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Heerspink HJL, Jongs N, Chertow GM, Langkilde AM, McMurray JJV, Correa-Rotter R, Rossing P, Sjöström CD, Stefansson BV, Toto RD, Wheeler DC, Greene T. Effect of dapagliflozin on the rate of decline in kidney function in patients with chronic kidney disease with and without type 2 diabetes: a prespecified analysis from the DAPA-CKD trial. Lancet Diabetes Endocrinol 2021; 9:743-754. [PMID: 34619108 DOI: 10.1016/s2213-8587(21)00242-4] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/09/2021] [Accepted: 08/12/2021] [Indexed: 12/22/2022]
Abstract
BACKGROUND Dapagliflozin reduced the risk of kidney failure in patients with chronic kidney disease with and without type 2 diabetes in the DAPA-CKD trial. In this pre-specified analysis, we assessed the effect of dapagliflozin on the rate of change in estimated glomerular filtration rate (eGFR)-ie, the eGFR slope. METHODS DAPA-CKD was a randomised controlled trial that enrolled participants aged 18 years or older, with or without type 2 diabetes, with a urinary albumin-to-creatinine ratio (UACR) of 200-5000 mg/g, and an eGFR of 25-75 mL/min per 1·73m2. Participants were randomly assigned (1:1) to oral dapagliflozin 10 mg once daily or placebo, added to standard care. In this pre-specified analysis, we analysed eGFR slope using mixed-effect models with different slopes from baseline to week 2 (acute eGFR decline), week 2 to end of treatment (chronic eGFR slope), and baseline to end of treatment (total eGFR slope). DAPA-CKD is registered with ClinicalTrials.gov, NCT03036150, and is now complete. FINDINGS Between Feb 2, 2017, and April 3, 2020, 4304 participants were recruited, of whom 2152 (50%) were assigned to dapagliflozin and 2152 (50%) were assigned to placebo. At baseline, the mean age was 62 years (SD 12), 1425 (33·1%) participants were women, 2906 (67·5%) participants had type 2 diabetes. The median on-treatment follow-up was 2·3 years (IQR 1·8-2·6). From baseline to the end of treatment, dapagliflozin compared with placebo slowed eGFR decline by 0·95 mL/min per 1·73 m2 per year (95% CI 0·63 to 1·27) in the overall cohort. Between baseline and week 2, dapagliflozin compared with placebo resulted in an acute eGFR decline of 2·61 mL/min per 1·73 m2 (2·16 to 3·06) in patients with type 2 diabetes and 2·01 mL/min per 1·73 m2 (1·36 to 2·66) in those without type 2 diabetes. Between week 2 and end of treatment, dapagliflozin compared with placebo reduced the mean rate of eGFR decline by a greater amount in patients with type 2 diabetes (mean difference in chronic eGFR slope 2·26 mL/min per 1·73 m2 per year [1·88 to 2·64]) than in those without type 2 diabetes (1·29 mL/min per 1·73 m2 per year [0·73 to 1·85]; pinteraction=0·0049). Between baseline and end of treatment, the effect of dapagliflozin compared with placebo on the decline of total eGFR slope in patients with type 2 diabetes was 1·18 mL/min per 1·73 m2 per year (0·79 to 1·56) and without type 2 diabetes was 0·46 mL/min per 1·73 m2 per year (-0·10 to 1·03; pinteraction=0·040). The total eGFR slope was steeper in patients with higher baseline HbA1c and UACR; the effect of dapagliflozin on eGFR slope was also more pronounced in patients with higher baseline HbA1c and UACR. INTERPRETATION Dapagliflozin significantly slowed long-term eGFR decline in patients with chronic kidney disease compared with placebo. The mean difference in eGFR slope between patients treated with dapagliflozin versus placebo was greater in patients with type 2 diabetes, higher HbA1c, and higher UACR. FUNDING AstraZeneca.
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Affiliation(s)
- Hiddo J L Heerspink
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands; The George Institute for Global Health, Sydney, NSW, Australia.
| | - Niels Jongs
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Glenn M Chertow
- Departments of Medicine and Epidemiology and Population Health, Stanford University School of Medicine, Stanford, CA, USA
| | - Anna Maria Langkilde
- Late-Stage Development, Cardiovascular, Renal, and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - John J V McMurray
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - Ricardo Correa-Rotter
- The National Medical Science and Nutrition Institute Salvador Zubiran, Mexico City, Mexico
| | - Peter Rossing
- Steno Diabetes Center Copenhagen, Gentofte, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - C David Sjöström
- Late-Stage Development, Cardiovascular, Renal, and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Bergur V Stefansson
- Late-Stage Development, Cardiovascular, Renal, and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Robert D Toto
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX, USA
| | - David C Wheeler
- The George Institute for Global Health, Sydney, NSW, Australia; Department of Renal Medicine, University College London, London, UK
| | - Tom Greene
- Study Design and Biostatistics Center, University of Utah Health Sciences, Salt Lake City, UT, USA
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Rovin BH, Adler SG, Barratt J, Bridoux F, Burdge KA, Chan TM, Cook HT, Fervenza FC, Gibson KL, Glassock RJ, Jayne DR, Jha V, Liew A, Liu ZH, Mejía-Vilet JM, Nester CM, Radhakrishnan J, Rave EM, Reich HN, Ronco P, Sanders JSF, Sethi S, Suzuki Y, Tang SC, Tesar V, Vivarelli M, Wetzels JF, Floege J. KDIGO 2021 Clinical Practice Guideline for the Management of Glomerular Diseases. Kidney Int 2021; 100:S1-S276. [PMID: 34556256 DOI: 10.1016/j.kint.2021.05.021] [Citation(s) in RCA: 796] [Impact Index Per Article: 265.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 05/25/2021] [Indexed: 12/13/2022]
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Cherney DZI, Cosentino F, Dagogo-Jack S, McGuire DK, Pratley R, Frederich R, Maldonado M, Liu CC, Liu J, Pong A, Cannon CP. Ertugliflozin and Slope of Chronic eGFR: Prespecified Analyses from the Randomized VERTIS CV Trial. Clin J Am Soc Nephrol 2021; 16:1345-1354. [PMID: 34497110 PMCID: PMC8729577 DOI: 10.2215/cjn.01130121] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 05/27/2021] [Indexed: 11/23/2022]
Abstract
BACKGROUND AND OBJECTIVES A reduction in the rate of eGFR decline, with preservation of ≥0.75 ml/min per 1.73 m2 per year, has been proposed as a surrogate for kidney disease progression. We report results from prespecified analyses assessing effects of ertugliflozin versus placebo on eGFR slope from the eValuation of ERTugliflozin effIcacy and Safety CardioVascular outcomes (VERTIS CV) trial (NCT01986881). DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Patients with type 2 diabetes mellitus and established atherosclerotic cardiovascular disease were randomized to placebo, ertugliflozin 5 mg, and ertugliflozin 15 mg (1:1:1). The analyses compared the effect of ertugliflozin (pooled doses, n=5499) versus placebo (n=2747) on eGFR slope per week and per year by random coefficient models. Study periods (weeks 0-6 and weeks 6-52) and total and chronic slopes (week 0 or week 6 to weeks 104, 156, 208, and 260) were modeled separately and by baseline kidney status. RESULTS In the overall population, for weeks 0-6, the least squares mean eGFR slopes (ml/min per 1.73 m2 per week [95% confidence interval (95% CI)]) were -0.07 (-0.16 to 0.03) and -0.54 (-0.61 to -0.48) for the placebo and ertugliflozin groups, respectively; the difference was -0.47 (-0.59 to -0.36). During weeks 6-52, least squares mean eGFR slopes (ml/min per 1.73 m2 per year [95% CI]) were -0.12 (-0.70 to 0.46) and 1.62 (1.21 to 2.02) for the placebo and ertugliflozin groups, respectively; the difference was 1.74 (1.03 to 2.45). For weeks 6-156, least squares mean eGFR slopes (ml/min per 1.73 m2 per year [95% CI]) were -1.51 (-1.70 to -1.32) and -0.32 (-0.45 to -0.19) for the placebo and ertugliflozin groups, respectively; the difference was 1.19 (0.95 to 1.42). During weeks 0-156, the placebo-adjusted difference in least squares mean slope was 1.06 (0.85 to 1.27). These findings were consistent by baseline kidney status. CONCLUSIONS Ertugliflozin has a favorable placebo-adjusted eGFR slope >0.75 ml/min per 1.73 m2 per year, documenting the kidney function preservation underlying the clinical benefits of ertugliflozin on kidney disease progression in patients with type 2 diabetes mellitus and atherosclerotic cardiovascular disease. CLINICAL TRIAL REGISTRY NAME AND REGISTRATION NUMBER US National Library of Medicine, ClinicalTrials.gov NCT01986881. Date of trial registration: November 13, 2013.
