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Sökning: WFRF:(Perkowska Ptasinska A)

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  • Coppo, Rosanna, et al. (författare)
  • Risk factors for progression in children and young adults with IgA nephropathy : an analysis of 261 cases from the VALIGA European cohort
  • 2017
  • Ingår i: Pediatric nephrology (Berlin, West). - 0931-041X .- 1432-198X. ; 32:1, s. 139-150
  • Tidskriftsartikel (refereegranskat)abstract
    • There is a need for early identification of children with immunoglobulin A nephropathy (IgAN) at risk of progression of kidney disease. Data on 261 young patients [age < 23 years; mean follow-up of 4.9 (range 2.5-8.1) years] enrolled in VALIGA, a study designed to validate the Oxford Classification of IgAN, were assessed. Renal biopsies were scored for the presence of mesangial hypercellularity (M1), endocapillary hypercellularity (E1), segmental glomerulosclerosis (S1), tubular atrophy/interstitial fibrosis (T1-2) (MEST score) and crescents (C1). Progression was assessed as end stage renal disease and/or a 50 % loss of estimated glomerular filtration rate (eGFR) (combined endpoint) as well as the rate of renal function decline (slope of eGFR). Cox regression and tree classification binary models were used and compared. In this cohort of 261 subjects aged < 23 years, Cox analysis validated the MEST M, S and T scores for predicting survival to the combined endpoint but failed to prove that these scores had predictive value in the sub-group of 174 children aged < 18 years. The regression tree classification indicated that patients with M1 were at risk of developing higher time-averaged proteinuria (p < 0.0001) and the combined endpoint (p < 0.001). An initial proteinuria of ae0.4 g/day/1.73 m(2) and an eGFR of < 90 ml/min/1.73 m(2) were determined to be risk factors in subjects with M0. Children aged < 16 years with M0 and well-preserved eGFR (> 90 ml/min/1.73 m(2)) at presentation had a significantly high probability of proteinuria remission during follow-up and a higher remission rate following treatment with corticosteroid and/or immunosuppressive therapy. This new statistical approach has identified clinical and histological risk factors associated with outcome in children and young adults with IgAN.
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  • Dendooven, Amélie, et al. (författare)
  • Coding practice in national and regional kidney biopsy registries
  • 2021
  • Ingår i: BMC Nephrology. - : BioMed Central (BMC). - 1471-2369. ; 22:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Kidney biopsy registries all over the world benefit research, teaching and health policy. Comparison, aggregation and exchange of data is however greatly dependent on how registration and coding of kidney biopsy diagnoses are performed. This paper gives an overview over kidney biopsy registries, explores how these registries code kidney disease and identifies needs for improvement of coding practice. Methods: A literature search was undertaken to identify biopsy registries for medical kidney diseases. These data were supplemented with information from personal contacts and from registry websites. A questionnaire was sent to all identified registries, investigating age of registries, scope, method of coding, possible mapping to international terminologies as well as self-reported problems and suggestions for improvement. Results: Sixteen regional or national kidney biopsy registries were identified, of which 11 were older than 10 years. Most registries were located either in Europe (10/16) or in Asia (4/16). Registries most often use a proprietary coding system (12/16). Only a few of these coding systems were mapped to SNOMED CT (1), older SNOMED versions (2) or ERA-EDTA PRD (3). Lack of maintenance and updates of the coding system was the most commonly reported problem. Conclusions: There were large gaps in the global coverage of kidney biopsy registries. Limited use of international coding systems among existing registries hampers interoperability and exchange of data. The study underlines that the use of a common and uniform coding system is necessary to fully realize the potential of kidney biopsy registries.
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  • Resultat 1-9 av 9

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