ArticleJournal of nephrology2021
Outcome of patients with severe AL amyloidosis and biopsy-proven renal involvement ineligible for bone marrow transplantation.
Article in Journal of nephrology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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13 authors at 1 institution in 1 country.
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Abstract
introductionAL amyloidosis is caused by a clone of plasma cell. Due to the impact of the disease on patient survival, careful evaluation of organ involvement is essential and treatment should be tailored to single patient's risk.
aimWe analyzed the clinical, laboratory and histological characteristics of 21 elderly patients (pts) (mean age 74.7 ± 7.97 years, range 55-81) with AL amyloidosis, including 17 patients (81%) with biopsy-proven renal involvement, who were ineligible for bone marrow transplantation, and evaluated the impact of renal impairment on survival.
resultsCardiac and renal involvement was found in 14 (67%) cases. Among the 17 patients with renal involvement, 12 had renal failure with proteinuria, and one showed isolated renal failure and vascular amyloid deposition. Hematological response occurred in 57.1% after first line therapy (75% after three cycles). In six of the patients with renal involvement, proteinuria decreased from 4.2 to 1.1 g/24 h (range 0.2-3 g/24 h), serum Creatinina (sCr) levels declined or stabilized. Severe renal failure at diagnosis was found to directly influence patient survival, while the Staging System for Renal Outcome in AL Amyloidosis did not associate with outcomes.
conclusionsTo the best of our knowledge this is the first case series in which the whole cohort of patients with urinary or functional abnormalities underwent a histological evaluation. None of the patients were eligible for bone marrow transplantation. Hematologic response was 57.1%, while renal response was much lower (35%). Of note, the Staging System did not completely apply to this peculiar setting of patients in whom renal involvement was not presumptive but biopsy-proven. More aggressive approaches may be needed in these patients to avoid the inexorable progression of the disease.
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