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Comparative Study To Determine The Efficacy, Safety, And Tolerability Of Ceftolozane-Tazobactam

An Investigator Initiated, Phase II Single-Center, Randomized, Open-Label, Prospective, Comparative Study to Determine the Efficacy, Safety, and Tolerability of Ceftolozane-Tazobactam Plus Vancomycin, Linezolid Versus Standard of Care Plus Vancomycin, Linezolid as Empiric Therapy in Febrile Neutropenic Adults With Cancer

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03485950
Enrollment
100
Registered
2018-04-03
Start date
2018-05-16
Completion date
2022-02-16
Last updated
2022-03-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Other Infectious Diseases

Keywords

Other infectious diseases, Febrile neutropenic adults with cancer, Ceftolozane-Tazobactam, Cefepime, Meropenem, Piperacillin/Tazobactam

Brief summary

The goal of this clinical research study is to learn if the study drug ceftolozane-tazobactam is more effective in controlling febrile neutropenia (fever and low white blood cell counts) than using approved antibiotics in patients with cancer. The safety of ceftolozane-tazobactam will also be studied. This is an investigational study. Ceftolozane-tazobactam is FDA approved and commercially available to treat certain types of infections. It is not approved for the treatment of febrile neutropenia, either by itself or in combination with other antibiotics. Its use to treat febrile neutropenia is investigational. All other antibiotics given on this study are FDA approved and commercially available for the treatment of infections. However, only cefepime is specifically FDA approved to treat febrile neutropenia. The study doctor can explain how the study drugs are designed to work. Up to 100 participants will take part in this study. All will be enrolled at MD Anderson.

Detailed description

Study Groups and Study Drug Administration: If participant is found to be eligible to take part in this study and participant agrees, participant will be randomly assigned (as in the flip of a coin) to either receive either the study drug (Group 1) or a standard treatment antibiotic (Group 2). This is done because no one knows if one study group is better, the same, or worse than the other group. Both participant and the study doctor will know what participant is receiving. If participant is in Group 1, participant will receive ceftolozane-tazobactam by vein over 1 hour every 8 hours. If participant is in Group 2, participant will receive a standard treatment antibiotic. This may include one of the following 3 options: cefepime by vein over about 30 minutes every 8 hours. meropenem by vein over about 30 minutes every 8 hours. piperacillin/tazobactam by vein over about 1 hour every 6 hours. Participant will receive the study drugs by vein for at least 3 days. After 3 days, if the study doctor thinks it is in participant's best interest and participant is eligible, participant may switch to receiving a different antibiotic either by mouth or by vein. The study doctor will tell participant more about what antibiotic participant may begin to receive, how it is administered, and its possible risks. If participant begins taking the study drugs by mouth, the study doctor or study staff will tell participant how and when to take each drug. If the doctor thinks it is needed, participant will be given additional standard drugs to help control the infection. Participant may ask the study staff for information about how the drugs are given and their risks. Length of Study: Participant may receive the study drugs for up to 14 days. Participant will no longer be able to receive the study drugs if the disease gets worse, if intolerable side effects occur, if participant needs treatment that is not allowed on this study, or if participant is unable to follow study directions. Participation on this study will be over after the late follow-up visit. Study Visits: Participant will have the following tests/procedures while participant is in the hospital. If participant begins to take the study drugs by mouth, participant will no longer have these study visits. Each day for up to 2 weeks, if the doctor thinks it is needed, blood (about 1 tablespoon) or urine will be collected for routine tests. Every 2 days for up to 2 weeks, blood (about 1 tablespoon) will be drawn to check for infection. Participant will stop having these blood draws when there is no longer a sign of infection and participant does not have a fever. Twice each week for up to 2 weeks, participant will have a physical exam. Follow-Up: Within 72 hours (3 days) after participant's last dose of participant's assigned study treatment and before starting the second antibiotic therapy (if applicable): Participant will have a physical exam. Blood (about 1 tablespoon) and urine will be collected for routine tests. If participant tested positive for infection at the beginning of the study, blood (about 1 tablespoon) will be drawn to check for infection. The study doctor will tell participant if participant will have this blood draw. About 21-28 days (3-4 weeks) after participant's first dose of study drug, participant will return to MD Anderson for the following tests/procedures: Participant will have a physical exam. If participant tested positive for infection at the beginning of the study, blood (about 1 tablespoon) will be drawn to check for infection. The study doctor will tell participant if participant will have this blood draw. If participant can become pregnant, blood (about 1 teaspoon) will be drawn for a pregnancy test. About 35-42 days (5-6 weeks) after participant's first dose of study drug, a member of the study staff will call participant to ask about any new drugs participant may have started and if participant is having any side effects. If participant is called, it should last about 10 minutes. If the doctor or study staff thinks it is needed, participant will be asked to come back to the clinic for the following tests/procedures: Participant will have a physical exam. If the doctor thinks it is needed, blood (about 1 tablespoon) will be drawn to check for infection. At any of these follow-up visits, if participant's doctor thinks it is needed, participant will have a chest x-ray or CT scan to check participant's lungs.

