Research Topics
Genomes and GenesSpecies | Lesley A StevensSummaryAffiliation: Tufts Medical Center Country: USA Publications
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Publications
Comparative performance of the CKD Epidemiology Collaboration (CKD-EPI) and the Modification of Diet in Renal Disease (MDRD) Study equations for estimating GFR levels above 60 mL/min/1.73 m2Lesley A Stevens
Tufts Medical Center, Boston, MA 02111, USA
Am J Kidney Dis 56:486-95. 2010..Here, performance of a more accurate GFR-estimating equation, the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation, is reported by level of GFR and clinical characteristics...
Evaluating the performance of equations for estimating glomerular filtration rateLesley A Stevens
Tufts University School of Medicine, Tufts Medical Center, 800 Washington Street, Box 391 Boston, MA 02111, USA
J Nephrol 21:797-807. 2008....
Factors other than glomerular filtration rate affect serum cystatin C levelsLesley A Stevens
Division of Nephrology, Clinical Care Research, Tufts Medical Center, Boston, Massachusetts 02111, USA
Kidney Int 75:652-60. 2009..Hence, we found that cystatin C is affected by factors other than GFR which should be considered when the GFR is estimated using serum levels of cystatin C...
Current status and future perspectives for CKD testingLesley A Stevens
Division of Nephrology, Tufts Medical Center, Boston, MA 02111, USA
Am J Kidney Dis 53:S17-26. 2009..Repeated testing for urine protein and interpretation of GFR estimates in the context of kidney damage and the clinical context of patient presentation can help overcome these limitations...
Comparison of drug dosing recommendations based on measured GFR and kidney function estimating equationsLesley A Stevens
Division of Nephrology, Tufts Medical Center, Boston, MA 02111, USA
Am J Kidney Dis 54:33-42. 2009....
Chronic kidney disease and end-stage renal disease in the elderly population: current prevalence, future projections, and clinical significanceLesley A Stevens
Tufts Medical Center, Tufts University School of Medicine, Boston, MA, USA
Adv Chronic Kidney Dis 17:293-301. 2010....
Evaluation of the Chronic Kidney Disease Epidemiology Collaboration equation for estimating the glomerular filtration rate in multiple ethnicitiesLesley A Stevens
Division of Nephrology, Tufts Medical Center, Boston, Massachusetts 02111, USA
Kidney Int 79:555-62. 2011..Thus, heterogeneity in performance among the ethnic and geographic groups precludes use of the four-level race equation. The CKD-EPI two-level race equation can be used in the United States and Europe across a wide range of ethnicity...
Development and validation of GFR-estimating equations using diabetes, transplant and weightLesley A Stevens
Tufts Medical Center, Boston, MA, USA
Nephrol Dial Transplant 25:449-57. 2010..Here, we describe the development and validation of this equation as well as other equations that incorporate diabetes, transplant and weight as additional predictor variables...
Measured GFR as a confirmatory test for estimated GFRLesley A Stevens
Tufts Medical Center, Boston, Massachusetts, USA
J Am Soc Nephrol 20:2305-13. 2009..We suggest plasma clearance of nonradioactive markers be more widely implemented in clinical settings. Further research is necessary on the impact of the use of measured GFR as a confirmatory test...
Impact of reporting estimated glomerular filtration rate: it's not just about usLesley A Stevens
Tufts Medical Center, Boston, Massachusetts 02111, USA
Kidney Int 76:245-7. 2009..In our view, a complete assessment requires a broader perspective. Most patients with CKD do not require referral to a nephrologist. Improving outcomes requires coordinated efforts of all physicians...
Prevalence of CKD and comorbid illness in elderly patients in the United States: results from the Kidney Early Evaluation Program (KEEP)Lesley A Stevens
Division of Nephrology, Tufts Medical Center, 800 Washington Street, Boston, MA 02111, USA
Am J Kidney Dis 55:S23-33. 2010..In all 3 data sources, we also explored comorbid conditions and CKD-related complications...
Advances in glomerular filtration rate-estimating equationsLesley A Stevens
Division of Nephrology, Tufts Medical Center, Boston, Massachusetts 02111, USA
Curr Opin Nephrol Hypertens 19:298-307. 2010..Here, we review the performance of current creatinine and cystatin C-based estimating equations as well as demonstration of their utility in public health and clinical practice...
Comparison of the CKD Epidemiology Collaboration (CKD-EPI) and Modification of Diet in Renal Disease (MDRD) study equations: risk factors for and complications of CKD and mortality in the Kidney Early Evaluation Program (KEEP)Lesley A Stevens
Division of Nephrology, Tufts Medical Center, Boston, MA 02111, USA
Am J Kidney Dis 57:S9-16. 2011..Before implementing this change in the Kidney Early Evaluation Program (KEEP), we compared characteristics of reclassified individuals and mortality risk predictions using the new equation...
