Completed

A Phase 3, Multicenter, Randomized, Double-Blind, Comparative Study Of The Efficacy And Safety Of Tigecycline Vs Imipenem/Cilastatin For The Treatment Of Subjects With Nosocomial Pneumonia

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What is being tested

Data Collection

Who is being recruted

Bacterial Infections and Mycoses
+5

+ Bacterial Infections
+ Infections
From 18 to 70 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Phase 3
Interventional
Study Start: July 2003
See protocol details

Summary

Principal SponsorWyeth is now a wholly owned subsidiary of Pfizer
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner
Study start date: July 1, 2003Actual date on which the first participant was enrolled.

To compare the efficacy and safety of the tigecycline regimen with that of the imipenem/cilastatin regimen in subjects with nosocomial pneumonia.

Official TitleA Phase 3, Multicenter, Randomized, Double-Blind, Comparative Study Of The Efficacy And Safety Of Tigecycline Vs Imipenem/Cilastatin For The Treatment Of Subjects With Nosocomial Pneumonia 
NCT00080496
Principal SponsorWyeth is now a wholly owned subsidiary of Pfizer
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details
430 patients to be enrolledTotal number of participants that the clinical trial aims to recruit.
Treatment Study
These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.

How participants are assigned to different groups/arms
In this clinical study, participants are placed into groups randomly, like flipping a coin. This ensures that the study is fair and unbiased, making the results more reliable. By assigning participants by chance, researchers can better compare treatments without external influences.

Other Ways to Assign Participants
Non-randomized allocation: Participants are assigned based on specific factors, such as their medical condition or a doctor's decision.
None (Single-arm trial): If the study has only one group, all participants receive the same treatment, and no allocation is needed.

How treatments are given to participants
Participants are divided into different groups, each receiving a specific treatment at the same time. This helps researchers compare how well different treatments work against each other.

Other Ways to Assign Treatments
Single-group assignment: Everyone gets the same treatment.
Cross-over assignment: Participants switch between treatments during the study.
Factorial assignment: Participants receive different combinations of treatments.
Sequential assignment: Participants receive treatments one after another in a specific order, possibly based on individual responses.
Other assignment: Treatment assignment does not follow a standard or predefined design.

How the interventions assigned to participants is kept confidential
Neither participants nor researchers know who is receiving which treatment. This is the most rigorous way to reduce bias, ensuring that expectations do not influence the results.

Other Ways to Mask Information
Open-label: Everyone knows which treatment is being given.
Single-blind: Participants do not know which treatment they are receiving, but researchers do.
Triple-blind: Participants, researchers, and outcome assessors do not know which treatment is given.
Quadruple-blind: Participants, researchers, outcome assessors, and care providers all do not know which treatment is given.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria
Any sexBiological sex of participants that are eligible to enroll.
From 18 to 70 YearsRange of ages for which participants are eligible to join.
Healthy volunteers not allowedIf individuals who are healthy and do not have the condition being studied can participate.
Conditions
Pathology
Bacterial Infections and Mycoses
Bacterial Infections
Infections
Lung Diseases
Pneumonia
Respiratory Tract Diseases
Respiratory Tract Infections
Pneumonia, Bacterial
Criteria

Inclusion Criteria: * Male or female subjects over 18 years of age. Bulgaria Only: Male or female subjects over 18 years of age and under 70 years of age. * Subjects known or suspected to have acute hospital-acquired pneumonia. Exclusion Criteria: * Presence of any of the following pulmonary conditions: cystic fibrosis; pulmonary malignancy (either primary or metastatic); known bronchial-obstructive or post obstructive pneumonia; pulmonary abscess; empyema; known or suspected active tuberculosis; bronchiectasis; sarcoidosis; known or suspected pulmonary infection caused by Pneumocystis carinii, mycobacteria, fungi, parasites, or viruses (Subjects with COPD are not excluded) * Suspected or known Legionella infection * Concurrent hemodialysis, hemofiltration, peritoneal dialysis, or plasmapheresis

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Study Objectives
Study Objectives
Primary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
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