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Affiliation(s)
- David Z I Cherney
- University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Francesco Cosentino
- Unit of Cardiology, Karolinska Institute & Karolinska University Hospital, Stockholm, Sweden
| | - Samuel Dagogo-Jack
- Division of Endocrinology, Diabetes, and Metabolism, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Darren K McGuire
- Division of Cardiology, University of Texas Southwestern Medical Center and Parkland Health and Hospital System, Dallas, Texas
| | - Richard Pratley
- AdventHealth Translational Research Institute, Orlando, Florida
| | | | | | | | - Jie Liu
- Merck & Co., Inc., Kenilworth, New Jersey
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De Vriese AS, Wetzels JF, Glassock RJ, Sethi S, Fervenza FC. Therapeutic trials in adult FSGS: lessons learned and the road forward. Nat Rev Nephrol 2021; 17:619-630. [PMID: 34017116 PMCID: PMC8136112 DOI: 10.1038/s41581-021-00427-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/09/2021] [Indexed: 02/03/2023]
Abstract
Focal segmental glomerulosclerosis (FSGS) is not a specific disease entity but a lesion that primarily targets the podocyte. In a broad sense, the causes of the lesion can be divided into those triggered by a presumed circulating permeability factor, those that occur secondary to a process that might originate outside the kidneys, those caused by a genetic mutation in a podocyte or glomerular basement membrane protein, and those that arise through an as yet unidentifiable process, seemingly unrelated to a circulating permeability factor. A careful attempt to correctly stratify patients with FSGS based on their clinical presentation and pathological findings on kidney biopsy is essential for sound treatment decisions in individual patients. However, it is also essential for the rational design of therapeutic trials in FSGS. Greater recognition of the pathophysiology underlying podocyte stress and damage in FSGS will increase the likelihood that the cause of an FSGS lesion is properly identified and enable stratification of patients in future interventional trials. Such efforts will facilitate the identification of effective therapeutic agents.
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Affiliation(s)
- An S De Vriese
- Division of Nephrology and Infectious Diseases, AZ Sint-Jan Brugge, Brugge, Belgium
- Department of Internal Medicine, Ghent University, Ghent, Belgium
| | - Jack F Wetzels
- Department of Nephrology, Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands
| | - Richard J Glassock
- Department of Medicine, Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Sanjeev Sethi
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
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Inker LA, Heerspink HJL, Tighiouart H, Chaudhari J, Miao S, Diva U, Mercer A, Appel GB, Donadio JV, Floege J, Li PKT, Maes BD, Locatelli F, Praga M, Schena FP, Levey AS, Greene T. Association of Treatment Effects on Early Change in Urine Protein and Treatment Effects on GFR Slope in IgA Nephropathy: An Individual Participant Meta-analysis. Am J Kidney Dis 2021; 78:340-349.e1. [PMID: 33775708 PMCID: PMC8384669 DOI: 10.1053/j.ajkd.2021.03.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 03/03/2021] [Indexed: 01/18/2023]
Abstract
RATIONALE & OBJECTIVE An early change in proteinuria is considered a reasonably likely surrogate end point in immunoglobulin A nephropathy (IgAN) and can be used as a basis for accelerated approval of therapies, with verification in a postmarketing confirmatory trial. Glomerular filtration rate (GFR) slope is a recently validated surrogate end point for chronic kidney disease progression and may be considered as the end point used for verification. We undertook a meta-analysis of clinical trials in IgAN to compare treatment effects on change in proteinuria versus change in estimated GFR (eGFR) slope. STUDY DESIGN Individual patient-level meta-analysis. SETTING & STUDY POPULATIONS Individual data of 1,037 patients from 12 randomized trials. SELECTION CRITERIA FOR STUDIES Randomized trials of IgAN with proteinuria measurements at baseline and 6 (range, 2.5-14) months and at least a further 1 year of follow-up for the clinical outcome. ANALYTICAL APPROACH For each trial, we estimated the treatment effects on proteinuria and on the eGFR slope, computed as the total slope starting at baseline or the chronic slope starting 3 months after randomization. We used a Bayesian mixed-effects analysis to relate the treatment effects on proteinuria to effects on GFR slope across these studies and developed a prediction model for the treatment effect on the GFR slope based on the effect on proteinuria. RESULTS Across all studies, treatment effects on proteinuria accurately predicted treatment effects on the total slope at 3 years (median R2 = 0.88; 95% Bayesian credible interval [BCI], 0.06-1) and on the chronic slope (R2 = 0.98; 95% BCI, 0.29-1). For future trials, an observed treatment effect of approximately 30% reduction in proteinuria would confer probabilities of at least 90% for nonzero treatment benefits on the total and chronic slopes of eGFR. We obtained similar results for proteinuria at 9 and 12 months and total slope at 2 years. LIMITATIONS Study population restricted to 12 trials of small sample size, leading to wide BCIs. There was heterogeneity among trials with respect to study design and interventions. CONCLUSIONS These results provide new evidence supporting that early reduction in proteinuria can be used as a surrogate end point for studies of chronic kidney disease progression in IgAN.
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Affiliation(s)
- Lesley A Inker
- Division of Nephrology, Tufts Medical Center, Boston, MA.
| | - Hiddo J L Heerspink
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Hocine Tighiouart
- Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, MA; Tufts Clinical and Translational Science Institute, Tufts University, Boston, MA
| | - Juhi Chaudhari
- Division of Nephrology, Tufts Medical Center, Boston, MA
| | - Shiyuan Miao
- Division of Nephrology, Tufts Medical Center, Boston, MA
| | - Ulysses Diva
- Biometrics, Travere Therapeutics Inc, San Diego, CA
| | - Alex Mercer
- Clinical Drug Development, JAMCO Pharma Consulting AB, Stockholm, Sweden
| | - Gerald B Appel
- Division of Nephrology, Columbia University Medical Center and the New York Presbyterian Hospital, New York, NY
| | | | - Jürgen Floege
- Division of Nephrology and Immunology, RWTH Aachen University, Aachen, Germany
| | - Philip K T Li
- Division of Nephrology, Prince of Wales Hospital, Chinese University of Hong Kong, Shatin, Hong Kong
| | - Bart D Maes
- Department of Nephrology, AZ Delta, Roeselare, Belgium
| | | | - Manuel Praga
- Instituto de Investigación Hospital Universitario 12 de Octubre, i+12, Complutense University, Madrid, Spain
| | - Francesco P Schena
- Renal, Dialysis and Transplant Unit, Department of Emergency and Organ Transplantation, University of Bari, Bari, Italy
| | - Andrew S Levey
- Division of Nephrology, Tufts Medical Center, Boston, MA
| | - Tom Greene
- Departments of Population Health Sciences and Internal Medicine, University of Utah, Salt Lake City, UT
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Kim K, Baek E, Go S, Son HE, Ryu JY, Yi Y, Jeong JC, Kim S, Chin HJ. Effect of estimating equations for glomerular filtration rate on novel surrogate markers for renal outcome. Kidney Res Clin Pract 2021; 40:220-230. [PMID: 34162048 PMCID: PMC8237122 DOI: 10.23876/j.krcp.20.210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 12/24/2020] [Indexed: 01/14/2023] Open
Abstract
Backgrounds Recently, alternative surrogate endpoints such as a 30% or 40% decline in estimated glomerular filtration rate (eGFR) or eGFR slope over 2 to 3 years have been proposed for predicting renal outcomes. However, the impact of GFR estimation methods on the accuracy and effectiveness of surrogate markers is unknown. Methods We retrospectively enrolled participants in health screening programs at three hospitals from 1995 to 2009. We defined two different participant groups as YR1 and YR3, which had available 1-year or 3-year eGFR values along with their baseline eGFR levels. We compared the effectiveness of eGFR percentage change or slope to estimate end-stage renal disease (ESRD) risk according to two estimating equations (modified Modification of Diet in Renal Disease equation [eGFRm] and Chronic Kidney Disease-Epidemiology Collaboration (CKD-EPI) equation [eGFRc]) for GFR. Results In the YR1 and YR3 groups, 9,971 and 10,171 candidates were enrolled and ESRD incidence during follow-up was 0.26% and 0.19%, respectively. The eGFR percentage change was more effective than eGFR slope in estimating ESRD risk, regardless of the method of estimation. A 40% of decline in eGFR was better than 30%, and a 3-year baseline period was better than a 1-year period for prediction accuracy. Although some diagnostic indices from the CKD-EPI equation were better, we found no significant differences in the discriminative ability and hazard ratios for incident ESRD between eGFRc and eGFRm in either eGFR percentage change or eGFR slope. Conclusion There were no significant differences in the prediction accuracy of GFR percentage change or eGFR slope between eGFRc and eGFRm in the general population.