Interventions

DRUGCefepime

Given IV

Given IV

OTHERLaboratory Biomarker Analysis

Correlative studies

DRUGMeropenem

Given IV

Given IV

Sponsors

Merck Sharp & Dohme LLC
CollaboratorINDUSTRY
National Cancer Institute (NCI)
CollaboratorNIH
M.D. Anderson Cancer Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Has provided written informed consent, and has the willingness and ability to comply with all study procedures * Patients with neutropenic fever who have existing malignancy or have undergone hematopoietic stem cell transplantation; neutropenic fever is defined as the presence of neutropenia defined by: 1) absolute neutrophil count (ANC) \< 500 cells/mm\^3 or has an ANC that is expected to decrease to \< 500 cells/mm\^3 within 48 hours of trial entry and fever defined as: 2) single oral temperature measurement of \> 101 degree Fahrenheit (F) (38.3 degree Celsius \[C\]) or a temperature of \> 100.4 degree F (38.0 degree C) sustained over a 1-hour period * Requires hospitalization for IV empiric antibiotic therapy * If female: not breastfeeding; agrees to not attempt to become pregnant during the study; is surgically sterile or at least 2-years postmenopausal, or if of childbearing potential, has negative screening serum pregnancy test (if serum pregnancy test results are not available at the time of enrollment, a negative urine pregnancy test is required within 24 hours.); if of childbearing potential (including being \< 2 years postmenopausal), is willing to practice sexual abstinence or use an effective dual form of contraception with her partner (eg, 2 barrier methods, barrier method plus hormonal method) during treatment and for ≥ 28 days after the last dose of any study therapy (IV or oral)

Exclusion criteria

* History of any hypersensitivity or allergic reaction to any cephalosporin antibiotic or tazobactam * Fever suspected to be caused by a noninfectious cause (eg, fever related to drug or blood product administration) * Confirmed fungal infection (eg, Pneumocystis jirovecii etiology in patients with pneumonia) that justifies adding additional empiric antimicrobial therapy (eg, antifungals) * Confirmed viral infection that justifies adding additional empiric antiviral therapy (eg, ganciclovir, foscarnet) * Known acute viral hepatitis * Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) level \> 5 times the upper limit of normal (x ULN); patients with values \> 3 x ULN and \< 5 x ULN are eligible if the value is acute and directly related to the infectious process being treated * Total bilirubin \> 3 x ULN unless isolated hyperbilirubinemia is directly related to the acute infection or due to known Gilbert disease; manifestations of end-stage liver disease, such as ascites or hepatic encephalopathy * Known to be human immunodeficiency virus positive * Severely impaired renal function, defined as creatinine clearance (CrCl) =\< 30 mL/min estimated by the Cockcroft-Gault formula * Expected requirement for hemodialysis while on study therapy * Received \> 24 hours of IV antibacterial therapy (with study drugs) within 72 hours of the initiation of inpatient IV study drug for treatment of suspected infection; antibiotic prophylaxis and oral antibiotics is allowed; prophylactic use of antiviral or antifungal medication is permitted * Requirement for any non-study potentially effective concomitant systemic antibacterial therapy * Past or current history of epilepsy or seizure disorder; exception: well-documented febrile seizure of childhood * Evidence of immediately life-threatening disease, progressively fatal disease, or life expectancy of 3 months or less (eg, moribund or with shock unresponsive to fluid replacement) * Unable or unwilling to adhere to the study-specified procedures and restrictions * Any condition that would make the patient, in the opinion of the investigator, unsuitable for the study (eg, would place a patient at risk or compromise the quality of the data * Participation in any other ongoing ceftolozane/tazobactam trial

