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Ceftazidime-avibactam

Phase 3

Complicated Intra-abdominal Infection | Small molecule | Infectious Disease |Pfizer, Inc.|Last Updated: Aug 9, 2018

Success Probability

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials1
Total Enrollment486

FDA Designations

No designations recorded

Clinical trial landscape

Ceftazidime-avibactam · 3 trials · 3 indications

Phase 3 1Phase 2 2
NCT01726023Compare Ceftazidime-Avibactam + Metronidazole vs Meropenem for Hospitalized Adults With Complicated Intra-Abd InfectionsComplicated Intra-abdominal Infection
COMPLETED486 Analytics
PHASE3COMPLETED
Compare Ceftazidime-Avibactam + Metronidazole vs Meropenem for Hospitalized Adults With Complicated Intra-Abd Infections
Complicated Intra-abdominal InfectionUnlock trial analytics

Study Endpoints

Primary Endpoints

The Proportion of Patients With Clinical Cure at the Test of Cure (TOC) Visit in the Clinically Evaluable (CE) Analysis Set.
At the test of cure visit (Day 28 to35)

The proportion of patients meeting the cure criteria: complete resolution or significant improvement of signs and symptoms of the index infection such that no further antibacterial therapy, drainage, or surgical intervention was necessary.

Percentage of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)
Baseline until the LFU visit (up to a maximum study duration of 50 days)

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged in-patient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent AEs were events between first dose of study drug and up to late follow-up (LFU) visit (20 to 36 days after last dose of study treatment \[IV or oral\]) that were absent before treatment or that worsened relative to pretreatment state. AEs included both SAE and non-SAE.

Percentage of Participants With Cephalosporin Class Effects and Additional Adverse Events (AEs)
Baseline until the LFU visit (up to a maximum study duration of 50 days)

Percentage of participants with Cephalosporin class effects (defined as adverse event of special interest (AEoSI) within the safety topics (ST) of hypersensitivity/anaphylaxis) and additional AEs (which included AEs of diarrhea, renal disorder, hematological disorder and liver disorder relevant to the cephalosporin class within the safety topics (ST) based on MedDRA 20.0) were reported in this outcome measure.

Change From Baseline in Pulse Rate at End of Intravenous Treatment (EOIV) Visit
Baseline, EOIV visit (anytime from Day 4 to 15)

EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Change From Baseline in Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at End of Intravenous Treatment (EOIV) Visit
Baseline, EOIV visit (anytime from Day 4 to 15)

EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Change From Baseline in Respiratory Rate at End of Intravenous Treatment (EOIV) Visit
Baseline, EOIV visit (anytime from Day 4 to 15)

EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Change From Baseline in Body Temperature at End of Intravenous Treatment (EOIV) Visit
Baseline, EOIV visit (anytime from Day 4 to 15)

EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Percentage of Participants With Abnormal Physical Examination Findings at End of Intravenous Treatment (EOIV) Visit
EOIV visit (anytime from Day 4 to 15)

Physical examination included an assessment of the following: general appearance, skin, head and neck (including ears, eyes, nose and throat), lymph nodes, thyroid, respiratory system, cardiovascular system, abdomen, musculoskeletal system (including spine and extremities), and neurological system. Participants with new or aggravated abnormal physical examination findings with regard to baseline findings were reported. Abnormality in physical examinations were based on blinded observer's discretion. EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Change From Baseline in Body Weight at End of Intravenous Treatment (EOIV) Visit
Baseline, EOIV visit (anytime from Day 4 to 15)

EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Percentage of Participants With Potentially Clinically Significant Abnormalities in Laboratory Parameters
Baseline until the LFU visit (up to a maximum study duration of 50 days)

Criteria for potentially clinically significant laboratory abnormalities: hematology (platelets: \<0.4\*lower limit of normal \[LLN\], \>2\*upper limit of normal \[ULN\], \>40% decrease from baseline \[DFB\],\>100% Increase from baseline \[IFB\]; Chemistry (Bicarbonate: \<0.7\*LLN, \>1.3\*ULN, \>50% DFB, \>30% IFB).

Percentage of Participants With Potentially Clinically Significant Abnormalities in Electrocardiogram (ECG) Parameters
Baseline until the EOIV visit (anytime from Day 4 to 15)

PCS criteria for abnormal value of ECG parameters: QT interval \>=450 milliseconds (msec); 480 msec; \>=500 msec; Increase from baseline (IFB) of \>=30 msec; \>=60 msec and \>90 msec; Decrease from baseline (DFB) of \>=30 msec; \>=60 msec and \>90 msec. QT interval using Bazett's correction (QTcB): \>=450 milliseconds (msec); 480 msec; \>=500 msec; Increase from baseline (IFB) of \>=30 msec; \>=60 msec and \>90 msec; DFB of \>=30 msec; \>=60 msec and \>90 msec. QT interval using Fridericia's correction (QTcF): \>=450 msec; 480 msec; \>=500 msec; IFB of \>=30 msec; \>=60 msec and \>90 msec; DFB of \>=30 msec; \>=60 msec and \>90 msec. EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Percentage of Participants With Creatinine Clearance (CrCl) at Day 7
Day 7

CrCl is a measure of glomerular filtration rate (GMFR), an index of kidney function. It is the volume of blood plasma that is cleared of creatinine by the kidneys per unit time. Percentage of participants with CrCl in the following categories were reported: \<30 mL/min/1.73 m\^2, \>=30 to \<50 mL/min/1.73 m\^2, \>=50 mL/min/1.73 m\^2 to \<80 mL/min/1.73 m\^2, and \>=80 mL/min/1.73 m\^2.