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Affiliation(s)
- Kipyo Kim
- Division of Nephrology and Hypertension, Department of Internal Medicine, Inha University College of Medicine, Incheon, Republic of Korea
| | - Eunji Baek
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Suryeong Go
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Hyung-Eun Son
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Ji-Young Ryu
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Yongjin Yi
- Division of Nephrology, Department of Internal Medicine, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Republic of Korea
| | - Jong Cheol Jeong
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Sejoong Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Ho Jun Chin
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
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Oshima M, Toyama T, Hara A, Shimizu M, Kitajima S, Iwata Y, Sakai N, Furuichi K, Haneda M, Babazono T, Yokoyama H, Iseki K, Araki SI, Ninomiya T, Hara S, Suzuki Y, Iwano M, Kusano E, Moriya T, Satoh H, Nakamura H, Makino H, Wada T. Combined changes in albuminuria and kidney function and subsequent risk for kidney failure in type 2 diabetes. BMJ Open Diabetes Res Care 2021; 9:9/1/e002311. [PMID: 34193460 PMCID: PMC8246293 DOI: 10.1136/bmjdrc-2021-002311] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 05/29/2021] [Indexed: 01/10/2023] Open
Abstract
INTRODUCTION Changes in albuminuria or estimated glomerular filtration rate (eGFR) can be used as a surrogate endpoint of end-stage kidney disease (ESKD) in people with type 2 diabetes. We investigated whether the combined changes in albuminuria and eGFR are more strongly associated with future risk of ESKD. RESEARCH DESIGN AND METHODS Using data from a multicenter observational cohort study of people with type 2 diabetes, we evaluated the association of percentage change in urine albumin to creatinine ratio (UACR) and/or annual change in eGFR over 2 years with subsequent ESKD risk. RESULTS Among 1417 patients with repeated albuminuria and eGFR over 2 years, 129 (9.1%) developed ESKD. Patients with >30% UACR decline had lower ESKD risk (HR 0.47; 95% CI 0.29 to 0.77), whereas those with >30% UACR increase had higher ESKD risk (HR 2.31; 95% CI 1.52 to 3.51), compared with those with minor UACR change. Patients with greater eGFR decline had an increased ESKD risk than those with minor eGFR change (a decline of <2.5 mL/min/1.73 m2/year): HR 4.19 (95% CI 1.87 to 9.38) and 2.89 (95% CI 1.32 to 6.33) for those with a decline of >5 and 2.5-5 mL/min/1.73 m2/year, respectively. When the combined changes in UACR and eGFR were used, the highest ESKD risk (HR 5.60; 95% CI 2.08 to 15.09) was observed among patients with >30% UACR increase and an eGFR decline of >5 mL/min/1.73 m2/year compared with those with a minor change in UACR and eGFR. CONCLUSIONS Combined changes in albuminuria and eGFR over 2 years were strongly associated with future risk of kidney failure in patients with type 2 diabetes.
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Affiliation(s)
- Megumi Oshima
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Tadashi Toyama
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
- Innovative Clinical Research Center, Kanazawa University, Kanazawa, Japan
| | - Akinori Hara
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
- Department of Environmental and Preventive Medicine, Kanazawa University, Kanazawa, Japan
| | - Miho Shimizu
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Shinji Kitajima
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Kengo Furuichi
- Nephrology, Kanazawa Medical University, Kahoku-gun, Japan
| | - Masakazu Haneda
- Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Tetsuya Babazono
- Diabetes Center, Tokyo Women's Medical University, Shinjuku-ku, Japan
| | | | | | - Shin-Ichi Araki
- Department of Medicine, Shiga University of Medical Science, Otsu, Japan
| | - Toshiharu Ninomiya
- Department of Epidemiology and Public Health, Kyushu University, Fukuoka, Japan
| | - Shigeko Hara
- Okinaka Memorial Institute for Medical Research, Minato-ku, Japan
- Center of Health Management, Toranomon Hospital, Minato-ku, Japan
| | - Yoshiki Suzuki
- Health Administration Center, Niigata University, Niigata, Japan
| | - Masayuki Iwano
- Division of Nephrology, University of Fukui, Fukui, Japan
| | - Eiji Kusano
- Department of Internal Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Tatsumi Moriya
- Health Care Center, Kitasato University, Minato-ku, Japan
| | - Hiroaki Satoh
- Department of Metabolism and Endocrinology, Juntendo University School of Medicine Graduate School of Medicine, Bunkyo-ku, Japan
| | - Hiroyuki Nakamura
- Department of Environmental and Preventive Medicine, Kanazawa University, Kanazawa, Japan
| | | | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
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Nugent J, Aklilu A, Yamamoto Y, Simonov M, Li F, Biswas A, Ghazi L, Greenberg J, Mansour S, Moledina D, Wilson FP. Assessment of Acute Kidney Injury and Longitudinal Kidney Function After Hospital Discharge Among Patients With and Without COVID-19. JAMA Netw Open 2021; 4:e211095. [PMID: 33688965 PMCID: PMC7948062 DOI: 10.1001/jamanetworkopen.2021.1095] [Citation(s) in RCA: 99] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 01/18/2021] [Indexed: 12/13/2022] Open
Abstract
Importance Acute kidney injury (AKI) occurs in up to half of patients hospitalized with coronavirus disease 2019 (COVID-19). The longitudinal effects of COVID-19-associated AKI on kidney function remain unknown. Objective To compare the rate of change in estimated glomerular filtration rate (eGFR) after hospital discharge between patients with and without COVID-19 who experienced in-hospital AKI. Design, Setting, and Participants A retrospective cohort study was conducted at 5 hospitals in Connecticut and Rhode Island from March 10 to August 31, 2020. Patients who were tested for COVID-19 and developed AKI were screened, and those who survived past discharge, did not require dialysis within 3 days of discharge, and had at least 1 outpatient creatinine level measurement following discharge were included. Exposures Diagnosis of COVID-19. Main Outcomes and Measures Mixed-effects models were used to assess the association between COVID-19-associated AKI and eGFR slope after discharge. The secondary outcome was the time to AKI recovery for the subgroup of patients whose kidney function had not returned to the baseline level by discharge. Results A total of 182 patients with COVID-19-associated AKI and 1430 patients with AKI not associated with COVID-19 were included. The population included 813 women (50.4%); median age was 69.7 years (interquartile range, 58.9-78.9 years). Patients with COVID-19-associated AKI were more likely to be Black (73 [40.1%] vs 225 [15.7%]) or Hispanic (40 [22%] vs 126 [8.8%]) and had fewer comorbidities than those without COVID-19 but similar rates of preexisting chronic kidney disease and hypertension. Patients with COVID-19-associated AKI had a greater decrease in eGFR in the unadjusted model (-11.3; 95% CI, -22.1 to -0.4 mL/min/1.73 m2/y; P = .04) and after adjusting for baseline comorbidities (-12.4; 95% CI, -23.7 to -1.2 mL/min/1.73 m2/y; P = .03). In the fully adjusted model controlling for comorbidities, peak creatinine level, and in-hospital dialysis requirement, the eGFR slope difference persisted (-14.0; 95% CI, -25.1 to -2.9 mL/min/1.73 m2/y; P = .01). In the subgroup of patients who had not achieved AKI recovery by discharge (n = 319), COVID-19-associated AKI was associated with decreased kidney recovery during outpatient follow-up (adjusted hazard ratio, 0.57; 95% CI, 0.35-0.92). Conclusions and Relevance In this cohort study of US patients who experienced in-hospital AKI, COVID-19-associated AKI was associated with a greater rate of eGFR decrease after discharge compared with AKI in patients without COVID-19, independent of underlying comorbidities or AKI severity. This eGFR trajectory may reinforce the importance of monitoring kidney function after AKI and studying interventions to limit kidney disease after COVID-19-associated AKI.
