Addex Therapeutics, a leading company pioneering allosteric modulation-based drug discovery and development, announced that the US Food and Drug Administration (FDA) has granted orphan drug designation to dipraglurant for the treatment of levodopa-induced dyskinesia associated with Parkinson’s disease (PD-LID). Orphan drug status provides Addex with a number of benefits including reduced development costs and seven years US market exclusivity from launch. Dipraglurant is a novel small molecule inhibitor of the metabotropic glutamate receptor 5 (mGluR5) that has successfully completed Phase II proof-of-concept testing in Parkinson's disease (PD) patients suffering from debilitating levodopa-induced dyskinesia (LID), an indication that has no approved treatment options. Addex is currently conducting an mGlu5 receptor occupancy clinical trial and is preparing to start a Phase III pivotal trial in PD-LID.

