Open this publication in new window or tab >>Optimal Aging Institute, New York University Grossman School of Medicine, New York, US..
Division of Precision Medicine, Department of Medicine, New York University Grossman School of Medicine, New York, US..
Centre for Research in Epidemiology and Population Health (CESP), Paris-Saclay University, Inserm U1018, Versailles Saint-Quentin University, Clinical Epidemiology Team, Villejuif, France, FR..
Dalarna University, School of Health and Welfare, Medical Science. Department of Neurobiology, Care Sciences and Society, Family Medicine and Primary Care Unit, Karolinska Institutet, Huddinge, Sweden..
Division of Clinical Epidemiology and Aging Research, German Cancer Research Center and Network Aging Research, Heidelberg University, Heidelberg, Germany, DE..
Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Huddinge, Sweden; Division of Nephrology, Department of Clinical Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden..
Kidney Health Research Collaborative, University of California San Francisco and San Francisco Veterans Affairs Health Care System, San Francisco, US..
Division of Renal Electrolyte and Hypertension, Perelman School of Medicine, University of Pennsylvania, Philadelphia, US..
Departments of Medicine and Pathology and Laboratory Medicine, University of Vermont Larner College of Medicine, Burlington, US..
Department of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands, NL..
Framingham Heart Study, Framingham, Massachusetts, US; Population Sciences Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, US.
Division of Nephrology, Department of Medicine, Tufts Medical Center, Boston, Massachusetts, US..
Nephrology Section, Veterans Affairs San Diego Health Care System, San Diego, California, US; Division of Nephrology-Hypertension, University of California San Diego, La Jolla, US..
Department of Health Promotion Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan, JP; Division of Clinical Nephrology and Rheumatology, Kidney Research Center, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan, JP..
Department of Public Health and Hygiene, Yamagata University, Yamagata, Japan, JP..
School of Cardiovascular & Metabolic Health, University of Glasgow, Glasgow, United Kingdom, GB; Glasgow Renal and Transplant Unit, Queen Elizabeth University Hospital, Glasgow, United Kingdom, GB..
School of Public Health and Preventive Medicine and Department of Medicine, Monash University, Clayton, Victoria, Australia, AU; Department of Nephrology, Monash Medical Centre, Monash Health, Clayton, Victoria, Australia, AU..
Kidney Health Research Collaborative, University of California San Francisco and San Francisco Veterans Affairs Health Care System, San Francisco, US..
Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, the Netherlands, NL; Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands, NL.
Centre for Kidney and Bladder Health, University College London, London, United Kingdom, GB..
Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, India, IN..
Division of Nephrology, Department of Medicine, Tufts Medical Center, Boston, Massachusetts, US..
Department of Nephrology and Hypertension, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany, DE; Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Berlin, Germany, DE..
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2025 (English)In: Journal of the American Medical Association (JAMA), ISSN 0098-7484, E-ISSN 1538-3598, article id e2517578Article in journal (Refereed) Epub ahead of print
Abstract [en]
IMPORTANCE: Estimated glomerular filtration rates (eGFRs) can differ according to whether creatinine or cystatin C is used for the eGFR calculation, but the prevalence and importance of these differences remain unclear.
OBJECTIVES: To evaluate the prevalence of a discordance between cystatin C-based eGFR (eGFRcys) and creatinine-based eGFR (eGFRcr), identify characteristics associated with greater discordance, and evaluate associations of discordance with adverse outcomes.
DATA SOURCES: Participants in the Chronic Kidney Disease Prognosis Consortium (CKD-PC).
STUDY SELECTION: Participants with concurrent cystatin C and creatinine measurements and clinical outcome measurement.
DATA EXTRACTION AND SYNTHESIS: Between April 2024 and August 2025, data were synthesized using individual-level meta-analysis.
MAIN OUTCOMES AND MEASURES: The primary independent measurement was a large negative eGFR difference (eGFRdiff), defined as an eGFRcys that was at least 30% lower than eGFRcr. Secondary (dependent) outcomes included all-cause and cardiovascular mortality, atherosclerotic cardiovascular disease, heart failure, and kidney failure with replacement therapy.
RESULTS: A total of 821 327 individuals from 23 outpatient cohorts (mean [SD] age, 59 [12] years; 48% female; 13.5% with diabetes; 40% with hypertension) and 39 639 individuals from 2 inpatient cohorts (mean [SD] age, 67 [16] years; 31% female; 30% with diabetes; 72% with hypertension) were included. Among outpatient participants, 11% had a large negative eGFRdiff (range, 3%-50%). Among inpatients, 35% had a large negative eGFRdiff. Among outpatient participants, at a mean (SD) follow-up of 11 (4) years, a large negative eGFRdiff, compared with an eGFRdiff between -30% and 30%, was associated with higher rates of all-cause mortality (28.4 vs 16.8 per 1000 person-years [PY]; hazard ratio [HR], 1.69 [95% CI, 1.57-1.82]), cardiovascular mortality (6.1 vs 3.8 per 1000 PY; HR, 1.61 [95% CI, 1.48-1.76]), atherosclerotic cardiovascular disease (13.3 vs 9.8 per 1000 PY; HR, 1.35 [95% CI, 1.27-1.44]), heart failure (13.2 vs 8.6 per 1000 PY; HR, 1.54 [95% CI, 1.40-1.68]), and kidney failure with replacement therapy (2.7 vs 2.1 per 1000 PY; HR, 1.29 [95% CI, 1.13-1.47]).
CONCLUSIONS AND RELEVANCE: In the CKD-PC, 11% of outpatient participants and 35% of hospitalized patients had an eGFRcys that was at least 30% lower than their eGFRcr. In the outpatient setting, presence of eGFRcys at least 30% lower than eGFRcr was associated with significantly higher rates of all-cause mortality, cardiovascular events, and kidney failure.
National Category
Cardiology and Cardiovascular Disease Nephrology
Identifiers
urn:nbn:se:du-51726 (URN)10.1001/jama.2025.17578 (DOI)41202182 (PubMedID)
Note
Collaborators:Chronic Kidney Disease Prognosis Consortium Investigators and Collaborators
2025-11-122025-11-122025-11-12Bibliographically approved