Parkinson’s Disease (PD) is a progressive neurodegenerative disorder that affects predominantly dopamine-producing (dopaminergic) neurons, resulting in declining dopamine levels and ensuing symptoms such as shaking, stiffness, difficulty with walking, balance and coordination. As still no cure is available, virtually all PD patients undergo efficient symptomatic treatment with levodopa as the gold standard, which restores dopamine levels thereby controlling some of the symptoms. Nevertheless, chronic levodopa treatment through intermittently delivered oral doses is associated with medium-term motor complications, while its currently available continuous intra-intestinal delivery − though entailing a reduction in motor complications − requires invasive surgery with potential related adverse effects.

“Given the side-effects of the current levodopa delivery systems, an alternative method to administer the treatment continuously and in a non-invasive manner while minimising motor side effects remains an important unmet medical need in the treatment of Parkinson’s Disease”, states Dr Guy Berchem, Deputy Director of Research at CHL.

In this context, SCOL aims to evaluate whether the novel DopaFuse System, developed by the pharmaceutical company SynAgile, can reduce the fluctuation of levodopa levels in the blood, compared to the standard intermittent oral delivery of levodopa tablets. The clinical trial will also assess whether the system is safe, well tolerated and effective in relieving motor symptoms.

Specifically, the DopaFuse Delivery System is a non-invasive, intra-oral system that continuously releases a levodopa paste at a controlled rate directly in the back of the patient’s mouth. It consists of a dental retainer, its case and a single-use drug container.

The SCOL trial will recruit a total of 30 patients across the 3 participating countries, up to 10 of whom will be included in Luxembourg. The study visits will take place at the neurology department of the CHL. The study will run with the support of LIH’s Transversal Translational Medicine (TTM) team and rely on the clinical research expertise of the LIH Clinical and Epidemiological Investigation Centre (CIEC). Individuals above the age of 30 with a confirmed PD diagnosis and a good response to levodopa are eligible to participate. Participation in the study will last 29 days.

At the beginning of the study, participants will be hospitalised at CHL for 3 days to receive a combination of standard oral levodopa tablets and DopaFuse treatment. They will subsequently pursue the therapy from home until day 14, before being hospitalised for another day for additional treatment evaluations. Safety assessments and follow-ups will then take place at home until the end of the trial. Regular monitoring visits are foreseen throughout the duration of the study at CHL, with the assistance of the LIH TTM and CIEC teams. Clinical data and blood samples will also be collected as part of the trial.