1
|
Avarappattu J, Gaspert A, Spartà G, Rohrbach M. Impact of kidney biopsy on deciding when to initiate enzyme replacement therapy in children with Fabry disease. Pediatr Nephrol 2024; 39:131-140. [PMID: 37470867 PMCID: PMC10673963 DOI: 10.1007/s00467-023-06050-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 05/19/2023] [Accepted: 06/04/2023] [Indexed: 07/21/2023]
Abstract
BACKGROUND Recommendations on when to start enzyme replacement therapy (ERT) in children with Fabry disease (FD) differ between guidelines. In this study, kidney biopsies of a cohort of 14 untreated children and one treated child were analyzed for their morphologic changes to determine whether early initiation of ERT is indicated. METHODS All pediatric FD patients (< 18 years old) diagnosed between 2003 and 2021 in our department who received a kidney biopsy were enrolled. Clinical symptoms; laboratory parameters regarding kidney function, such as eGFR, plasma urea, protein-creatinine, and albumin/creatinine ratio; and 14 kidney biopsies prior to ERT and one under treatment were retrospectively analyzed. RESULTS A total of 14 patients were enrolled, including 9 male and 5 female children, aged 3-18 years (median age 11). Seven of the enrolled children were 10 years old or younger. Histological analysis of kidney biopsy samples revealed severe vacuolization and accumulation of inclusions in podocytes and renal tubules. The majority of cases had no FD-specific clinical or laboratory features independent of age, gender, or genotype. The youngest FD patient presenting with isolated abnormal kidney biopsy was 3 years old. CONCLUSIONS We demonstrate that histological lesions, typical for FD, can be observed in kidney biopsies at a very young age in patients without classical clinical symptoms or laboratory abnormalities. Thus, we recommend kidney biopsies as a possible tool for early diagnosis of renal involvement in FD. As a consequence of these early biopsy findings without a clinical correlate, an early initiation of ERT should be considered. A higher resolution version of the Graphical abstract is available as Supplementary information.
Collapse
Affiliation(s)
- Jenny Avarappattu
- Department of Metabolic Medicine and Department of Nephrology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Ariana Gaspert
- Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Giuseppina Spartà
- Department of Metabolic Medicine and Department of Nephrology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Marianne Rohrbach
- Department of Metabolic Medicine and Department of Nephrology, University Children's Hospital Zurich, Zurich, Switzerland.
| |
Collapse
|
2
|
Monte MA, Veroux M, Rodolico MS, Losi V, Di Pino L, Bella R, Lanza G, Monte IP. Fabry's Disease: The Utility of a Multidisciplinary Screening Approach. Life (Basel) 2022; 12:life12050623. [PMID: 35629291 PMCID: PMC9146284 DOI: 10.3390/life12050623] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 04/10/2022] [Accepted: 04/20/2022] [Indexed: 02/07/2023] Open
Abstract
(1) Background: As a lysosomal storage disorder, Fabry’s disease (FD) shows variable clinical manifestations. We applied our multidisciplinary approach to identify any organ damage in a sample of adult patients with different pathogenic variants. (2) Methods: 49 participants (mean age 44.3 ± 14.2 years; 37 females), underwent a multidimensional clinical and instrumental assessment. (3) Results: At diagnosis, mean enzymatic activity was 5.2 ± 4.6 nM/mL/h in females and 1.4 ± 0.5 nM/mL/h in males (normal values > 3.0), whereas globotriaosylsphingosine was 2.3 ± 2.1 nM/L in females and 28.7 ± 3.5 nM/L in males (normal values < 2.0). Overall, cardiovascular, neurological, and audiological systems were the most involved, regardless of the variant detected. Patients with classic variants (10) showed typical multiorgan involvement and, in some cases, prevalent organ damage (cardiovascular, neurological, renal, and ocular). Those with late-onset variants (39) exhibited lower occurrence of multiorgan impairment, although some of them affected the cardiovascular and neurological systems more. In patients with lower enzymatic activity, the most frequent involvement was neurological, followed by peripheral vascular disease. (4) Conclusions: FD patients exhibited wide phenotypic variability, even at single-organ level, likely due to the individual genetic mutation, although other factors may contribute. Compared to the conventional management, a multidisciplinary approach, as that prompted at our Center, allows one to achieve early clinical detection and management.