A predictive model for progression of chronic kidney disease to kidney failureNavdeep Tangri
Department of Medicine, Tufts Medical Center, 800 Washington St, PO Box 391, Boston, MA 02111, USA
JAMA 305:1553-9. 2011....
Estimating GFR using serum cystatin C alone and in combination with serum creatinine: a pooled analysis of 3,418 individuals with CKDLesley A Stevens
Division of Nephrology, Tufts New England Medical Center, 750 Washington St, Box 391, Boston, MA 02111, USA
Am J Kidney Dis 51:395-406. 2008..We report the development and evaluation of GFR-estimating equations using serum cystatin C alone and serum cystatin C, serum creatinine, or both with demographic variables...
Impact of creatinine calibration on performance of GFR estimating equations in a pooled individual patient databaseLesley A Stevens
Division of Nephrology, Tufts New England Medical Center, 750 Washington St, Box 391, Boston, MA 02111, USA
Am J Kidney Dis 50:21-35. 2007..Variation in performance of glomerular filtration rate (GFR) estimating equations is related to variation in calibration of the creatinine assay across clinical laboratories...
A new equation to estimate glomerular filtration rateAndrew S Levey
Tufts Medical Center, Boston, Massachusetts 02111, USA
Ann Intern Med 150:604-12. 2009..Equations to estimate glomerular filtration rate (GFR) are routinely used to assess kidney function. Current equations have limited precision and systematically underestimate measured GFR at higher values...
Evaluation of the modification of diet in renal disease study equation in a large diverse populationLesley A Stevens
Division of Nephrology, Tufts New England Medical Center, 750 Washington Street, Box 391, Boston, MA 02111, USA
J Am Soc Nephrol 18:2749-57. 2007..73 m(2). In individual patients, interpretation of GFR estimates near 60 ml/min per 1.73 m(2) should be interpreted with caution to avoid misclassification of chronic kidney disease in the context of the clinical setting...
Prevalence of ICD-9-CM codes for chronic kidney disease in individuals with cardiovascular disease risk factorsAshish Mahajan
Tufts Medical Center Scientific and Clinical Research Center, Boston, Massachusetts, USA
J Nephrol 22:523-33. 2009..Chronic kidney disease (CKD) is a risk factor for cardiovascular disease (CVD)...
Expressing the Modification of Diet in Renal Disease Study equation for estimating glomerular filtration rate with standardized serum creatinine valuesAndrew S Levey
Division of Nephrology, Tufts New England Medical Center, Boston, MA 02111, USA
Clin Chem 53:766-72. 2007..We sought to reexpress the 4-variable Modification of Diet in Renal Disease (MDRD) Study equation for estimation of glomerular filtration rate (GFR) using serum creatinine (S(cr)) standardized to reference methods...
Standardization of serum creatinine and estimated GFR in the Kidney Early Evaluation Program (KEEP)Lesley A Stevens
Division of Nephrology, Tufts New England Medical Center, 750 Washington St, Box 391, Boston, MA 02111, USA
Am J Kidney Dis 51:S77-82. 2008..We describe the calibration of creatinine assays used in the National Kidney Foundation Kidney Early Evaluation Program (KEEP)...
Comparison of CKD awareness in a screening population using the Modification of Diet in Renal Disease (MDRD) study and CKD Epidemiology Collaboration (CKD-EPI) equationsManjula Kurella Tamura
Department of Medicine, Division of Nephrology, Stanford University, Palo Alto, CA 94304, USA
Am J Kidney Dis 57:S17-23. 2011..Whether reclassification of CKD severity using the CKD Epidemiology Collaboration (CKD-EPI) equation to estimate glomerular filtration rate (GFR) modifies estimates of CKD awareness is unknown...
Assessing kidney function--measured and estimated glomerular filtration rateLesley A Stevens
Division of Nephrology, Tufts-New England Medical Center, Boston, MA 02111, USA
N Engl J Med 354:2473-83. 2006
Changes in dietary protein intake has no effect on serum cystatin C levels independent of the glomerular filtration rateNavdeep Tangri
Division of Nephrology, Department of Medicine, Tufts Medical Center, Boston, Massachusetts 02111, USA
Kidney Int 79:471-7. 2011..Hence, cystatin C may allow more accurate estimates of GFR than creatinine for patients with reduced protein intake. Further study of other non-GFR determinants of cystatin C is needed before the widespread adoption...
Using standardized serum creatinine values in the modification of diet in renal disease study equation for estimating glomerular filtration rateAndrew S Levey
Tufts-New England Medical Center, Boston, Massachusetts 02111, USA
Ann Intern Med 145:247-54. 2006..73 m2. By using the reexpressed MDRD Study equation with the standardized serum creatinine assay, clinical laboratories can report more accurate GFR estimates...
Low rates of testing and diagnostic codes usage in a commercial clinical laboratory: evidence for lack of physician awareness of chronic kidney diseaseLesley A Stevens
Tufts New England Medical Center, 750 Washington Street, Box 391, Boston, MA 02111, USA
J Am Soc Nephrol 16:2439-48. 2005....