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Affiliation(s)
- James Nugent
- Section of Nephrology, Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut
| | - Abinet Aklilu
- Clinical and Translational Research Accelerator, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Yu Yamamoto
- Clinical and Translational Research Accelerator, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Michael Simonov
- Clinical and Translational Research Accelerator, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Fan Li
- Department of Biostatistics, Yale University School of Public Health, New Haven, Connecticut
| | - Aditya Biswas
- Clinical and Translational Research Accelerator, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Lama Ghazi
- Clinical and Translational Research Accelerator, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Jason Greenberg
- Section of Nephrology, Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut
- Clinical and Translational Research Accelerator, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Sherry Mansour
- Clinical and Translational Research Accelerator, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Dennis Moledina
- Clinical and Translational Research Accelerator, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - F. Perry Wilson
- Clinical and Translational Research Accelerator, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
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Durkin M, Blais J. Linear Projection of Estimated Glomerular Filtration Rate Decline with Canagliflozin and Implications for Dialysis Utilization and Cost in Diabetic Nephropathy. Diabetes Ther 2021; 12:499-508. [PMID: 33340064 PMCID: PMC7846621 DOI: 10.1007/s13300-020-00953-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 10/20/2020] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Diabetes is a common cause of end-stage kidney disease leading to dialysis or kidney transplantation. Estimated glomerular filtration rate (eGFR) measures kidney function, and differences in the rate (slope) of eGFR decline can be used to assess treatment effects on kidney function over time. In the CREDENCE trial, the sodium glucose co-transporter 2 inhibitor canagliflozin slowed the rate of eGFR decline by 60% compared to placebo in patients with diabetes and chronic kidney disease. This analysis utilized eGFR slopes from CREDENCE to estimate the difference in time to dialysis by treatment arm and estimated the economic value of that delay. METHODS A linear decline in eGFR and maintenance of stable therapy were assumed for the canagliflozin and placebo arms in CREDENCE. Mean eGFR over time was calculated using acute (baseline to week 3) and chronic (week 3 onward) slopes. Reaching eGFR of 10 ml/min/1.73 m2 was assumed to represent the need for chronic dialysis. The difference in time to dialysis between treatments was calculated. Based on the average duration of dialysis, annual dialysis costs were determined, discounting 2020 US dollars at an inflation rate of 4%. RESULTS Following the acute and chronic eGFR slopes, the projected time to dialysis was 22.85 years for canagliflozin and 9.90 years for placebo. Based on 95% confidence intervals from CREDENCE, the model-estimated difference in time to dialysis was 9.27-17.48 years. With a mean baseline participant age of 63 years, the delay in dialysis with canagliflozin would be associated with a reduction in dialysis costs of approximately $170,000 per patient in 2020 dollars. CONCLUSION Using clinical trial data, canagliflozin treatment was projected to delay dialysis by approximately 13 years, which could translate to a substantial cost savings. More precise estimates should be investigated with considerations for nonlinear eGFR slope trajectory, competing risks, and patient characteristics. TRIAL REGISTRATION ClinicalTrials.gov identifier, NCT02065791.
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Affiliation(s)
- Michael Durkin
- Janssen Scientific Affairs, LLC, 1125 Trenton-Harbourton Road, Titusville, NJ, 08560, USA.
| | - Jaime Blais
- Janssen Scientific Affairs, LLC, 1125 Trenton-Harbourton Road, Titusville, NJ, 08560, USA
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Belur Nagaraj S, Pena MJ, Ju W, Heerspink HL. Machine-learning-based early prediction of end-stage renal disease in patients with diabetic kidney disease using clinical trials data. Diabetes Obes Metab 2020; 22:2479-2486. [PMID: 32844582 PMCID: PMC7756814 DOI: 10.1111/dom.14178] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/18/2020] [Accepted: 08/23/2020] [Indexed: 12/11/2022]
Abstract
AIM To predict end-stage renal disease (ESRD) in patients with type 2 diabetes by using machine-learning models with multiple baseline demographic and clinical characteristics. MATERIALS AND METHODS In total, 11 789 patients with type 2 diabetes and nephropathy from three clinical trials, RENAAL (n = 1513), IDNT (n = 1715) and ALTITUDE (n = 8561), were used in this study. Eighteen baseline demographic and clinical characteristics were used as predictors to train machine-learning models to predict ESRD (doubling of serum creatinine and/or ESRD). We used the area under the receiver operator curve (AUC) to assess the prediction performance of models and compared this with traditional Cox proportional hazard regression and kidney failure risk equation models. RESULTS The feed forward neural network model predicted ESRD with an AUC of 0.82 (0.76-0.87), 0.81 (0.75-0.86) and 0.84 (0.79-0.90) in the RENAAL, IDNT and ALTITUDE trials, respectively. The feed forward neural network model selected urinary albumin to creatinine ratio, serum albumin, uric acid and serum creatinine as important predictors and obtained a state-of-the-art performance for predicting long-term ESRD. CONCLUSIONS Despite large inter-patient variability, non-linear machine-learning models can be used to predict long-term ESRD in patients with type 2 diabetes and nephropathy using baseline demographic and clinical characteristics. The proposed method has the potential to create accurate and multiple outcome prediction automated models to identify high-risk patients who could benefit from therapy in clinical practice.
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Affiliation(s)
- Sunil Belur Nagaraj
- Department of Clinical Pharmacy & PharmacologyUniversity of Groningen, University Medical Center GroningenGroningenthe Netherlands
| | - Michelle J. Pena
- Department of Clinical Pharmacy & PharmacologyUniversity of Groningen, University Medical Center GroningenGroningenthe Netherlands
| | - Wenjun Ju
- University of MichiganAnn ArborMichiganUSA
| | - Hiddo L. Heerspink
- Department of Clinical Pharmacy & PharmacologyUniversity of Groningen, University Medical Center GroningenGroningenthe Netherlands
- The George Institute for Global HealthSydneyAustralia
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61
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von Moos S, Cippà PE, van Breemen R, Mueller TF. HLA antibodies are associated with deterioration of kidney allograft function irrespective of donor specificity. Hum Immunol 2020; 82:19-24. [PMID: 33162184 DOI: 10.1016/j.humimm.2020.10.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 10/23/2020] [Accepted: 10/23/2020] [Indexed: 01/18/2023]
Abstract
BACKGROUND Donor-specific antibodies are associated with high immunological risk and poor allograft outcome. Risk and clinical relevance of non-donor-specific HLA antibodies is less clear. METHODS A retrospective single-center study was conducted in all patients receiving a first kidney transplant at the University hospital of Zürich between 01/2006 and 02/2015. Patients were stratified into 3 groups having either no HLA antibodies at all (NoAB), HLA antibodies with donor specificity (DSA) and HLA antibodies without donor specificity (NonDSA). Allograft outcome was assessed using the slope of the estimated glomerular filtration rate (eGFR slope) starting at 12 months after transplantation. RESULTS During a median follow-up of 1808 days HLA antibodies were detected in 106 of 238 eligible patients (44%). Out of these, 73 patients (69%) had DSA and 33 patients (31%) had NonDSA only. Medium-term allograft function, as determined by eGFR slope over three years, improved in patients with NoAB (months 12-48: +0.7 ml/min/1.73 m2) but deteriorated significantly in patients with both DSA (months 12-48: -1.5 ml/min per1.73 m2/year, p = 0.015) and NonDSA (months 12-48: -1.8 ml/min per1.73 m2/year, p = 0.03) as compared to the group with NoAB. CONCLUSION Both, donor-specific and non-donor-specific HLA antibodies are associated with medium-term kidney allograft dysfunction as compared to patients with no HLA antibodies.