Collapse
Affiliation(s)
- Marco Angelo Monte
- Department of Surgery and Medical-Surgical Specialties, University of Catania, Via Santa Sofia 78, 95123 Catania, Italy; (M.A.M.); (V.L.); (L.D.P.); (G.L.)
| | - Massimiliano Veroux
- Department of Medical and Surgical Sciences and Advanced Technologies, University of Catania, Via Santa Sofia 78, 95123 Catania, Italy; (M.V.); (R.B.)
| | | | - Valentina Losi
- Department of Surgery and Medical-Surgical Specialties, University of Catania, Via Santa Sofia 78, 95123 Catania, Italy; (M.A.M.); (V.L.); (L.D.P.); (G.L.)
| | - Luigi Di Pino
- Department of Surgery and Medical-Surgical Specialties, University of Catania, Via Santa Sofia 78, 95123 Catania, Italy; (M.A.M.); (V.L.); (L.D.P.); (G.L.)
| | - Rita Bella
- Department of Medical and Surgical Sciences and Advanced Technologies, University of Catania, Via Santa Sofia 78, 95123 Catania, Italy; (M.V.); (R.B.)
| | - Giuseppe Lanza
- Department of Surgery and Medical-Surgical Specialties, University of Catania, Via Santa Sofia 78, 95123 Catania, Italy; (M.A.M.); (V.L.); (L.D.P.); (G.L.)
- Clinical Neurophysiology Research Unit, Oasi Research Institute-IRCCS, Via Conte Ruggero 73, 94018 Troina, Italy
| | - Ines Paola Monte
- Department of Surgery and Medical-Surgical Specialties, University of Catania, Via Santa Sofia 78, 95123 Catania, Italy; (M.A.M.); (V.L.); (L.D.P.); (G.L.)
- Correspondence:
| |
Collapse
|
3
|
Hughes DA, Aguiar P, Lidove O, Nicholls K, Nowak A, Thomas M, Torra R, Vujkovac B, West ML, Feriozzi S. Do clinical guidelines facilitate or impede drivers of treatment in Fabry disease? Orphanet J Rare Dis 2022; 17:42. [PMID: 35135579 PMCID: PMC8822651 DOI: 10.1186/s13023-022-02181-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 01/16/2022] [Indexed: 11/24/2022] Open
Abstract
Background Variable disease progression confounds accurate prognosis in Fabry disease. Evidence supports the long-term benefit of early intervention with disease-specific therapy, but current guidelines recommend treatment initiation based on signs that may present too late to avoid irreversible organ damage. Findings from the ‘PRoposing Early Disease Indicators for Clinical Tracking in Fabry Disease’ (PREDICT-FD) initiative included expert consensus on 27 early indicators of disease progression in Fabry disease and on drivers of and barriers to treatment initiation in Fabry disease. Here, we compared the PREDICT-FD indicators with guidance from the European Fabry Working Group and various national guidelines to identify differences in signs supporting treatment initiation and how guidelines themselves might affect initiation. Finally, anonymized patient histories were reviewed by PREDICT-FD experts to determine whether PREDICT-FD indicators supported earlier treatment than existing guidance. Results Current guidelines generally aligned with PREDICT-FD on indicators of renal involvement, but most lacked specificity regarding cardiac indicators. The prognostic significance of neurological indicators such as white matter lesions (excluded by PREDICT-FD) was questioned in some guidelines and excluded from most. Some PREDICT-FD patient-reported signs (e.g., febrile crises) did not feature elsewhere. Key drivers of treatment initiation in PREDICT-FD were: (A) male sex, young age, and clinical findings (e.g., severe pain, organ involvement), (B) improving clinical outcomes and preventing disease progression, and (C) a family history of Fabry disease (especially if outcomes were severe). All guidelines aligned with (A) and several advocated therapy for asymptomatic male patients. There was scant evidence of (B) in current guidance: for example, no countries mandated ancillary symptomatic therapy, and no guidance advocated familial screening with (C) when diagnosis was confirmed. Barriers were misdiagnosis and a lack of biomarkers to inform timing of treatment. Review of patient histories generally found equal or greater support for treatment initiation with PREDICT-FD indicators than with other guidelines and revealed that the same case and guideline criteria often yielded different treatment recommendations. Conclusions Wider adoption of PREDICT-FD indicators at a national level could promote earlier treatment in Fabry disease. Clearer, more concise guidance is needed to harmonize treatment initiation in Fabry disease internationally. Supplementary Information The online version contains supplementary material available at 10.1186/s13023-022-02181-4.
