Optimization of Beta-lactam Dosing in Critically Ill Patients With Cystatin C (OPTIMIZE-GNI)
Public ClinicalTrials.gov record NCT06709521. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Optimization of Beta-lactam Dosing in Critically Ill Patients With Suspected or Documented Antimicrobial Resistant Gram-Negative Infections With Cystatin-C (OPTIMIZE-GNI)
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This is a Phase 4, interventional, multi-center pharmacokinetics (PK) study in up to 200 adult patients who are residing in an ICU. This study will compare the abilities of Cystatin C (CysC) and CysC-based estimated Glomerular Filtration Rate (eGFR) equations to characterize the PK profiles of meropenem and cefepime relative to Serum Creatinine (SCR), Serum Creatinine based Equation (SCRE), and iohexol in critically ill patients with suspected or documented AMR Gram-negative infections. We hypothesize that CysC and CysC-based eGFR equations will characterize the PK profiles of meropenem and cefepime at the population and individual levels with greater accuracy and precision than SCR and SCREs. Iohexol will be administered to patients enrolled in the study and serve as the reference indicator of measured Glomerular Filtration Rate (mGFR), which is the gold standard assessment of kidney function. We further hypothesize that the predictive performances of CysC and CysC-based eGFR equations in estimating the PK profiles of meropenem and cefepime at the population and individual levels will be comparable to iohexol. Firstly, population PK (PopPK) modeling will be used to develop meropenem and cefepime PopPK models informed by CysC, CysC-based eGFR equations, SCR, and SCREs (renal function biomarkers), and iohexol clearance. Secondly, model diagnostics will then be used to compare the predictive performances of the renal function biomarkers PopPK models for each antibiotic relative to iohexol PopPK model. Lastly, Monte Carlo simulation (MCS) will be used to design PK/ pharmacodynamics (PD) optimized meropenem and cefepime dosing schemes based on the renal function biomarker PopPK model with the best predictive performance for use in the treatment of critically ill adult patients with suspected or documented AMR Gram-negative infections and varying degrees of renal function. The primary objective of this study is to compare the abilities of renal function biomarkers (CysC, CysC-based eGFR equations, SCR, SCREs) relative to iohexol to characterize the PK profiles of meropenem and cefepime in critically ill adult patients with suspected or documented AMR Gram-negative infections.
Study identification
- NCT ID
- NCT06709521
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 4
- Enrollment
- 161 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Feb 11, 2025
- Primary completion
- Jul 1, 2026
- Completion
- Jul 1, 2026
- Last update posted
- Jul 30, 2026
2025 – 2026
United States locations
- U.S. sites
- 10
- U.S. states
- 7
- U.S. cities
- 9
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Harbor UCLA Medical Center - Medicine - Infectious Diseases | Torrance | California | 90502-2006 | — |
| Torrance Memorial Medical Center | Torrance | California | 90505 | — |
| Henry Ford Health System - Henry Ford Hospital | Detroit | Michigan | 48202-2608 | — |
| Corewell Health - Infectious Disease | Royal Oak | Michigan | 48073 | — |
| Duke University Hospital - Infectious Diseases | Durham | North Carolina | 27710 | — |
| East Carolina University - Infectious Diseases and Tropical/Travel Medicine Clinic | Greenville | North Carolina | 27834-9997 | — |
| University of Cincinnati College of Medicine - Division of Infectious Diseases | Cincinnati | Ohio | 45267 | — |
| Oregon Health and Science University - Adult Infectious Diseases Clinic | Portland | Oregon | 97239-3098 | — |
| University of Pittsburgh - Medicine - Infectious Diseases | Pittsburgh | Pennsylvania | 15213-3403 | — |
| Carilion Roanoke Memorial Hospital | Roanoke | Virginia | 24014 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT06709521, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 30, 2026 · Synced Sep 3, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT06709521 live on ClinicalTrials.gov.