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Affiliation(s)
- Seraina von Moos
- Division of Nephrology, University Hospital Zürich, Zürich, Switzerland.
| | - Pietro E Cippà
- Division of Nephrology, Ente Ospedaliero Cantonale, Lugano, Switzerland.
| | - Rob van Breemen
- Division of Informatics, University Hospital Zürich, Zürich, Switzerland.
| | - Thomas F Mueller
- Division of Nephrology, University Hospital Zürich, Zürich, Switzerland.
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Abstract
PURPOSE OF REVIEW There is a paucity of therapies for chronic kidney disease (CKD), in part because of the slow nature of the disease which poses challenges in selection of endpoints in randomized controlled trials (RCT). There is increasing evidence for the use of glomerular filtration rate (GFR)-based endpoints either as percentage decline using time-to-event analyses, or as difference in slope between treatment arms. We reviewed the rationale for using surrogate endpoints and optimal methods for their evaluation prior to their use and evidence for GFR-based endpoints and particularly GFR slope as validated surrogate endpoints and considerations for their use in RCTs. RECENT FINDINGS In an individual patient meta-analysis of 47 studies (60 620 participants), treatment effects on the clinical endpoint were accurately predicted from treatment effects on 3-year total slope [median R = 0.97 (95% Bayesian confidence interval (BCI), 0.78-1.00] and on the chronic slope [R = 0.96 (95% BCI, 0.63-1.00)]. In a simulation study, GFR slope substantially reduced the required sample size and duration of follow-up compared to the clinical endpoint given high baseline GFR and absence of acute treatment effect. In the presence of acute effect, results were more complicated. SUMMARY GFR decline is accepted, and GFR slope is being considered, by regulatory authorities as a validated surrogate endpoint for CKD RCTs.
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Pyne L, Walsh M. Allopurinol: Good for Gout But Not for Preventing Loss of Kidney Function. Am J Kidney Dis 2020; 77:459-461. [PMID: 32920152 DOI: 10.1053/j.ajkd.2020.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 09/02/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Lonnie Pyne
- Department of Medicine, McMaster University, Hamilton, Canada; Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Canada; Population Health Research Institute, Hamilton Health Sciences/McMaster University, Hamilton, Canada
| | - Michael Walsh
- Department of Medicine, McMaster University, Hamilton, Canada; Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Canada; Population Health Research Institute, Hamilton Health Sciences/McMaster University, Hamilton, Canada.
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Ueki K, Sasako T, Okazaki Y, Miyake K, Nangaku M, Ohashi Y, Noda M, Kadowaki T. Multifactorial intervention has a significant effect on diabetic kidney disease in patients with type 2 diabetes. Kidney Int 2020; 99:256-266. [PMID: 32891604 DOI: 10.1016/j.kint.2020.08.012] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 08/05/2020] [Accepted: 08/13/2020] [Indexed: 11/16/2022]
Abstract
To evaluate the effect of multifactorial intervention on the onset and progression of diabetic kidney disease in the patients with type 2 diabetes, we analyzed the effects of intensified multifactorial intervention by step-wise intensification of medications and life-style modifications (intensive therapy treatment targets; HbA1c under 6.2%, blood pressure under 120/75 mmHg, low-density lipoprotein cholesterol under 80 mg/dL) comparing with the guideline-based standard care (conventional therapy treatment targets: HbA1c under 6.9%, blood pressure under 130/80 mmHg, low-density lipoprotein cholesterol under 120 mg/dL) on diabetic kidney disease. A total of 2540 eligible patients in the Japan Diabetes Optimal Integrated Treatment for three major risk factors of cardiovascular diseases (J-DOIT3) cohort were randomly assigned to intensive therapy (1269) and conventional therapy (1271) and treated for a median of 8.5 years. The prespecified kidney outcome measure was a composite of progression from normoalbuminuria to microalbuminuria or progression from normoalbuminuria to macroalbuminuria or progression from microalbuminuria to macroalbuminuria, serum creatinine levels elevated by two-fold or more compared to baseline, or kidney failure. Primary analysis was carried out on the intention-to-treat population. Changes in the estimated glomerular filtration rate and albuminuria were also analyzed. A total of 438 kidney events occurred (181 in the intensive therapy group and 257 in the conventional therapy group). Intensive therapy was associated with a significant 32% reduction in kidney events compared to conventional therapy and was associated with a change in HbA1c at one year from study initiation. Thus, prespecified analysis shows that intensified multifactorial intervention significantly reduced the onset and progression of diabetic kidney disease compared to currently recommended care.
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Affiliation(s)
- Kohjiro Ueki
- Department of Molecular Diabetic Medicine, Diabetes Research Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Takayoshi Sasako
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yukiko Okazaki
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan; Department of Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kana Miyake
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masaomi Nangaku
- Department of Nephrology and Endocrinology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yasuo Ohashi
- Department of Integrated Science and Engineering for Sustainable Society, Chuo University, Tokyo, Japan
| | - Mitsuhiko Noda
- Department of Diabetes, Metabolism and Endocrinology, Ichikawa Hospital, International University of Health and Welfare, Chiba, Japan; Department of Endocrinology and Diabetes, Saitama Medical University, Saitama, Japan
| | - Takashi Kadowaki
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan; Department of Prevention of Diabetes and Lifestyle-Related Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan; Toranomon Hospital, Tokyo, Japan.
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Cabrera CS, Lee AS, Olsson M, Schnecke V, Westman K, Lind M, Greasley PJ, Skrtic S. Impact of CKD Progression on Cardiovascular Disease Risk in a Contemporary UK Cohort of Individuals With Diabetes. Kidney Int Rep 2020; 5:1651-1660. [PMID: 33102957 PMCID: PMC7569691 DOI: 10.1016/j.ekir.2020.07.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 06/29/2020] [Accepted: 07/28/2020] [Indexed: 01/12/2023] Open
Abstract
Introduction It remains unclear whether an increased progression rate of chronic kidney disease (CKD) adds predictive information regarding cardiovascular disease (CVD) risk. The aim of this study was to evaluate the association between CKD progression, based on estimated glomerular filtration rate (eGFR) slope estimates and the risk for CVD. Methods We compared the updated eGFR slope calculated over multiple overlapping 2-year periods and the updated mean eGFR. Incident CKD subjects were selected from a prevalent population with diabetes (T2DM). Subjects from the UK Clinical Practice Research Data Link GOLD (CPRD) were followed from CKD diagnosis (n = 30,222) until heart failure (HF), myocardial infarction (MI), ischemic stroke (IS), or a composite end point including all 3 event types (MACE plus), mortality, database dropout, or end of study follow-up. Results Both the updated eGFR slope and updated mean eGFR were associated with MACE plus and HF. Updated eGFR slope decline of > –3 ml/min/1.73 m2 increased the risk for MACE plus (adjusted hazard ratio [HR] = 1.45; 95% confidence interval [CI], 1.26–1.67), HF (HR = 1.50; 95% CI, 1.27–1.76), and MI (HR = 1.39; 95% CI, 1.01–1.91). Conclusions This study strongly supports current evidence that CKD is an independent risk factor for CVD. From a clinical perspective, both rate of progression and cumulative status of CKD describe distinct aspects of the cardiorenal risk among persons with diabetes. This evidence is essential to enable more timely and improved use of treatments in this population.
