ACADIA Pharmaceuticals Inc. announced that the U.S. Food and Drug Administration (FDA) has approved NUPLAZID (pimavanserin) for the treatment of hallucinations and delusions associated with Parkinson’s disease psychosis. In 2014, the FDA designated NUPLAZID as a Breakthrough Therapy for this condition.
NUPLAZID is the first and only medicine to be approved by the FDA for this indication. NUPLAZID is also the only drug approved by the FDA that preferentially targets 5-HT2A receptors. These receptors are thought to play an important role in Parkinson’s disease psychosis. The unique pharmacology of NUPLAZID establishes a new class of drug - selective serotonin inverse agonists (SSIA) - by not only preferentially targeting 5-HT2A receptors but also avoiding activity at dopamine and other receptors commonly targeted by antipsychotics.
Typical Parkinson’s disease therapy consists of drugs that stimulate dopamine to treat patients’ motor symptoms such as tremor, muscle rigidity and difficulty with walking. NUPLAZID does not interfere with patients’ dopaminergic therapy and therefore does not impair their motor function.
