FDA Approves Onapgo for Parkinson's Motor Fluctuations

Supernus will make Onapgo  available in the second quarter of 2025 with a support team of experts, including a robust nurse education program, and access support at launch.

“Continuous subcutaneous apomorphine infusion already has a proven and established 30-year history in Europe, where it has helped deliver more consistent control of motor fluctuations for thousands of patients,” said Rajesh Pahwa, M.D., Laverne and Joyce Rider Professor of Neurology at the University of Kansas School of Medicine, Director of the Movement Disorder Program at The University of Kansas Health System, and a clinical trial investigator for Onapgo. “In a clinical trial in Europe, patients treated with Onapgo experienced a significant reduction in daily OFF time and a similar significant increase in GOOD ON time. Today’s approval of Onapgo means patients in the U.S. who are not responding well to their current treatment regimen, including levodopa, will now have the option of using a small and lightweight wearable device to deliver a continuous infusion without the need for an invasive surgical procedure.”

The approval is based on results from a Phase III, 12-week, multicenter, parallel-group, double-blind, randomized, placebo-controlled study (N=107) evaluating the efficacy and safety of Onapgo. The primary efficacy endpoint was the mean change in total daily OFF time assessed from baseline to the end of the 12-week treatment period based on patient diaries. The key secondary endpoints were the mean change in daily GOOD ON time, which was defined as ON time without troublesome dyskinesia, and Patient Global Impression of Change (PGIC).

“Onapgo represents a novel approach for adults with Parkinson’s disease who are experiencing motor fluctuations,” said Jack Khattar, President and CEO of Supernus Pharmaceuticals. “Supernus’ significant experience in CNS has fueled the success of more than eight widely recognized products in CNS and other therapeutic categories. The addition of Onapgo demonstrates our continued commitment to developing novel alternatives to manage Parkinson’s disease and other neurological conditions.”

"As Parkinson’s disease progresses, levodopa treatment often becomes less effective at delivering consistent motor control in part due to GI dysmotility, variable absorption of oral medication, and the resulting pulsatile stimulation of dopamine pathways in the brain," said Stuart Isaacson, M.D., Director of Parkinson’s Disease and Movement Disorders Center of Boca Raton, Florida, and a clinical trial investigator for Onapgo "With Onapgo, the continuous infusion of apomorphine directly stimulates postsynaptic dopamine receptors with no metabolic conversion needed. In addition, the subcutaneous delivery of apomorphine bypasses the GI tract and enters the brain, which can allow for more predictable symptom improvement."

“As the motor symptoms of Parkinson’s disease worsen over time, patients report alternating states between ON when their medication is working, and OFF when it’s not working optimally,” said Andrea Merriam, CEO of the Parkinson & Movement Disorder Alliance. “These on-again, off-again changes are disruptive and can happen at any time, which is why consistent daily control of OFF time is key to improving how patients feel and move. For many, continuous treatment options like Onapgo can help to make days with Parkinson’s more predictable.”