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Neurologie 12. Juli 2017

Pharmacological therapies for Angelman syndrome

Summary


Angelman syndrome (AS) is a severe neurodevelopmental disorder caused by a loss of the maternally inherited UBE3A; the paternal UBE3A is silenced in neurons by a mechanism involving an antisense transcript (UBE3A-AS). We reviewed the published information on clinical trials that have been completed as well as the publicly available information on ongoing trials of therapies for AS. Attempts at hypermethylating the maternal locus through dietary compounds were ineffective. The results of a clinical trial using minocycline as a matrix metalloproteinase-9 inhibitor were inconclusive; another clinical trial is underway. Findings from a clinical trial using L-dopa to alter phosphorylation of calcium/calmodulin-dependent kinase II are awaited. Topoisomerase inhibitors and antisense oligonucleotides are being developed to directly inhibit UBE3A-AS. Other strategies targeting specific pathways are briefly discussed. We also reviewed the medications that are currently used to treat seizures and sleep disturbances, which are two of the more debilitating manifestations of AS.

Wen-Hann Tan, MD Lynne M. Bird, Wiener Medizinische Wochenschrift 9/10/2017

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