Early change in proteinuria as a surrogate outcome in kidney disease progression: a systematic review of previous analyses and creation of a patient-level pooled datasetNicholas Stoycheff
Tufts Medical Center, Boston, MA, USA
Nephrol Dial Transplant 26:848-57. 2011..There is a reasonably sound biological basis for this hypothesis, but only preliminary empirical evidence currently exists...
Cystatin C and creatinine in an HIV cohort: the nutrition for healthy living studyClara Y Jones
Tufts University School of Medicine, Boston, MA 02111, USA
Am J Kidney Dis 51:914-24. 2008..Serum creatinine level may underestimate the prevalence of CKD in subjects with decreased lean body mass or liver disease. Level of serum cystatin C, an alternative kidney function marker, is independent of lean body mass...
Risk factors for proteinuria in HIV-infected and -uninfected Hispanic drug usersMartin S Rhee
Department of Medicine, Division of Geographic Medicine and Infectious Diseases, Tufts Medical Center, Boston, MA 02111, USA
Am J Kidney Dis 52:683-90. 2008..Minorities are at greater risk of chronic kidney disease. Data are limited about risk factors for proteinuria in Hispanic drug users with and without HIV infection...
Surrogate end points for clinical trials of kidney disease progressionLesley A Stevens
Division of Nephrology, Tufts-New England Medical Center, 750 Washington Street, Box 391, Boston, MA 02111, USA
Clin J Am Soc Nephrol 1:874-84. 2006
Variation in the serum creatinine assay calibration: a practical application to glomerular filtration rate estimationKalyani Murthy
Division of Nephrology, Tufts New England Medical Center, Boston, Massachusetts, USA
Kidney Int 68:1884-7. 2005..Variation among clinical laboratories in calibration of serum creatinine assays is a source of error in glomerular filtration rate (GFR) estimation equations. We evaluated impact of this variation on GFR estimates...
Chronic kidney disease, diabetes, and hypertension: what's in a name?Andrew S Levey
Division of Nephrology, Tufts New England Medical Center, Boston, Massachusetts 02111, USA
Kidney Int 78:19-22. 2010..We provide data on the frequency of diabetes, hypertension, or both, according to albumin-to-creatinine ratio and eGFR, and review the rationale for retaining the current name...
Conceptual model of CKD: applications and implicationsAndrew S Levey
Division of Nephrology, Tufts Medical Center, Boston, MA 02111, USA
Am J Kidney Dis 53:S4-16. 2009....
Automatic reporting of estimated glomerular filtration rate--just what the doctor orderedAndrew S Levey
Division of Nephrology, Department of Medicine, Tufts-New England Medical Center, Boston, MA 02111, USA
Clin Chem 52:2188-93. 2006
Serum cystatin C as a marker of glomerular filtration rateMagdalena Madero
Division of Nephrology, Tufts-New England Medical Center, Boston, Massachusetts, USA
Curr Opin Nephrol Hypertens 15:610-6. 2006..SUMMARY: Cystatin C shows promise as an alternative to serum creatinine but several important questions remain before it can be recommended for use in clinical practice...
Nephrotic syndrome in diabetic kidney disease: an evaluation and update of the definitionNicholas Stoycheff
Division of Nephrology, Tufts Medical Center, Boston, MA 02111, USA
Am J Kidney Dis 54:840-9. 2009..These threshold levels have not been rigorously evaluated in patients with diabetic kidney disease or by using urine albumin excretion, the preferred measure of proteinuria in patients with diabetes...
Toward optimal health: Lesley A. Stevens, M.D. discusses issues of chronic kidney disease in women. Interview by Jodi R. GodfreyLesley A Stevens
Tufts University School of Medicine, Boston, Massachusetts, USA
J Womens Health (Larchmt) 15:123-6. 2006
Measurement of kidney functionLesley A Stevens
Division of Nephrology, Tufts University School of Medicine, Tufts New England Medical Center, 750 Washington Street, Box 391, Boston, MA 02111, USA
Med Clin North Am 89:457-73. 2005..The current recommended method is to use estimating equations based on serum creatinine and which incorporate demographic and clinical variables...
Prevalence of and risk factors for chronic kidney disease in rural NicaraguaJulie K O'Donnell
ASPH CDC Allan Rosenfield Global Health Fellowship Program, Washington, DC, USA
Nephrol Dial Transplant 26:2798-805. 2011..The true prevalence, nature and aetiology of kidney disease in this region remain unknown...
Calcium, phosphate, and parathyroid hormone levels in combination and as a function of dialysis duration predict mortality: evidence for the complexity of the association between mineral metabolism and outcomesLesley A Stevens
Division of Nephrology, New England Medical Centre, Boston, Massachusetts, USA
J Am Soc Nephrol 15:770-9. 2004..In so doing, the complex interaction of time and MM can begin to be understand. Further exploration is required...
