1
|
Lamb EJ, Barratt J, Brettell EA, Cockwell P, Dalton RN, Deeks JJ, Eaglestone G, Pellatt-Higgins T, Kalra PA, Khunti K, Loud FC, Ottridge RS, Potter A, Rowe C, Scandrett K, Sitch AJ, Stevens PE, Sharpe CC, Shinkins B, Smith A, Sutton AJ, Taal MW. Accuracy of glomerular filtration rate estimation using creatinine and cystatin C for identifying and monitoring moderate chronic kidney disease: the eGFR-C study. Health Technol Assess 2024; 28:1-169. [PMID: 39056437 DOI: 10.3310/hyhn1078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2024] Open
Abstract
Background Estimation of glomerular filtration rate using equations based on creatinine is widely used to manage chronic kidney disease. In the UK, the Chronic Kidney Disease Epidemiology Collaboration creatinine equation is recommended. Other published equations using cystatin C, an alternative marker of kidney function, have not gained widespread clinical acceptance. Given higher cost of cystatin C, its clinical utility should be validated before widespread introduction into the NHS. Objectives Primary objectives were to: (1) compare accuracy of glomerular filtration rate equations at baseline and longitudinally in people with stage 3 chronic kidney disease, and test whether accuracy is affected by ethnicity, diabetes, albuminuria and other characteristics; (2) establish the reference change value for significant glomerular filtration rate changes; (3) model disease progression; and (4) explore comparative cost-effectiveness of kidney disease monitoring strategies. Design A longitudinal, prospective study was designed to: (1) assess accuracy of glomerular filtration rate equations at baseline (n = 1167) and their ability to detect change over 3 years (n = 875); (2) model disease progression predictors in 278 individuals who received additional measurements; (3) quantify glomerular filtration rate variability components (n = 20); and (4) develop a measurement model analysis to compare different monitoring strategy costs (n = 875). Setting Primary, secondary and tertiary care. Participants Adults (≥ 18 years) with stage 3 chronic kidney disease. Interventions Estimated glomerular filtration rate using the Chronic Kidney Disease Epidemiology Collaboration and Modification of Diet in Renal Disease equations. Main outcome measures Measured glomerular filtration rate was the reference against which estimating equations were compared with accuracy being expressed as P30 (percentage of values within 30% of reference) and progression (variously defined) studied as sensitivity/specificity. A regression model of disease progression was developed and differences for risk factors estimated. Biological variation components were measured and the reference change value calculated. Comparative costs of monitoring with different estimating equations modelled over 10 years were calculated. Results Accuracy (P30) of all equations was ≥ 89.5%: the combined creatinine-cystatin equation (94.9%) was superior (p < 0.001) to other equations. Within each equation, no differences in P30 were seen across categories of age, gender, diabetes, albuminuria, body mass index, kidney function level and ethnicity. All equations showed poor (< 63%) sensitivity for detecting patients showing kidney function decline crossing clinically significant thresholds (e.g. a 25% decline in function). Consequently, the additional cost of monitoring kidney function annually using a cystatin C-based equation could not be justified (incremental cost per patient over 10 years = £43.32). Modelling data showed association between higher albuminuria and faster decline in measured and creatinine-estimated glomerular filtration rate. Reference change values for measured glomerular filtration rate (%, positive/negative) were 21.5/-17.7, with lower reference change values for estimated glomerular filtration rate. Limitations Recruitment of people from South Asian and African-Caribbean backgrounds was below the study target. Future work Prospective studies of the value of cystatin C as a risk marker in chronic kidney disease should be undertaken. Conclusions Inclusion of cystatin C in glomerular filtration rate-estimating equations marginally improved accuracy but not detection of disease progression. Our data do not support cystatin C use for monitoring of glomerular filtration rate in stage 3 chronic kidney disease. Trial registration This trial is registered as ISRCTN42955626. Funding This award was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme (NIHR award ref: 11/103/01) and is published in full in Health Technology Assessment; Vol. 28, No. 35. See the NIHR Funding and Awards website for further award information.
Collapse
Affiliation(s)
- Edmund J Lamb
- Clinical Biochemistry, East Kent Hospitals University NHS Foundation Trust, Canterbury, UK
| | - Jonathan Barratt
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Elizabeth A Brettell
- Birmingham Clinical Trials Unit, Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Paul Cockwell
- Renal Medicine, Queen Elizabeth Hospital Birmingham and Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - R Nei Dalton
- WellChild Laboratory, Evelina London Children's Hospital, St. Thomas' Hospital, London, UK
| | - Jon J Deeks
- Birmingham Clinical Trials Unit, Institute of Applied Health Research, University of Birmingham, Birmingham, UK
- Test Evaluation Research Group, Institute of Applied Health Research, University of Birmingham, Birmingham, UK
- NIHR Birmingham Biomedical Research Centre, University of Birmingham and University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Gillian Eaglestone
- Kent Kidney Care Centre, East Kent Hospitals University NHS Foundation Trust, Kent, UK
| | | | - Philip A Kalra
- Department of Renal Medicine, Salford Royal Hospital Northern Care Alliance NHS Foundation Trust, Salford, UK
| | - Kamlesh Khunti
- Diabetes Research Centre, University of Leicester, Leicester, UK
| | | | - Ryan S Ottridge
- Birmingham Clinical Trials Unit, Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Aisling Potter
- Clinical Biochemistry, East Kent Hospitals University NHS Foundation Trust, Canterbury, UK
| | - Ceri Rowe
- Clinical Biochemistry, East Kent Hospitals University NHS Foundation Trust, Canterbury, UK
| | - Katie Scandrett
- Test Evaluation Research Group, Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Alice J Sitch
- Test Evaluation Research Group, Institute of Applied Health Research, University of Birmingham, Birmingham, UK
- NIHR Birmingham Biomedical Research Centre, University of Birmingham and University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Paul E Stevens
- Kent Kidney Care Centre, East Kent Hospitals University NHS Foundation Trust, Kent, UK
| | - Claire C Sharpe
- Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Bethany Shinkins
- Academic Unit of Health Economics, Leeds Institute of Health Sciences, University of Leeds, Leeds, UK
| | - Alison Smith
- Academic Unit of Health Economics, Leeds Institute of Health Sciences, University of Leeds, Leeds, UK
| | - Andrew J Sutton
- Academic Unit of Health Economics, Leeds Institute of Health Sciences, University of Leeds, Leeds, UK
| | - Maarten W Taal
- Department of Renal Medicine, University Hospitals of Derby and Burton NHS Foundation Trust, Derby, UK
| |
Collapse
|
2
|
Delanaye P, Pottel H, Cavalier E, Flamant M, Stehlé T, Mariat C. Diagnostic standard: assessing glomerular filtration rate. Nephrol Dial Transplant 2024; 39:1088-1096. [PMID: 37950562 DOI: 10.1093/ndt/gfad241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Indexed: 11/12/2023] Open
Abstract
Creatinine-based estimated glomerular filtration rate (eGFR) is imprecise at individual level, due to non-GFR-related serum creatinine determinants, including atypical muscle mass. Cystatin C has the advantage of being independent of muscle mass, a feature that led to the development of race- and sex-free equations. Yet, cystatin C-based equations do not perform better than creatinine-based equations for estimating GFR unless both variables are included together. The new race-free Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation had slight opposite biases between Black and non-Black subjects in the USA, but has poorer performance than that the previous version in European populations. The European Kidney Function Consortium (EKFC) equation developed in 2021 can be used in both children and adults, is more accurate in young and old adults, and is applicable to non-white European populations, by rescaling the Q factor, i.e. population median creatinine, in a potentially universal way. A sex- and race-free cystatin C-based EKFC, with the same mathematical design, has also be defined. New developments in the field of GFR estimation would be standardization of cystatin C assays, development of creatinine-based eGFR equations that incorporate muscle mass data, implementation of new endogenous biomarkers and the use of artificial intelligence. Standardization of different GFR measurement methods would also be a future challenge, as well as new technologies for measuring GFR. Future research is also needed into discrepancies between cystatin C and creatinine, which is associated with high risk of adverse events: we need to standardize the definition of discrepancy and understand its determinants.
Collapse
Affiliation(s)
- Pierre Delanaye
- Department of Nephrology-Dialysis-Transplantation, University of Liège (ULiege), CHU Sart Tilman, Liège, Belgium
- Department of Nephrology-Dialysis-Apheresis, Hôpital Universitaire Carémeau, Nîmes, France
| | - Hans Pottel
- Department of Public Health and Primary Care, KU Leuven Campus Kulak Kortrijk, Kortrijk, Belgium
| | - Etienne Cavalier
- Department of Clinical Chemistry, University of Liège (ULiege), CHU Sart Tilman, Liège, Belgium
| | - Martin Flamant
- Assistance Publique-Hôpitaux de Paris, Bichat Hospital, and Université Paris Cité, UMR 1149, Paris, France
| | - Thomas Stehlé
- Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Henri Mondor, Service de Néphrologie et Transplantation, Fédération Hospitalo-Universitaire « Innovative therapy for immune disorders », Créteil, France
| | - Christophe Mariat
- Service de Néphrologie, Dialyse et Transplantation Rénale, Hôpital Nord, CHU de Saint-Etienne, France
| |
Collapse
|
3
|
Nyman U, Björk J, Delanaye P, Lahens A, Pottel H, Vidal-Petiot E, Flamant M. Rescaling creatinine makes GFR estimation equations generally applicable across populations - validation results for the Lund-Malmö equation in a French cohort of sub-Saharan ancestry. Clin Chem Lab Med 2024; 62:421-427. [PMID: 37768854 DOI: 10.1515/cclm-2023-0496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 09/18/2023] [Indexed: 09/30/2023]
Abstract
OBJECTIVES To make glomerular filtration rate (GFR) estimating equations applicable across populations with different creatinine generation by using rescaled serum creatinine (sCr/Q) where sCr represents the individual creatinine level and Q the average creatinine value in healthy persons of the same population. METHODS GFR measurements (mGFR, plasma clearance of 51Cr-EDTA) were conducted in 964 adult Black Europeans. We established the re-expressed Lund-Malmö revised equation (r-LMR) by replacing serum creatinine (sCr) with rescaled creatinine sCr/Q. We evaluated the r-LMR equation based on Q-values of White Europeans (r-LMRQ-white; Q-values females: 62 μmol/L, males: 80 μmol/L) and Black Europeans (r-LMRQ-Black; Q-values females: 65 μmol/L, males: 90 μmol/L), and the European Kidney Function Consortium equation (EKFCQ-White and EKFCQ-Black) regarding bias, precision (interquartile range, IQR) and accuracy (percentage of estimates within ±10 % [P10] and ±30 % [P30] of mGFR). RESULTS Median bias of r-LMRQ-White/r-LMRQ-Black/EKFCQ-White/EKFCQ-Black were -9.1/-4.5/-6.3/-0.9 mL/min/1.73 m2, IQR 14.7/14.5/14.5/15.6 mL/min/1.73 m2, P10 25.1 %/34.8 %/30.3 %/37.2 % and P30 74.2 %/84.1 %/80.6 %/83.6 %. The improvement of bias and accuracy when using proper Q-values was most pronounced in men. Similar improvements were obtained above and below mGFR 60 mL/min/1.73 m2 and at various age and BMI intervals, except for BMI<20 kg/m2 where bias increased, and accuracy decreased. CONCLUSIONS GFR estimating equations may be re-expressed to include rescaled creatinine (sCr/Q) and used across populations with different creatinine generation if population-specific average creatinine concentrations (Q-values) for healthy persons are established.
