Rationale and population-based prospective cohort protocol for the disadvantaged populations at risk of decline in eGFR (CO-DEGREE)

Introduction A recently recognised form of chronic kidney disease (CKD) of unknown origin (CKDu) is afflicting communities, mostly in rural areas in several regions of the world. Prevalence studies are being conducted in a number of countries, using a standardised protocol, to estimate the distribut...

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Main Authors: Antonio Bernabe-Ortiz, Neil Pearce, Hans Kromhout, Pablo Perel, Liam Smeeth, Cristina O’Callaghan-Gordo, Jason Glaser, Kristina Jakobsson, Dorothea Nitsch, Ben Caplin, Nalika Gunawardena, Adeera Levin, Vidhya Venugopal, Marvin Gonzalez-Quiroz, Sophie Hamilton, Cristina O'Callaghan Gordo, Rajiv Saran, Ricardo Correa-Rotter, Ajay Singh, Giuseppe Remuzzi, Emmanuel Burdmann, Rick Johnson, Phabdheep Kaur, Pronpimolk Kongtip, Magdalena Madero Rovalo, Moffat Nyirenda, Dorairaj Prabhkaran, Narayan Prasad, Nalika Gunawardenan
Format: Article
Language:English
Published: BMJ Publishing Group 2019-09-01
Series:BMJ Open
Online Access:https://bmjopen.bmj.com/content/9/9/e031169.full
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author Antonio Bernabe-Ortiz
Neil Pearce
Hans Kromhout
Pablo Perel
Liam Smeeth
Cristina O’Callaghan-Gordo
Jason Glaser
Kristina Jakobsson
Dorothea Nitsch
Ben Caplin
Nalika Gunawardena
Adeera Levin
Vidhya Venugopal
Marvin Gonzalez-Quiroz
Sophie Hamilton
Cristina O'Callaghan Gordo
Rajiv Saran
Ricardo Correa-Rotter
Ajay Singh
Giuseppe Remuzzi
Emmanuel Burdmann
Rick Johnson
Phabdheep Kaur
Pronpimolk Kongtip
Magdalena Madero Rovalo
Moffat Nyirenda
Dorairaj Prabhkaran
Narayan Prasad
Nalika Gunawardenan
author_facet Antonio Bernabe-Ortiz
Neil Pearce
Hans Kromhout
Pablo Perel
Liam Smeeth
Cristina O’Callaghan-Gordo
Jason Glaser
Kristina Jakobsson
Dorothea Nitsch
Ben Caplin
Nalika Gunawardena
Adeera Levin
Vidhya Venugopal
Marvin Gonzalez-Quiroz
Sophie Hamilton
Cristina O'Callaghan Gordo
Rajiv Saran
Ricardo Correa-Rotter
Ajay Singh
Giuseppe Remuzzi
Emmanuel Burdmann
Rick Johnson
Phabdheep Kaur
Pronpimolk Kongtip
Magdalena Madero Rovalo
Moffat Nyirenda
Dorairaj Prabhkaran
Narayan Prasad
Nalika Gunawardenan
author_sort Antonio Bernabe-Ortiz
collection DOAJ
description Introduction A recently recognised form of chronic kidney disease (CKD) of unknown origin (CKDu) is afflicting communities, mostly in rural areas in several regions of the world. Prevalence studies are being conducted in a number of countries, using a standardised protocol, to estimate the distribution of estimated glomerular filtration rate (eGFR), and thus identify communities with a high prevalence of reduced glomerular filtration rate (GFR). In this paper, we propose a standardised minimum protocol for cohort studies in high-risk communities aimed at investigating the incidence of, and risk factors for, early kidney dysfunction.Methods and analysis This generic cohort protocol provides the information to establish a prospective population-based cohort study in low-income settings with a high prevalence of CKDu. This involves a baseline survey that included key elements from the DEGREE survey (eg, using the previously published DEGREE methodology) of a population-representative sample, and subsequent follow-up visits in young adults (without a pre-existing diagnosis of CKD (eGFR<60 mL/min/1.73m2), proteinuria or risk factors for CKD at baseline) over several years. Each visit involves a core questionnaire, and collection and storage of biological samples. Local capacity to measure serum creatinine will be required so that immediate feedback on kidney function can be provided to participants. After completion of follow-up, repeat measures of creatinine should be conducted in a central laboratory, using reference standards traceable to isotope dilution mass spectrometry (IDMS) quality control material to quantify the main outcome of eGFR decline over time, alongside a description of the early evolution of disease and risk factors for eGFR decline.Ethics and dissemination Ethical approval will be obtained by local researchers, and participants will provide informed consent before the study commences. Participants will typically receive feedback and advice on their laboratory results, and referral to a local health system where appropriate.
