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  • Title: Oral small molecule therapy for lysosomal storage diseases.
    Author: Weinreb NJ.
    Journal: Pediatr Endocrinol Rev; 2013 Nov; 11 Suppl 1():77-90. PubMed ID: 24380126.
    Abstract:
    For more than 20 years, "enzyme replacement therapy" (ERT) has been the prevalent treatment approach for lysosomal storage disorders (LSDs). Unfortunately, ERT, as currently administered, is ineffective for primary neuronopathic LSDs. For LSDs whose major disease burden is non-neurological, ERT efficacy is limited by uneven tissue distribution and penetration, immunological intolerance, and disturbed intracellular homeostasis associated with persistent mutant enzymes that are not "replaced" by ERT. Many of these limitations might be circumvented by oral, low molecular weight pharmaceuticals that address relevant LSD pathophysiology and distribute widely in steady state concentrations in all cells and body tissues including the CNS. Two oral small molecule drugs (miglustat and cysteamine) are currently approved for clinical use and two (eliglustat and migalastat) are in advanced stage clinical trials. Several others are in early stages of clinical or pre-clinical investigation. This article reviews current knowledge of small molecule treatment for LSDs including approaches such as substrate synthesis inhibition, pharmacological chaperones, and proteostasis modification.
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