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ExPEC10V

Phase 1

Extraintestinal Pathogenic Escherichia Coli Prevention | Monoclonal antibody | Gastrointestinal |Johnson & Johnson|Last Updated: Jun 5, 2026

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-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment836
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT03819049A Study of Three Different Doses of VAC52416 (ExPEC10V) in Adults Aged 60 to 85 Years in Stable HealthPHASE1 COMPLETED 836Jun 6, 2019Dec 18, 2024Jun 5, 202629 United States, Belgium +3
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Study Endpoints
Primary Endpoints
Cohort 1: Number of Participants With Solicited Local (Injection Site) Adverse Events (AEs) for 14 Days After Vaccination on Day 1
Up to 14 days post vaccination on Day 1 (from Day 1 up to Day 15)

Number of participants with solicited local AEs for 14 days after vaccination on Day 1 were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. Solicited local AEs were precisely defined events that participants were specifically asked about and which were noted by participants in the diary. Solicited local (injection site) AEs included injection site pain/tenderness, erythema and swelling at the study vaccine injection site, were used to assess the reactogenicity of the study vaccine and were pre-defined local (injection site). All solicited AEs at the injection site (local) were considered related to the study vaccine administration.

Cohort 1: Number of Participants With Solicited Systemic Adverse Events (AEs) Collected for 14 Days After Vaccination on Day 1
Up to 14 days post vaccination on Day 1 (from Day 1 up to Day 15)

Number of participants with solicited systemic AEs 14 days after vaccination on Day 1 were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. Solicited systemic AEs included fatigue, headache, nausea, fever and myalgia, for which participants were specifically questioned and which were noted by participants in their participant diary for 14 days post-vaccination (day of vaccination and the subsequent 14 days).

Cohort 1: Number of Participants With Unsolicited Adverse Events (AEs) up to 29 Days After Vaccination on Day 1
Up to 29 days post vaccination on Day 1 (from Day 1 up to Day 30)

Number of participants with unsolicited AEs up to 29 days after vaccination on Day 1 were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.

Cohort 1: Number of Participants With Serious Adverse Events (SAEs) up to Day 181
Day 1 (post vaccination) up to Day 181

Number of participants with SAEs up to Day 181 were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. An SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect; suspected transmission of any infectious agent via a medicinal product or medically important.

Cohort 2: Number of Participants With Solicited Local (Injection Site) Adverse Events (AEs) Collected for 14 Days After Vaccination on Day 1
Up to 14 days post vaccination on Day 1 (from Day 1 up to Day 15)

Number of participants with solicited local AEs for 14 days after vaccination on Day 1 were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. Solicited local AEs were precisely defined events that participants were specifically asked about and which were noted by participants in the diary. Solicited local (injection site) AEs included injection site pain/tenderness, erythema and swelling at the study vaccine injection site, were used to assess the reactogenicity of the study vaccine and were pre-defined local (injection site). All solicited AEs at the injection site (local) were considered related to the study vaccine administration.

Cohort 2: Number of Participants With Solicited Systemic Adverse Events (AEs) Collected for 14 Days After Vaccination on Day 1
Up to 14 days post vaccination on Day 1 (from Day 1 up to Day 15)

Number of participants with solicited systemic AEs 14 days after vaccination on Day 1 were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. Solicited systemic AEs included fatigue, headache, nausea, fever and myalgia, for which participants were specifically questioned and which were noted by participants in their participant diary for 14 days post-vaccination (day of vaccination and the subsequent 14 days).

Cohort 2: Number of Participants With Unsolicited Adverse Events (AEs) 29 Days After Vaccination on Day 1
Up to 29 days post vaccination on Day 1 (from Day 1 up to Day 30)

Number of participants with unsolicited AEs up to 29 days after vaccination on Day 1 were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.

Cohort 2: Number of Participants With Serious Adverse Events (SAEs) up to Day 181
Day 1 (post vaccination) up to Day 181

Number of participants with SAEs up to Day 181 were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. An SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect; suspected transmission of any infectious agent via a medicinal product or medically important.

Cohort 1: Geometric Mean Titers (GMTs) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by Multiplex Electrochemiluminescent (ECL) Based Immunoassay on Day 15
Day 15

GMTs of serotype-specific total IgG serum antibodies as measured by multiplex ECL based immunoassay were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and exotoxin protein A (EPA) were determined in serum from collected blood samples. Lower limit of quantification (LLOQ) values for O1A: 69149, O2: 65287, O4: 67356, O6A: 150748, O8: 72196, O15: 66910, O16: 71586, O18A: 70519, O25B: 61990, O75: 133019, and EPA: 66165. Any titer less than LLOQ is replaced by half of LLOQ (0.5\*LLOQ).