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spelling doaj-art-331c27b313c746f3a8aef605ad7e11f52024-11-28T01:00:10ZengBMJ Publishing GroupBMJ Open2044-60552019-09-019910.1136/bmjopen-2019-031169Rationale and population-based prospective cohort protocol for the disadvantaged populations at risk of decline in eGFR (CO-DEGREE)Antonio Bernabe-Ortiz0Neil Pearce1Hans Kromhout2Pablo Perel3Liam Smeeth4Cristina O’Callaghan-GordoJason Glaser5Kristina Jakobsson6Dorothea Nitsch7Ben Caplin8Nalika Gunawardena9Adeera Levin10Vidhya Venugopal11Marvin Gonzalez-Quiroz12Sophie Hamilton13Cristina O'Callaghan Gordo14Rajiv Saran15Ricardo Correa-Rotter16Ajay Singh17Giuseppe Remuzzi18Emmanuel BurdmannRick JohnsonPhabdheep KaurPronpimolk KongtipMagdalena Madero RovaloMoffat Nyirenda19Dorairaj PrabhkaranNarayan PrasadNalika GunawardenanCRONICAS Centre of Excellence in Chronic Diseases, Universidad Peruana Cayetano Heredia, Lima, PeruMedical Statistics, London School of Hygiene and Tropical Medicine, London, UK1 Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlandsprofessor of non-communicable disease epidemiologyprofessorLa Isla Network, Washington, DC, USAOccupational and Environmental Medicine, Sahlgrenska University Hospital, Region Västra Götaland, Gothenburg, SwedenLondon School of Hygiene & Tropical Medicine Faculty of Epidemiology and Public Health, London, UK2University College London (UCL), Department of Renal Medicine, Royal Free Hospital, London, UK15 World Health Organization Country Office, Colombo, Sri LankaprofessorDepartment of Environmental Health and Engineering, Sri Ramachandra Institute of Higher Education and Research, Chennai, India2University College London, UK4 School of Public Health, Faculty of Medicine, Imperial College London, London, UK5 Campus Mar, Instituto de Salud Global Barcelona, Barcelona, SpainDepartment of Internal Medicine, Division of Nephrology, University of Michigan, Ann Arbor, Michigan, USA11 Department of Nephrology and Mineral Metabolism, National Medical Science and Nutrition Institute Salvador Zubirán, Mexico City, Mexico5 Brigham and Women`s Hospital, Harvard Medical School, Boston, Massachusetts, USAIstituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, ItalyMRC/UVRI/LSHTM Uganda Research Unit, Medical Research Council Uganda, Entebbe, UgandaIntroduction A recently recognised form of chronic kidney disease (CKD) of unknown origin (CKDu) is afflicting communities, mostly in rural areas in several regions of the world. Prevalence studies are being conducted in a number of countries, using a standardised protocol, to estimate the distribution of estimated glomerular filtration rate (eGFR), and thus identify communities with a high prevalence of reduced glomerular filtration rate (GFR). In this paper, we propose a standardised minimum protocol for cohort studies in high-risk communities aimed at investigating the incidence of, and risk factors for, early kidney dysfunction.Methods and analysis This generic cohort protocol provides the information to establish a prospective population-based cohort study in low-income settings with a high prevalence of CKDu. This involves a baseline survey that included key elements from the DEGREE survey (eg, using the previously published DEGREE methodology) of a population-representative sample, and subsequent follow-up visits in young adults (without a pre-existing diagnosis of CKD (eGFR<60 mL/min/1.73m2), proteinuria or risk factors for CKD at baseline) over several years. Each visit involves a core questionnaire, and collection and storage of biological samples. Local capacity to measure serum creatinine will be required so that immediate feedback on kidney function can be provided to participants. After completion of follow-up, repeat measures of creatinine should be conducted in a central laboratory, using reference standards traceable to isotope dilution mass spectrometry (IDMS) quality control material to quantify the main outcome of eGFR decline over time, alongside a description of the early evolution of disease and risk factors for eGFR decline.Ethics and dissemination Ethical approval will be obtained by local researchers, and participants will provide informed consent before the study commences. Participants will typically receive feedback and advice on their laboratory results, and referral to a local health system where appropriate.https://bmjopen.bmj.com/content/9/9/e031169.full
spellingShingle Antonio Bernabe-Ortiz
Neil Pearce
Hans Kromhout
Pablo Perel
Liam Smeeth
Cristina O’Callaghan-Gordo
Jason Glaser
Kristina Jakobsson
Dorothea Nitsch
Ben Caplin
Nalika Gunawardena
Adeera Levin
Vidhya Venugopal
Marvin Gonzalez-Quiroz
Sophie Hamilton
Cristina O'Callaghan Gordo
Rajiv Saran
Ricardo Correa-Rotter
Ajay Singh
Giuseppe Remuzzi
Emmanuel Burdmann
Rick Johnson
Phabdheep Kaur
Pronpimolk Kongtip
Magdalena Madero Rovalo
Moffat Nyirenda
Dorairaj Prabhkaran
Narayan Prasad
Nalika Gunawardenan
Rationale and population-based prospective cohort protocol for the disadvantaged populations at risk of decline in eGFR (CO-DEGREE)
BMJ Open
title Rationale and population-based prospective cohort protocol for the disadvantaged populations at risk of decline in eGFR (CO-DEGREE)
title_full Rationale and population-based prospective cohort protocol for the disadvantaged populations at risk of decline in eGFR (CO-DEGREE)
title_fullStr Rationale and population-based prospective cohort protocol for the disadvantaged populations at risk of decline in eGFR (CO-DEGREE)
title_full_unstemmed Rationale and population-based prospective cohort protocol for the disadvantaged populations at risk of decline in eGFR (CO-DEGREE)
title_short Rationale and population-based prospective cohort protocol for the disadvantaged populations at risk of decline in eGFR (CO-DEGREE)
title_sort rationale and population based prospective cohort protocol for the disadvantaged populations at risk of decline in egfr co degree
url https://bmjopen.bmj.com/content/9/9/e031169.full
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