Collapse
Affiliation(s)
- Derralynn A Hughes
- Lysosomal Storage Disorders Unit, Institute of Immunity and Transplantation, Royal Free Hospital, Royal Free London NHS Foundation Trust, Rowland Hill Street, London, NW3 2PF, UK. .,Department of Haematology, University College London, London, UK.
| | - Patrício Aguiar
- Inborn Errors of Metabolism Reference Center, North Lisbon Hospital Center, Lisbon, Portugal.,Medicine Department, Faculty of Medicine, Lisbon University, Lisbon, Portugal
| | - Olivier Lidove
- Department of Internal Medicine-Rheumatology, Croix Saint Simon Hospital, Paris, France
| | - Kathleen Nicholls
- Department of Nephrology, Royal Melbourne Hospital, Parkville, VIC, Australia.,Department of Medicine, University of Melbourne - Parkville Campus, Parkville, VIC, Australia
| | - Albina Nowak
- Department of Endocrinology and Clinical Nutrition, University Hospital Zurich and University of Zurich, Zurich, Switzerland.,Department of Internal Medicine, Psychiatry University Hospital Zurich, Zurich, Switzerland
| | - Mark Thomas
- Department of Nephrology, Royal Perth Hospital, Perth, WA, Australia
| | - Roser Torra
- Inherited Renal Diseases Unit, Fundacio Puigvert, University Autónoma de Barcelona, Barcelona, Spain
| | - Bojan Vujkovac
- Department of Internal Medicine, General Hospital Slovenj Gradec, Slovenj Gradec, Slovenia
| | - Michael L West
- Department of Medicine, Dalhousie University, Halifax, NS, Canada
| | | |
Collapse
|
4
|
Ortiz A, Kanters S, Hamed A, DasMahapatra P, Poggio E, Maski M, Aguiar M, Ponce E, Jansen JP, Ayers D, Goldgrub R, Desnick RJ. Agalsidase beta treatment slows estimated glomerular filtration rate loss in classic Fabry disease patients: results from an individual patient data meta-analysis. Clin Kidney J 2020; 14:1136-1146. [PMID: 33841859 PMCID: PMC8023189 DOI: 10.1093/ckj/sfaa065] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 03/26/2020] [Indexed: 01/07/2023] Open
Abstract
Background Fabry disease is a rare, X-linked genetic disorder that, if untreated in patients with the Classic phenotype, often progresses to end-stage kidney disease. This meta-analysis determined the effect of agalsidase beta on loss of estimated glomerular filtration rate (eGFR) in the Classic phenotype using an expansive evidence base of individual patient-level data. Methods The evidence base included four Sanofi-Genzyme studies and six studies from a systematic literature review. These were restricted to Classic Fabry patients meeting the eligibility criteria from Phases III and IV agalsidase beta trials, including 315 patients (161 treated). Linear regression was first used to model annual change in eGFR for each patient and the resulting annualized eGFR slopes were modelled with treatment and covariates using quantile regression. These results were then used to estimate median annualized eGFR change in agalsidase beta treated versus untreated groups. Results Imbalances across treatment groups were found in baseline age, sex and proteinuria, but not in the use of renin–angiotensin system blockers. The adjusted model suggests that treated (agalsidase beta) patients experienced a slower median eGFR decrease [2.46 mL/min/1.73 m2/year slower; 95% confidence interval (CI) 0.63–4.29; P = 0.0087] than comparable untreated patients. The median eGFR decrease was 2.64 mL/min/1.73 m2/year slower (95% CI 0.53–4.78; P = 0.0141) in treated Classic males. Conclusions Using an expansive evidence base and robust modelling approach, these data indicate that agalsidase beta-treated patients with the Classic phenotype conserve their renal function better than untreated patients.