Percentage of Participants With Creatinine Clearance (CrCl) at End of Intravenous Treatment (EOIV) Visit
EOIV visit (anytime from Day 4 to 15)

CrCl is a measure of glomerular filtration rate (GMFR), an index of kidney function. It is the volume of blood plasma that is cleared of creatinine by the kidneys per unit time. Percentage of participants with CrCl in the following categories were reported: \<30 mL/min/1.73 m\^2, \>=30 to \<50 mL/min/1.73 m\^2, \>=50 mL/min/1.73 m\^2 to \<80 mL/min/1.73 m\^2, and \>=80 mL/min/1.73 m\^2. EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Percentage of Participants With Creatinine Clearance (CrCl) at Test of Cure (TOC) Visit
TOC visit (up to a maximum study duration of 50 days)

CrCl is a measure of glomerular filtration rate (GMFR), an index of kidney function. It is the volume of blood plasma that is cleared of creatinine by the kidneys per unit time. Percentage of participants with CrCl in the following categories were reported: \<30 mL/min/1.73 m\^2, \>=30 to \<50 mL/min/1.73 m\^2, \>=50 mL/min/1.73 m\^2 to \<80 mL/min/1.73 m\^2, and \>=80 mL/min/1.73 m\^2. TOC visit occurred within 8 to 15 days after last dose of any study drug (IV or oral).

Change From Baseline in Pulse Rate at End of Intravenous Therapy (EOIV) Visit
Baseline, EOIV visit (anytime from Day 4 up to 16)

EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Change From Baseline in Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at End of Intravenous Therapy (EOIV) Visit
Baseline, EOIV visit (anytime from Day 4 up to 16)

EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Change From Baseline in Respiratory Rate at End of Intravenous Therapy (EOIV) Visit
Baseline, EOIV visit (anytime from Day 4 up to 16)

EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Change From Baseline in Body Weight at End of Intravenous Therapy (EOIV) Visit
Baseline, EOIV visit (anytime from Day 4 up to 16)

EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Change From Baseline in Body Temperature at End of Intravenous Therapy (EOIV) Visit
Baseline, EOIV visit (anytime from Day 4 up to 16)

EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Percentage of Participants With Abnormal Physical Examination Findings at End of Intravenous Therapy (EOIV) Visit
EOIV visit (anytime from Day 4 up to 16)

Physical examination included an assessment of the following: general appearance, skin, head and neck (including ears, eyes, nose and throat), lymph nodes, thyroid, respiratory system, cardiovascular system, abdomen, musculoskeletal system (including spine and extremities), and neurological system. Participants with new or aggravated abnormal physical examination findings with regard to baseline findings were reported. Abnormality in physical examinations were based on blinded observer's discretion. EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Percentage of Participants With Electrocardiogram (ECG) Parameter QTcF: > 450, >480 and >500 Millisecond (ms)
Baseline until the EOIV visit (anytime from Day 4 to 16)

ECG parameters included maximum QT intervals using Fridericia's correction (QTcF). Maximum QTcF \>450 millisecond (ms); maximum QTcF \>480 ms; and maximum QTcF \>500 ms. EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Percentage of Participants With Creatinine Clearance (CrCl) at End of Intravenous Therapy (EOIV) Visit
EOIV visit (anytime from Day 4 up to 16)

CrCl is a measure of GMFR, an index of kidney function. It is the volume of blood plasma that is cleared of creatinine by the kidneys per unit time. Percentage of participants with CrCl in the following categories were reported: \<30 mL/min/1.73 m\^2, \>=30 to \<50 mL/min/1.73 m\^2, \>=50 mL/min/1.73 m\^2 to \<80 mL/min/1.73 m\^2, and \>=80 mL/min/1.73 m\^2. EOIV visit occurred within 24 hours after completion of last infusion of the study drug.

Percentage of Participants With Creatinine Clearance (CrCl) at Late Follow-up (LFU) Visit
LFU visit (up to a maximum study duration of 50 days)

CrCl is a measure of GMFR, an index of kidney function. It is the volume of blood plasma that is cleared of creatinine by the kidneys per unit time. Percentage of participants with CrCl in the following categories were reported: \<30 mL/min/1.73 m\^2, \>=30 to \<50 mL/min/1.73 m\^2, \>=50 mL/min/1.73 m\^2 to \<80 mL/min/1.73 m\^2, and \>=80 mL/min/1.73 m\^2. LFU visit occurred within 20 to 35 days after last dose of study treatment (IV or oral).