Collapse
Affiliation(s)
- Ulf Nyman
- Department of Translational Medicine, Division of Medical Radiology, Lund University, Malmö, Sweden
| | - Jonas Björk
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
- Clinical Studies Sweden, Forum South, Skåne University Hospital, Lund, Sweden
| | - Pierre Delanaye
- Department of Nephrology-Dialysis-Transplantation, University of Liège, CHU Sart Tilman, Liège, Belgium
- Department of Nephrology-Dialysis-Apheresis, Hôpital Universitaire Carémeau, Nîmes, France
| | - Alexandre Lahens
- Assistance Publique-Hôpitaux de Paris, Renal Physiology Unit, Bichat Hospital Paris, France
| | - Hans Pottel
- Department of Public Health and Primary Care, KU Leuven Campus Kulak Kortrijk, Kortrijk, Belgium
| | - Emmanuelle Vidal-Petiot
- Assistance Publique-Hôpitaux de Paris, Renal Physiology Unit, Bichat Hospital Paris, France
- Université Paris Cité and Université Sorbonne Paris Nord, INSERM U1148, LVTS Paris, France
| | - Martin Flamant
- Assistance Publique-Hôpitaux de Paris, Renal Physiology Unit, Bichat Hospital Paris, France
- Université Paris Cité, INSERM U1149, Center for Research on Inflammation Paris, France
| |
Collapse
|
4
|
Vernooij RWM, van Ommen ALN, Valstar GB, Cramer MJ, Teske AJ, Menken R, Hofstra L, Rutten FH, Bots ML, den Ruijter HM, Verhaar MC. Association of mild kidney dysfunction with diastolic dysfunction and heart failure with preserved ejection fraction. ESC Heart Fail 2024; 11:315-326. [PMID: 38011017 PMCID: PMC10804207 DOI: 10.1002/ehf2.14511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 07/13/2023] [Accepted: 08/10/2023] [Indexed: 11/29/2023] Open
Abstract
AIMS We aim to investigate the association between kidney dysfunction and left ventricular diastolic dysfunction parameters and heart failure with preserved ejection fraction (HFpEF) and whether this is sex-specific. METHODS AND RESULTS We included participants from the HELPFul observational study. Outpatient clinical care data, including echocardiography, and an expert panel judgement on HFpEF was collected. Estimated glomerular filtration rate (eGFR) was calculated by creatinine and cystatin C without race. The association between eGFR with E/e', left ventricular mass index, relative wall thickness, and stage C/D heart failure was tested by multivariable adjusted regression models, stratified by sex, reporting odds ratios and 95% confidence intervals (95% confidence interval). We analysed 880 participants, mean age 62.9 (standard deviation: 9.3) years, 69% female. Four hundred six participants had mild (37.6%) kidney dysfunction (eGFR: 60-89 mL/min/1.73 m2 ) or moderate (8.5%) kidney dysfunction (eGFR: 30-59 mL/min/1.73 m2 ). HFpEF was significantly more prevalent in participants with mild and moderate kidney dysfunction (10.3% and 16.0%, respectively) than participants with normal kidney function (3.4%). A lower kidney function was associated with higher E/e' and higher relative wall thickness values. Participants with moderate kidney dysfunction had a higher likelihood of American College of Cardiology/American Heart Association stage C/D HF (odds ratio: 2.07, 95% confidence interval: 1.23, 3.49) than participants with normal kidney functions. CONCLUSIONS Both mild and moderate kidney dysfunction are independently associated with left ventricular diastolic dysfunction parameters and HFpEF. This association is independent of sex and strongest for moderate kidney dysfunction. Considering mild-to-moderate kidney dysfunction as risk factor for HFpEF may help identify high-risk groups benefiting most from early intervention.
Collapse
Affiliation(s)
- Robin W. M. Vernooij
- Department of Nephrology and Hypertension, University Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
- Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Anne‐Mar L. N. van Ommen
- Laboratory of Experimental Cardiology, University Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Gideon B. Valstar
- Laboratory of Experimental Cardiology, University Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Maarten Jan Cramer
- Department of CardiologyUniversity Medical Center UtrechtUtrechtThe Netherlands
| | - Arco J. Teske
- Department of CardiologyUniversity Medical Center UtrechtUtrechtThe Netherlands
| | - Roxana Menken
- Cardiology Centers of the NetherlandsUtrechtThe Netherlands
| | - Leo Hofstra
- Cardiology Centers of the NetherlandsUtrechtThe Netherlands
| | - Frans H. Rutten
- Department of General Practice, Julius Center for Health Sciences and Primary Care, University Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Michiel L. Bots
- Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Hester M. den Ruijter
- Laboratory of Experimental Cardiology, University Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Marianne C. Verhaar
- Department of Nephrology and Hypertension, University Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| |
Collapse
|
5
|
Gama R, Javeria Peracha, Kate Bramham, Cockwell P. Removal of ethnicity adjustment for creatinine-based estimated glomerular filtration rate equations. Ann Clin Biochem 2024; 61:8-18. [PMID: 36550595 DOI: 10.1177/00045632221149660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Creatinine-based estimated glomerular filtration rate equations (eGFRcreatinine) are used to measure excretory kidney function in clinical practice. Despite inter and intra-patient variability, eGFRcreatinine has excellent clinical utility and provides the basis for the classification system for chronic kidney disease (CKD), for kidney function monitoring, treatment interventions and referral pathways. The 4-variable modification of diet in renal disease (MDRD) eGFRcreatinine equation was introduced in 2000 and recommended by the National Institute for Health and Care Excellence (NICE) in 2008. Subsequently, the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) eGFRcreatinine equation was introduced in 2009 and is more accurate than MDRD in patients with mild and moderate CKD. In 2014, NICE recommended that CKD-EPI eGFRcreatinine replace MDRD eGFRcreatinine in routine clinical practice across England. Both equations originally incorporated adjustments for age, gender and ethnicity. However, the evidence for ethnicity adjustment has been increasingly questioned, and in 2021 NICE recommended that kidney function should be estimated by CKD-EPI eGFRcreatinine without using ethnicity adjustment. Recently, a CKD-EPI equation has been presented without ethnicity adjustment; however, this has not been validated outside of North America and NICE continues to recommend CKD-EPI 2009. We review the status of eGFRcreatinine in clinical practice, including the limitations of eGFRcreatinine and the rationale for removal of ethnicity adjustment and the potential impact of this change on clinical care for patients with kidney disease.
Collapse
Affiliation(s)
- Rouvick Gama
- King's Kidney Care, King's College Hospital NHS Foundation Trust, London, UK
| | - Javeria Peracha
- Renal Unit, The Royal Wolverhampton NHS Trust, Wolverhampton, UK
| | - Kate Bramham
- King's Kidney Care, King's College Hospital NHS Foundation Trust, London, UK
- Department of Renal Sciences, King's College London, London, UK
| | - Paul Cockwell
- Department of Nephrology, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust and Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| |
Collapse
|
6
|
Shetty NS, Parcha V, Patel N, Pampana A, Kalra R, Pandey A, Li P, Morris AA, Prabhu SD, Arora G, Arora P. Incident Heart Failure Risk Reclassification With Race-Independent Estimated Glomerular Filtration Rate: A National Heart, Lung, and Blood Institute Pooled Cohorts Analysis. J Card Fail 2024; 30:14-22. [PMID: 37543186 PMCID: PMC10838360 DOI: 10.1016/j.cardfail.2023.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/30/2023] [Accepted: 07/13/2023] [Indexed: 08/07/2023]
Abstract
BACKGROUND This study compared the predictive value of the race-independent creatinine- and cystatin C-based estimated glomerular filtration rate (eGFRcr-cys) and the race-dependent creatinine-based eGFR (eGFRcr) for incident heart failure (HF). METHODS This study combined the participant-level data from ARIC (Atherosclerosis Risk in Communities) (visit 4) and MESA (Multi-Ethnic Study of Atherosclerosis) (visit 1) to calculate eGFRcr-cys and eGFRcr. The primary outcome of the study was adjudicated incident HF over a follow-up period of 10 years. Multivariable Cox models were used to assess the risk of incident HF with the quartiles of eGFRcr-cys and eGFRcr. RESULTS Among 15,615 individuals (median age: 62 [57-68] years; 55.0% females; 23.9% Black), the median eGFRcr-cys and eGFRcr were 91.4 (79.4, 102.0) mL/min/1.73m2 and 84.7 (72.0, 94.7) mL/min/1.73m2, respectively. Compared with the fourth quartile of eGFRcr-cys, the hazard ratio for incident HF was 1.02 (95% CI:0.80-1.30) in the third quartile, 1.02 (95% CI:0.80-1.30) in the second quartile, and 1.47 (95% CI:1.16-1.86) in the first quartile. Compared with the 4th quartile of the eGFRcr, the risk of incident HF was similar in the 3rd (HRadj:0.90 [95% CI:0.73-1.12]), 2nd (HRadj: 0.96 [95% CI:0.77-1.20]), and 1st (HRadj:1.15 [95% CI:0.93-1.44]) quartiles. C-statistics were similar for the multivariable-adjusted Cox models for incident HF using eGFRcr (0.80 [0.79-0.81]) and eGFRcr-cys (0.80 [0.79-0.82]). CONCLUSION The eGFRcr and eGFRcr-cys had comparable predictive values for incident HF.
