Evidence map›Paper›PMID 36646435›Full record

ArticleNephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association2023

GFR estimated with creatinine rather than cystatin C is more reflective of the true risk of adverse outcomes with low GFR in kidney transplant recipients.

Mira T Keddis, Matthew R Howard, Leyton Galapia, Erin F Barreto, Nan Zhang, Richard J Butterfield, Andrew D Rule

Open access · greenAbstract read
In one paragraph

Article in Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
2.3field-weighted citation impact, top 12% of its field
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

5 citing papers in PubMed, 9 citations in OpenAlex.

  1. Combined Creatinine and Cystatin C Equations Improve Estimation of Glomerular Filtration Rate in Kidney Transplant Recipients.Transplant international : official journal of the European Society for Organ Transplantation · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Mira T KeddisDivision of Nephrology, Mayo Clinic, Scottsdale, AZ, USA.ORCID 0000-0001-8249-0848
Matthew R HowardDivision of Nephrology, Mayo Clinic, Scottsdale, AZ, USA.
Leyton GalapiaDivision of Nephrology, Mayo Clinic, Scottsdale, AZ, USA.
Erin F BarretoDepartment of Pharmacy, Mayo Clinic, Rochester, MN, USA.
Nan ZhangDepartment of Quantitative Health Sciences, Mayo Clinic, Scottsdale, AZ, USA.
Richard J ButterfieldDepartment of Quantitative Health Sciences, Mayo Clinic, Scottsdale, AZ, USA.
Andrew D RuleDivision of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA.
Mayo Clinic in Arizona · USMayo Clinic · US

Funding

Beta-lactam individualization for critically ill patientsK23AI143882 · NIAID · MAYO CLINIC ROCHESTER · PI BARRETO, ERIN FRAZEE · 2020 to 2024
$986k
NIAID NIH HHS K23 AI143882
6 · The paper itself

Abstract

backgroundSerum cystatin C-based estimated glomerular filtration rate (eGFRcys) generally associates with clinical outcomes better than serum creatinine-based eGFR (eGFRcr) despite similar precision in estimating measured GFR (mGFR). We sought to determine whether the risk of adverse outcomes with eGFRcr or eGFRcys was via GFR alone or also via non-GFR determinants among kidney transplant recipients.

methodsConsecutive adult kidney transplant recipients underwent a standardized GFR assessment during a routine follow-up clinic visit between 2011 and 2013. Patients were followed for graft failure or the composite outcome of cardiovascular (CV) events or mortality through 2020. The risk of these events by baseline mGFR, eGFRcr and eGFRcys was assessed unadjusted, adjusted for mGFR and adjusted for CV risk factors.

resultsThere were 1135 recipients with a mean baseline mGFR of 55.6, eGFRcr of 54.8 and eGFRcys of 46.8 ml/min/1.73 m2 and a median follow-up of 6 years. Each 10 ml/min/1.73 m2 decrease in mGFR, eGFRcr or eGFRcys associated with graft failure [hazard ratio (HR) 1.79, 1.68 and 2.07, respectively; P < .001 for all) and CV events or mortality outcome (HR 1.28, 1.19 and 1.43, respectively; P < .001 for all). After adjusting for mGFR, eGFRcys associated with graft failure (HR 1.57, P < .001) and CV events or mortality (HR 1.49, P < .001), but eGFRcr did not associate with either. After further adjusting for CV risk factors, risk of these outcomes with lower eGFRcys was attenuated.

conclusioneGFRcr better represents the true relationship between GFR and outcomes after kidney transplantation because it has less non-GFR residual association. Cystatin C is better interpreted as a nonspecific prognostic biomarker than is eGFR in the kidney transplant setting.

Indexed as

Kidney TransplantationRenal Insufficiency, ChronicAdultCreatinineCystatin CGlomerular Filtration RateHumansCreatinineCystatin Ccreatininecystatin CeGFRGFRkidney transplant

Identifiers

PMID36646435
PMCPMC10387404
OpenAlexW4316591685

What OpenQuestion holds

Textmetadata
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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.