Collapse
Affiliation(s)
- Alberto Ortiz
- Unidad de Diálisis, IIS-Fundación Jiménez Díaz, School of Medicine, UAM, IRSIN and REDINREN, Madrid, Spain
| | - Steve Kanters
- Evidence Synthesis and Decision Modeling, Precision HEOR, Vancouver, BC, Canada
| | - Alaa Hamed
- Sanofi Genzyme Health Economics and Value Assessment, Genzyme, Cambridge, MA, USA
| | | | | | - Manish Maski
- Sanofi Genzyme Medical Affairs, Genzyme, Cambridge, MA, USA
| | - Mario Aguiar
- Sanofi Genzyme Medical Affairs, Genzyme, Cambridge, MA, USA
| | - Elvira Ponce
- Sanofi Genzyme Medical Affairs, Genzyme, Cambridge, MA, USA
| | - Jeroen P Jansen
- Evidence Synthesis and Decision Modeling, Precision HEOR, Oakland, CA, USA
| | - Dieter Ayers
- Evidence Synthesis and Decision Modeling, Precision HEOR, Vancouver, BC, Canada
| | - Rachel Goldgrub
- Evidence Synthesis and Decision Modeling, Precision HEOR, Vancouver, BC, Canada
| | - Robert J Desnick
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| |
Collapse
|
5
|
Germain DP, Elliott PM, Falissard B, Fomin VV, Hilz MJ, Jovanovic A, Kantola I, Linhart A, Mignani R, Namdar M, Nowak A, Oliveira JP, Pieroni M, Viana-Baptista M, Wanner C, Spada M. The effect of enzyme replacement therapy on clinical outcomes in male patients with Fabry disease: A systematic literature review by a European panel of experts. Mol Genet Metab Rep 2019; 19:100454. [PMID: 30775256 PMCID: PMC6365982 DOI: 10.1016/j.ymgmr.2019.100454] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 01/23/2019] [Indexed: 11/17/2022] Open
Abstract
Background Enzyme replacement therapy (ERT) with recombinant human α-galactosidase has been available for the treatment of Fabry disease since 2001 in Europe and 2003 in the USA. Treatment outcomes with ERT are dependent on baseline patient characteristics, and published data are derived from heterogeneous study populations. Methods We conducted a comprehensive systematic literature review of all original articles on ERT in the treatment of Fabry disease published up until January 2017. This article presents the findings in adult male patients. Results Clinical evidence for the efficacy of ERT in adult male patients was available from 166 publications including 36 clinical trial publications. ERT significantly decreases globotriaosylceramide levels in plasma, urine, and in different kidney, heart, and skin cell types, slows the decline in estimated glomerular filtration rate, and reduces/stabilizes left ventricular mass and cardiac wall thickness. ERT also improves nervous system, gastrointestinal, pain, and quality of life outcomes. Conclusions ERT is a disease-specific treatment for patients with Fabry disease that may provide clinical benefits on several outcomes and organ systems. Better outcomes may be observed when treatment is started at an early age prior to the development of organ damage such as chronic kidney disease or cardiac fibrosis. Consolidated evidence suggests a dose effect. Data described in male patients, together with female and paediatric data, informs clinical practice and therapeutic goals for individualized treatment.