Collapse
Affiliation(s)
- Naman S Shetty
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL
| | - Vibhu Parcha
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL
| | - Nirav Patel
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL
| | - Akhil Pampana
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL
| | - Rajat Kalra
- Cardiovascular Division, University of Minnesota, Minneapolis, MN
| | - Ambarish Pandey
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX
| | - Peng Li
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL
| | - Alanna A Morris
- Division of Cardiology, Emory University School of Medicine, Atlanta, GA
| | - Sumanth D Prabhu
- Division of Cardiology, Washington University in St. Louis School of Medicine, St. Louis, MO
| | - Garima Arora
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL
| | - Pankaj Arora
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL; Section of Cardiology, Birmingham Veterans Affairs Medical Center, Birmingham, AL.
| |
Collapse
|
7
|
Kasozi RN, Meeusen JW, Lieske JC. Estimating glomerular filtration rate with new equations: can one size ever fit all? Crit Rev Clin Lab Sci 2023; 60:549-559. [PMID: 37259709 PMCID: PMC10592396 DOI: 10.1080/10408363.2023.2214812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/25/2023] [Accepted: 05/13/2023] [Indexed: 06/02/2023]
Abstract
Glomerular filtration rate (GFR) is thought to be the best overall indicator of kidney health. On an individual patient basis, a working knowledge of GFR is important to understand the future risk for chronic kidney disease (CKD) progression, enhanced risk for cardiovascular disease and death, and for optimal medical management including the dosing of certain drugs. Although GFR can be directly measured using exogenous compounds that are eliminated by the kidney, these methods are not scalable for repeated and routine use in clinical care. Thus, in most circumstances GFR is estimated, termed estimated GFR (eGFR), using serum biomarkers that are eliminated by the kidney. Of these, serum creatinine, and to a lesser extent cystatin C, are most widely employed. However, the resulting number is simply a population average for an individual of that age and sex with a given serum creatinine and/or cystatin C, while the range of potential GFR values is actually quite large. Thus, it is important to consider characteristics of a given patient that might make this estimate better or worse in a particular case. In some circumstances, cystatin C or creatinine might be the better choice. Ultimately it is difficult, if not impossible, to have an eGFR equation that performs equally well in all populations. Thus, in certain cases it might be appropriate to directly measure GFR for high consequence medical decision-making, such as approval for kidney donation or prior to certain chemotherapeutic regimens. In all cases, the eGFR thresholds of CKD stage should not be viewed as absolute numbers. Thus, clinical care should not be determined solely by CKD stage as determined by eGFR alone, but rather by the combination of an individual patient's likely kidney function together with their current clinical situation.
Collapse
Affiliation(s)
- Ramla N. Kasozi
- Department of Family Medicine, Mayo Clinic, Jacksonville, FL
| | - Jeffrey W. Meeusen
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - John C. Lieske
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
- Department of Internal Medicine, Division of Nephrology and Hypertension Mayo Clinic, Rochester, MN
| |
Collapse
|
8
|
Cary MP, Zink A, Wei S, Olson A, Yan M, Senior R, Bessias S, Gadhoumi K, Jean-Pierre G, Wang D, Ledbetter LS, Economou-Zavlanos NJ, Obermeyer Z, Pencina MJ. Mitigating Racial And Ethnic Bias And Advancing Health Equity In Clinical Algorithms: A Scoping Review. Health Aff (Millwood) 2023; 42:1359-1368. [PMID: 37782868 PMCID: PMC10668606 DOI: 10.1377/hlthaff.2023.00553] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
In August 2022 the Department of Health and Human Services (HHS) issued a notice of proposed rulemaking prohibiting covered entities, which include health care providers and health plans, from discriminating against individuals when using clinical algorithms in decision making. However, HHS did not provide specific guidelines on how covered entities should prevent discrimination. We conducted a scoping review of literature published during the period 2011-22 to identify health care applications, frameworks, reviews and perspectives, and assessment tools that identify and mitigate bias in clinical algorithms, with a specific focus on racial and ethnic bias. Our scoping review encompassed 109 articles comprising 45 empirical health care applications that included tools tested in health care settings, 16 frameworks, and 48 reviews and perspectives. We identified a wide range of technical, operational, and systemwide bias mitigation strategies for clinical algorithms, but there was no consensus in the literature on a single best practice that covered entities could employ to meet the HHS requirements. Future research should identify optimal bias mitigation methods for various scenarios, depending on factors such as patient population, clinical setting, algorithm design, and types of bias to be addressed.
Collapse
Affiliation(s)
- Michael P Cary
- Michael P. Cary Jr. , Duke University, Durham, North Carolina
| | - Anna Zink
- Anna Zink, University of Chicago, Chicago, Illinois
| | - Sijia Wei
- Sijia Wei, Northwestern University, Chicago, Illinois
| | | | | | | | | | | | | | | | | | | | - Ziad Obermeyer
- Ziad Obermeyer, University of California Berkeley, Berkeley, California
| | | |
Collapse
|
9
|
Lu S, Robyak K, Zhu Y. The CKD-EPI 2021 Equation and Other Creatinine-Based Race-Independent eGFR Equations in Chronic Kidney Disease Diagnosis and Staging. J Appl Lab Med 2023; 8:952-961. [PMID: 37534520 DOI: 10.1093/jalm/jfad047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 06/09/2023] [Indexed: 08/04/2023]
Abstract
BACKGROUND Recent debate on the race correction factor in creatinine-based estimated glomerular filtration rate (eGFR) has led to the development of a new race-independent equation (Chronic Kidney Disease Epidemiology Collaboration, CKD-EPI_2021). Previously, some institutions have already modified the early version of the CKD-EPI or Modification of Diet in Renal Disease (MDRD) equations by removing the race factors (CKD-EPI_2009_non-Black (NB), MDRD_NB) for Black populations although this approach remains controversial. METHODS In this study, the CKD-EPI_2009_NB, MDRD_NB, and European Kidney Function Consortium (EKFC) equations were compared directly with the CKD-EPI_2021 equation in eGFR calculation, chronic kidney disease (CKD) diagnosis, and staging in a local population. RESULTS These 3 previous methods underestimated eGFR compared to CKD-EPI_2021 for eGFR < 90 mL/min/1.73 m2 but overestimated eGFR at the high end (>120 mL/min/1.73 m2). Around the CKD diagnosis cutoff (60 mL/min/1.73 m2), both MDRD_NB and EFKC equations resulted in an increase in CKD cases compared to CKD-EPI_2021. CKD-EPI_2009_NB demonstrated a similar trend although the difference was not statistically significant. In a population with low eGFR (<60 mL/min/1.73 m2), the EKFC equation showed a CKD staging pattern significantly different from that by CKD-EPI_2021, but all 3 previous methods resulted in a similar number of end-stage renal failure cases. In general, the EKFC equation demonstrated a weaker agreement in eGFR calculation and concordance in classification with the CKD-EPI_2021 equation than MDRD_NB and CKD-EPI_2009_NB. CONCLUSIONS Our study provides a direct visual comparison to demonstrate the potential clinical impact between 3 previously used race-independent methods and the CKD-EPI_2021 equation and aids the communication with healthcare providers during the implementation of this new equation.
Collapse
Affiliation(s)
- Song Lu
- Department of Pathology and Laboratory Medicine, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Kimberly Robyak
- Department of Pathology and Laboratory Medicine, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Yusheng Zhu
- Department of Pathology and Laboratory Medicine, Pennsylvania State University College of Medicine, Hershey, PA, United States
| |
Collapse
|
10
|
Williams P. Retaining Race in Chronic Kidney Disease Diagnosis and Treatment. Cureus 2023; 15:e45054. [PMID: 37701164 PMCID: PMC10495104 DOI: 10.7759/cureus.45054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2023] [Indexed: 09/14/2023] Open
Abstract
The best overall measure of kidney function is glomerular filtration rate (GFR) as commonly estimated from serum creatinine concentrations (eGFRcr) using formulas that correct for the higher average creatinine concentrations in Blacks. After two decades of use, these formulas have come under scrutiny for estimating GFR differently in Blacks and non-Blacks. Discussions of whether to include race (Black vs. non-Black) in the calculation of eGFRcr fail to acknowledge that the original race-based eGFRcr provided the same CKD treatment recommendations for Blacks and non-Blacks based on directly (exogenously) measured GFR. Nevertheless, the National Kidney Foundation and the American Society of Nephrology Task Force on Reassessing the Inclusion of Race in Diagnosing Kidney Disease removed race in CKD treatment guidelines and pushed for the immediate adoption of a race-free eGFRcr formula by physicians and clinical laboratories. This formula is projected to negate CKD in 5.51 million White and other non-Black adults and reclassify CKD to less severe stages in another 4.59 million non-Blacks, in order to expand treatment eligibility to 434,000 Blacks not previously diagnosed and to 584,000 Blacks previously diagnosed with less severe CKD. This review examines: 1) the validity of the arguments for removing the original race correction, and 2) the performance of the proposed replacement formula. Excluding race in the derivation of eGFRcr changed the statistical bias from +3.7 to -3.6 ml/min/1.73m2 in Blacks and from +0.5 to +3.9 in non-Blacks, i.e., promoting CKD diagnosis in Blacks at the cost of restricting diagnosis in non-Blacks. By doing so, the revised eGFRcr greatly exaggerates the purported racial disparity in CKD burden. Claims that the revised formulas identify heretofore undiagnosed CKD in Blacks are not supported when studies that used kidney failure replacement therapy and mortality are interpreted as proxies for baseline CKD. Alternatively, a race-stratified eGFRcr (i.e., separate equations for Blacks and non-Blacks) would provide the least biased eGFRcr for both Blacks and non-Blacks and the best medical treatment for all patients.
