Efficacy, Safety and Tolerability Study of ND0612 vs. Oral Immediate Release Levodopa/Carbidopa (IR-LD/CD) in Subjects With Parkinson's Disease Experiencing Motor Fluctuations

This is a phase III multi-center, randomized, active-controlled, double-blind, double-dummy (DBDD), parallel group clinical trial, investigating the efficacy, safety, and tolerability of continuous subcutaneous (SC) ND0612 infusion in comparison to oral IR-LD/CD in subjects with Parkinson's disease (PD) experiencing motor fluctuations. This study is comprised of 6 periods: 1. a Screening Period; 2. an open-label oral IR-LD/CD Adjustment Period; 3. an open-label ND0612 Conversion Period; 4. a randomized DBDD active-controlled Maintenance Period; 5. an optional open-label Treatment Extension; and 6. a Safety Follow-up Period.