Collapse
Key Words
- ACEi, angiotensin-converting enzyme inhibitor
- ANS, autonomic nervous system
- ARB, angiotensin receptor blocker
- BPI, Brief Pain Inventory
- CES-D, Center for Epidemiologic Studies Depression Scale
- CNS, central nervous system
- CR, case report
- CT, clinical trial
- ECG, electrocardiogram/electrocardiography
- EOW, every other week
- ERT, enzyme replacement therapy
- Fabry disease
- GFR, glomerular filtration rate
- GI, gastrointestinal
- GL-3, globotriaosylceramide
- IENFD, intra-epidermal nerve fibre density
- IVST, intraventricular septum thickness
- LPWT, left posterior wall thickness
- LVEDD, left ventricular end-diastolic diameter
- LVEF, left ventricular ejection fraction
- LVH, left ventricular hypertrophy
- LVM, left ventricular mass
- LVMi, left ventricular mass index
- LVWT, left ventricular wall thickness
- MG, mixed gender
- MRI, magnetic resonance imaging
- MWT, maximal wall thickness
- NYHA, New York Heart Association
- OS, observational study
- PNS, peripheral nervous system
- QoL, quality of life
- RCT, randomized controlled trial
- SF-36, 36-item Short Form Health Survey
- TIA, transient ischaemic attack
- WMH, white matter hyperintensities.
- adult male patients
- agalsidase alfa
- agalsidase beta
- eGFR, estimated glomerular filtration rate
- enzyme replacement therapy
- lyso-GL-3, globotriaosylsphingosine
- systematic literature review
Collapse
Affiliation(s)
- Dominique P. Germain
- French Referral Center for Fabry disease, Division of Medical Genetics and INSERM U1179, University of Versailles, Paris-Saclay University, Montigny, France
- Corresponding author.
| | - Perry M. Elliott
- University College London and Barts Heart Centre, London, United Kingdom
| | - Bruno Falissard
- INSERM U1018, University of Paris-Sud, University of Paris-Descartes, Paris, France
| | - Victor V. Fomin
- Department of Internal Diseases No.1, I.M. Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Max J. Hilz
- Department of Neurology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Ana Jovanovic
- Mark Holland Metabolic Unit, Salford Royal NHS Foundation Trust, Salford, United Kingdom
| | - Ilkka Kantola
- Division of Medicine, Turku University Hospital, University of Turku, Turku, Finland
| | - Aleš Linhart
- Second Department of Medicine – Department of Cardiovascular Medicine, 1st Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Renzo Mignani
- Department of Nephrology, Infermi Hospital, Rimini, Italy
| | - Mehdi Namdar
- Service de Cardiologie, Hôpitaux Universitaires de Genève, Geneva, Switzerland
| | - Albina Nowak
- Department of Internal Medicine, University Hospital of Zurich and University of Zurich, Zurich, Switzerland
| | - João-Paulo Oliveira
- Department of Genetics, São João Hospital Centre and Faculty of Medicine and “Instituto de Investigação e Inovação em Saúde (iS3)”, University of Porto, Porto, Portugal
| | | | - Miguel Viana-Baptista
- Serviço de Neurologia, Hospital Egas Moniz, Centro Hospitalar de Lisboa Ocidental; CEDOC Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Christoph Wanner
- Division of Nephrology, University Clinic, University of Würzburg, Würzburg, Germany
| | - Marco Spada
- Department of Paediatrics, University of Torino, Torino, Italy
| |
Collapse
|
6
|
Abstract
Anderson-Fabry disease (AFD) is a lysosomal storage disease caused by the inappropriate accumulation of globotriaosylceramide in tissues due to a deficiency in the enzyme α-galactosidase A (α-Gal A). Anderson-Fabry cardiomyopathy is characterized by structural, valvular, vascular and conduction abnormalities, and is now the most common cause of mortality in patients with AFD. Large-scale metabolic and genetic screening studies have revealed AFD to be prevalent in populations of diverse ethnic origins, and the variant form of AFD represents an unrecognized health burden. Anderson-Fabry disease is an X-linked disorder, and genetic testing is critical for the diagnosis of AFD in women. Echocardiography with strain imaging and cardiac magnetic resonance imaging using late enhancement and T1 mapping are important imaging tools. The current therapy for AFD is enzyme replacement therapy (ERT), which can reverse or prevent AFD progression, while gene therapy and the use of molecular chaperones represent promising novel therapies for AFD. Anderson-Fabry cardiomyopathy is an important and potentially reversible cause of heart failure that involves LVH, increased susceptibility to arrhythmias and valvular regurgitation. Genetic testing and cardiac MRI are important diagnostic tools, and AFD cardiomyopathy is treatable if ERT is introduced early.