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Affiliation(s)
- Claudia S Cabrera
- Real World Science and Digital, BioPharmaceuticals Medical, AstraZeneca, Gothenburg, Sweden.,Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - Alison S Lee
- Commonwealth Informatics, Inc., Waltham, Massachusetts, USA
| | - Marita Olsson
- AstraZeneca, Gothenburg, Sweden.,Department of Mathematical Sciences, Chalmers University of Technology, Gothenburg, Sweden
| | | | - Klara Westman
- Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Marcus Lind
- Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Medicine, NU-Hospital Group, Uddevalla Hospital, Uddevalla, Sweden
| | - Peter J Greasley
- AstraZeneca, Gothenburg, Sweden.,Early Clinical Development, Research and Early Development, Cardiovascular, Renal, and Metabolism (CVRM) BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Stanko Skrtic
- Innovation Strategies and External Liaison, Pharmaceutical Technology and Development, AstraZeneca Gothenburg, Gothenburg, Sweden.,Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Grossi AA, Maggiore U, Puoti F, Grossi PA, Picozzi M, Cardillo M. Association of immigration background with kidney graft function in a publicly funded health system: a nationwide retrospective cohort study in Italy. Transpl Int 2020; 33:1405-1416. [PMID: 32621764 DOI: 10.1111/tri.13688] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 02/26/2020] [Accepted: 06/29/2020] [Indexed: 11/29/2022]
Abstract
The impact of immigration background on kidney graft function (eGFR) is unknown. Italy has a publicly funded health system with universal coverage. Since immigration from non-European Union (EU) countries beyond Eastern Europe is a recent and extensive phenomenon, Italy is a rather unique setting for studying the effect of immigration status as a socioeconomic and cultural condition. We retrospectively identified all adult deceased donor kidney transplant recipients (KTRs) in Italy (2010-2015) and followed them until death, dialysis or 5-years post-transplantation; 6346 were EU-born, 161 Eastern European-born, and 490 non-European-born. We examined changes in eGFR after 1-year post-transplant using multivariable-adjusted joint longitudinal survival random-intercept Cox regression. Compared to EU-born KTRs, in non-European-born KTRs the adjusted average yearly eGFR decline was -0.96 ml/min/year (95% confidence interval: -1.48 to -0.45; P < 0.001), whereas it was similar in Eastern European-born KTRs [+0.02 ml/min/year (-0.77 to +0.81; P = 0.96)]. Adjusted 5-year transplant survival did not statistically differ between non-European-born, Eastern European-born, and EU-born. In those surviving beyond 1-year, it was 91.8% in EU-born (87.1-96.8), 92.5% in Eastern European-born (86.1-99.4), and 89.3% in non-European-born KTRs (83.0-96.0). This study provides evidence that among EU KTRs, non-European immigration background is associated with eGFR decline.
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Affiliation(s)
- Alessandra Agnese Grossi
- Department of Biotechnologies and Life Sciences, Center for Clinical Ethics, University of Insubria, Varese, Italy
| | - Umberto Maggiore
- Nephrology Unit, Dipartimento di Medicina e Chirurgia, Università di Parma, Parma, Italy
| | - Francesca Puoti
- Italian National Transplant Center (CNT), Istituto Superiore di Sanità, Rome, Italy
| | - Paolo Antonio Grossi
- Italian National Transplant Center (CNT), Istituto Superiore di Sanità, Rome, Italy.,Infectious Diseases Unit, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Mario Picozzi
- Department of Biotechnologies and Life Sciences, Center for Clinical Ethics, University of Insubria, Varese, Italy
| | - Massimo Cardillo
- Italian National Transplant Center (CNT), Istituto Superiore di Sanità, Rome, Italy
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Collard D, Brouwer TF, Olde Engberink RH, Zwinderman AH, Vogt L, van den Born BJH. Initial Estimated Glomerular Filtration Rate Decline and Long-Term Renal Function During Intensive Antihypertensive Therapy: A Post Hoc Analysis of the SPRINT and ACCORD-BP Randomized Controlled Trials. Hypertension 2020; 75:1205-1212. [PMID: 32223381 PMCID: PMC7176351 DOI: 10.1161/hypertensionaha.119.14659] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 01/23/2019] [Accepted: 01/28/2020] [Indexed: 01/13/2023]
Abstract
Lowering blood pressure (BP) can lead to an initial decline in estimated glomerular filtration rate (eGFR). However, there is debate how much eGFR decline is acceptable. We performed a post hoc analysis of ACCORD-BP (Action to Control Cardiovascular Risk in Diabetes-Blood Pressure) and SPRINT (Systolic Blood Pressure Intervention Trial), which randomized patients to intensive or standard systolic BP-targets. We determined the relation between initial decline in mean arterial pressure and eGFR. Subsequently, we stratified patients to BP-target and initial eGFR decrease and assessed the relation with annual eGFR decline after 1 year. A total of 13 266 patients with 41 126 eGFR measurements were analyzed. Up to 10 mm Hg of BP-lowering, eGFR did not change. Hereafter, there was a linear decrease of 3.4% eGFR (95% CI, 2.9%-3.9%) per 10 mm Hg mean arterial pressure decrease. The observed eGFR decline based on 95% of the subjects varied from 26% after 0 mm Hg to 46% with a 40 mm Hg mean arterial pressure decrease. There was no difference in eGFR slope (P=0.37) according to initial eGFR decline and BP-target, with a decrease of 1.24 (95% CI, 1.09-1.39), 1.20 (95% CI, 0.97-1.43), and 1.14 (95% CI, 0.77-1.50) in the 5%, 5% to 20%, and >20% stratum during intensive and 0.95 (95% CI, 0.81-1.09), 1.23 (95% CI, 0.97-1.49), and 1.17 (95% CI, 0.65-1.69) mL/minute per 1.73 m2 per year during standard treatment. In patients at high cardiovascular risk with and without diabetes mellitus, we found no association between initial eGFR and annual eGFR decline during BP-lowering treatment. Our results support that an eGFR decrease up to 20% after BP lowering can be accepted and suggest that the limit can be extended up to 46% depending on the achieved BP reduction. Registration- URL: https://www.clinicaltrials.gov; Unique identifier: NCT00000620, NCT01206062.
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Affiliation(s)
- Didier Collard
- From the Department of Vascular Medicine (D.C., B.-J.H.v.d.B.), Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Tom F. Brouwer
- Department of Clinical and Experimental Cardiology (T.F.B.), Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Rik H.G. Olde Engberink
- Department of Nephrology (R.H.G.O.E., L.V.), Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Aeilko H. Zwinderman
- Department of Clinical Epidemiology, Biostatistics and Bioinformatics (A.E.Z.), Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Liffert Vogt
- Department of Nephrology (R.H.G.O.E., L.V.), Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Bert-Jan H. van den Born
- From the Department of Vascular Medicine (D.C., B.-J.H.v.d.B.), Amsterdam UMC, University of Amsterdam, The Netherlands
- Department of Public Health (B.-J.H.v.d.B.), Amsterdam UMC, University of Amsterdam, The Netherlands
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de Boer IH, Zelnick LR, Ruzinski J, Friedenberg G, Duszlak J, Bubes VY, Hoofnagle AN, Thadhani R, Glynn RJ, Buring JE, Sesso HD, Manson JE. Effect of Vitamin D and Omega-3 Fatty Acid Supplementation on Kidney Function in Patients With Type 2 Diabetes: A Randomized Clinical Trial. JAMA 2019; 322:1899-1909. [PMID: 31703120 PMCID: PMC6865245 DOI: 10.1001/jama.2019.17380] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
IMPORTANCE Chronic kidney disease (CKD) is a common complication of type 2 diabetes that can lead to end-stage kidney disease and is associated with high cardiovascular risk. Few treatments are available to prevent CKD in type 2 diabetes. OBJECTIVE To test whether supplementation with vitamin D3 or omega-3 fatty acids prevents development or progression of CKD in type 2 diabetes. DESIGN, SETTING, AND PARTICIPANTS Randomized clinical trial with a 2 × 2 factorial design conducted among 1312 adults with type 2 diabetes recruited between November 2011 and March 2014 from all 50 US states as an ancillary study to the Vitamin D and Omega-3 Trial (VITAL), coordinated by a single center in Massachusetts. Follow-up was completed in December 2017. INTERVENTIONS Participants were randomized to receive vitamin D3 (2000 IU/d) and omega-3 fatty acids (eicosapentaenoic acid and docosahexaenoic acid; 1 g/d) (n = 370), vitamin D3 and placebo (n = 333), placebo and omega-3 fatty acids (n = 289), or 2 placebos (n = 320) for 5 years. MAIN OUTCOMES AND MEASURES The primary outcome was change in glomerular filtration rate estimated from serum creatinine and cystatin C (eGFR) from baseline to year 5. RESULTS Among 1312 participants randomized (mean age, 67.6 years; 46% women; 31% of racial or ethnic minority), 934 (71%) completed the study. Baseline mean eGFR was 85.8 (SD, 22.1) mL/min/1.73 m2. Mean change in eGFR from baseline to year 5 was -12.3 (95% CI, -13.4 to -11.2) mL/min/1.73 m2 with vitamin D3 vs -13.1 (95% CI, -14.2 to -11.9) mL/min/1.73 m2 with placebo (difference, 0.9 [95% CI, -0.7 to 2.5] mL/min/1.73 m2). Mean change in eGFR was -12.2 (95% CI, -13.3 to -11.1) mL/min/1.73 m2 with omega-3 fatty acids vs -13.1 (95% CI, -14.2 to -12.0) mL/min/1.73 m2 with placebo (difference, 0.9 [95% CI, -0.7 to 2.6] mL/min/1.73 m2). There was no significant interaction between the 2 interventions. Kidney stones occurred among 58 participants (n = 32 receiving vitamin D3 and n = 26 receiving placebo) and gastrointestinal bleeding among 45 (n = 28 receiving omega-3 fatty acids and n = 17 receiving placebo). CONCLUSIONS AND RELEVANCE Among adults with type 2 diabetes, supplementation with vitamin D3 or omega-3 fatty acids, compared with placebo, resulted in no significant difference in change in eGFR at 5 years. The findings do not support the use of vitamin D or omega-3 fatty acid supplementation for preserving kidney function in patients with type 2 diabetes. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT01684722.
