Evaluation of a Single Vaccination With One of Three Ascending Dose Levels of a 4-Antigen Staphylococcus Aureus Vaccine (SA4Ag) in Healthy Adults Aged 18 to <65 Years

NCT ID: NCT01364571

Last Updated: 2019-03-04

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1

Total Enrollment

456 participants

Study Classification

INTERVENTIONAL

Study Start Date

2011-08-31

Study Completion Date

2013-01-31

Brief Summary

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This is a first-in-human (Phase 1) and Phase 2 study of a single vaccination with one of three dose levels of an investigational vaccine against Staphylococcus aureus (SA4Ag). The main goal of the study is to determine how safe and well tolerated the vaccine is as well as to describe the immune response elicited by the vaccine in healthy adults aged 18 to \<65 years. In addition, the study aims to assess the effect of the SA4Ag vaccine on the presence of the Staphylococcus aureus on the skin and within the nose, throat and perineum of healthy adults aged 18 to \<65 years.

Detailed Description

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Conditions

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Staphylococcal Infections

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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1

SA4Ag vaccine low dose

Group Type EXPERIMENTAL

SA4Ag vaccine low dose

Intervention Type BIOLOGICAL

Subjects receive 1 intramuscular injection (0.5 mL) of the low dose level of the SA4Ag vaccine.

Blood draw

Intervention Type PROCEDURE

Blood for hematology, coagulation and blood chemistry will be collected at a minimum of 3 timepoints from Phase 1 subjects. Blood for immunogenicity will be collected from all subjects at various timepoints.

Colonization swab sample

Intervention Type PROCEDURE

Colonization swabs will be collected from all subjects at various time points throughout the study.

2

SA4Ag vaccine mid dose

Group Type EXPERIMENTAL

SA4Ag vaccine mid dose

Intervention Type BIOLOGICAL

Subjects receive 1 intramuscular injection (0.5 mL) of the mid dose level of the SA4Ag vaccine.

Blood sample

Intervention Type PROCEDURE

Blood for hematology, coagulation and blood chemistry will be collected at a minimum of 3 timepoints from Phase 1 subjects. Blood for immunogenicity will be collected from all subjects at various timepoints.

Colonization swab sample

Intervention Type PROCEDURE

Colonization swabs will be collected from all subjects at various time points throughout the study.

3

SA4Ag vaccine high dose

Group Type EXPERIMENTAL

SA4Ag vaccine high dose

Intervention Type BIOLOGICAL

Subjects receive 1 intramuscular injection (0.5 mL) of the high dose level of the SA4Ag vaccine.

Blood draw

Intervention Type PROCEDURE

Blood for hematology, coagulation and blood chemistry will be collected at a minimum of 3 timepoints from Phase 1 subjects. Blood for immunogenicity will be collected from all subjects at various timepoints.

Colonization swab sample

Intervention Type PROCEDURE

Colonization swabs will be collected from all subjects at various time points throughout the study.

4

Placebo

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type BIOLOGICAL

Subjects receive one intramuscular injection (0.5 mL) of commercially available normal saline.

Blood draw

Intervention Type PROCEDURE

Blood for hematology, coagulation and blood chemistry will be collected at a minimum of 3 timepoints from Phase 1 subjects. Blood for immunogenicity will be collected from all subjects at various timepoints.

Colonization swab sample

Intervention Type PROCEDURE

Colonization swabs will be collected from all subjects at various time points throughout the study.

Interventions

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SA4Ag vaccine low dose

Subjects receive 1 intramuscular injection (0.5 mL) of the low dose level of the SA4Ag vaccine.

Intervention Type BIOLOGICAL

Blood draw

Blood for hematology, coagulation and blood chemistry will be collected at a minimum of 3 timepoints from Phase 1 subjects. Blood for immunogenicity will be collected from all subjects at various timepoints.

Intervention Type PROCEDURE

Colonization swab sample

Colonization swabs will be collected from all subjects at various time points throughout the study.

Intervention Type PROCEDURE

SA4Ag vaccine mid dose

Subjects receive 1 intramuscular injection (0.5 mL) of the mid dose level of the SA4Ag vaccine.

Intervention Type BIOLOGICAL

Blood sample

Blood for hematology, coagulation and blood chemistry will be collected at a minimum of 3 timepoints from Phase 1 subjects. Blood for immunogenicity will be collected from all subjects at various timepoints.

Intervention Type PROCEDURE

Colonization swab sample

Colonization swabs will be collected from all subjects at various time points throughout the study.

Intervention Type PROCEDURE

SA4Ag vaccine high dose

Subjects receive 1 intramuscular injection (0.5 mL) of the high dose level of the SA4Ag vaccine.

Intervention Type BIOLOGICAL

Blood draw

Blood for hematology, coagulation and blood chemistry will be collected at a minimum of 3 timepoints from Phase 1 subjects. Blood for immunogenicity will be collected from all subjects at various timepoints.

Intervention Type PROCEDURE

Colonization swab sample

Colonization swabs will be collected from all subjects at various time points throughout the study.

Intervention Type PROCEDURE

Placebo

Subjects receive one intramuscular injection (0.5 mL) of commercially available normal saline.

Intervention Type BIOLOGICAL

Blood draw

Blood for hematology, coagulation and blood chemistry will be collected at a minimum of 3 timepoints from Phase 1 subjects. Blood for immunogenicity will be collected from all subjects at various timepoints.