Collapse
Affiliation(s)
- Paul Williams
- Life Sciences, Lawrence Berkeley National Laboratory, Berkeley, USA
| |
Collapse
|
11
|
Malmgren L, Grubb A. Muscle mass, creatinine, cystatin C and selective glomerular hypofiltration syndromes. Clin Kidney J 2023; 16:1206-1210. [PMID: 37529657 PMCID: PMC10387400 DOI: 10.1093/ckj/sfad086] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Indexed: 08/03/2023] Open
Abstract
In this issue of Clinical Kidney Journal, Stehlé and colleagues demonstrate that estimation of glomerular filtration rate (GFR) by use of creatinine and a measure, total lumbar muscle cross-sectional area, reflecting the total muscle mass of an individual, is superior to GFR-estimating equations based upon creatinine and demographic variables. The report by Stehlé et al. demonstrates one solution to the interference of muscle mass in the use of creatinine to estimate GFR. This interference was identified already at the start, in 1959, of using creatinine for estimation of GFR. Different ways of taking the muscle mass into account when creatinine-based estimations of GFR have been used generally include use of controversial race and sex coefficients. A new marker of GFR, cystatin C, introduced in 1979, has been shown to be virtually uninfluenced by muscle mass. In this editorial, the simultaneous use of creatinine and cystatin C to estimate GFR, muscle mass and selective glomerular hypofiltration syndromes is described.
Collapse
Affiliation(s)
- Linnea Malmgren
- Department of Clinical Sciences Malmö, Clinical and Molecular Osteoporosis Research Unit, Lund University, Malmö, Sweden
- Department of Geriatrics, Skåne University Hospital, Malmö, Sweden
| | | |
Collapse
|
12
|
Calvert ND, Kirby A, Suchý M, Pallister P, Torrens AA, Burger D, Melkus G, Schieda N, Shuhendler AJ. Direct mapping of kidney function by DCE-MRI urography using a tetrazinanone organic radical contrast agent. Nat Commun 2023; 14:3965. [PMID: 37407664 DOI: 10.1038/s41467-023-39720-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 06/27/2023] [Indexed: 07/07/2023] Open
Abstract
Chronic kidney disease (CKD) and acute kidney injury (AKI) are ongoing global health burdens. Glomerular filtration rate (GFR) is the gold standard measure of kidney function, with clinical estimates providing a global assessment of kidney health without spatial information of kidney- or region-specific dysfunction. The addition of dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) to the anatomical imaging already performed would yield a 'one-stop-shop' for renal assessment in cases of suspected AKI and CKD. Towards urography by DCE-MRI, we evaluated a class of nitrogen-centered organic radicals known as verdazyls, which are extremely stable even in highly reducing environments. A glucose-modified verdazyl, glucoverdazyl, provided contrast limited to kidney and bladder, affording functional kidney evaluation in mouse models of unilateral ureteral obstruction (UUO) and folic acid-induced nephropathy (FAN). Imaging outcomes correlated with histology and hematology assessing kidney dysfunction, and glucoverdazyl clearance rates were found to be a reliable surrogate measure of GFR.
Collapse
Affiliation(s)
- Nicholas D Calvert
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 150 Louis Pasteur Pvt., Ottawa, Ontario, K1N 6N5, Canada
| | - Alexia Kirby
- Department of Biology, University of Ottawa, 150 Louis Pasteur Pvt., Ottawa, Ontario, K1N 6N5, Canada
| | - Mojmír Suchý
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 150 Louis Pasteur Pvt., Ottawa, Ontario, K1N 6N5, Canada
| | - Peter Pallister
- Department of Chemistry, Carleton University, 1125 Colonel By Dr., Ottawa, Ontario, K1S 5B6, Canada
| | - Aidan A Torrens
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 150 Louis Pasteur Pvt., Ottawa, Ontario, K1N 6N5, Canada
| | - Dylan Burger
- Kidney Research Center, Ottawa Hospital Research Institute, University of Ottawa, 501 Smyth Rd, Ottawa, Ontario, K1H 8L6, Canada
| | - Gerd Melkus
- Dept. Medical Imaging, The Ottawa Hospital, 501 Smyth Rd, Ottawa, Ontario, K1H 8L6, Canada
- Dept. Radiology, University of Ottawa, 501 Smyth Rd, Ottawa, Ontario, K1H 8L6, Canada
| | - Nicola Schieda
- Dept. Radiology, University of Ottawa, 501 Smyth Rd, Ottawa, Ontario, K1H 8L6, Canada
| | - Adam J Shuhendler
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 150 Louis Pasteur Pvt., Ottawa, Ontario, K1N 6N5, Canada.
- Department of Biology, University of Ottawa, 150 Louis Pasteur Pvt., Ottawa, Ontario, K1N 6N5, Canada.
- University of Ottawa Heart Institute, 40 Ruskin St., Ottawa, Ontario, K1Y 4W7, Canada.
| |
Collapse
|
13
|
Giron-Luque F, Garcia-Lopez A, Baez-Suarez Y, Patino-Jaramillo N. Comparison of Three Glomerular Filtration Rate Estimating Equations with 24-Hour Urine Creatinine Clearance Measurement in Potential Living Kidney Donors. Int J Nephrol 2023; 2023:2022641. [PMID: 37363695 PMCID: PMC10287525 DOI: 10.1155/2023/2022641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 05/11/2023] [Accepted: 05/30/2023] [Indexed: 06/28/2023] Open
Abstract
Background The accuracy of the measurement of renal function in potential living kidney donors (PLKD) is essential. The direct measurement of glomerular filtration rate (mGFR) has been considered the "gold standard." The estimated GFR (eGFR) with 24-hour urinary creatinine clearance (CrCl) is frequently used because of its availability. We aim to evaluate the correlation and agreement of eGFR using serum-based creatinine formulas (Cockcroft-Gault, MDRD, and CKD-EPI) and the eGFR based on 24-hour urinary CrCl to evaluate kidney function in PLKD. Methods We evaluated the kidney function in 799 PLKD using 24-hour urinary CrCl method and compared the correlation and agreement with the eGFR based on creatinine formulas (Cockcroft-Gault, MDRD, and CKD-EPI). We calculated the mean bias (difference), precision (SD of this difference), accuracy, and performed Bland-Altman plots. Results A total of 799 PLKD were analyzed. The age of the PLKD ranged from 18 to 73 years. Weak to mild correlation was observed between 24-hour urinary CrCl and all formulas (ranged from 0.31 to 0.49). The three equations underestimated the GFR. Using the Bland-Altman graphic, we observed that the CKD-EPI was the least scattered and most precise; however, mean bias and the interval range (limits of agreement) of all formulas were too big to assume equivalence between 24-hour urinary CrCl method and eGFR based on creatinine. Results of mean bias were similar when comparing the three equations in patients with CrCl GFR <60. However, the accuracy of all formulas was better for the female group and the youngest individuals (≤40 years old). Conclusion In this PLKD cohort, of all the three equations, the CKD-EPI was the least scattered and most precise. However, the correlation and the level of agreement between the three equations and 24-hour urinary CrCl were too low to assume the equivalence.
Collapse
Affiliation(s)
| | - Andrea Garcia-Lopez
- Department of Transplant Research, Colombiana de Trasplantes, Bogotá, Colombia
| | - Yenny Baez-Suarez
- Department of Transplant Surgery, Colombiana de Trasplantes, Bogotá, Colombia
| | | |
Collapse
|
14
|
Hunter-Dickson M, Drak D, Anderson M, Shamu T, Chimbetete C, Dahwa R, Gracey DM. Comparison of CG, CKD-EPI[AS] and CKD-EPI[ASR] equations to estimate glomerular filtration rate and predict mortality in treatment naïve people living with HIV in Zimbabwe. BMC Nephrol 2023; 24:129. [PMID: 37158821 PMCID: PMC10169375 DOI: 10.1186/s12882-023-03159-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 04/09/2023] [Indexed: 05/10/2023] Open
Abstract
BACKGROUND Renal impairment in people living with HIV (PWH) in Sub-Saharan Africa is common and associated with increased morbidity and mortality. The ideal equation to estimate glomerular filtration rate (eGFR) in this population remains unclear. That which best predicts clinical risk may be the most appropriate while validation studies are awaited. Here we compare the Cockcroft-Gault (CG), Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI[ASR]) and the CKD-EPI equation with the race coefficient removed (CKD-EPI[AS]), in a population of anti-retroviral therapy (ART) naïve PWH in Zimbabwe to assess which equation best predicts mortality. METHODS A retrospective cohort study of treatment naïve PWH at the Newlands Clinic in Harare, Zimbabwe was completed. The study included all patients commencing ART between 2007 and 2019. Predictors of mortality were assessed by multivariable logistic regression. RESULTS A total of 2991 patients were followed-up for a median of 4.6 years. The cohort was 62.1% female, with 26.1% of patients having at least one comorbidity. The CG equation identified 21.6% of patients as having renal impairment compared with 17.6% with CKD-EPI[AS] and 9.3% with CKD-EPI[ASR]. There was a mortality rate of 9.1% across the study period. The highest mortality risk was seen in those with renal impairment as determined by the CKD-EPI[ASR] equation for both eGFR < 90 and eGFR < 60 with OR 2.97 (95%CI 1.86-4.76) and OR 10.6 (95%CI 3.15-18.04) respectively. CONCLUSION In treatment naïve PWH in Zimbabwe, the CKD-EPI[ASR] equation identifies patients at highest risk of mortality when compared to the CKD-EPI[AS] and CG equations.