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Affiliation(s)
- Ian H. de Boer
- Division of Nephrology, Department of Medicine, University of Washington, Seattle
- Kidney Research Institute, University of Washington, Seattle
- Puget Sound VA Healthcare System, Seattle, Washington
| | - Leila R. Zelnick
- Division of Nephrology, Department of Medicine, University of Washington, Seattle
- Kidney Research Institute, University of Washington, Seattle
| | - John Ruzinski
- Kidney Research Institute, University of Washington, Seattle
| | - Georgina Friedenberg
- Division of Preventive Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
| | - Julie Duszlak
- Division of Preventive Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
| | - Vadim Y. Bubes
- Division of Preventive Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
| | - Andrew N. Hoofnagle
- Division of Nephrology, Department of Medicine, University of Washington, Seattle
- Department of Laboratory Medicine, University of Washington, Seattle
| | - Ravi Thadhani
- Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California
| | - Robert J. Glynn
- Division of Preventive Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
- Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | - Julie E. Buring
- Division of Preventive Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
- Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | - Howard D. Sesso
- Division of Preventive Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
- Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | - JoAnn E. Manson
- Division of Preventive Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
- Harvard T. H. Chan School of Public Health, Boston, Massachusetts
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70
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Holtkamp F, Gudmundsdottir H, Maciulaitis R, Benda N, Thomson A, Vetter T. Change in Albuminuria and Estimated GFR as End Points for Clinical Trials in Early Stages of CKD: A Perspective From European Regulators. Am J Kidney Dis 2019; 75:6-8. [PMID: 31672251 DOI: 10.1053/j.ajkd.2019.07.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 07/30/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Frank Holtkamp
- Dutch Medicines Evaluation Board, Utrecht, the Netherlands
| | - Hrefna Gudmundsdottir
- Icelandic Medicines Agency, Reykjavík, Iceland; Landspitali - The National University Hospital of Iceland, Reykjavík, Iceland
| | - Romaldas Maciulaitis
- Institute of Physiology and Pharmacology, Lithuanian University of Health Sciences, Kaunas, Lithuania; Lithuanian State Medicines Control Agency, Kaunas, Lithuana
| | - Norbert Benda
- German Federal Institute for Drugs and Medical Devices, Bonn, Germany
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71
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Levey AS, Coresh J, Tighiouart H, Greene T, Inker LA. Measured and estimated glomerular filtration rate: current status and future directions. Nat Rev Nephrol 2019; 16:51-64. [DOI: 10.1038/s41581-019-0191-y] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/26/2019] [Indexed: 12/28/2022]
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72
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Levey AS, Gansevoort RT, Coresh J, Inker LA, Heerspink HL, Grams ME, Greene T, Tighiouart H, Matsushita K, Ballew SH, Sang Y, Vonesh E, Ying J, Manley T, de Zeeuw D, Eckardt KU, Levin A, Perkovic V, Zhang L, Willis K. Change in Albuminuria and GFR as End Points for Clinical Trials in Early Stages of CKD: A Scientific Workshop Sponsored by the National Kidney Foundation in Collaboration With the US Food and Drug Administration and European Medicines Agency. Am J Kidney Dis 2019; 75:84-104. [PMID: 31473020 DOI: 10.1053/j.ajkd.2019.06.009] [Citation(s) in RCA: 320] [Impact Index Per Article: 64.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 06/13/2019] [Indexed: 12/19/2022]
Abstract
The US Food and Drug Administration (FDA) and European Medicines Agency (EMA) are currently willing to consider a 30% to 40% glomerular filtration rate (GFR) decline as a surrogate end point for kidney failure for clinical trials of kidney disease progression under appropriate conditions. However, these end points may not be practical for early stages of kidney disease. In March 2018, the National Kidney Foundation sponsored a scientific workshop in collaboration with the FDA and EMA to evaluate changes in albuminuria or GFR as candidate surrogate end points. Three parallel efforts were presented: meta-analyses of observational studies (cohorts), meta-analyses of clinical trials, and simulations of trial design. In cohorts, after accounting for measurement error, relationships between change in urinary albumin-creatinine ratio (UACR) or estimated GFR (eGFR) slope and the clinical outcome of kidney disease progression were strong and consistent. In trials, the posterior median R2 of treatment effects on the candidate surrogates with the clinical outcome was 0.47 (95% Bayesian credible interval [BCI], 0.02-0.96) for early change in UACR and 0.72 (95% BCI, 0.05-0.99) when restricted to baseline UACR>30mg/g, and 0.97 (95% BCI, 0.78-1.00) for total eGFR slope at 3 years and 0.96 (95% BCI, 0.63-1.00) for chronic eGFR slope (ie, the slope excluding the first 3 months from baseline, when there might be acute changes in eGFR). The magnitude of the relationships of changes in the candidate surrogates with risk for clinical outcome was consistent across cohorts and trials: a UACR reduction of 30% or eGFR slope reduction by 0.5 to 1.0mL/min/1.73m2 per year were associated with an HR of ∼0.7 for the clinical outcome in cohorts and trials. In simulations, using GFR slope as an end point substantially reduced the required sample size and duration of follow-up compared with the clinical end point when baseline eGFR was high, treatment effects were uniform, and there was no acute effect of the treatment. We conclude that both early change in albuminuria and GFR slope fulfill criteria for surrogacy for use as end points in clinical trials for chronic kidney disease progression under certain conditions, with stronger support for change in GFR than albuminuria. Implementation requires understanding conditions under which each surrogate is likely to perform well and restricting its use to those settings.
