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linezolid

Phase 3

Bacterial Infections | Small molecule | Infectious Disease |Pfizer, Inc.|Last Updated: Apr 30, 2012

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials2
Total Enrollment788

FDA Designations

No designations recorded

Clinical trial landscape

linezolid · 7 trials · 8 indications

Phase 3 3Phase 1 4
NCT00150332Linezolid for the Treatment of Infections Caused by Methicillin Resistant Staphylococcus Aureus in JapanInfections, Nosocomial
COMPLETED24 Analytics
NCT00037050Antibiotic Treatment for Infections of Short Term In-dwelling Vascular Catheters Due to Gram Positive BacteriaBacterial Infections
COMPLETED739 Analytics
NCT00035425Treatment of Neutropenic Patients With Fever Who Are Suspected to Have A Gram Positive InfectionFebrile Neutropenia
COMPLETED120 Analytics
PHASE3COMPLETED
Linezolid for the Treatment of Infections Caused by Methicillin Resistant Staphylococcus Aureus in Japan
Infections, NosocomialUnlock trial analytics
PHASE3COMPLETED
Antibiotic Treatment for Infections of Short Term In-dwelling Vascular Catheters Due to Gram Positive Bacteria
Bacterial InfectionsUnlock trial analytics
PHASE3COMPLETED
Treatment of Neutropenic Patients With Fever Who Are Suspected to Have A Gram Positive Infection
Febrile NeutropeniaUnlock trial analytics

Study Endpoints

Primary Endpoints

Resolution of infection at the time of completion of therapy
The empiric treatment of patients with complicated skin and skin structure infections (cSSSI) related to an indwelling catheter;
The empiric treatment of patients with gram-positive catheter-related bloodstream infections.
Clinical efficacy of linezolid when administered intravenously as compared to intravenously administered vancomycin in the empiric treatment of oncology patients with febrile neutropenia with suspected gram-positive infections.
7-28 days
Change from baseline in phagocytosis of gram-negative bacteria by neutrophils
Baseline, day 4 and day 5
Change from baseline in phagocytosis of gram-negative bacteria by monocytes
Baseline, day 4 and day 5
Change from baseline in interleukin-1 receptor antagonist secretion in response to lipopolysaccharide stimulation
Baseline, day 4 and day 5
Change from baseline in interleukin-1-beta secretion in response to lipopolysaccharide stimulation
Baseline, day 4 and day 5
Change from baseline in interleukin-6 secretion in response to lipopolysaccharide stimulation
Baseline, day 4 and day 5
Change from baseline in interleukin-8 secretion in response to lipopolysaccharide stimulation
Baseline, day 4 and day 5
Change from baseline in tumor necrosis factor alpha secretion in response to lipopolysaccharide stimulation
Baseline, day 4 and day 5
Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast)
0, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24, 36, and 48 hours post-dose

Area under the plasma concentration-time curve from time zero (pre-dose) to the time of the last measurable concentration (AUClast).

Maximum Observed Plasma Concentration (Cmax)
0, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24, 36, and 48 hours post-dose

Maximum observed plasma concentration within the dosing interval was directly obtained from the concentration-time data.

Cohort 1: Number of Subjects With Adverse Events (AEs) and Serious Adverse Events (SAEs)
From the time the subject had taken at least one dose of study treatment up to 5 weeks

All observed or volunteered AEs and SAEs regardless of treatment group or suspected causal relationship to the investigational product(s) were reported.

Cohort 2: Mean Time-Matched Difference in Time Corresponding to Beginning of Depolarization to Repolarization of the Ventricles, Corrected for Heart Rate Using Fridericia's Formula (QTcF Interval) Between Linezolid 600 mg and 1200 mg Compared to Placebo
0.5, 1, 2, 4, 8, 12, 24 hours post-dose

The time corresponding to the beginning of depolarization to repolarization of the ventricles (QT interval) was adjusted for ventricular rate (VR) using the QT and VR from each electrocardiogram by Fridericia's formula (QTcF = QT divided by cube root of VR in seconds). A measure of dispersion is not available.

To assess and compare pharmacokinetic parameters of a single dose 1-hour intravenous linezolid (Zyvox) at 600 mg in patients with major thermal injuries (>40% body area) and in healthy volunteers

Secondary Endpoints

Adverse events
Clinical efficacy of linezolid compared to vancomycin/oxacillin/dicloxacillin.2.Incidence of late metastatic sequelae associated with S. aureus infections in patients treated with linezolid
Microbiologic outcome
7-28 days
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
A.EXPERIMENTALPatients will be stratified according to the use of prophylactic antibiotics. Both groups may receive open-label gram-negative coverage with either ceftazidime, aztreonam, and/or aminoglycosides (gentamicin, tobramycin, amikacin). Subjects will receive study medication intravenously every 12 hours for 7 to 28 days.
B.EXPERIMENTAL -
Arm AACTIVE_COMPARATOR -
Arm BPLACEBO_COMPARATOR -
Group 1OTHERSubjects will accept Linezolid OS 600 MG first, after 4 days wash-out, then will accept Linezolid tablet 600 MG.
Group 2OTHERSubjects will accept Linezolid tablet 600 MG first, after 4 days wash-out, then will accept Linezolid OS 600 MG.
Cohort 1: PlaceboPLACEBO_COMPARATOR -
Cohort 1: 900 mg linezolidEXPERIMENTAL -
Cohort 1: 1200 mg linezolidEXPERIMENTAL -
Cohort 2: PlaceboPLACEBO_COMPARATOR -
Cohort 2: 600 mg linezolidEXPERIMENTAL -
Cohort 2: 1200 mg linezolidEXPERIMENTAL -
Cohort 2: 400 mg MoxifloxacinACTIVE_COMPARATOR -

Interventions

NameTypeDescription
linezolidDRUG -
VancomycinDRUG -
OxacillinDRUG -
DicloxacillinDRUG -
PlaceboDRUG500 mg oral placebo twice daily for 4.5 days
Linezolid 900 mgDRUGIntravenous, 900 mg linezolid, single dose
Linezolid 1200 mgDRUGIntravenous, 1200 mg linezolid, single dose
Linezolid 600 mgDRUGIntravenous, 600 mg linezolid, single dose
Moxifloxacin 400 mgDRUGOral, 400 mg moxifloxacin, single dose
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Eligibility Criteria

Age Range16 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites20

Inclusion Criteria: * infection due to methicillin-resistant Staphylococcus aureus Exclusion Criteria: * hypersensitivity to linezolid

Countries:JapanUnited StatesArgentinaBrazilChileColombiaFinlandMexicoPakistanPeruVenezuelaChinaSingaporeFrance
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