Intractable Seizures Halted With Experimental Treatment for Rare Pediatric 'Pretzel Syndrome'
[Source: Science Daily]
With a better understanding of underlying mechanisms that cause a rare neurodevelopmental disorder in the Old Order Mennonite population, referred to as Pretzel syndrome, a new study reports that five children were successfully treated with a drug that modifies the disease process, minimizing seizures and improving receptive language.
The study, by researchers including experts from the Perelman School of Medicine at the University of Pennsylvania, appears in the journal Science Translational Medicine.
The disease — PSME or polyhydramnios, megalencephaly, and symptomatic epilepsy syndrome, commonly called Pretzel syndrome — is caused by a double-deletion of a specific gene that encodes for STRADA. About 4 percent of Old Order Mennonite individuals in Ohio, Pennsylvania and New York have a single copy of the deleted gene. When a double-deletion occurs, the loss of STRADA causes an activation of mTORC1 and, subsequently, the kinase p70S6K. This causes intractable seizures and results in limited cognitive development and language function, leaving PSME patients wheelchair-bound, mute and completely dependent.
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