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Meropenem-Vaborbactam

Phase 3

Urinary Tract Infection Complicated | Small molecule | Nephrology |CorMedix Inc.|Trials Updated: Sep 10, 2026

Meropenem-Vaborbactam development status

Highest phase Phase 3
Registered trials 6 across 3 sponsors since Jun 2014

Meropenem-Vaborbactam target and mechanism

Molecular targetPBP/KPC
ModalitySmall molecule

Also known as Vabomere, Carbavance, Meropenem 2 g-Vaborbactam 2 g

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials4
Total Enrollment732

FDA Designations

No designations recorded

Meropenem-Vaborbactam clinical trials

Meropenem-Vaborbactam · 4 trials · 8 indications

Phase 3 2Phase 2 1Phase 1 1
NCT02166476Efficacy/Safety of Meropenem-Vaborbactam Compared to Piperacillin-Tazobactam in Adults With cUTI and APUrinary Tract Infection Complicated
COMPLETED550 Analytics
NCT02168946Efficacy, Safety, Tolerability of Vabomere Compared to Best Available Therapy in Treating Serious Infections in AdultsUrinary Tract Infection Complicated
COMPLETED77 Analytics
PHASE3COMPLETED
Efficacy/Safety of Meropenem-Vaborbactam Compared to Piperacillin-Tazobactam in Adults With cUTI and AP
Urinary Tract Infection ComplicatedUnlock trial analytics
PHASE3COMPLETED
Efficacy, Safety, Tolerability of Vabomere Compared to Best Available Therapy in Treating Serious Infections in Adults
Urinary Tract Infection ComplicatedUnlock trial analytics

Study Endpoints

Primary Endpoints

Proportion Of Participants In The Microbiological Modified Intent-To-Treat (m-MITT) Population Who Achieved Overall Success At The End Of Intravenous Treatment Visit
EOIVT (Days 5-14)

This was the primary outcome measure for the Food and Drug Administration (FDA). For this composite outcome measure, overall success was achieved with a clinical outcome of Cure or Improvement and microbiologic outcome of Eradication at the end of intravenous treatment (EOIVT). Cure was defined as the complete resolution or significant improvement of the baseline signs and symptoms. Improvement was defined as lessening, incomplete resolution, or no worsening of the baseline signs and symptoms. Eradication was defined using the FDA's colony-forming units (CFU)/mL criteria that the bacterial pathogen(s) found at baseline was/were reduced to \<10\^4 CFU/mL of urine culture and a negative blood culture for an organism that was identified as an uropathogen (if repeated after positive at baseline blood culture).

Proportion Of Participants In The m-MITT Population Who Achieved A Microbiologic Outcome Of Eradication At The Test Of Cure Visit
Test of cure (TOC) (Days 15-23)

This was the primary outcome measure for the European Medicines Agency (EMA). For this measure, a microbiologic outcome of Eradication was defined using the EMA's CFU/mL criteria: bacterial pathogen(s) found at baseline was reduced to \<10\^3 CFU/mL of urine culture and a negative blood culture for an organism that was identified as an uropathogen (if repeated after positive at baseline blood culture).

Proportion Of Participants In The Microbiological Evaluable (ME) Population Who Achieved A Microbiologic Outcome Of Eradication At The TOC Visit
TOC (Days 15-23)

This was the primary outcome measure for the EMA. For this measure, a microbiologic outcome of Eradication was defined using the EMA's CFU/mL criteria: bacterial pathogen(s) found at baseline was reduced to \<10\^3 CFU/mL of urine culture and a negative blood culture for an organism that was identified as an uropathogen (if repeated after positive at baseline blood culture). The ME population included all participants who met m-MITT criteria and had a clinical outcome and microbiologic outcome at EOIVT or earlier; received \<80% or \>120% of expected IV doses; missed no more than 1 IV dose in the first 48 hours, missed no more than 2 consecutive IV doses; received no less than 6 doses for failure or no less than 9 doses for cure.

Proportion of Subjects in the Microbiological Carbapenem-resistant Enterobacteriaceae Modified Intent-to-Treat (mCRE-MITT) Population With a Response of Overall Success [Complicated Urinary Tract Infection (cUTI) or Acute Pyelonephritis (AP) Subjects]
at Test of Cure (TOC) visit (Day 12-23)

Overall success is defined as clinical cure \& microbiological eradication. Eradication defined by FDA as the demonstration that the bacterial pathogen(s) found at baseline is reduced to \<10x4 colony forming unit (CFU)/mL urine. Clinical cure defined as complete resolution or significant improvement of the baseline signs \& symptoms, no further antimicrobial warranted.

