ArticleBMC nephrology2025
Epidemiology and clinical presentation of kidney amyloidosis have changed over the past three decades: a nationwide population-based study.
Article in BMC nephrology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Treatment with CFTR modulators and subsequent remission of AA amyloidosis.Clinical kidney journal · 2026Article
- Histopathological improvement in kidney AL amyloid deposits following daratumumab-based chemotherapy and autologous peripheral blood stem cell transplantation: a case report.CEN case reports · 2026Article
- [An unusual cause for kidney transplantation].Innere Medizin (Heidelberg, Germany) · 2026Article
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11 authors.
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Abstract
backgroundEarly diagnosis of kidney amyloidosis is essential for optimal treatment and improved outcomes. This large, nationwide cohort spanning three decades, explores the changing epidemiology and clinical presentation of kidney amyloidosis in Norway, aiming to raise amyloid awareness.
methodsIn the 30-year period (1988-2017), we identified 479 patients with biopsy-confirmed kidney amyloidosis from national registries. Past medical records were reviewed for additional amyloid relevant data and cases were divided into groups of non-AA and AA amyloidosis.
resultsOverall amyloid biopsy incidence in the registries was stable around 4%, but a shift in types occurred. The AL-dominated non-AA group increased from 1.9% to 2.8% (p = 0.014) while the AA group decreased from 2.6% to 1.3% (p < 0.001). The change in AA was related to less rheumatic disease, partly compensated by an increase in AA in people who inject drugs. The scope and accuracy of amyloid typing improved in the study period, significantly reducing undetermined cases (p < 0.001) and providing more robust diagnoses. Clinical presentation was diverse, but proteinuria was present in 94%. Non-AA patients more often than AA had nephrotic syndrome (70% vs 51%, p < 0.001) and better-preserved kidney-function (median (IQR) eGFR 53(55) vs 27(34) ml/min/1.73 m
conclusionThe epidemiology of kidney amyloidosis has changed over the past 30 years. Biopsy incidence of non-AA is increased, and findings may suggest an earlier diagnosis. Amyloid typing has improved over time and is reflected in more precise amyloid diagnoses and reduced number of undetermined cases in recent years. Although AA related to rheumatic disease is declining, AA amyloidosis in people who inject drugs represents a growing challenge. The changing epidemiology of kidney amyloidosis may impact clinical presentation and future healthcare needs, emphasising the need for amyloid awareness.
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