Collapse
Affiliation(s)
| | - Douglas Drak
- Central Clinical School, Faculty of Medicine, The University of Sydney, Sydney, Australia
| | - Matthew Anderson
- Department of Renal Medicine, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | | | | | - Rumbidzai Dahwa
- Faculty of Medicine and Health Sciences, University of Zimbabwe, Harare, Zimbabwe
| | - David M Gracey
- Department of Renal Medicine, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
- Central Clinical School, Faculty of Medicine, The University of Sydney, Sydney, Australia
| |
Collapse
|
15
|
Zingano CP, Escott GM, Rocha BM, Porgere IF, Moro CC, Delanaye P, Silveiro SP. 2009 CKD-EPI glomerular filtration rate estimation in Black individuals outside the United States: a systematic review and meta-analysis. Clin Kidney J 2023; 16:322-330. [PMID: 38021375 PMCID: PMC10665997 DOI: 10.1093/ckj/sfac238] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Indexed: 12/01/2023] Open
Abstract
Background The 2009 Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation is the most used equation to estimate glomerular filtration rate (GFR), with race being a factor thereof, increasing GFR by 16% in self-identified Black persons compared with non-Black persons. However, recent publications indicate that it might overestimate GFR for Black adults outside the USA. In this meta-analysis, we assessed the accuracy, evaluated by the percentage of estimated GFR within 30% of measured GFR (P30), of the 2009 CKD-EPI equation in estimating GFR with and without the race coefficient in Black individuals outside the United States of America (USA). Methods We searched MEDLINE and Embase from inception to 9 July 2022, with no language restriction, supplemented by manual reference searches. Studies that assessed the CKD-EPI P30 accuracy with or without the race coefficient in Black adults outside the USA with an adequate method of GFR measurement were included. Data were extracted by independent pairs of reviewers and were pooled using a random-effects model. Results We included 11 studies, with a total of 1834 Black adults from South America, Africa and Europe. The race coefficient in the 2009 CKD-EPI equation significantly decreased P30 accuracy {61.9% [95% confidence interval (CI) 53-70%] versus 72.9% [95% CI 66.7-78.3%]; P = .03}. Conclusions Outside the USA, the 2009 CKD-EPI equation should not be used with the race coefficient, even though the 2009 CKD-EPI equation is not sufficiently accurate either way (<75%). Thus we endorse the Kidney Disease: Improving Global Outcomes guidelines to use exogenous filtration markers when this may impact clinical conduct.
Collapse
Affiliation(s)
- Carolina Pires Zingano
- Graduate Program in Medical Sciences: Endocrinology, Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Diabetes and Metabolism Group, Centro de Pesquisa Clínica, Hospital de Clínicas de Porto Alegre, Porto, Alegre
| | - Gustavo Monteiro Escott
- Graduate Program in Medical Sciences: Endocrinology, Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Diabetes and Metabolism Group, Centro de Pesquisa Clínica, Hospital de Clínicas de Porto Alegre, Porto, Alegre
| | - Bruna Martins Rocha
- Graduate Program in Medical Sciences: Endocrinology, Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Diabetes and Metabolism Group, Centro de Pesquisa Clínica, Hospital de Clínicas de Porto Alegre, Porto, Alegre
| | - Indianara Franciele Porgere
- Graduate Program in Medical Sciences: Endocrinology, Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Diabetes and Metabolism Group, Centro de Pesquisa Clínica, Hospital de Clínicas de Porto Alegre, Porto, Alegre
| | - Candice Cristine Moro
- Graduate Program in Medical Sciences: Endocrinology, Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Diabetes and Metabolism Group, Centro de Pesquisa Clínica, Hospital de Clínicas de Porto Alegre, Porto, Alegre
| | - Pierre Delanaye
- Department of Nephrology, Dialysis, Transplantation, University of Liège, CHU Sart Tilman, Liège, Belgium
- Department of Nephrology-Dialysis-Apheresis, Hôpital Universitaire Carémeau, Nîmes, France
| | - Sandra Pinho Silveiro
- Graduate Program in Medical Sciences: Endocrinology, Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Diabetes and Metabolism Group, Centro de Pesquisa Clínica, Hospital de Clínicas de Porto Alegre, Porto, Alegre
- Division of Endocrinology and Metabolism, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| |
Collapse
|
16
|
Mohottige D, Olabisi O, Boulware LE. Use of Race in Kidney Function Estimation: Lessons Learned and the Path Toward Health Justice. Annu Rev Med 2023; 74:385-400. [PMID: 36706748 DOI: 10.1146/annurev-med-042921-124419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
In 2020, the nephrology community formally interrogated long-standing race-based clinical algorithms used in the field, including the kidney function estimation equations. A comprehensive understanding of the history of kidney function estimation and racial essentialism is necessary to understand underpinnings of the incorporation of a Black race coefficient into prior equations. We provide a review of this history, as well as the considerations used to develop race-free equations that are a guidepost for a more equity-oriented, scientifically rigorous future for kidney function estimation and other clinical algorithms and processes in which race may be embedded as a variable.
Collapse
Affiliation(s)
- Dinushika Mohottige
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA; .,Center for Community and Population Health Improvement, Clinical and Translational Science Institute, Duke University School of Medicine, Durham, North Carolina, USA.,Division of General Internal Medicine, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
| | - Opeyemi Olabisi
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA; .,Duke Molecular Physiology Institute, Duke University, Durham, North Carolina, USA
| | - L Ebony Boulware
- Center for Community and Population Health Improvement, Clinical and Translational Science Institute, Duke University School of Medicine, Durham, North Carolina, USA.,Division of General Internal Medicine, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
| |
Collapse
|
17
|
Delanaye P, Vidal-Petiot E, Björk J, Ebert N, Eriksen BO, Dubourg L, Grubb A, Hansson M, Littmann K, Mariat C, Melsom T, Schaeffner E, Sundin PO, Bökenkamp A, Berg UB, Åsling-Monemi K, Åkesson A, Larsson A, Cavalier E, Dalton RN, Courbebaisse M, Couzi L, Gaillard F, Garrouste C, Jacquemont L, Kamar N, Legendre C, Rostaing L, Stehlé T, Haymann JP, Selistre LDS, Strogoff-de-Matos JP, Bukabau JB, Sumaili EK, Yayo E, Monnet D, Nyman U, Pottel H, Flamant M. Performance of creatinine-based equations to estimate glomerular filtration rate in White and Black populations in Europe, Brazil and Africa. Nephrol Dial Transplant 2023; 38:106-118. [PMID: 36002032 DOI: 10.1093/ndt/gfac241] [Citation(s) in RCA: 36] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND A new Chronic Kidney Disease Epidemiology Collaboration equation without the race variable has been recently proposed (CKD-EPIAS). This equation has neither been validated outside USA nor compared with the new European Kidney Function Consortium (EKFC) and Lund-Malmö Revised (LMREV) equations, developed in European cohorts. METHODS Standardized creatinine and measured glomerular filtration rate (GFR) from the European EKFC cohorts (n = 13 856 including 6031 individuals in the external validation cohort), from France (n = 4429, including 964 Black Europeans), from Brazil (n = 100) and from Africa (n = 508) were used to test the performances of the equations. A matched analysis between White Europeans and Black Africans or Black Europeans was performed. RESULTS In White Europeans (n = 9496), both the EKFC and LMREV equations outperformed CKD-EPIAS (bias of -0.6 and -3.2, respectively versus 5.0 mL/min/1.73 m², and accuracy within 30% of 86.9 and 87.4, respectively, versus 80.9%). In Black Europeans and Black Africans, the best performance was observed with the EKFC equation using a specific Q-value (= concentration of serum creatinine in healthy males and females). These results were confirmed in matched analyses, which showed that serum creatinine concentrations were different in White Europeans, Black Europeans and Black Africans for the same measured GFR, age, sex and body mass index. Creatinine differences were more relevant in males. CONCLUSION In a European and African cohort, the performances of CKD-EPIAS remain suboptimal. The EKFC equation, using usual or dedicated population-specific Q-values, presents the best performance in the whole age range in the European and African populations included in this study.
Collapse
Affiliation(s)
- Pierre Delanaye
- Department of Nephrology-Dialysis-Transplantation, University of Liège, Centre Hospitalier Universitaire Sart Tilman, Liège, Belgium.,Department of Nephrology-Dialysis-Apheresis, Hôpital Universitaire Carémeau, Nîmes, France
| | - Emmanuelle Vidal-Petiot
- Assistance Publique-Hôpitaux de Paris, Bichat Hospital, and Université Paris Cité, Paris, France
| | - Jonas Björk
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden.,Clinical Studies Sweden, Forum South, Skåne University Hospital, Lund, Sweden
| | - Natalie Ebert
- Charité Universitätsmedizin Berlin, Institute of Public Health, Berlin, Germany
| | - Björn O Eriksen
- Section of Nephrology, University Hospital of North Norway and Metabolic and Renal Research Group, UiT The Arctic University of Norway, Tromsö, Norway
| | - Laurence Dubourg
- Néphrologie, Dialyse, Hypertension et Exploration Fonctionnelle Rénale, Hôpital Edouard Herriot, Hospices Civils de Lyon, France
| | - Anders Grubb
- Department of Clinical Chemistry, Skåne University Hospital, Lund, Lund University, Sweden
| | - Magnus Hansson
- Clinical Chemistry, Karolinska University Laboratory, Karolinska University Hospital Huddinge and Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden
| | - Karin Littmann
- Department of Medicine, Karolinska Institute, Huddinge, Sweden
| | - Christophe Mariat
- Service de Néphrologie, Dialyse et Transplantation Rénale, Hôpital Nord, Centre Hospitalier Universitaire de Saint-Etienne, France
| | - Toralf Melsom
- Section of Nephrology, University Hospital of North Norway and Metabolic and Renal Research Group, UiT The Arctic University of Norway, Tromsö, Norway
| | - Elke Schaeffner
- Charité Universitätsmedizin Berlin, Institute of Public Health, Berlin, Germany
| | - Per-Ola Sundin
- Department of Geriatrics, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Arend Bökenkamp
