080210xf's Blog

L'X fragile sera vaincu | Fragile X will be conquered

One drug, two birds

Virginiahughes.com

It’s been a year of big advances in the fragile X community: researchers better understand the role of the protein missing in the syndrome, pharma giants Novartis and Roche are developing new drugs for the disorder, and in July, biotech Seaside Therapeutics announced that one of its compounds, STX209, improves social behaviors in children with the syndrome.

The excitement has bled into the autism field, too, because of the possibility that these drugs could treat both disorders. Now there’s some data to back up that optimism. Yesterday, Seaside announced results from a phase II clinical trial showing that, in children with autism, STX209 lowers agitation, tantrums, irritability and social withdrawal.

STX209 (also called arbaclofen) stimulates gamma-amino butyric acid type B (GABA-B) receptors, which in turn dampen the excitatory signals that run unchecked in fragile X syndrome. Defects in GABA-B receptors have also been linked to autism.

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