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Favorable Clinical Response at End of Inpatient Intravenous Therapy (EOIV)Within 72 hours after administration of the last dose of inpatient IV study drugResolution of all acute signs and symptoms of the primary infection or improvement to such an extent that no additional antibacterial therapy is required (ie, except for protocol-allowed adjunctive therapies and/or oral or IV switch) and such that no more than 14 days of total antibacterial therapy is required.

Secondary

MeasureTime frameDescription
Number of Participants With Favorable Clinical Response in the Clinically Evaluable (CE) Analysis Set at EOIV.Within 72 hours after administration of the last dose of inpatient IV study drug.The secondary efficacy outcome is favorable clinical response of the patients in the CE (Clinically Evaluable) Analysis Set at end of inpatient intravenous therapy (EOIV). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Clinical Response in the MITT Analysis Set at TOC21 to 28 days after the start of inpatient IV study drugThe secondary efficacy outcome is favorable clinical response of the patients in the MITT (Modified Intent-To-Treat) Analysis Set at test-of-cure (TOC). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Clinical Response in the MITT Analysis Set at Late Follow-Up (LFU)35 to 42 days after the start of inpatient IV study drugThe secondary efficacy outcome is favorable clinical response of the patients in the MITT (Modified Intent-To-Treat) Analysis Set at late follow-up (LFU). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Clinical Response in the mMITT Analysis Set at Test of Cure (TOC)21 to 28 days after the start of inpatient IV study drug.The secondary efficacy outcome is favorable clinical response of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at test-of-cure (TOC). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Clinical Response in the mMITT Analysis Set at Late Follow-Up (LFU)35 to 42 days after the start of inpatient IV study drugThe secondary efficacy outcome is favorable clinical response of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at late follow-up (LFU). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Clinical Response in the CE Analysis Set at TOC21 to 28 days after the start of inpatient IV study drugThe secondary efficacy outcome is favorable clinical response of the patients in the CE (Clinically Evaluable) Analysis Set at test-of-cure (TOC). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Clinical Response in the CE Analysis Set at LFU.35 to 42 days after the start of inpatient IV study drugThe secondary efficacy outcome is favorable clinical response of the patients in the CE (Clinically Evaluable) Analysis Set at late follow-up (LFU). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Clinical Response in the ME Analysis Set at EOIV.Within 72 hours after administration of the last dose of inpatient IV study drug.The secondary efficacy outcome is favorable clinical response of the patients in the ME (Microbiologically Evaluable) Analysis Set at end of inpatient intravenous therapy (EOIV). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Clinical Response in the ME Analysis Set at TOC21 to 28 days after the start of inpatient IV study drug.The secondary efficacy outcome is favorable clinical response of the patients in the ME (Microbiologically Evaluable) Analysis Set at test-of-cure (TOC). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Clinical Response in the ME Analysis Set at LFU.35 to 42 days after the start of inpatient IV study drugThe secondary efficacy outcome is favorable clinical response of the patients in the ME (Microbiologically Evaluable) Analysis Set at late follow-up (LFU). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Microbiological Response in the mMITT Analysis Set at EOIV.Within 72 hours after administration of the last dose of inpatient IV study drugThe secondary efficacy outcome is favorable microbiological response of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at end of inpatient intravenous therapy (EOIV). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Clinical Response in the Microbiological Modified Intent-to-treat (mMITT) Analysis Set at EOIV.Within 72 hours after administration of the last dose of inpatient IV study drug.The secondary efficacy outcome is favorable clinical response of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at end of inpatient intravenous therapy (EOIV). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Microbiological Response in the mMITT Analysis Set at LFU.35 to 42 days after the start of inpatient IV study drug.The secondary efficacy outcome is favorable microbiological response of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at late follow-up (LFU). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Microbiological Response in the ME Analysis Set at EOIV.Within 72 hours after administration of the last dose of inpatient IV study drugThe secondary efficacy outcome is favorable clinical response of the patients in the ME (Microbiologically Evaluable) Analysis Set at end of inpatient intravenous therapy (EOIV). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Microbiological Response in the ME Analysis Set at TOC.21 to 28 days after the start of inpatient IV study drugThe secondary efficacy outcome is favorable microbiological response of the patients in the ME (Microbiologically Evaluable) Analysis Set at test-of-cure (TOC). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Favorable Microbiological Response in the ME Analysis Set at LFU35 to 42 days after the start of inpatient IV study drugThe secondary efficacy outcome is favorable microbiological response of the patients in the ME (Microbiologically Evaluable) Analysis Set at late follow-up (LFU). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.
Number of Participants With Infection-related Mortality in the MITT Analysis Set at TOC21 to 28 days after the start of inpatient IV study drugThe secondary efficacy outcome is infection-related mortality of the patients in the MITT (Modified Intent-To-Treat) Analysis Set at test-of-cure (TOC).
Number of Participants With Infection-related Mortality in the MITT Analysis Set at LFU35 to 42 days after the start of inpatient IV study drugThe secondary efficacy outcome is infection-related mortality of the patients in the MITT (Modified Intent-To-Treat) Analysis Set at late follow-up (LFU).
Number of Participants With Infection-related Mortality the mMITT Analysis Set at TOC21 to 28 days after the start of inpatient IV study drugThe secondary efficacy outcome is infection-related mortality of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at test-of-cure (TOC).
Number of Participants With Infection-related Mortality in the mMITT Analysis Set at LFU.35 to 42 days after the start of inpatient IV study drugThe secondary efficacy outcome is infection-related mortality of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at late follow-up (LFU).
30 Day All-cause Mortality in the MITT Analysis Set30 days after the last dose of inpatient IV study drugThe secondary efficacy outcome is all-cause mortality of the patients in the MITT (Modified Intent-To-Treat) Analysis Set, which is mortality within 30 days after the last dose of inpatient IV study drug.
30 Day All-cause Mortality in the mMITT Analysis Set30 days after the last dose of inpatient IV study drugThe secondary efficacy outcome is all-cause mortality of the patients in the mMITT (microbiological Modified Intent-To-Treat) Analysis Set, which is mortality within 30 days after the last dose of inpatient IV study drug.
Favorable Microbiological Response in the mMITT Analysis Set at TOC.21 to 28 days after the start of inpatient IV study drugThe secondary efficacy outcome is favorable microbiological response of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at test-of-cure (TOC). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Countries

