A Study to Test the Safety, Tolerability, and Pharmacokinetics of UCB0599 in Healthy Study Participants and Patients With Parkinson's Disease (PD)

Exclusion Criteria

• •Study participant has a known hypersensitivity to any components of the study medication or comparative drugs as stated in this protocol
• •Study participant has a known relevant allergy, a pre-existing history of a relevant allergic condition, or a predisposition for an allergic reaction (ie, total immunoglobulin E \[IgE\] value above normal range at Screening); this study participant's inclusion should be discussed with the Medical Monitor
• •Study participant has a history of levodopa-induced motor fluctuations or dyskinesia expected to interfere with his/her ability to participate in the study
• •Study participant has ongoing significant inflammatory gastrointestinal disorders and/or clinical signs of significant gastrointestinal problems at Screening
• •Study participant has a historic brain scan (MRI scan or CT scan) or an MRI scan performed at Screening indicative of a clinically significant abnormality
• •Study participant has a diagnosis of a significant Central nervous system (CNS) disease other than PD or history of epilepsy or seizure disorder other than febrile seizures as a child
• •Abnormalities in lumbar spine previously known or determined by a screening lumbar x-ray (if conducted)
• •History of clinically significant back pain, back pathology, and/or back injury (for example, degenerative disease, spinal deformity, or spinal surgery) that may predispose participant to complications or technical difficulty with lumbar puncture
• •Evidence or history of significant active bleeding or coagulation disorder or use of drugs that affect coagulation or platelet function within 14 days prior to lumbar catheter insertion
• •Current or chronic history of liver disease, or known hepatic or biliary abnormalities (with the exception of Gilbert's syndrome or asymptomatic gallstones)
• •Study participant has a history or present condition of respiratory or cardiovascular disorders at Screening (eg, cardiac insufficiency, coronary heart disease, uncontrolled hypertension, arrhythmia, tachyarrhythmia, or myocardial infarction) which is considered clinically significant by the Investigator
• •Study participant has medical history or current diagnosis of diabetes
• •Study participant has clinical significant electrocardiogram (ECG) abnormality at Screening, in the opinion of the Investigator
• •Study participant has had prior treatment with an investigational vaccine for PD (including active immunization or passive immunotherapy with monoclonal antibodies)
• •Study participant has had prior surgical treatment of PD involving intracranial surgery or implantation of a device (including deep brain stimulation) or duodopa