Cohort 1: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype Specific Antibodies as Measured by Multiplex ECL Based Immunoassay on Day 15
Baseline (Day 1, pre-vaccination) and Day 15

GMR of fold changes from baseline for serotype specific antibodies as measured by multiplex ECL based immunoassay on Day 15 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA were determined in serum from collected blood samples by multiplex ECL based immunoassay. GMR of fold change from baseline was calculated as the ratio of GMTs on Day 15 and pre-vaccination (on Day 1). Any titer less than LLOQ is replaced by value of LLOQ.

Cohort 1: Percentage of Participants With a Greater Than or Equal to (>=) 2-Fold and >=4-Fold Increase From Baseline in Serotype Specific Serum Antibody Titers as Measured by Multiplex ECL Based Immunoassay on Day 15
Baseline (Day 1, pre-vaccination) and Day 15

Percentage of participants with a \>=2-fold and \>=4-fold increase (FI) from baseline in serotype specific serum antibody titers as measured by multiplex ECL based immunoassay on Day 15 was reported. The fold (\>=2-fold and \>=4-fold) increase from baseline to Day 15 for the serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA was calculated as the ratio of titer values of serum antibody on Day 15 and pre-vaccination (on day 1) that is Day 15/Day 1. Any titer less than LLOQ is replaced by value of LLOQ.

Cohort 1: Geometric Mean Titers (GMT) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by Multiplex Opsonophagocytic Assay (MOPA) on Day 15
Day 15

GMTs of serotype-specific total IgG serum antibodies as measured by MOPA were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B and O75 were determined in serum from collected blood samples. LLOQ values were: O1A: 53, O2: 51, O4: 29, O6A: 47, O8: 196, O15: 37, O16: 54, O18A: 12, O25B: 65, and O75: 37. Any titer less than LLOQ is replaced by half of LLOQ (0.5\*LLOQ).

Cohort 1: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype Specific Antibodies as Measured by MOPA on Day 15
Baseline (Day 1, pre-vaccination), Day 15

GMR of fold changes from baseline for serotype specific antibodies as measured by MOPA on Day 15 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B and O75 were determined in serum from collected blood samples by MOPA. GMR of fold change from baseline was calculated as the ratio of GMTs on Day 15 and pre-vaccination (on Day 1). Any titer less than LLOQ is replaced by value of LLOQ.

Cohort 1: Percentage of Participants With a >= 2-Fold and >=4-Fold Increase in Serotype-specific Serum Antibody Titers Measured by MOPA on Day 15
Baseline (Day 1, pre-vaccination) and Day 15

Percentage of participants with a \>=2-fold and \>=4-fold increase from baseline in serotype specific serum antibody titers as measured by MOPA on Day 15 was reported. The fold (\>=2-fold and \>=4-fold) increase from baseline to Day 15 for the serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, and O75 was calculated as the ratio of titer values of serum antibody on Day 15 and pre-vaccination (on day 1) that is, Day 15/Day 1. Any titer less than LLOQ is replaced by value of LLOQ.

Cohort 2: Geometric Mean Titers (GMTs) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by Multiplex ECL Based Immunoassay on Day 30
At Day 30

GMTs of serotype-specific total IgG serum antibodies as measured by multiplex ECL based immunoassay were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA were determined in serum from collected blood samples. LLOQ values for O1A: 69149, O2: 65287, O4: 67356, O6A: 150748, O8: 72196, O15: 66910, O16: 71586, O18A: 70519, O25B: 61990, O75: 133019, and EPA: 66165. Any titer less than LLOQ is replaced by half of LLOQ (0.5\*LLOQ).

Cohort 2: Geometric Mean Ratio (GMR) of Fold Changes From Baseline For Serotype-specific Antibodies Measured by Multiplex ECL Based Immunoassay on Day 30
Baseline (Day 1, pre-vaccination) and Day 30

GMR of fold changes from baseline for serotype-specific antibodies as measured by multiplex ECL based immunoassay on Day 30 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA were determined in serum from collected blood samples by multiplex ECL based immunoassay. GMR of fold change from baseline was calculated as the ratio of GMTs on Day 30 and pre-vaccination (on Day 1). Any titer less than LLOQ is replaced by value of LLOQ.

Cohort 2: Percentage of Participants With a >=2-Fold and >=4-Fold Increase From Baseline in Serotype Specific Serum Antibody Titers as Measured by Multiplex ECL Based Immunoassay on Day 30
Baseline (Day 1, pre-vaccination) and Day 30

Percentage of participants with a \>=2-fold and \>=4-fold increase from baseline in serotype specific serum antibody titers as measured by multiplex ECL based immunoassay on Day 30 was reported. The fold (\>=2-fold and \>=4-fold) increase from baseline to Day 30 for the serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA was calculated as the ratio of titer values of serum antibody on Day 30 and pre-vaccination (on day 1) that is, Day 30/Day 1. Any titer less than LLOQ is replaced by value of LLOQ.

