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Kidney dysfunction during lenalidomide treatment for AL amyloidosis
Richard Specter1, Vaishali Sanchorawala, David C Seldin
1Renal Section, Boston University School of Medicine, Boston, MA, USA.
Lenalidomide treatment frequently causes kidney dysfunction in AL amyloidosis patients. Close monitoring of renal function is recommended during therapy.
Area of Science:
- Nephrology
- Hematology
- Pharmacology
Background:
- Lenalidomide is an immunomodulatory drug for plasma cell dyscrasias.
- Previous observations indicated significant kidney function decline in AL amyloidosis patients on lenalidomide.
- This study aims to detail kidney function changes in AL amyloidosis patients receiving lenalidomide.
Purpose of the Study:
- To characterize kidney function alterations in AL amyloidosis patients during lenalidomide treatment.
Main Methods:
- Secondary analysis of a clinical trial involving 41 AL amyloidosis patients treated with lenalidomide.
- Kidney dysfunction defined as >= 50% serum creatinine increase; severe dysfunction as >= 100% increase.
- Renal function recovery defined as serum creatinine returning to within 25% of baseline or dialysis discontinuation.
Main Results:
- 66% of patients (27/41) developed kidney dysfunction.
- Severe kidney dysfunction occurred in 32% (13/41), with 10% (4/41) requiring dialysis.
- Factors associated with severe dysfunction included older age, renal amyloidosis, higher proteinuria, and lower albumin.
Conclusions:
- Worsening kidney function is common in AL amyloidosis patients treated with lenalidomide.
- While causality is unproven, the findings highlight the need for vigilant kidney function monitoring.
- Close surveillance of renal function is advised for patients undergoing lenalidomide therapy.
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