- Department of Paediatric Nephrology, Emma Children's Hospital, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Ulla B Berg
- Department of Clinical Science, Intervention and Technology, Division of Pediatrics, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Kajsa Åsling-Monemi
- Department of Clinical Science, Intervention and Technology, Division of Pediatrics, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Anna Åkesson
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden.,Clinical Studies Sweden, Forum South, Skåne University Hospital, Lund, Sweden
| | - Anders Larsson
- Department of Medical Sciences, Clinical Chemistry, Uppsala University, Uppsala, Sweden
| | - Etienne Cavalier
- Department of Clinical Chemistry, University of Liège, Centre Hospitalier Universitaire Sart Tilman, Liège, Belgium
| | - R Neil Dalton
- The Wellchild Laboratory, Evelina London Children's Hospital, London, UK
| | - Marie Courbebaisse
- Physiology Department, Georges Pompidou European Hospital, Assistance Publique Hôpitaux de Paris, Paris University, Paris, France
| | - Lionel Couzi
- CNRS-UMR Immuno ConcEpT, Nephrologie - Transplantation-Dialyse, Centre Hospitalier Universitaire de Bordeaux, Université de Bordeaux, France
| | - Francois Gaillard
- Service de transplantation et immunologie clinique, Hôpital Edouard Herriot, Hospices civils de Lyon, Lyon, France
| | - Cyril Garrouste
- Department of Nephrology, Clermont-Ferrand University Hospital, Clermont-Ferrand, France
| | - Lola Jacquemont
- Renal Transplantation Department, Centre Hospitalier Universitaire Nantes, Nantes University, Nantes, France
| | - Nassim Kamar
- Department of Nephrology, Dialysis and Organ Transplantation, Centre Hospitalier Universitaire Rangueil, University Paul Sabatier, Toulouse, France
| | - Christophe Legendre
- Hôpital Necker, Assistance Publique Hôpitaux de Paris, Paris University, France
| | - Lionel Rostaing
- Service de Néphrologie, Hémodialyse, Aphérèses et Transplantation Rénale, Hôpital Michallon, Centre Hospitalier Universitaire Grenoble-Alpes, France
| | - Thomas Stehlé
- Université Paris Est Créteil, Institut Mondor de Recherche Biomédicale, Créteil, France.,Service de Néphrologie et Transplantation, Fédération Hospitalo-Universitaire 'Innovative therapy for immune disorders' Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Henri Mondor, Service de Néphrologie et Transplantation, Créteil, France
| | - Jean-Philippe Haymann
- Physiology Department, Assistance Publique- Hôpitaux de Paris, Hôpital Tenon, Paris, France
| | - Luciano da Silva Selistre
- Ciências da Saúde, Universidade de Caxias do Sul, Hospital Geral de Caxias do Sul, Caxias do Sul, Brazil
| | - Jorge P Strogoff-de-Matos
- Nephrology Division, Department of Medicine, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | - Justine B Bukabau
- Renal Unit, Department of Internal Medicine, Kinshasa University Hospital, University of Kinshasa, Kinshasa, Democratic Republic of Congo
| | - Ernest K Sumaili
- Renal Unit, Department of Internal Medicine, Kinshasa University Hospital, University of Kinshasa, Kinshasa, Democratic Republic of Congo
| | - Eric Yayo
- Département de Biochimie, UFR Sciences Pharmaceutiques et Biologiques, Université Felix Houphouët Boigny, Abidjan, Côte d'Ivoire
| | - Dagui Monnet
- Département de Biochimie, UFR Sciences Pharmaceutiques et Biologiques, Université Felix Houphouët Boigny, Abidjan, Côte d'Ivoire
| | - Ulf Nyman
- Department of Translational Medicine, Division of Medical Radiology, Lund University, Malmö, Sweden
| | - Hans Pottel
- Department of Public Health and Primary Care, KU Leuven Campus Kulak Kortrijk, Kortrijk, Belgium
| | - Martin Flamant
- Cordeliers Research Center, Assistance Publique-Hôpitaux de Paris, Bichat Hospital, and Université Paris Cité, Paris, France
| |
Collapse
|
18
|
The New 2021 CKD-EPI Equation Without Race in a European Cohort of Renal Transplanted Patients. Transplantation 2022; 106:2443-2447. [PMID: 35915546 DOI: 10.1097/tp.0000000000004234] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Whether the new chronic kidney disease-epidemiology (CKD-EPI) equation without the race variable remains accurate enough for glomerular filtration rate (GFR) estimation in non-US kidney transplant recipients (KTRs) is unclear. We sought to compare the predictive performance between this equation and the classical CKD-EPI equation in a French cohort of KTRs. We also evaluated the performance of the European Kidney Function Consortium (EKFC) equation, an estimate that has proved very accurate in nontransplant patients and that does not include race variable. METHODS We retrospectively selected 489 KTRs for whom GFR was measured by inulin clearance. Performances of GFR equations were compared according to median bias, imprecision, and accuracy within 30% (P30) and 20% (P20). Differences in P20/P30 were tested using the exact McNemar test. RESULTS Although the 4 equations exhibited a similar level of imprecision, the bias of the new CKD-EPI equation was +5.5 (4.0; 6.6) mL/min/1.73 m², much higher than the bias of the classical CKD-EPI, EKFC, and Modified Diet in Renal Diseases (MDRD) equation (2.4 [1.7;3.5], 2.2 [1.1;3.1], and -0.5 [-1.5; 1.0] mL/min/1.73 m², respectively). The new CKD-EPI equation was significantly less accurate with a P30 of 68.3% as compared with 74.2%, 75.3%, and 77.1% for the classical CKD-EPI, EKFC, and MDRD equation, respectively. The EKFC equation outperformed both versions of the CKD-EPI equation in terms of P20. CONCLUSIONS The new CKD-EPI equation is suboptimal for the care and follow-up of European transplanted patients. The EKFC equation shows at least a similar performance to the MDRD and the classical CKD-EPI equation. Further validation of the EKFC equation in KTRs from a diverse ethnic background is needed.
Collapse
|
19
|
Carey LI, Kaimba S, Nyirenda S, Chetcuti K, Joekes E, Henrion MYR, Rylance J. Prospective cohort study to identify prevalence, risk factors and outcomes of infection associated kidney disease in a regional hospital in Malawi. BMJ Open 2022; 12:e065649. [PMID: 36442901 PMCID: PMC9710333 DOI: 10.1136/bmjopen-2022-065649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES Acute kidney injury (AKI) is a common and severe complication of community acquired infection, but data on impact in sub-Saharan Africa (SSA) are lacking. We determined prevalence, risk factors and outcomes of infection associated kidney disease in adults in Malawi. DESIGN A prospective cohort study of adults admitted to hospital with infection, from February 2021 to June 2021, collecting demographic, clinical, laboratory and ultrasonography data. SETTING Adults admitted to a regional hospital in Southern Region, Malawi. PRIMARY AND SECONDARY OUTCOME MEASURES The primary outcomes were prevalence of kidney disease and mortality by Cox proportional hazard model. AKI was defined according to Kidney Disease Improving Global Outcomes (KDIGO) guidelines. Secondary outcomes were risk factors for AKI identified by logistic regression and prevalence of chronic kidney disease at 3 months. RESULTS We recruited 101 patients presenting to hospital with infection. Median age was 38 years (IQR: 29-48 years), 88 had known HIV status of which 53 (60%) were living with HIV, and of these 42 (79%) were receiving antiretroviral therapy. AKI was present in 33/101 at baseline, of which 18/33 (55%) cases were severe (KDIGO stage 3). At 3 months, 28/94 (30%) participants had died, while 7/61 (11%) of survivors had chronic kidney disease. AKI was associated with older age (age: 60 years vs 40 years, OR: 3.88, 95% CI 1.82 to 16.64), and HIV positivity (OR: 4.08, 95% CI 1.28 to 15.67). Living with HIV was independently associated with death (HR: 3.97, 95% CI 1.07 to 14.69). CONCLUSIONS Kidney disease is common among hospitalised adults with infection in Malawi, with significant kidney impairment identified at 3 months. Our study highlights the difficulty in diagnosing acute and chronic kidney disease, and the need for more accurate methods than creatinine based estimated glomerular filtration rate (eGFR) equations for populations in Africa. Patients with kidney impairment identified in hospital should be prioritised for follow-up.
Collapse
Affiliation(s)
- Laura Isobel Carey
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi
- Bristol Renal, Bristol Medical School, University of Bristol, Bristol, UK
| | - Sylvester Kaimba
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi
| | - Saulos Nyirenda
- Department of Medicine, Zomba Central Hospital, Zomba, Malawi
| | - Karen Chetcuti
- Kamuzu University of Health Sciences, Blantyre, Malawi
- Worldwide Radiology, Liverpool, UK
| | - Elizabeth Joekes
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
- Worldwide Radiology, Liverpool, UK
| | - Marc Yves Romain Henrion
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi
| | - Jamie Rylance
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi
| |
Collapse
|
20
|
Khandpur S, Awasthi A, Behera MR, Purty AJ, Singh NP, Tiwari S. Kidney disease burden in an Asian Indian population: Effect of the new 2021 serum creatinine CKD-EPI equation. Diabetes Res Clin Pract 2022; 193:110120. [PMID: 36270433 DOI: 10.1016/j.diabres.2022.110120] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 10/11/2022] [Accepted: 10/13/2022] [Indexed: 11/16/2022]
Abstract
AIMS CKD-EPI (chronic kidney disease-epidemiological) serum creatinine equation is widely accepted for calculating estimated glomerular filtration rate (eGFR). The effect of transitioning from the older 2009 to the newer race-independent 2021 CKD-EPI equation on the estimated kidney disease burden (eKDB) was studied in an Asian-Indian population. METHODS The study included 1156 adults, the two equations were compared for agreement (Bland-Altman and Cohen's kappa) and concordance (Lin's correlation and test for proportions). RESULTS The 2021 CKD-EPI increased the eGFR (positive-bias), independent of age-group, gender or presence of type 2 diabetes mellitus (T2DM) and hypertension (HTN). Thus, the eKDB was significantly decreased by 2021 CKD-EPI equation. The agreement was highest for the age-group 31-40 years (95.8 % versus 87.5 % for > 50 years). Besides, the eGFR category was shifted from G3 to G1 in 8.2 % (95 % CI: 6.8-9.9) individuals by 2021 CKD-EPI. The effect of transition on eKDB was greater in individuals > 50 years (7.4 %) or with HTN (6.3 %). CONCLUSION In comparison to the old equation, the 2021 CKD-EPI equation increased the eGFR, lowering the eKDB in this Asian-Indian cohort. The degree of lowering was affected by age-group, and presence of T2DM /HTN, but independent of gender.