Cohort 2: Geometric Mean Titer (GMT) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by Multiplex Opsonophagocytic Assay (MOPA) on Day 30
At Day 30

GMTs of serotype-specific total IgG serum antibodies as measured by MOPA were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B, and O75 were determined in serum from collected blood samples. For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. LLOQ values were O1A: 33, O2: 42, O4: 12, O6A: 62, O15: 75, O16: 17, O18A: 44, O25B: 58, O75: 14. Any titer less than LLOQ is replaced by half of LLOQ (0.5\*LLOQ).

Cohort 2: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype Specific Antibodies as Measured by MOPA on Day 30
Baseline (Day 1, pre-vaccination) and Day 30

GMR of fold changes from baseline for serotype specific antibodies as measured by MOPA on Day 30 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B and O75 were determined in serum from collected blood samples by MOPA. GMR of fold change from baseline was calculated as the ratio of GMTs on Day 30 and pre-vaccination (on Day 1). For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. Any titer less than LLOQ is replaced by value of LLOQ.

Cohort 2: Percentage of Participants With a >= 2-Fold and >=4-Fold Increase in Serotype-specific Serum Antibodies Titers Measured by MOPA on Day 30
Baseline (Day 1, pre-vaccination) and Day 30

Percentage of participants with a \>=2-fold and \>=4-fold increase from baseline in serotype specific serum antibodies titers as measured by MOPA on Day 30 was reported. The fold (\>=2-fold and \>=4-fold increase from baseline to Day 30 for the serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B and O75 was calculated as the ratio of titer values of serum antibodies on Day 30 and pre-vaccination (on day 1 that is, Day 30/Day 1. For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. Any titer less than LLOQ is replaced by value of LLOQ.

Secondary Endpoints
Cohort 1: Correlation Between the Multiplex ECL-Based Immunoassay and the MOPA Functional Titers by Serotypes on Day 15
Day 15
Cohort 1: Geometric Mean Titers (GMTs) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by Multiplex ECL Based Immunoassay on Days 30 and 181
Days 30 and 181
Cohort 1: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype-specific Antibodies Measured by Multiplex ECL Based Immunoassay on Days 30 and 181
Baseline (Day 1, pre-vaccination) and Days 30 and 181
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeOTHER
Treatment Arms
ArmTypeDescription
Cohort 1: ExPEC10V (Low Dose)EXPERIMENTALParticipants will be randomized to receive a single intramuscular (IM) injection of low dose ExPEC10V on Day 1.
Cohort 1: ExPEC10V (Medium dose)EXPERIMENTALParticipants will be randomized to receive a single IM injection of medium dose ExPEC10V on Day 1.
Cohort 1: ExPEC10V (High dose)EXPERIMENTALParticipants will be randomized to receive a single IM injection of high dose ExPEC10V on Day 1.
Cohort 1: ExPEC4VEXPERIMENTALParticipants will be randomized to receive a single IM injection of ExPEC4V on Day 1.
Cohort 1: Prevnar 13EXPERIMENTALParticipants will be randomized to receive a single IM injection of Prevnar 13 on Day 1.
Cohort 2: ExPEC10VEXPERIMENTALParticipants will be randomized to receive a single IM injection of selected dose of ExPEC10V on Day 1. The ExPEC10V dose used in Cohort 2 will be based on the primary analysis (Day 30) results of Cohort 1.
Cohort 2: PlaceboPLACEBO_COMPARATORParticipants will be randomized to receive a single IM injection of matching placebo on Day 1.
Interventions
NameTypeDescription
ExPEC10VBIOLOGICALParticipants will receive a single IM injection of ExPEC10V (1 of 3 doses \[low or medium or high\]) in Cohort 1 and ExPEC10V selected dose (based on the primary analysis results of Cohort 1) in Cohort 2 on Day 1.
ExPEC4VBIOLOGICALParticipants will receive a single IM injection of ExPEC4V on Day 1.
Prevnar 13BIOLOGICALParticipants will receive a single IM injection of Prevnar 13 on Day 1.
PlaceboBIOLOGICALParticipants will receive single IM injection of matching placebo on Day 1.
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Eligibility Criteria
Age Range60 Years — N/A
SexALL
Healthy VolunteersYes
Study Sites29

Inclusion Criteria: * Must have a body mass index (BMI) of greater than (\>) 18.5 or less than 40 kilogram per meter square (kg/m\^2) * Before randomization, a woman must be: postmenopausal - A postmenopausal state is defined as no menses for 12 months without an alternative medical cause; or not i...

Countries:United StatesBelgiumFranceNetherlandsSpain
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Recent Changes (Last 90 Days)
LOWJun 5, 2026NCT03819049lastUpdatePostDate: changed
LOWJun 5, 2026NCT03819049lastUpdatePostDate: changed
LOWJun 5, 2026NCT03819049lastUpdatePostDate: changed
LOWJun 5, 2026NCT03819049lastUpdatePostDate: changed