Collapse
|
7
|
Beck M, Hughes D, Kampmann C, Larroque S, Mehta A, Pintos-Morell G, Ramaswami U, West M, Wijatyk A, Giugliani R. Long-term effectiveness of agalsidase alfa enzyme replacement in Fabry disease: A Fabry Outcome Survey analysis. Mol Genet Metab Rep 2015; 3:21-7. [PMID: 26937390 PMCID: PMC4750577 DOI: 10.1016/j.ymgmr.2015.02.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 02/12/2015] [Indexed: 02/05/2023] Open
Abstract
Outcomes from 5 years of treatment with agalsidase alfa enzyme replacement therapy (ERT) for Fabry disease in patients enrolled in the Fabry Outcome Survey (FOS) were compared with published findings for untreated patients with Fabry disease. Data were extracted from FOS, a Shire-sponsored database, for comparison with data from three published studies. Outcomes evaluated were the annualized rate of change in estimated glomerular filtration rate (eGFR) and left ventricular mass indexed to height (LVMI) as well as time to and ages at a composite morbidity endpoint and at death. FOS data were extracted for 740 treated patients who were followed for a median of ~ 5 years. Compared with no treatment, patients treated with agalsidase alfa demonstrated slower decline in renal function and slower progression of left ventricular hypertrophy. Treated male patients with baseline eGFR < 60 mL/min/1.73 m2 had a mean (standard error of the mean [SEM]) annualized change in eGFR of − 2.86 (0.53) mL/min/1.73 m2/y compared with − 6.8 (1.5) in the published untreated cohort. The mean (SEM) rate of LVMI increase with treatment was 0.33 (0.10) g/m2.7/y in males and 0.48 (0.09) in females, compared with 4.07 (1.03) in untreated males and 2.31 (0.81) in untreated females. Morbidity occurred later in treated patients, with ~ 16% risk of a composite morbidity event (26% in males) after 24 months with ERT versus ~ 45% without treatment, with first events and deaths also occurring at older ages in patients administered ERT (e.g., estimated median survival in treated males was 77.5 years versus 60 years in untreated males). Findings from these retrospective comparisons of observational data and published literature support the long-term benefits of ERT with agalsidase alfa for Fabry disease in slowing the progression of renal impairment and cardiomyopathy. Treatment also appeared to delay the onset of morbidity and mortality. Interpretation of these findings should take into account that they are based on retrospective comparisons with previously published data.
Collapse
Key Words
- ACEI, Angiotensin-converting enzyme inhibitor
- ARB, Angiotensin receptor blocker
- Agalsidase alfa
- CI, Confidence interval
- ERT, Enzyme replacement therapy
- Enzyme replacement therapy
- FOS, Fabry Outcome Survey
- Fabry disease
- LVH, Left ventricular hypertrophy
- LVMI, Left ventricular mass indexed to height
- Long-term effectiveness
- MDRD, Modification of Diet in Renal Disease
- SE, Standard error
- SEM, Standard error of the mean
- eGFR, Estimated glomerular filtration rate
Collapse
Affiliation(s)
- Michael Beck
- University Medical Center, University of Mainz, Department of Paediatrics, Mainz, Germany
| | - Derralynn Hughes
- Royal Free London NHS Foundation Trust, University College of London, UK
| | - Christoph Kampmann
- University Medical Center, University of Mainz, Department of Paediatrics, Mainz, Germany
| | | | - Atul Mehta
- Royal Free London NHS Foundation Trust, University College of London, UK
| | - Guillem Pintos-Morell
- Department of Pediatrics, University Hospital "Germans Trias i Pujol," Badalona, Universitat Autònoma de Barcelona, Spain
| | - Uma Ramaswami
- Royal Free London NHS Foundation Trust, University College of London, UK
| | - Michael West
- Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | | | - Roberto Giugliani
- Medical Genetics Service HCPA/Dep Genet UFRGS and INAGEMP, Porto Alegre, Brazil
| | | |
Collapse
|