Evidence map›Paper›PMID 40073372›Full record

Observational studyThe Pediatric infectious disease journal2025

Urinary Biomarkers and Attainment of Cefepime Therapeutic Targets in Critically Ill Children.

Kevin J Downes, Anna Sharova, Victor Amajor, Lauren Gianchetti, Adam S Himebauch, Julie C Fitzgerald, Athena F Zuppa

Abstract readObservational Study
In one paragraph

Observational study in The Pediatric infectious disease journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Ceftaroline pharmacokinetics on ECMO, a pediatric case report.International journal of antimicrobial agents · 2026
    Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Kevin J DownesFrom the Department of Pediatrics.ORCID 0000-0001-5015-8146
Anna SharovaCenter for Clinical Pharmacology.
Victor AmajorCenter for Clinical Pharmacology.
Lauren GianchettiClinical Futures.
Adam S HimebauchDepartment of Anesthesiology and Critical Care, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA.
Julie C FitzgeraldDepartment of Anesthesiology and Critical Care, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA.
Athena F ZuppaFrom the Department of Pediatrics.

Funding

Phenotypic Diversity in COVID-19UL1TR001878 · NCATS · UNIVERSITY OF PENNSYLVANIA · PI FITZGERALD, GARRET A · 2016 to 2025
$102.4M
CLINICAL PHARMACOLOGY TRAINING PROGRAMT32GM008562 · NIGMS · THOMAS JEFFERSON UNIVERSITY · PI WALTER K KRAFT, Scott A. Waldman · 1995 to 2026
$10.2M
The Roles of Pulmonary Hypertension and Right Ventricular Dysfunction in Pediatric Acute Respiratory Distress SyndromeK23HL153759 · NHLBI · CHILDREN'S HOSP OF PHILADELPHIA · PI HIMEBAUCH, ADAM S. · 2021 to 2025
$879k
Pediatric septic acute kidney injury: personalizing antibiotic dosing through understanding acute kidney injury risk factors and biomarker profilesK23DK119463 · NIDDK · CHILDREN'S HOSP OF PHILADELPHIA · PI FITZGERALD, JULIE C. HOLLOWS · 2020 to 2024
$810k
Optimizing Vancomycin Therapy in ChildrenK23HD091365 · NICHD · CHILDREN'S HOSP OF PHILADELPHIA · PI DOWNES, KEVIN JAMES · 2018 to 2022
$747k
NCATS NIH HHS UL1 TR001878NHLBI NIH HHS K23 HL153759NICHD NIH HHS K23 HD091365NIDDK NIH HHS K23 DK119463NIGMS NIH HHS T32 GM008562
6 · The paper itself

Abstract

backgroundCritically ill children are at risk for subtherapeutic antibiotic concentrations. The frequency of target attainment and risk factors for subtherapeutic concentrations of cefepime in children have not been extensively studied.

methodsWe performed an observational study in critically ill children receiving a new prescription of standard dosing of cefepime for suspected sepsis (≥2 systemic inflammatory response syndrome criteria within 48 hours of cefepime start). Three plasma cefepime concentrations were measured at steady state and, a urine sample was collected prior to pharmacokinetics (PK) sampling for measurement of urinary biomarkers. Bayesian analysis determined cefepime PK for each individual, and simulations were used to estimate time above minimum inhibitory concentration ( f T > MIC) for 8 µg/mL (breakpoint for Pseudomonas ). Clinical factors and urinary biomarkers were compared between patients who did and did not achieve 100% f T > MIC. Correlations between covariates and cefepime PK parameters, as well as optimal cut points to identify <100% f T > MIC, were evaluated.

resultsTwenty-one subjects were enrolled and PK sampling occurred after a median of 5 doses (range, 3-9); 43% of children achieved 100% f T > MIC for an MIC of 8 µg/mL. Younger age and lower urinary biomarkers (neutrophil gelatinase-associated lipocalin and kidney injury molecule-1) were significantly associated with failure to attain 100% f T > 8 µg/mL. Urinary neutrophil gelatinase-associated lipocalin (<122.1-ng/mg creatinine) best identified individuals who failed to attain this putative target (positive predictive value, 91.7%).

conclusionsA large proportion of critically ill children failed to attain target concentrations for empiric treatment of Pseudomonas aeruginosa with cefepime. Urinary biomarkers may be a noninvasive means to identify those at higher risk for increased cefepime clearance and subtherapeutic concentrations.

Indexed as

Anti-Bacterial AgentsBiomarkersCephalosporinsSepsisAdolescentCefepimeChildChild, PreschoolCritical IllnessFemaleHumansInfantMaleMicrobial Sensitivity TestsAnti-Bacterial AgentsBiomarkersCefepimeCephalosporinsaugmented renal clearancebiomarkerspharmacokineticssepsistarget attainment

Identifiers

PMID40073372
PMCPMC12286746

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.