All-cause Mortality Rate in the mCRE-MITT Population [Hospital-acquired Bacterial Pneumonia (HABP), Ventilator-associated Bacterial Pneumonia (VABP) and Bacteremia Subjects)
Day 28

The All-cause mortality rate at Day 28 in the mCRE-MITT population (HABP/VABP and Bacteremia)

Proportion of Subjects in the mCRE-MITT Population With a Clinical Outcome of Cure [Complicated Intra-abdominal Infection (cIAI) Subjects Only]
at TOC visit (Day 12-23)

Clinical cure defined as complete resolution or significant improvement of the baseline signs and symptoms, no further antimicrobial warranted.

Number of Participants With Adverse Events (AEs)
Up to 28 days
Pharmacokinetics: AUC0-∞
From pre-dose until 6 hours after the start of the infusion

AUC from time zero to infinity

Pharmacokinetics: Cmax
From pre-dose until 6 hours after the start of the infusion

maximum measured plasma concentration

Pharmacokinetics: time to maximum plasma concentration (Tmax)
From pre-dose until 6 hours after the start of the infusion

time to Cmax

Pharmacokinetics: drug clearance (CL)
From pre-dose until 6 hours after the start of the infusion

total body clearance

Pharmacokinetics: t1/2
From pre-dose until 6 hours after the start of the infusion

elimination half- life

Pharmacokinetics: Cmin
From pre-dose until 6 hours after the start of the infusion

minimum plasma concentration

Pharmacokinetics: Vss
From pre-dose until 6 hours after the start of the infusion

Volume of distribution

Safety and tolerability: AEs/SAEs
From assent / consent until day 7 safety follow up call

a composite measure of the number and types of AEs/SAEs encountered and relationship to time of dosing

Safety and tolerability: clinical safety laboratory results
From assent / consent until day 7 safety follow up call

A composite measure of multiple laboratory results assessing the clinical significance of any changes from baseline

Safety and tolerability: vital signs
From assent / consent until day 7 safety follow up call

A composite of multiple vital sign measurements, assessing the clinical significance of any changes from baseline

Safety and tolerability: ECGs
From assent / consent until day 7 safety follow up call

A composite of multiple ECG measurements, assessing the clinical significance of any changes from baseline

Secondary Endpoints

Proportion Of Participants In The m-MITT Population With Overall Success
EOIVT (Days 5-14) and TOC (Days 15-23)
Proportion Of Participants In The ME Population With Overall Success
EOIVT (Days 5-14) and TOC (Days 15-23)
Proportion Of Participants In The m-MITT Population Who Achieved A Microbiologic Outcome Of Eradication
Day 3, EOIVT (Days 5-14), EOT (Days 10-14), TOC (Days 15-23), and LFU (Days 22-30)
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Meropenem-VaborbactamEXPERIMENTALMeropenem-vaborbactam (meropenem 2 grams \[g\] plus vaborbactam 2 g), infused in 250 milliliters (mL) normal saline, administered intravenously (IV) over 3 hours, every 8 hours (q8h), with 100 mL saline administered over 30 minutes q8h. Levofloxacin tablets administered orally as a 500-milligram (mg) dose every 24 hours (q24h) after a minimum of 15 doses of IV meropenem-vaborbactam plus saline, if clinically indicated. Total treatment was 10 days, unless a participant had baseline bacteremia where up to 14 days of therapy could be administered IV.
Piperacillin-TazobactamACTIVE_COMPARATORPiperacillin-tazobactam (piperacillin 4 g plus tazobactam 0.5 g), infused in 100 mL normal saline, administered IV over 30 minutes, q8h, with 250 mL saline administered over 30 minutes q8h. Levofloxacin tablets administered orally as a 500-mg dose q24h after a minimum of 15 doses of IV piperacillin-tazobactam plus saline, if clinically indicated. Total treatment was 10 days, unless a participant had baseline bacteremia where up to 14 days of therapy could be administered IV.
VabomereEXPERIMENTALVabomere (meropenem 2g plus vaborbactam 2g) IV q8h, for up to 14 days
Best Available TherapyACTIVE_COMPARATORSubjects will receive Best Available Therapy (IV antibiotics)
Cohort 1: Age 6 to < 12 yearsEXPERIMENTALParticipants will receive meropenem-vaborbactam via an IV infusion for a minimum of 3 days, for up to 14 days. Participants with clinical improvement have the option to switch to an oral antibiotic or home IV therapy after Day 3.
Cohort 2: Age 2 to < 6 yearsEXPERIMENTALParticipants will receive meropenem-vaborbactam IV infusion for a minimum of 3 days, for up to 14 days. Participants with clinical improvement have the option to switch to an oral antibiotic or home IV therapy after Day 3.
Cohort 3: Age 3 months to < 2 yearsEXPERIMENTALParticipants will receive meropenem-vaborbactam IV infusion for a minimum of 3 days, for up to 14 days. Participants with clinical improvement have the option to switch to an oral antibiotic or home IV therapy after Day 3.
Single dose IV meropenem-vaborbactamEXPERIMENTALVabomere (meropenem-vaborbactam) for IV injection will be administered as a single dose diluted in normal saline infused IV over 3 hours * Cohort 1 (n=8): 12 to \< 18 years of age (40 mg/kg) * Cohort 2 (n=8): 6 to \< 12 years of age (40 mg/kg) * Cohort 2b (n=4): 6 to \< 12 years of age (60 mg/kg) * Cohort 3 (n=8): 2 to \< 6 years of age (60 mg/kg) * Cohort 4 (n=8): 3 months to \< 2 years of age (60 mg/kg) * Cohort 5 (n=24): Birth to \< 3 months of age (dose TBD) * Group A: Gestational Age (GA) \< 32 weeks, Postnatal Age (PNA) \< 2 weeks (n=6) * Group B: GA \< 32 weeks, PNA \> 2 weeks (n=6) * Group C: GA \> 32 weeks, PNA \< 2 weeks (n=6) * Group D: GA \> 32 weeks, PNA \> 2 weeks (n=6) * Cohort 6 (n=7): 2 to \< 12 years of age and ≤ 35 kg of weight (80 mg/kg)