United States

Participant flow

Participants by arm

ArmCount
Ceftolozane/Tazobactam Arm
Received IV Ceftolozane/Tazobactam (minimum of 9 doses). Patients may receive other additional therapy.
47
Standard of Care (SOC) Arm
Received one of the following IV therapies: Cefepime (minimum of 9 doses), Meropenem (minimum of 9 doses), Piperacillin/Tazobactam (minimum of 12 doses). Patients may receive other additional therapy.
50
Total97

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event10
Overall StudyDeath32
Overall StudyWithdrawal by Subject30

Baseline characteristics

CharacteristicTotalStandard of Care (SOC) ArmCeftolozane/Tazobactam Arm
Age, Continuous56 years55 years60 years
Bacterial Pathogen Causing Documented Infection
Gram Negative
4 Participants2 Participants2 Participants
Bacterial Pathogen Causing Documented Infection
Gram Negative and Gram Positive
2 Participants0 Participants2 Participants
Bacterial Pathogen Causing Documented Infection
Gram Positive
18 Participants10 Participants8 Participants
History of Bone Marrow Transplant (BMT) within 1 year
Allogeneic
9 Participants5 Participants4 Participants
History of Bone Marrow Transplant (BMT) within 1 year
Autologous
6 Participants4 Participants2 Participants
Microbiology Documentation
Blood
21 Participants11 Participants10 Participants
Microbiology Documentation
Genitourinary
2 Participants0 Participants2 Participants
Microbiology Documentation
Genitourinary and Blood
1 Participants1 Participants0 Participants
Organism of positive culture
E. coli
2 Participants2 Participants0 Participants
Organism of positive culture
Entereococcus faecalis
2 Participants2 Participants0 Participants
Organism of positive culture
Entereococcus faecalis + E coli
1 Participants0 Participants1 Participants
Organism of positive culture
Enterococcus faecalis + Pseudomonas aeruginosa
1 Participants0 Participants1 Participants
Organism of positive culture
Klebsiella pneumoniae
1 Participants0 Participants1 Participants
Organism of positive culture
Methicillin-resistant Staphylococcus aureus (MRSA)
3 Participants1 Participants2 Participants
Organism of positive culture
Pseudomonas aeruginosa
1 Participants0 Participants1 Participants
Organism of positive culture
Rothia mucilaginous
1 Participants0 Participants1 Participants
Organism of positive culture
Staphylococcus epidermidis
2 Participants2 Participants0 Participants
Organism of positive culture
Streptococcus viridans
10 Participants5 Participants5 Participants
Race/Ethnicity, Customized
Asian
1 Participants1 Participants0 Participants
Race/Ethnicity, Customized
Black or African American
9 Participants5 Participants4 Participants
Race/Ethnicity, Customized
Hispanic or Latino
13 Participants7 Participants6 Participants
Race/Ethnicity, Customized
Middle East
4 Participants1 Participants3 Participants
Race/Ethnicity, Customized
Others
3 Participants1 Participants2 Participants
Race/Ethnicity, Customized
White
67 Participants35 Participants32 Participants
Region of Enrollment
United States
97 participants50 participants47 participants
Sex: Female, Male
Female
37 Participants18 Participants19 Participants
Sex: Female, Male
Male
60 Participants32 Participants28 Participants
Site of Microorganisms
Blood
22 Participants12 Participants10 Participants
Site of Microorganisms
Genitourinary
3 Participants1 Participants2 Participants
Temperature at baseline37.4 Celsius37.5 Celsius37.3 Celsius
Temperature at initial presentation
36 -38 Celsius
10 Participants7 Participants3 Participants
Temperature at initial presentation
< 36 Celsius
0 Participants0 Participants0 Participants
Temperature at initial presentation
>38 Celsius
87 Participants43 Participants44 Participants
Type of Hematological malignancy
Acute Lymphocytic Leukemia(ALL)
21 Participants12 Participants9 Participants
Type of Hematological malignancy
Chronic Lymphocytic Leukemia (AML)
41 Participants22 Participants19 Participants
Type of Hematological malignancy
Chronic Myeloid Leukemia (CML)
3 Participants0 Participants3 Participants
Type of Hematological malignancy
Lymphoma
15 Participants6 Participants9 Participants
Type of Hematological malignancy
Others
17 Participants10 Participants7 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
3 / 472 / 50
other
Total, other adverse events
9 / 476 / 50
serious
Total, serious adverse events
33 / 4733 / 50

Outcome results

Primary

Number of Participants With Favorable Clinical Response at End of Inpatient Intravenous Therapy (EOIV)

Resolution of all acute signs and symptoms of the primary infection or improvement to such an extent that no additional antibacterial therapy is required (ie, except for protocol-allowed adjunctive therapies and/or oral or IV switch) and such that no more than 14 days of total antibacterial therapy is required.

Time frame: Within 72 hours after administration of the last dose of inpatient IV study drug

Population: Patients in MITT (Modified Intent-To-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Clinical Response at End of Inpatient Intravenous Therapy (EOIV)41 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Clinical Response at End of Inpatient Intravenous Therapy (EOIV)36 Participants
Secondary

30 Day All-cause Mortality in the MITT Analysis Set

The secondary efficacy outcome is all-cause mortality of the patients in the MITT (Modified Intent-To-Treat) Analysis Set, which is mortality within 30 days after the last dose of inpatient IV study drug.