Intervention Type PROCEDURE

Colonization swab sample

Colonization swabs will be collected from all subjects at various time points throughout the study.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Healthy adults aged 18 to \<65 years at enrollment, as determined by medical history, physical examination, and the clinical judgment of the investigator to be eligible for the study. Subjects with preexisting chronic medical conditions determined to be stable may be included.
* Availability for the entire duration of the study, and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures including completion of the electronic diary (e-diary) from Day 1 to Day 14 following vaccination(s).
* Ability to be contacted by telephone during study participation.
* All male and female subjects who are biologically capable of having children must agree and commit to the use of a reliable method of birth control for the duration of the study.

Exclusion Criteria

* Unstable chronic medical condition or disease requiring significant change in therapy or hospitalization within 3 months before receipt of study vaccine.
* Serious chronic medical disorders and any other disorder that in the investigator's opinion precludes the subject from participating in the study
* Donation of blood volume of 250 mL or greater (excluding protocol-required blood collection), or donation of plasma within 3 months prior to enrollment.
* Bleeding condition associated with prolonged bleeding time that may contraindicate intramuscular injection or blood draw including subjects taking anticoagulant, antiplatelet and/or antithrombotic agents except for low-dose daily aspirin within 30 days before enrollment through 1 month post-vaccination.
* Any contraindication to vaccination or vaccine components.
* Immunocompromised persons and subjects currently on immunosuppressive therapy or with a history of immunosuppressive therapy, including chemotherapy agents or long term systemic corticosteroids.
* Previous administration of S. aureus vaccination.
* Any infection proven or suspected to be caused by S. aureus within 6 months preceding study vaccination.
* Receipt of blood products or immunoglobulins (including monoclonal antibodies) within 12 months before enrollment through conclusion of the study.
* Participation in other investigational or interventional studies within 30 days before the current study begins and/or during study participation.
* Subjects who are investigational site staff members or subjects who are immediate family members (1st degree relatives) of investigational site staff members or Pfizer employees directly involved in the conduct of the trial.
* Residence in a nursing home or long-term care facility or requirement for semiskilled nursing care.
* For Phase 1 subjects only, any abnormality in screening hematology, coagulation and/or blood chemistry laboratory values.
* Women who are pregnant (as determined by urine pregnancy test) or breastfeeding.
* Other severe acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the subject inappropriate for entry into this study.
Minimum Eligible Age

18 Years

Maximum Eligible Age

64 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Pfizer

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Pfizer CT.gov Call Center

Role: STUDY_DIRECTOR

Pfizer

Locations

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Broward Research Group

Hollywood, Florida, United States

Site Status

Miami Research Associates

South Miami, Florida, United States

Site Status

Vince and Associates Clinical Research

Overland Park, Kansas, United States

Site Status

Kentucky Pediatric/Adult Research

Bardstown, Kentucky, United States

Site Status

SNBL Clinical Pharmacology Center, Inc.

Baltimore, Maryland, United States

Site Status

Prism Research

Saint Paul, Minnesota, United States

Site Status

Buffalo Clinical Research Center, LLC

Buffalo, New York, United States

Site Status

PMG Research of Raleigh, LLC d/b/a PMG Research of Cary

Cary, North Carolina, United States

Site Status

Cincinnati Children's Hospital Medical Center

Cincinnati, Ohio, United States

Site Status

Cincinnati Children's Hospital Medical Center

Cincinnati, Ohio, United States

Site Status

New Orleans Center for Clinical Research

Knoxville, Tennessee, United States

Site Status

Volunteer Research Group

Knoxville, Tennessee, United States

Site Status

Vanderbilt University Medical Center

Nashville, Tennessee, United States

Site Status

Benchmark Research

Austin, Texas, United States

Site Status

Roberta Braun, M.D.

Austin, Texas, United States

Site Status

Texas Center for Drug Development, Inc.

Houston, Texas, United States

Site Status

Countries

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United States

References

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Creech CB, Frenck RW, Fiquet A, Feldman R, Kankam MK, Pathirana S, Baber J, Radley D, Cooper D, Eiden J, Gruber WC, Jansen KU, Anderson AS, Gurtman A. Persistence of Immune Responses Through 36 Months in Healthy Adults After Vaccination With a Novel Staphylococcus aureus 4-Antigen Vaccine (SA4Ag). Open Forum Infect Dis. 2019 Dec 24;7(1):ofz532. doi: 10.1093/ofid/ofz532. eCollection 2020 Jan.

Reference Type DERIVED
PMID: 31993453 (View on PubMed)

Frenck RW Jr, Creech CB, Sheldon EA, Seiden DJ, Kankam MK, Baber J, Zito E, Hubler R, Eiden J, Severs JM, Sebastian S, Nanra J, Jansen KU, Gruber WC, Anderson AS, Girgenti D. Safety, tolerability, and immunogenicity of a 4-antigen Staphylococcus aureus vaccine (SA4Ag): Results from a first-in-human randomised, placebo-controlled phase 1/2 study. Vaccine. 2017 Jan 5;35(2):375-384. doi: 10.1016/j.vaccine.2016.11.010. Epub 2016 Dec 1.

Reference Type DERIVED
PMID: 27916408 (View on PubMed)

Other Identifiers

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6123K1-1005

Identifier Type: OTHER

Identifier Source: secondary_id

B3451001

Identifier Type: -

Identifier Source: org_study_id

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