Interventions

NameTypeDescription
Meropenem-VaborbactamDRUGMeropenem-vaborbactam
Piperacillin-TazobactamDRUGPiperacillin-tazobactam
LevofloxacinDRUGLevofloxacin
SalineDRUGSaline
VabomereDRUGVabomere for IV injection, administered as a 2 g/2 g dose
Best Available TherapyDRUGAntibiotic(s) chosen by Investigator
AntibioticsDRUGAdministered as prescribed by the study physician in accordance with local guidelines and regulations.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites77

Inclusion Criteria: 1. A signed informed consent form, the ability to understand the study conduct and tasks that are required for study participation, and a willingness to cooperate with all tasks, tests, and examinations as required by the protocol. 2. Male or female ≥18 years of age. 3. Weight ≤...

Countries:United StatesBelarusBrazilBulgariaCzechiaGreeceHungaryItalyPeruPolandRomaniaSlovakiaSloveniaSouth KoreaSpainTaiwanUkraineArgentinaColombiaIsraelUnited KingdomCroatiaGeorgia
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Recent Changes (Last 90 Days)

MEDIUMSep 17, 2026NCT02687906TRIAL_REMOVED: changed
MEDIUMSep 17, 2026NCT02687906TRIAL_REMOVED: changed
MEDIUMSep 17, 2026NCT02687906TRIAL_REMOVED: changed
MEDIUMSep 14, 2026NCT06672978Status: RECRUITING → ACTIVE_NOT_RECRUITING
HIGHSep 14, 2026NCT02687906Status: ACTIVE_NOT_RECRUITING → COMPLETED

Frequently asked questions about Meropenem-Vaborbactam

What is meropenem-vaborbactam used for?

Meropenem-vaborbactam is used to treat serious bacterial infections, including complicated urinary tract infection, acute pyelonephritis, hospital acquired bacterial pneumonia, ventilator-associated bacterial pneumonia, bacteremia, and abdominal infection. It is being studied in adults and in children as young as 3 months with complicated urinary tract infection or acute pyelonephritis.

What does meropenem-vaborbactam target?

Meropenem-vaborbactam targets penicillin-binding proteins (PBP) and Klebsiella pneumoniae carbapenemase (KPC). Meropenem is the antibacterial component that binds penicillin-binding proteins, while vaborbactam is a beta-lactamase inhibitor that acts on KPC enzymes. This combination is designed to address bacterial infections where KPC beta-lactamase activity would otherwise compromise the antibacterial component.

Who is developing meropenem-vaborbactam?

Meropenem-vaborbactam is being developed by CorMedix Inc., which trades on the Nasdaq under the ticker CRMD. The company is the sponsor of the pediatric clinical program evaluating the combination in children with complicated urinary tract infection and acute pyelonephritis.

What phase is meropenem-vaborbactam in?

Meropenem-vaborbactam is in Phase 2 development for its pediatric program in complicated urinary tract infection and acute pyelonephritis. Earlier studies include a completed Phase 1 pediatric trial and completed Phase 3 trials in adults. It is an investigational product in the studies described here and is not described as approved in this program.

What clinical trials is meropenem-vaborbactam in?

The active trial is NCT06672978, a Phase 2 study of safety, tolerability, and pharmacokinetics in children with complicated urinary tract infection, including acute pyelonephritis, in the United States, Bulgaria, Croatia, Georgia, Greece, and Poland. Completed studies include NCT02687906, a Phase 1 pediatric trial, and the Phase 3 trials NCT02168946 and NCT02166476.

Is meropenem-vaborbactam the same as Vabomere?

Yes, meropenem-vaborbactam is also known as Vabomere. Vabomere is the brand name used for the combination in its clinical trial titles, including the Phase 1 pediatric study NCT02687906 and the Phase 3 adult study NCT02168946. Searches for either name refer to the same meropenem and vaborbactam combination product.