Time frame: 30 days after the last dose of inpatient IV study drug

Population: Patients in MITT (Modified Intent-To-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam Arm30 Day All-cause Mortality in the MITT Analysis Set2 Participants
Standard of Care (SOC) Arm30 Day All-cause Mortality in the MITT Analysis Set2 Participants
Secondary

30 Day All-cause Mortality in the mMITT Analysis Set

The secondary efficacy outcome is all-cause mortality of the patients in the mMITT (microbiological Modified Intent-To-Treat) Analysis Set, which is mortality within 30 days after the last dose of inpatient IV study drug.

Time frame: 30 days after the last dose of inpatient IV study drug

Population: Patients in mMITT (Modified Intent-To-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam Arm30 Day All-cause Mortality in the mMITT Analysis Set0 Participants
Standard of Care (SOC) Arm30 Day All-cause Mortality in the mMITT Analysis Set0 Participants
Secondary

Favorable Microbiological Response in the mMITT Analysis Set at TOC.

The secondary efficacy outcome is favorable microbiological response of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at test-of-cure (TOC). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: 21 to 28 days after the start of inpatient IV study drug

Population: Patients in mMITT (Microbiological Modified Intent-To-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmFavorable Microbiological Response in the mMITT Analysis Set at TOC.3 Participants
Standard of Care (SOC) ArmFavorable Microbiological Response in the mMITT Analysis Set at TOC.2 Participants
Secondary

Number of Participants With Favorable Clinical Response in the CE Analysis Set at LFU.

The secondary efficacy outcome is favorable clinical response of the patients in the CE (Clinically Evaluable) Analysis Set at late follow-up (LFU). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: 35 to 42 days after the start of inpatient IV study drug

Population: Patients in CE (Clinically Evaluable) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Clinical Response in the CE Analysis Set at LFU.27 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Clinical Response in the CE Analysis Set at LFU.24 Participants
Secondary

Number of Participants With Favorable Clinical Response in the CE Analysis Set at TOC

The secondary efficacy outcome is favorable clinical response of the patients in the CE (Clinically Evaluable) Analysis Set at test-of-cure (TOC). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: 21 to 28 days after the start of inpatient IV study drug

Population: Patients in CE (Clinically Evaluable) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Clinical Response in the CE Analysis Set at TOC28 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Clinical Response in the CE Analysis Set at TOC26 Participants
Secondary

Number of Participants With Favorable Clinical Response in the Clinically Evaluable (CE) Analysis Set at EOIV.

The secondary efficacy outcome is favorable clinical response of the patients in the CE (Clinically Evaluable) Analysis Set at end of inpatient intravenous therapy (EOIV). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: Within 72 hours after administration of the last dose of inpatient IV study drug.

Population: Patients in CE (Clinically Evaluable) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Clinical Response in the Clinically Evaluable (CE) Analysis Set at EOIV.29 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Clinical Response in the Clinically Evaluable (CE) Analysis Set at EOIV.32 Participants
Secondary

Number of Participants With Favorable Clinical Response in the ME Analysis Set at EOIV.

The secondary efficacy outcome is favorable clinical response of the patients in the ME (Microbiologically Evaluable) Analysis Set at end of inpatient intravenous therapy (EOIV). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: Within 72 hours after administration of the last dose of inpatient IV study drug.

Population: Patients in CE analysis set with baseline Gram-negative pathogen (= ME (Microbiologically Evaluable) Analysis Set)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Clinical Response in the ME Analysis Set at EOIV.2 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Clinical Response in the ME Analysis Set at EOIV.1 Participants
Secondary

Number of Participants With Favorable Clinical Response in the ME Analysis Set at LFU.

The secondary efficacy outcome is favorable clinical response of the patients in the ME (Microbiologically Evaluable) Analysis Set at late follow-up (LFU). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: 35 to 42 days after the start of inpatient IV study drug

Population: Patients in CE analysis set with baseline Gram-negative pathogen (= ME (Microbiologically Evaluable) Analysis Set)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Clinical Response in the ME Analysis Set at LFU.2 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Clinical Response in the ME Analysis Set at LFU.1 Participants
Secondary

Number of Participants With Favorable Clinical Response in the ME Analysis Set at TOC

The secondary efficacy outcome is favorable clinical response of the patients in the ME (Microbiologically Evaluable) Analysis Set at test-of-cure (TOC). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: 21 to 28 days after the start of inpatient IV study drug.

