Progressive myoclonus epilepsy with nephropathy C1q due to SCARB2/LIMP-2 deficiency: Clinical report of two siblings

Autor: M. Clara Sá-Miranda, Daniel Caiola, João Chaves, Andrea Balreira, José Lopes Lima, Idalina Beirão, Paulo Gaspar
Rok vydání: 2011
Předmět:
Zdroj: Seizure. 20:738-740
ISSN: 1059-1311
DOI: 10.1016/j.seizure.2011.06.018
Popis: Action myoclonus-renal failure syndrome (AMRF) is considered a rare form of progressive myoclonus epilepsy (PME) associated with renal failure. A mutation on the gene encoding the lysosomal integral membrane protein type 2-LIMP-2 (SCARB2), the receptor responsible for targeting glucocerebrosidase to the lysosomes, was recently described, allowing a better understanding of its etiopathogenesis.We describe clinically two sisters with AMRF that resulted from a mutation in the SCARB2 gene. The renal involvement was due to nephropathy C1q. When substrate-reduction therapy, to correct the possible glucocerebroside storage in the cells with glucocerebrosidase deficiency, was administered to one of the siblings, a significant improvement was observed. This report points out a rational for a therapeutical approach to this new lysossomopathy.
Databáze: OpenAIRE