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Affiliation(s)
- Andrew S Levey
- Division of Nephrology, Tufts Medical Center, Boston, MA.
| | - Ron T Gansevoort
- Department of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Josef Coresh
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Lesley A Inker
- Division of Nephrology, Tufts Medical Center, Boston, MA
| | - Hiddo L Heerspink
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, Groningen, the Netherlands
| | - Morgan E Grams
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD
| | - Tom Greene
- Division of Epidemiology, Department of Internal Medicine, University of Utah, Salt Lake City, UT
| | - Hocine Tighiouart
- The Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, MA; Tufts Clinical and Translational Science Institute, Tufts University, Boston, MA
| | - Kunihiro Matsushita
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Shoshana H Ballew
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Yingying Sang
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Edward Vonesh
- Division of Biostatistics, Department of Preventive Medicine, Northwestern University, Chicago, IL
| | - Jian Ying
- Division of Epidemiology, Department of Internal Medicine, University of Utah, Salt Lake City, UT
| | - Tom Manley
- National Kidney Foundation, New York, NY
| | - Dick de Zeeuw
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, Groningen, the Netherlands
| | - Kai-Uwe Eckardt
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Adeera Levin
- Division of Nephrology, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Vlado Perkovic
- George Institute for Global Health, UNSW, Sydney, Australia
| | - Luxia Zhang
- Peking University Institute of Nephrology, Beijing, China; Division of Nephrology, Peking University First Hospital, Beijing, China
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73
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Affiliation(s)
| | - Paul M Palevsky
- Deputy Editor, JASN, Washington, DC; and.,Renal Electrolyte Division, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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74
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Grams ME, Sang Y, Ballew SH, Matsushita K, Astor BC, Carrero JJ, Chang AR, Inker LA, Kenealy T, Kovesdy CP, Lee BJ, Levin A, Naimark D, Pena MJ, Schold JD, Shalev V, Wetzels JFM, Woodward M, Gansevoort RT, Levey AS, Coresh J. Evaluating Glomerular Filtration Rate Slope as a Surrogate End Point for ESKD in Clinical Trials: An Individual Participant Meta-Analysis of Observational Data. J Am Soc Nephrol 2019; 30:1746-1755. [PMID: 31292199 DOI: 10.1681/asn.2019010008] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 04/17/2019] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Decline in eGFR is a biologically plausible surrogate end point for the progression of CKD in clinical trials. However, it must first be tested to ensure strong associations with clinical outcomes in diverse populations, including patients with higher eGFR. METHODS To investigate the association between 1-, 2-, and 3-year changes in eGFR (slope) with clinical outcomes over the long term, we conducted a random effects meta-analysis of 3,758,551 participants with baseline eGFR≥60 ml/min per 1.73 m2 and 122,664 participants with eGFR<60 ml/min per 1.73 m2 from 14 cohorts followed for an average of 4.2 years. RESULTS Slower eGFR decline by 0.75 ml/min per 1.73 m2 per year over 2 years was associated with lower risk of ESKD in participants with baseline eGFR≥60 ml/min per 1.73 m2 (adjusted hazard ratio, 0.70; 95% CI, 0.68 to 0.72) and eGFR<60 ml/min per 1.73 m2 (0.71; 95% CI, 0.68 to 0.74). The relationship was stronger with 3-year slope. For a rapidly progressing population with predicted 5-year risk of ESKD of 8.3%, an intervention that reduced eGFR decline by 0.75 ml/min per 1.73 m2 per year over 2 years would reduce the ESKD risk by 1.6%. For a hypothetical low-risk population with a predicted 5-year ESKD risk of 0.58%, the same intervention would reduce the risk by only 0.13%. CONCLUSIONS Slower decline in eGFR was associated with lower risk of subsequent ESKD, even in participants with eGFR≥60 ml/min per 1.73 m2, but those with the highest risk would be expected to benefit the most.
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Affiliation(s)
- Morgan E Grams
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Yingying Sang
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Shoshana H Ballew
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Kunihiro Matsushita
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Brad C Astor
- Departments of Medicine and.,Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Juan Jesus Carrero
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Alex R Chang
- Geisinger Health System and Department of Epidemiology and Health Services Research, Geisinger Health System, Kidney Health Research Institute, Danville, Pennsylvania
| | - Lesley A Inker
- Division of Nephrology, Tufts Medical Center, Boston, Massachusetts
| | - Timothy Kenealy
- Departments of Medicine and.,General Practice & Primary Health Care, University of Auckland, Auckland, New Zealand
| | - Csaba P Kovesdy
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, Tennessee.,Nephrology Section, Memphis Veterans Affairs Medical Center, Memphis, Tennessee
| | - Brian J Lee
- Nephrology Division, Kaiser Permanente, Hawaii Region, Moanalua Medical Center, Honolulu, Hawaii
| | - Adeera Levin
- British Columbia Provincial Renal Agency and University of British Columbia, Vancouver, British Columbia, Canada
| | - David Naimark
- Department of Medicine and Institute of Health Policy, Management and Evaluation, Sunnybrook Hospital, University of Toronto, Toronto, Ontario, Canada
| | | | - Jesse D Schold
- Department of Quantitative Health Sciences and.,Center for Populations Health Research, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Varda Shalev
- Medical Division, Maccabi Healthcare Services, and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jack F M Wetzels
- Department of Nephrology, Radboud University Medical Center, Radboud Institute of Health Sciences, Nijmegen, The Netherlands
| | - Mark Woodward
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.,The George Institute for Global Health, University of Oxford, Oxford, United Kingdom; and.,The George Institute for Global Health, University of New South Wales, Sydney, New South Wales, Australia
| | - Ron T Gansevoort
- Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Andrew S Levey
- Division of Nephrology, Tufts Medical Center, Boston, Massachusetts
| | - Josef Coresh
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland;
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75
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Inker LA, Heerspink HJL, Tighiouart H, Levey AS, Coresh J, Gansevoort RT, Simon AL, Ying J, Beck GJ, Wanner C, Floege J, Li PKT, Perkovic V, Vonesh EF, Greene T. GFR Slope as a Surrogate End Point for Kidney Disease Progression in Clinical Trials: A Meta-Analysis of Treatment Effects of Randomized Controlled Trials. J Am Soc Nephrol 2019; 30:1735-1745. [PMID: 31292197 DOI: 10.1681/asn.2019010007] [Citation(s) in RCA: 160] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 04/26/2019] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Surrogate end points are needed to assess whether treatments are effective in the early stages of CKD. GFR decline leads to kidney failure, but regulators have not approved using differences in the change in GFR from the beginning to the end of a randomized, controlled trial as an end point in CKD because it is not clear whether small changes in the GFR slope will translate to clinical benefits. METHODS To assess the use of GFR slope as a surrogate end point for CKD progression, we performed a meta-analysis of 47 RCTs that tested 12 interventions in 60,620 subjects. We estimated treatment effects on GFR slope (mean difference in GFR slope between the randomized groups), for the total slope starting at baseline, chronic slope starting at 3 months after randomization, and on the clinical end point (doubling of serum creatinine, GFR<15 ml/min per 1.73 m2, or ESKD) for each study. We used Bayesian mixed-effects analyses to describe the association of treatment effects on GFR slope with the clinical end point and to test how well the GFR slope predicts a treatment's effect on the clinical end point. RESULTS Across all studies, the treatment effect on 3-year total GFR slope (median R 2=0.97; 95% Bayesian credible interval [BCI], 0.78 to 1.00) and on the chronic slope (R 2 0.96; 95% BCI, 0.63 to 1.00) accurately predicted treatment effects on the clinical end point. With a sufficient sample size, a treatment effect of 0.75 ml/min per 1.73 m2/yr or greater on total slope over 3 years or chronic slope predicts a clinical benefit on CKD progress with at least 96% probability. CONCLUSIONS With large enough sample sizes, GFR slope may be a viable surrogate for clinical end points in CKD RCTs.
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Affiliation(s)
| | | | - Hocine Tighiouart
- The Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, Massachusetts.,Tufts Clinical and Translational Science Institute, Tufts University, Boston, Massachusetts
| | | | - Josef Coresh
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Ron T Gansevoort
- Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | | | - Jian Ying
- Division of Epidemiology, Department of Internal Medicine, University of Utah, Salt Lake City, Utah
| | - Gerald J Beck
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, Ohio
| | - Christoph Wanner
- Division of Nephrology, University Hospital of Würzburg, Würzburg, Germany
| | - Jürgen Floege
- Division of Nephrology, RWTH Aachen University, Aachen, Germany
| | - Philip Kam-Tao Li
- Division of Nephrology, Prince of Wales Hospital, Chinese University of Hong Kong, Shatin, Hong Kong;
| | - Vlado Perkovic
- George Institute for Global Health, University of New South Wales, Sydney, Australia; and
| | - Edward F Vonesh
- Department of Preventive Medicine, Division of Biostatistics, Northwestern University, Chicago, Illinois
| | - Tom Greene
- Division of Epidemiology, Department of Internal Medicine, University of Utah, Salt Lake City, Utah
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