Population: Patients in CE analysis set with baseline Gram-negative pathogen (= ME (Microbiologically Evaluable) Analysis Set)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Clinical Response in the ME Analysis Set at TOC2 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Clinical Response in the ME Analysis Set at TOC1 Participants
Secondary

Number of Participants With Favorable Clinical Response in the Microbiological Modified Intent-to-treat (mMITT) Analysis Set at EOIV.

The secondary efficacy outcome is favorable clinical response of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at end of inpatient intravenous therapy (EOIV). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: Within 72 hours after administration of the last dose of inpatient IV study drug.

Population: Patients in mMITT (Microbiological Modified Intent-To-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Clinical Response in the Microbiological Modified Intent-to-treat (mMITT) Analysis Set at EOIV.3 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Clinical Response in the Microbiological Modified Intent-to-treat (mMITT) Analysis Set at EOIV.1 Participants
Secondary

Number of Participants With Favorable Clinical Response in the MITT Analysis Set at Late Follow-Up (LFU)

The secondary efficacy outcome is favorable clinical response of the patients in the MITT (Modified Intent-To-Treat) Analysis Set at late follow-up (LFU). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: 35 to 42 days after the start of inpatient IV study drug

Population: Patients in the MITT (Modified Intent-To-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Clinical Response in the MITT Analysis Set at Late Follow-Up (LFU)33 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Clinical Response in the MITT Analysis Set at Late Follow-Up (LFU)26 Participants
Secondary

Number of Participants With Favorable Clinical Response in the MITT Analysis Set at TOC

The secondary efficacy outcome is favorable clinical response of the patients in the MITT (Modified Intent-To-Treat) Analysis Set at test-of-cure (TOC). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: 21 to 28 days after the start of inpatient IV study drug

Population: Patients in the MITT (Modified Intent-To-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Clinical Response in the MITT Analysis Set at TOC34 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Clinical Response in the MITT Analysis Set at TOC28 Participants
Secondary

Number of Participants With Favorable Clinical Response in the mMITT Analysis Set at Late Follow-Up (LFU)

The secondary efficacy outcome is favorable clinical response of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at late follow-up (LFU). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: 35 to 42 days after the start of inpatient IV study drug

Population: Patients in mMITT (Microbiological Modified Intent-To-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Clinical Response in the mMITT Analysis Set at Late Follow-Up (LFU)3 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Clinical Response in the mMITT Analysis Set at Late Follow-Up (LFU)1 Participants
Secondary

Number of Participants With Favorable Clinical Response in the mMITT Analysis Set at Test of Cure (TOC)

The secondary efficacy outcome is favorable clinical response of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at test-of-cure (TOC). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: 21 to 28 days after the start of inpatient IV study drug.

Population: Patients in mMITT (Microbiological Modified Intent-To-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Clinical Response in the mMITT Analysis Set at Test of Cure (TOC)3 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Clinical Response in the mMITT Analysis Set at Test of Cure (TOC)1 Participants
Secondary

Number of Participants With Favorable Microbiological Response in the ME Analysis Set at EOIV.

The secondary efficacy outcome is favorable clinical response of the patients in the ME (Microbiologically Evaluable) Analysis Set at end of inpatient intravenous therapy (EOIV). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: Within 72 hours after administration of the last dose of inpatient IV study drug

Population: Patients in ME (Microbiologically Evaluable) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Microbiological Response in the ME Analysis Set at EOIV.2 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Microbiological Response in the ME Analysis Set at EOIV.1 Participants
Secondary

Number of Participants With Favorable Microbiological Response in the ME Analysis Set at LFU

The secondary efficacy outcome is favorable microbiological response of the patients in the ME (Microbiologically Evaluable) Analysis Set at late follow-up (LFU). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: 35 to 42 days after the start of inpatient IV study drug

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Microbiological Response in the ME Analysis Set at LFU2 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Microbiological Response in the ME Analysis Set at LFU1 Participants
Secondary

Number of Participants With Favorable Microbiological Response in the ME Analysis Set at TOC.