Collapse
Affiliation(s)
- Sukhanshi Khandpur
- Department of Molecular Medicine & Biotechnology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Ashish Awasthi
- Centre for Chronic Disease Control, C1/52, 2(nd) Floor, Safdarjung Development Area, New Delhi 110016, India; Centre for Chronic Conditions and Injuries, Public Health Foundation of India, Gurugram 122002, India
| | - Manas R Behera
- Department of Nephrology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Anil J Purty
- Department of Community Medicine, Pondicherry Institute of Medical Sciences (A Unit of Madras Medical Mission), Kalapet, Puducherry 605014, India
| | | | - Swasti Tiwari
- Department of Molecular Medicine & Biotechnology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India.
| |
Collapse
|
21
|
Umeukeje EM, Koonce TY, Kusnoor SV, Ulasi II, Kostelanetz S, Williams AM, Blasingame MN, Epelbaum MI, Giuse DA, Apple AN, Kaur K, González Peña T, Barry D, Eisenstein LG, Nutt CT, Giuse NB. Systematic review of international studies evaluating MDRD and CKD-EPI estimated glomerular filtration rate (eGFR) equations in Black adults. PLoS One 2022; 17:e0276252. [PMID: 36256652 PMCID: PMC9578594 DOI: 10.1371/journal.pone.0276252] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 10/03/2022] [Indexed: 11/17/2022] Open
Abstract
Use of race adjustment in estimating glomerular filtration rate (eGFR) has been challenged given concerns that it may negatively impact the clinical care of Black patients, as it results in Black patients being systematically assigned higher eGFR values than non-Black patients. We conducted a systematic review to assess how well eGFR, with and without race adjustment, estimates measured GFR (mGFR) in Black adults globally. A search across multiple databases for articles published from 1999 to May 2021 that compared eGFR to mGFR and reported outcomes by Black race was performed. We included studies that assessed eGFR using the Modification of Diet in Renal Disease (MDRD) and Chronic Kidney Disease Epidemiology Collaboration (CKD-EPICr) creatinine equations. Risk of study bias and applicability were assessed with the QUality Assessment of Diagnostic Accuracy Studies-2. Of 13,167 citations identified, 12 met the data synthesis criteria (unique patient cohorts in which eGFR was compared to mGFR with and without race adjustment). The studies included patients with and without kidney disease from Africa (n = 6), the United States (n = 3), Europe (n = 2), and Brazil (n = 1). Of 11 CKD-EPI equation studies, all assessed bias, 8 assessed accuracy, 6 assessed precision, and 5 assessed correlation/concordance. Of 7 MDRD equation studies, all assessed bias, 6 assessed accuracy, 5 assessed precision, and 3 assessed correlation/concordance. The majority of studies found that removal of race adjustment improved bias, accuracy, and precision of eGFR equations for Black adults. Risk of study bias was often unclear, but applicability concerns were low. Our systematic review supports the need for future studies to be conducted in diverse populations to assess the possibility of alternative approaches for estimating GFR. This study additionally provides systematic-level evidence for the American Society of Nephrology-National Kidney Foundation Task Force efforts to pursue other options for GFR estimation.
Collapse
Affiliation(s)
- Ebele M. Umeukeje
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States of America
- Vanderbilt Center for Kidney Disease, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Taneya Y. Koonce
- Center for Knowledge Management, Vanderbilt University Medical Center, Nashville, TN, United States of America
- * E-mail:
| | - Sheila V. Kusnoor
- Center for Knowledge Management, Vanderbilt University Medical Center, Nashville, TN, United States of America
- Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Ifeoma I. Ulasi
- Renal Unit, Department of Medicine, College of Medicine, University of Nigeria/University of Nigeria Teaching Hospital, Ituku-Ozalla, Nigeria
| | - Sophia Kostelanetz
- Division of General Internal Medicine and Public Health, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Annette M. Williams
- Center for Knowledge Management, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Mallory N. Blasingame
- Center for Knowledge Management, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Marcia I. Epelbaum
- Center for Knowledge Management, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Dario A. Giuse
- Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Annie N. Apple
- Vanderbilt University School of Medicine, Nashville, TN, United States of America
| | - Karampreet Kaur
- Vanderbilt University School of Medicine, Nashville, TN, United States of America
| | - Tavia González Peña
- Vanderbilt University School of Medicine, Nashville, TN, United States of America
| | - Danika Barry
- Department of Obstetrics & Gynecology, McGaw Medical Center of Northwestern University, Chicago, IL, United States of America
| | - Leo G. Eisenstein
- Department of Medicine, NYU Langone Medical Center, New York, NY, United States of America
| | - Cameron T. Nutt
- Department of Medicine, Brigham and Women’s Hospital, Boston, MA, United States of America
| | - Nunzia B. Giuse
- Center for Knowledge Management, Vanderbilt University Medical Center, Nashville, TN, United States of America
- Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN, United States of America
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States of America
| |
Collapse
|
22
|
Napier K, Lim D, Thomas E, Boyd J, Chakera A, Williamson J, Betts K, Manuel J, Tuando TR, Robinson S. Impact of routine reporting of estimated glomerular filtration rate using the European Kidney Function Consortium and Chronic Kidney Disease Epidemiology Collaboration equations in a Western Australian community population. Nephrology (Carlton) 2022; 27:823-833. [PMID: 36122908 PMCID: PMC9804785 DOI: 10.1111/nep.14083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 05/25/2022] [Accepted: 07/16/2022] [Indexed: 01/09/2023]
Abstract
AIM In 2020, the European Kidney Function Consortium (EKFC) published a new creatinine-based equation to estimate glomerular filtration rate (eGFR) to overcome known limitations in existing equations. The aim of this study is to model the potential impact on service referral and health expenditure of routine reporting of eGFR using the EKFC equation as compared to the CKD-EPI equation in a Western Australian population. METHODS eGFR was calculated for 760 614 patients with 2 368 234 creatinine results using the CKD-EPI and EKFC formulas. Patients were grouped into a CKD cohort if they had at least two eGFR results of <60 ml/min/1.73 m2 from tests at least 90 days apart. The impact of each equation on the reclassification of CKD stages, CKD cohort classification, the rate of change in eGFR and direct health costs were assessed. RESULTS About 90.66% of patients had a lower eGFR when calculated using the EKFC equation. About 12.6% of individuals were classified into a different CKD stage using the EKFC equation with 97.43% of these patients classified into a higher (more advanced) stage. There was a 25.9% increase in the number of patients identified as having CKD when calculated using the EKFC equation. Direct health costs also increased with the use of EKFC reporting. CONCLUSION Use of the EKFC equation will increase population prevalence of CKD and will result in a shift to higher stages of CKD. This has implications for monitoring and referral of patients within specialist services and has the potential to increase the need for multidisciplinary care.
Collapse
Affiliation(s)
- Kathryn Napier
- Curtin Institute for ComputationCurtin UniversityPerthWestern AustraliaAustralia
| | - David Lim
- Curtin School of Population HealthCurtin UniversityPerthWestern AustraliaAustralia
| | - Elizabeth Thomas
- Curtin School of Population HealthCurtin UniversityPerthWestern AustraliaAustralia,Medical SchoolThe University of Western AustraliaPerthWestern AustraliaAustralia
| | - James Boyd
- Curtin School of Population HealthCurtin UniversityPerthWestern AustraliaAustralia,La Trobe UniversityMelbourneVictoriaAustralia
| | - Aron Chakera
- Medical SchoolThe University of Western AustraliaPerthWestern AustraliaAustralia,Renal UnitSir Charles Gairdner HospitalPerthWestern AustraliaAustralia
| | | | - Kim Betts
- Curtin School of Population HealthCurtin UniversityPerthWestern AustraliaAustralia
| | - Justin Manuel
- WA Country Health ServicePerthWestern AustraliaAustralia
| | | | - Suzanne Robinson
- Curtin School of Population HealthCurtin UniversityPerthWestern AustraliaAustralia,Deakin Health EconomicsDeakin UniversityBurwoodVictoriaAustralia
| |
Collapse
|
23
|
Kalyesubula R, Conroy AL, Calice-Silva V, Kumar V, Onu U, Batte A, Kaze FF, Fabian J, Ulasi I. Screening for Kidney Disease in Low- and Middle-Income Countries. Semin Nephrol 2022; 42:151315. [DOI: 10.1016/j.semnephrol.2023.151315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
|
24
|
Kim H, Hur M, Lee S, Lee GH, Moon HW, Yun YM. European Kidney Function Consortium Equation vs. Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) Refit Equations for Estimating Glomerular Filtration Rate: Comparison with CKD-EPI Equations in the Korean Population. J Clin Med 2022; 11:jcm11154323. [PMID: 35893414 PMCID: PMC9331398 DOI: 10.3390/jcm11154323] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/14/2022] [Accepted: 07/22/2022] [Indexed: 11/16/2022] Open
Abstract
The Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation is the most commonly used equation for estimated glomerular filtration rate (eGFR). Recently, the European Kidney Function Consortium (EKFC) announced a full-age spectrum equation, and the CKD-EPI announced the CKD-EPI refit equations (CKD-EPI-R). We compared CKD-EPI, EKFC, and CKD-EPI-R equations in a large-scale Korean population and investigated their potential implications for CKD prevalence. In a total of 106,021 individuals who received annual check-ups from 2018 to 2020, we compared the eGFR equations according to the Clinical and Laboratory Standards Institute guidelines. Weighted kappa (κ) agreement was used to compare the potential implications for CKD prevalence across the equations. The median value of eGFR tended to increase in the order of EKFC, CKD-EPI, and CKD-EPI-R equations (92.4 mL/min/1.73 m2, 96.0 mL/min/1.73 m2, and 100.0 mL/min/1.73 m2, respectively). The EKFC and CKD-EPI-R equations showed a very high correlation of eGFR and good agreement for CKD prevalence with CKD-EPI equation (r = 0.98 and 1.00; κ = 0.80 and 0.82, respectively). Compared with the CKD-EPI equation, the EFKC equation overestimated CKD prevalence (3.5%), and the CKD-EPI-R equation underestimated it (1.5%). This is the first study comparing CKD-EPI, EKFC, and CKD-EPI-R equations simultaneously. The EKFC and CKD-EPI-R equations were statistically interchangeable with CKD-EPI equations in this large-scale Korean population. The transition of eGFR equations, however, would lead to sizable changes in the CKD prevalence. To improve kidney health, in-depth discussion considering various clinical aspects is imperative for the transition of eGFR equations.
Collapse
Affiliation(s)
- Hanah Kim
- Department of Laboratory Medicine, Konkuk University School of Medicine, Konkuk University Medical Center, 120-1, Neungdong-ro, Hwayang-dong, Gwangjin-gu, Seoul 05030, Korea; (H.K.); (G.-H.L.); (H.-W.M.); (Y.-M.Y.)
| | - Mina Hur
- Department of Laboratory Medicine, Konkuk University School of Medicine, Konkuk University Medical Center, 120-1, Neungdong-ro, Hwayang-dong, Gwangjin-gu, Seoul 05030, Korea; (H.K.); (G.-H.L.); (H.-W.M.); (Y.-M.Y.)
