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PG4 vaccine in Buffer 1 with low dose PA-001

Phase 1

Streptococcus Pneumoniae | Monoclonal antibody | Infectious Disease |Pfizer, Inc.|Last Updated: Jun 22, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials1
Total Enrollment380

FDA Designations

No designations recorded

Clinical trial landscape

PG4 vaccine in Buffer 1 with low dose PA-001 · 1 trial · 1 indication

Phase 1 1
NCT07086677A Study to Learn About How a New Pneumococcal Vaccine Works in AdultsStreptococcus Pneumoniae
ACTIVE NOT_RECRUITING380 Analytics
PHASE1ACTIVE NOT_RECRUITING
A Study to Learn About How a New Pneumococcal Vaccine Works in Adults
Streptococcus PneumoniaeUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of participants reporting prespecified local reactions after each dose.
Within 7 days after each study intervention.

Prespecified local reactions (redness, swelling, and pain at the injection site) occurring within 7 days of each dose administered in the study.

Percentage of participants reporting prespecified systemic reactions after each dose.
Within 7 days after each study intervention.

Prespecified systemic reactions (fever, vomiting, diarrhea, headache, fatigue, muscle pain, and joint pain) occurring within 7 days of each dose administered in the study.

Percentage of participants reporting adverse events.
From signing of the ICD to 1 month after last study intervention.

Adverse Events (AEs) occurring from Dose 1 through 1 month after the last vaccination

Percentage of participants reporting serious adverse events.
From signing of the ICD to 6 months after the last study intervention.

Serious Adverse Events (SAEs) occurring from Dose 1 through 6 months after the last vaccination.

Percentage of participants with abnormal hematology and chemistry laboratory values.
Within 2 weeks after each study intervention.

Any abnormal hematology or chemistry laboratory values as compared to baseline within 2 weeks after each study intervention.

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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
PG4 vaccine with low dose adjuvant PA-001; dose schedule 1EXPERIMENTAL -
PG4 vaccine with low dose adjuvant PA-001; dose schedule 2EXPERIMENTAL -
PG4 vaccine with low dose adjuvant PA-002; dose schedule 1EXPERIMENTAL -
PG4 vaccine with low dose adjuvant PA-002; dose schedule 2EXPERIMENTAL -
PG4 vaccine with high dose adjuvant PA-001; dose schedule 1EXPERIMENTAL -
PG4 vaccine with high dose adjuvant PA-001; dose schedule 2EXPERIMENTAL -
PG4 vaccine with high dose adjuvant PA-002; dose schedule 1EXPERIMENTAL -
PG4 vaccine with high dose adjuvant PA-002; dose schedule 2EXPERIMENTAL -
PG4 vaccine; dose schedule 1ACTIVE_COMPARATOR -
PG4 vaccine; dose schedule 2ACTIVE_COMPARATOR -
20vPnC; dose schedule 1ACTIVE_COMPARATOR -
20vPnC; dose schedule 2ACTIVE_COMPARATOR -

Interventions

NameTypeDescription
PG4 vaccine in Buffer 1 with low dose PA-001BIOLOGICALMultivalent pneumococcal conjugate vaccine
PG4 in Buffer 1 with low dose PA-002BIOLOGICALMultivalent pneumococcal conjugate vaccine
PG4 in Buffer 1 with high dose PA-001BIOLOGICALMultivalent pneumococcal conjugate vaccine
PG4 vaccine in Buffer 1 with high dose PA-002BIOLOGICALMultivalent pneumococcal conjugate vaccine
PG4 vaccine in Buffer 2BIOLOGICALMultivalent pneumococcal conjugate vaccine
20-valent pneumococcal conjugate vaccineBIOLOGICAL(20vPnC)
Saline injectionBIOLOGICALPlacebo
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Eligibility Criteria

Age Range65 Years to 84 Years
SexALL
Healthy VolunteersYes
Study Sites20

Key Inclusion Criteria: * Healthy participants who are determined by medical history, physical examination (if required), and clinical judgment of the investigator to be eligible for inclusion in the study. * Participants either with no history of ever receiving a pneumococcal vaccine or who have r...

Countries:United States
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Recent Changes (Last 90 Days)

LOWJun 22, 2026NCT07086677lastUpdatePostDate: changed
LOWJun 22, 2026NCT07086677lastUpdatePostDate: changed

Frequently asked questions about PG4 vaccine in Buffer 1 with low dose PA-001

What is the PG4 vaccine in Buffer 1 with low dose PA-001 used for?

The PG4 vaccine in Buffer 1 with low dose PA-001 is an investigational vaccine being studied for the prevention of Streptococcus pneumoniae infection. It is currently in Phase 1 clinical development for this infectious disease indication.

Who makes the PG4 vaccine in Buffer 1 with low dose PA-001?

The PG4 vaccine in Buffer 1 with low dose PA-001 is being developed by Pfizer, Inc. (NYSE: PFE). The company is conducting a Phase 1 clinical trial to evaluate this investigational pneumococcal vaccine.

What phase is the PG4 vaccine in Buffer 1 with low dose PA-001 in?

The PG4 vaccine in Buffer 1 with low dose PA-001 is in Phase 1 clinical development. It is an investigational vaccine and has not been approved by regulatory authorities. The ongoing Phase 1 trial is active but not recruiting participants.

What clinical trials is the PG4 vaccine in Buffer 1 with low dose PA-001 in?

The PG4 vaccine in Buffer 1 with low dose PA-001 is being evaluated in a Phase 1 clinical trial with the identifier NCT07086677. This randomized, double-blind, active-controlled study is enrolling 380 adults aged 65 years and older in the United States.

Is the PG4 vaccine in Buffer 1 with low dose PA-001 a monoclonal antibody?

No, the PG4 vaccine in Buffer 1 with low dose PA-001 is classified as a vaccine, not a monoclonal antibody. It is being developed to prevent Streptococcus pneumoniae infection and is currently in Phase 1 clinical trials.