Secondary Endpoints

The Proportion of Patients With Clinical Cure at the End of Treatment (EOT) Visit in the Microbiologically Evaluable (ME) Analysis Set.
At the end of treatment (EOT) (within 24 hours after last IV dose)
The Proportion of Patients With Clinical Cure at the Test of Cure (TOC) Visit in the Microbiologically Evaluable (ME) Analysis Set.
At the test of cure (TOC) (Day 28 to 35)
The Proportion of Patients With Clinical Cure at the Late Follow up (LFU) Visit in the Microbiologically Evaluable (ME) Analysis Set.
At the late follow up (LFU) (Day 42 to 49)
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Ceftazidime-Avibactam plus metronidazoleEXPERIMENTAL -
MeropenemACTIVE_COMPARATOR -
ceftazidime-avibactam (CAZ-AVI)EXPERIMENTALCAZ-AVI to be administered every 8 hours as a 2-hour infusion (CAZ-AVI dose and frequency of IV administration will depend upon body weight and renal function)
CefepimeACTIVE_COMPARATORPatients randomised to receive cefepime should receive the dose, schedule and infusion duration as recommended in the local prescribing information or as prescribed by the investigator. The maximum dose of cefepime in any single infusion should not exceed 2000 mg
CAZ-AVI and metronidazoleEXPERIMENTALCAZ-AVI to be administered every 8 hours as a 2 hour infusion (CAZ-AVI dose and frequency of IV administration will depend upon body weight and renal function) followed by metronidazole (no later than 30 minutes after CAZ-AVI infusion ) to be administered every 8 hours as 20 to 30 minutes infusion

Interventions

NameTypeDescription
Ceftazidime-avibactamDRUGCeftazidime-Avibactam powder for concentrate for solution for infusion 2000 mg/500 mg
metronidazoleDRUGMetronidazole 500mg/100ml solution for infusion
MeropenemDRUGMeropenem powder for solution for infusion 1000mg
Ceftazidime -avibactamDRUGPatients randomised (3:1) to the CAZ-AVI or cefepime treatment
CefepimeDRUGPatients randomised (3:1) to the CAZ-AVI or cefepime treatment
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Eligibility Criteria

Age Range18 Years to 90 Years
SexALL
Healthy VolunteersNo
Study Sites30

Inclusion Criteria: * Patient must be 18 to 90 years of age, inclusive, * Female patients can participate if they are surgically sterilized or postmenopausal for at least 1 year or her sexual partner has had a vasectomy * Female of childbearing potential has had normal menstrual periods for 3 month...

Countries:ChinaSouth KoreaVietnamUnited StatesCzechiaGreeceHungaryPolandRomaniaRussiaTaiwanTurkey (Türkiye)Spain
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Frequently asked questions about Ceftazidime-avibactam

What is Ceftazidime-Avibactam used for?

Ceftazidime-Avibactam is an investigational small molecule being developed for complicated urinary tract infections (cUTI) including acute pyelonephritis, and complicated intra-abdominal infections. It is a combination antibiotic studied in hospitalized adults and children with these serious bacterial infections.

Who makes Ceftazidime-Avibactam?

Ceftazidime-Avibactam is being developed by Pfizer, Inc. (NYSE: PFE). The company is conducting clinical trials of the drug for complicated urinary tract infections and complicated intra-abdominal infections.

What phase is Ceftazidime-Avibactam in?

Ceftazidime-Avibactam is in Phase 3 clinical development. It is investigational and not yet approved. Two Phase 3 trials have been completed, along with a Phase 2 pediatric study, all with results reported.

What clinical trials is Ceftazidime-Avibactam in?

Ceftazidime-Avibactam has completed two Phase 3 trials: NCT01595438 and NCT01599806, both comparing it to doripenem followed by oral therapy in hospitalized adults with complicated UTIs. A third Phase 3 trial, NCT01644643, studied the drug for infections due to ceftazidime-resistant pathogens. A Phase 2 trial, NCT02497781, evaluated it in children with cUTIs.

How does Ceftazidime-Avibactam work?

Ceftazidime-Avibactam is a combination of ceftazidime, a cephalosporin antibiotic, and avibactam, a beta-lactamase inhibitor. Avibactam protects ceftazidime from degradation by certain beta-lactamase enzymes, restoring its activity against resistant gram-negative bacteria.

Is Ceftazidime-Avibactam the same as CAZ-AVI?

Yes, Ceftazidime-Avibactam is also known as CAZ-AVI. In clinical trials, it is referred to by both names, including in the pediatric study NCT02497781, which evaluates the safety and efficacy of CAZ-AVI compared with cefepime.