- Correspondence: ; Tel.: +82-2-2030-5581
| | - Seungho Lee
- Department of Preventive Medicine, Dong-A University College of Medicine, Busan 49201, Korea;
| | - Gun-Hyuk Lee
- Department of Laboratory Medicine, Konkuk University School of Medicine, Konkuk University Medical Center, 120-1, Neungdong-ro, Hwayang-dong, Gwangjin-gu, Seoul 05030, Korea; (H.K.); (G.-H.L.); (H.-W.M.); (Y.-M.Y.)
| | - Hee-Won Moon
- Department of Laboratory Medicine, Konkuk University School of Medicine, Konkuk University Medical Center, 120-1, Neungdong-ro, Hwayang-dong, Gwangjin-gu, Seoul 05030, Korea; (H.K.); (G.-H.L.); (H.-W.M.); (Y.-M.Y.)
| | - Yeo-Min Yun
- Department of Laboratory Medicine, Konkuk University School of Medicine, Konkuk University Medical Center, 120-1, Neungdong-ro, Hwayang-dong, Gwangjin-gu, Seoul 05030, Korea; (H.K.); (G.-H.L.); (H.-W.M.); (Y.-M.Y.)
| |
Collapse
|
25
|
Chowdhury S, McLure H. Chronic kidney disease and anaesthesia. BJA Educ 2022; 22:321-328. [PMID: 36097571 PMCID: PMC9463627 DOI: 10.1016/j.bjae.2022.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/10/2022] [Indexed: 10/18/2022] Open
|
26
|
Li Q, Yang Z, Zheng S, Wu Y, Cai W, Hu M, Zhu Q, Ye L. Applicability of 14 Formulas for Estimating Glomerular Filtration Rate in the Evaluation of Renal Function before and after Nephron-Sparing Surgery in Patients with Renal Tumors. CONTRAST MEDIA & MOLECULAR IMAGING 2022; 2022:3330442. [PMID: 35615732 PMCID: PMC9110198 DOI: 10.1155/2022/3330442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 04/18/2022] [Accepted: 04/21/2022] [Indexed: 11/18/2022]
Abstract
To compare the applicability of 14 equations of estimating glomerular filtration rate (eGFR) before and after nephron-sparing surgery (NSS) for renal function assessment of patients with renal tumors. Preoperative and postoperative GFR is measured by emission computed tomography (ECT) with 99mTc-DTPA as an imaging agent as reference GFR (rGFR) to compare with all formulas. Spearman correlation analysis and Bland-Altman agreement analysis were used to evaluate the correlation between rGFR and eGFR1 to 14 before and after surgery. A total of 50 cases including 22 males and 28 females were included. The results of preoperative eGFR1-14 correlated with rGFR (P < 0.05). The calculation results of all estimation formulas have a significant correlation with preoperative GFR. Preoperative MDRD-I, CKD-EPI SCysC, and FAS Scr-SCysC have good consistency. The CG formula has the highest precision and FAS Scr-SCysC has the highest accuracy. A total of 30 patients followed up after surgery, and postoperative rGFR correlated with CG, CKD-EPI, FAS, and BIS formulas (P < 0.05). But postoperative rGFR has no significant correlation with MDRD and Schwartz (P > 0.05). Postoperative CKD-EPI Scr-SCysC has best consistency, and FAS Scr-SCysC has the highest accuracy and precision. Our data suggest that eGFR equations evaluated by both serum creatinine (Scr) and cystatin C (SCysC) is not necessarily better than those evaluated by one of them alone. Among all enrolled equations, FAS Scr-SCysC is the best one to evaluate postoperative GFR in patients with renal tumors.
Collapse
Affiliation(s)
- Qiuyan Li
- Shengli Clinical Medical College of Fujian Medical University and Department of Urology, Fujian Provincial Hospital, Fuzhou 350001, China
| | - ZeSong Yang
- Shengli Clinical Medical College of Fujian Medical University and Department of Urology, Fujian Provincial Hospital, Fuzhou 350001, China
| | - Shiwen Zheng
- Medical College, Anhui University of Science and Technology, Huainan 232000, China
| | - Yangbiao Wu
- Shengli Clinical Medical College of Fujian Medical University and Department of Urology, Fujian Provincial Hospital, Fuzhou 350001, China
| | - Wanghai Cai
- Shengli Clinical Medical College of Fujian Medical University and Department of Urology, Fujian Provincial Hospital, Fuzhou 350001, China
| | - Minxiong Hu
- Shengli Clinical Medical College of Fujian Medical University and Department of Urology, Fujian Provincial Hospital, Fuzhou 350001, China
| | - Qingguo Zhu
- Shengli Clinical Medical College of Fujian Medical University and Department of Urology, Fujian Provincial Hospital, Fuzhou 350001, China
| | - Liefu Ye
- Shengli Clinical Medical College of Fujian Medical University and Department of Urology, Fujian Provincial Hospital, Fuzhou 350001, China
| |
Collapse
|
27
|
Pöhlmann J, Bergenheim K, Garcia Sanchez JJ, Rao N, Briggs A, Pollock RF. Modeling Chronic Kidney Disease in Type 2 Diabetes Mellitus: A Systematic Literature Review of Models, Data Sources, and Derivation Cohorts. Diabetes Ther 2022; 13:651-677. [PMID: 35290625 PMCID: PMC8991383 DOI: 10.1007/s13300-022-01208-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/20/2022] [Indexed: 11/26/2022] Open
Abstract
INTRODUCTION As novel therapies for chronic kidney disease (CKD) in type 2 diabetes mellitus (T2DM) become available, their long-term benefits should be evaluated using CKD progression models. Existing models offer different modeling approaches that could be reused, but it may be challenging for modelers to assess commonalities and differences between the many available models. Additionally, the data and underlying population characteristics informing model parameters may not always be evident. Therefore, this study reviewed and summarized existing modeling approaches and data sources for CKD in T2DM, as a reference for future model development. METHODS This systematic literature review included computer simulation models of CKD in T2DM populations. Searches were implemented in PubMed (including MEDLINE), Embase, and the Cochrane Library, up to October 2021. Models were classified as cohort state-transition models (cSTM) or individual patient simulation (IPS) models. Information was extracted on modeled kidney disease states, risk equations for CKD, data sources, and baseline characteristics of derivation cohorts in primary data sources. RESULTS The review identified 49 models (21 IPS, 28 cSTM). A five-state structure was standard among state-transition models, comprising one kidney disease-free state, three kidney disease states [frequently including albuminuria and end-stage kidney disease (ESKD)], and one death state. Five models captured CKD regression and three included cardiovascular disease (CVD). Risk equations most commonly predicted albuminuria and ESKD incidence, while the most predicted CKD sequelae were mortality and CVD. Most data sources were well-established registries, cohort studies, and clinical trials often initiated decades ago in predominantly White populations in high-income countries. Some recent models were developed from country-specific data, particularly for Asian countries, or from clinical outcomes trials. CONCLUSION Modeling CKD in T2DM is an active research area, with a trend towards IPS models developed from non-Western data and single data sources, primarily recent outcomes trials of novel renoprotective treatments.
Collapse
Affiliation(s)
| | - Klas Bergenheim
- Global Market Access and Pricing, BioPharmaceuticals, AstraZeneca, Gothenburg, Sweden
| | | | - Naveen Rao
- Global Market Access and Pricing, BioPharmaceuticals, AstraZeneca, Cambridge, UK
| | - Andrew Briggs
- London School of Hygiene and Tropical Medicine, London, UK
| | | |
Collapse
|
28
|
Ottosson Frost C, Gille-Johnson P, Blomstrand E, St-Aubin V, Leion F, Grubb A. Cystatin C-based equations for estimating glomerular filtration rate do not require race or sex coefficients. Scandinavian Journal of Clinical and Laboratory Investigation 2022; 82:162-166. [PMID: 35107398 DOI: 10.1080/00365513.2022.2031279] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Estimation or measurement of glomerular filtration rate (GFR) is generally required for optimal treatment of patients. Plasma creatinine has been used for estimation of GFR since 1926 and plasma cystatin C since 1979. The creatinine level is strongly dependent upon muscle mass and as the average muscle mass of different populations may vary, creatinine-based GFR-estimating equations have since 1999 used more than 10 different race coefficients to improve the diagnostic performance of such equations. But 'race' cannot be determined by biological measurements and is thus an ill-defined biological entity and controversial as it involves self-reporting and social considerations. In contrast, cystatin C-levels are virtually independent of muscular mass and cystatin C-based GFR-estimating equations do not require race coefficients for reliable estimation of GFR. The use of cystatin C-based GFR-estimating equations, alone or in conjunction with creatinine-based GFR-estimating equations, is therefore highly recommended to eliminate the use of race coefficients in estimating GFR. Although sex is a more biology-oriented parameter than race, sex terms may in some cases be controversial, involving self-reporting and social considerations. However, sex terms are not required for adequate estimation of GFR using cystatin C-based equations.
Collapse
Affiliation(s)
- Carl Ottosson Frost
- Department of Clinical Chemistry, Skåne University Hospital, Lund University, Lund, Sweden
| | - Per Gille-Johnson
- Department of Clinical Chemistry, Skåne University Hospital, Lund University, Lund, Sweden
| | - Emanuel Blomstrand
- Department of Clinical Chemistry, Skåne University Hospital, Lund University, Lund, Sweden
| | - Viggo St-Aubin
- Department of Clinical Chemistry, Skåne University Hospital, Lund University, Lund, Sweden
| | - Felicia Leion
- Department of Clinical Chemistry, Skåne University Hospital, Lund University, Lund, Sweden
| | - Anders Grubb
- Department of Clinical Chemistry, Skåne University Hospital, Lund University, Lund, Sweden
| |
Collapse
|
29
|
Affiliation(s)
- Rouvick M Gama
- King's Kidney Care, King's College Hospital NHS Trust, London, UK
| | - Robert Kalyesubula
- Makerere University College of Health Sciences, Kampala, Uganda
- Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
| | - June Fabian
- Wits Donald Gordon Medical Centre, School of Clinical Medicine, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa
| | - Viyaasan Mahalingasivam
- Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
- Department of Renal Medicine and Transplantation, Barts Health NHS Trust, London, UK
| |
Collapse
|