A Study To Investigate A Clostridium Difficile Vaccine In Healthy Adults Aged 50 to 85 Years, Who Will Each Receive 3 Doses Of Vaccine.

NCT ID: NCT02117570

Last Updated: 2017-01-30

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

185 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-07-31

Study Completion Date

2015-12-31

Brief Summary

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This study will investigate a Clostridium difficile vaccine in healthy adults aged 50 to 85 years, who will each receive 3 doses of vaccine. The study will assess the safety and tolerability of the vaccine, and also look at the subjects' immune response to the vaccine.

Detailed Description

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Conditions

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Clostridium Difficile Associated Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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High dose of C. difficile vaccine

Group Type EXPERIMENTAL

Clostridium difficile vaccine

Intervention Type BIOLOGICAL

0.5 mL intramuscular injection on day 1, day 8, and day 30.

Low dose of C. difficile vaccine

Group Type EXPERIMENTAL

Clostridium difficile vaccine

Intervention Type BIOLOGICAL

0.5 mL intramuscular injection on day 1, day 8, and day 30.

Placebo

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type BIOLOGICAL

Placebo (0.9 percent saline) given as a 0.5 mL intramuscular injection on day 1, day 8, and day 30.

Interventions

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Clostridium difficile vaccine

0.5 mL intramuscular injection on day 1, day 8, and day 30.

Intervention Type BIOLOGICAL

Clostridium difficile vaccine

0.5 mL intramuscular injection on day 1, day 8, and day 30.

Intervention Type BIOLOGICAL

Placebo

Placebo (0.9 percent saline) given as a 0.5 mL intramuscular injection on day 1, day 8, and day 30.

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

Healthy male and female subjects aged 50 to 85 years

Exclusion Criteria

Proven or suspected prior episode of Clostridium difficile associated diarrhea.

Unstable chronic medical condition or disease requiring significant change in therapy or hospitalization for worsening disease within 8 weeks before receipt of study vaccine.

Any contraindication to vaccination or vaccine components, including previous anaphylactic reaction to any vaccine or vaccine-related components.
Minimum Eligible Age

50 Years

Maximum Eligible Age

85 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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Avail Clinical Research, LLC

DeLand, Florida, United States

Site Status

Meridian Clinical Research

Savannah, Georgia, United States

Site Status

Clinical Research Atlanta

Stockbridge, Georgia, United States

Site Status

Meridian Clinical Research

Norfolk, Nebraska, United States

Site Status

Meridian Clinical Research, LLC

Omaha, Nebraska, United States

Site Status

Clinical Research Center of Nevada, LLC

Las Vegas, Nevada, United States

Site Status

PMG Research of Charlotte

Charlotte, North Carolina, United States

Site Status

PMG Research of Wilmington, LLC

Wilmington, North Carolina, United States

Site Status

PMG Research of Winston-Salem

Winston-Salem, North Carolina, United States

Site Status

Benchmark Research

Austin, Texas, United States

Site Status

Benchmark Research

San Angelo, Texas, United States

Site Status

Clinical Trials of Texas, Inc.

San Antonio, Texas, United States

Site Status

Countries

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United States

Other Identifiers

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2013-004764-58

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

B5091003

Identifier Type: -

Identifier Source: org_study_id

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