The secondary efficacy outcome is favorable microbiological response of the patients in the ME (Microbiologically Evaluable) Analysis Set at test-of-cure (TOC). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: 21 to 28 days after the start of inpatient IV study drug

Population: Patients in ME (Microbiologically Evaluable) Analysis Set.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Microbiological Response in the ME Analysis Set at TOC.2 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Microbiological Response in the ME Analysis Set at TOC.1 Participants
Secondary

Number of Participants With Favorable Microbiological Response in the mMITT Analysis Set at EOIV.

The secondary efficacy outcome is favorable microbiological response of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at end of inpatient intravenous therapy (EOIV). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: Within 72 hours after administration of the last dose of inpatient IV study drug

Population: Patients in mMITT (Microbiological Modified Intent-To-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Microbiological Response in the mMITT Analysis Set at EOIV.3 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Microbiological Response in the mMITT Analysis Set at EOIV.2 Participants
Secondary

Number of Participants With Favorable Microbiological Response in the mMITT Analysis Set at LFU.

The secondary efficacy outcome is favorable microbiological response of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at late follow-up (LFU). The clinical outcome has three categories: Favorable clinical response, Clinical failure, and Indeterminate.

Time frame: 35 to 42 days after the start of inpatient IV study drug.

Population: Patients in mMITT (Microbiological Modified Intent-To-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Favorable Microbiological Response in the mMITT Analysis Set at LFU.3 Participants
Standard of Care (SOC) ArmNumber of Participants With Favorable Microbiological Response in the mMITT Analysis Set at LFU.2 Participants
Secondary

Number of Participants With Infection-related Mortality in the MITT Analysis Set at LFU

The secondary efficacy outcome is infection-related mortality of the patients in the MITT (Modified Intent-To-Treat) Analysis Set at late follow-up (LFU).

Time frame: 35 to 42 days after the start of inpatient IV study drug

Population: Patients in MITT (Modified Intent-to-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Infection-related Mortality in the MITT Analysis Set at LFU0 Participants
Standard of Care (SOC) ArmNumber of Participants With Infection-related Mortality in the MITT Analysis Set at LFU0 Participants
Secondary

Number of Participants With Infection-related Mortality in the MITT Analysis Set at TOC

The secondary efficacy outcome is infection-related mortality of the patients in the MITT (Modified Intent-To-Treat) Analysis Set at test-of-cure (TOC).

Time frame: 21 to 28 days after the start of inpatient IV study drug

Population: Patients in MITT (Modified Intent-To-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Infection-related Mortality in the MITT Analysis Set at TOC0 Participants
Standard of Care (SOC) ArmNumber of Participants With Infection-related Mortality in the MITT Analysis Set at TOC0 Participants
Secondary

Number of Participants With Infection-related Mortality in the mMITT Analysis Set at LFU.

The secondary efficacy outcome is infection-related mortality of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at late follow-up (LFU).

Time frame: 35 to 42 days after the start of inpatient IV study drug

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Infection-related Mortality in the mMITT Analysis Set at LFU.0 Participants
Standard of Care (SOC) ArmNumber of Participants With Infection-related Mortality in the mMITT Analysis Set at LFU.0 Participants
Secondary

Number of Participants With Infection-related Mortality the mMITT Analysis Set at TOC

The secondary efficacy outcome is infection-related mortality of the patients in the mMITT (Microbiological Modified Intent-To-Treat) Analysis Set at test-of-cure (TOC).

Time frame: 21 to 28 days after the start of inpatient IV study drug

Population: Patients in mMITT (Microbiological Modified Intent-To-Treat) Analysis Set

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ceftolozane/Tazobactam ArmNumber of Participants With Infection-related Mortality the mMITT Analysis Set at TOC0 Participants
Standard of Care (SOC) ArmNumber of Participants With Infection-related Mortality the mMITT Analysis Set at TOC0 Participants

Source: ClinicalTrials.gov · Data processed: Feb 13, 2026