percentage of Participants With Elevated Oral Temperature (≥101.0°F (≥38.3ºC) Prompted on the VRC12.1 Percentage of Participants
HM-PlaceboPercentage of Participants With Elevated Oral Temperature (≥101.0°F (≥38.3ºC) Prompted on the VRC5.3 Percentage of Participants
HIV-V212Percentage of Participants With Elevated Oral Temperature (≥101.0°F (≥38.3ºC) Prompted on the VRC14.3 Percentage of Participants
HIV-PlaceboPercentage of Participants With Elevated Oral Temperature (≥101.0°F (≥38.3ºC) Prompted on the VRC10.5 Percentage of Participants
p-value: 0.55295% CI: [-21.3, 41.8]Asymptotic method
p-value: 0.69695% CI: [-22.5, 39.4]Asymptotic method
p-value: 0.22195% CI: [-9.8, 18]Asymptotic method
p-value: 0.40295% CI: [-13.7, 19.1]Asymptotic method
p-value: 0.67995% CI: [-18.5, 18.2]Asymptotic method

Source: ClinicalTrials.gov · Data processed: Mar 10, 2026