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HIL-214

Phase 2

Gastroenteritis | Monoclonal antibody | Gastrointestinal |HilleVax, Inc.|Trials Updated: Aug 19, 2025

HIL-214 development status

Highest phase Phase 2
Registered trials 4 across 1 sponsor since May 2001

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials3
Total Enrollment430

FDA Designations

No designations recorded

HIL-214 clinical trials

HIL-214 · 3 trials · 1 indication

Phase 2 2Phase 1 1
NCT05972733Serologic Assay Validation and Proficiency Testing of HIL-214 in AdultsGastroenteritis
COMPLETED80 Analytics
NCT05836012Safety and Immunogenicity of HIL-214 With Routine Pediatric VaccinesGastroenteritis
COMPLETED329 Analytics
PHASE2COMPLETED
Serologic Assay Validation and Proficiency Testing of HIL-214 in Adults
GastroenteritisUnlock trial analytics
PHASE2COMPLETED
Safety and Immunogenicity of HIL-214 With Routine Pediatric Vaccines
GastroenteritisUnlock trial analytics

Study Endpoints

Primary Endpoints

Primary Immunogenicity for Panel Formation
Day 1 to Day 29

Serum samples were obtained for validation of the norovirus GI.1 and GII.4c histoblood group antigen (HBGA)-blocking and total immunoglobulin (pan-Ig) assays. The percentage of participants with a predefined seroresponse (≥4-fold rise in antibody concentration from Day 1 to Day 29) to the GI.1 and GII.4c components of HIL-214 and 95% confidence interval are reported.

Immune Response to the Licensed Pediatric DTaP-Hib-IPV-HepB Vaccine Co-administered With a 2-dose Regimen of HIL-214 at 4 and 6 Months of Age, Compared to That of the Routine Pediatric Vaccines Co-administered With Placebo.
28 days post-dose 2

Evaluate the immune response to the licensed pediatric DTaP-Hib-IPV-HepB vaccine co-administered with a 2-dose regimen of HIL-214 at 4 and 6 months of age, compared to that of the routine pediatric vaccine co-administered with placebo. Due to differing local availability of licensed DTaP-Hib-IPV-HepB vaccine, data are presented by country (Panama and USA). Outcome measures: * Binary (yes/no) variable indicating anti-DT immunoglobulin G (IgG) concentration ≥0.1 IU/mL. * Binary variable indicating anti-TT IgG concentration ≥0.1 IU/mL. * Anti-pertussis \[FHA\], \[PRN\] and \[PTX\]) IgG concentrations. * Binary variable indicating anti-poliovirus neutralizing antibody titers ≥1:8, * Binary variable indicating anti-Haemophilus influenzae type b * Binary variable indicating anti-hepatitis b surface antigen Geometric mean (geometric mean standard deviation) anti-FHA, anti-PRN, and anti-PTX are presented as a separate outcome.

Immune Response to the Licensed Pediatric Pneumococcal 13 Valent (PCV13) Vaccine Co-administered With a 2-dose Regimen of HIL-214 at 4 and 6 Months of Age, Compared to That of the Routine Pediatric Vaccines Co-administered With Placebo.
28 days post-dose 2

The outcome was assessed using measurements of immune response to the concomitant anti-pneumococcal capsular polysaccharide IgG \[serotypes 1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 19A, 19F, 18C, and 23F\]) at 28 days post-dose. Geometric mean concentrations are presented.

Immune Response to the Licensed Pediatric Rotavirus Vaccine (RV1) Vaccine Co-administered With a 2-dose Regimen of HIL-214 at 4 and 6 Months of Age, Compared to That of the Routine Pediatric Vaccines Co-administered With Placebo.
28 days post-dose 2

This outcome was assessed using measurements of immune response to the concomitant RV1 vaccine (anti-RV1 IgA). Geometric mean concentrations at 28 days post-dose 2 are reported.

Safety of HIL-214 Compared to Placebo - AEs Leading to Trial Withdrawal
Day 1 to 6 months post-dose 2

Percentage of Participants with Adverse Events (AEs) Leading to Trial Withdrawal

Safety of HIL-214 Compared to Placebo - Solicited Local Adverse Events
Day 1 to Day 7 post-dose 1 and Day 1 to Day 7 post-dose 2 (Day 36 to Day 56)

Percentage of Participants with Solicited Local (Injection Site) Adverse Events (AEs) Within 7 Days of Vaccine Administration (any dose). Assessed AEs included pain, erythema, induration, and swelling.

Safety of HIL-214 Compared to Placebo - Solicited Systemic Adverse Events
Day 1 to Day 7 post-dose 1 and Day 1 to Day 7 post-dose 2 (Day 36 to Day 56)

Percentage of Participants with Solicited Systemic Adverse Events (AEs) Within 7 Days of Vaccine Administration. Assessed AEs included drowsiness, irritability/fussiness, loss of appetite, fever, vomiting, and diarrhea.

Safety of HIL-214 Compared to Placebo - Percentage of Participants With AEs Leading to Vaccine Withdrawal
Up to 56 days post-dose 1

Percentage of participants with AEs that lead to withdrawal of trial vaccine up to the planned time of second dose administration.

Secondary Endpoints

Adverse Events Leading to Participant Withdrawal From the Trial
Day 1 to Day 85
Percentage of Participants With Solicited Local (Injection Site) Adverse Events Within 7 Days of Vaccine Administration
Day 1 to Day 7
Percentage of Participants With Solicited Systemic Adverse Events (AEs) Within 7 Days of Vaccine Administration
Day 1 to Day 7
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Open Arm StudyEXPERIMENTALOne dose given to all participants
ExperimentalEXPERIMENTALHIL-214 (1 dose at 4 months of age and 1 dose at 6 months of age) and routine childhood vaccines according to schedule.
PlaceboPLACEBO_COMPARATORPlacebo (1 dose at 4 months of age and 1 dose at 6 months of age) and routine childhood vaccines according to schedule.

Interventions

NameTypeDescription
HIL-214BIOLOGICALHIL-214
PlaceboBIOLOGICAL2 injections - given at 4 months and the second at 6 months of age.
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Eligibility Criteria

Age Range18 Years to 49 Years
SexALL
Healthy VolunteersYes
Study Sites2

Inclusion Criteria: * Male or female subjects aged 18 to 49 years, inclusive. * Individuals who are in good health at the time of entry into the trial as determined by medical history, physical examination (including vital signs) and clinical judgment of the investigator. * The individual signs and...

Countries:United StatesPanamaPuerto RicoJapan
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