The primary objective of the study is to evaluate the safety and tolerability of a range of single BIIB054 doses, administered as a single intravenous (IV) infusion, in healthy participants and participants with early Parkinson's disease (PD). Secondary objectives of the study are to assess the serum pharmacokinetics (PK) profile of BIIB054 after single-dose administration and to evaluate the immunogenicity of BIIB054 after single-dose administration.
Only healthy participants will be enrolled in Cohorts 1 through 6. Only participants with early PD will be enrolled in Cohort 7
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
66
Research Site
Washington D.C., District of Columbia, United States
Research Site
Hallandale, Florida, United States
Research Site
Oviedo, Florida, United States
Research Site
Evansville, Indiana, United States
Adverse events/serious adverse events (AEs/SAEs),
After a range of single BIIB054 doses administered as a single IV infusion in healthy participants and participants with early Parkinson's Disease, clinical laboratory test data, vital signs, neurological and physical examination findings, 12-lead electrocardiogram (ECG) data, and brain magnetic resonance imaging (MRI) findings will be used in the evaluation of AEs/SAEs.
Time frame: 20 Weeks
Columbia Suicide Severity Rating Scale (C-SSRS)
The Columbia Suicide Severity Rating Scale, or C-SSRS, is a suicidal ideation rating scale created by researchers at Columbia University to evaluate suicidality.
Time frame: 20 Weeks
Montreal Cognitive Assessment (MoCA)
The Montreal Cognitive Assessment MoCA is a brief cognitive screening tool for Mild Cognitive Impairment.
Time frame: 20 Weeks
Evaluate serum BIIB054 concentrations and PK parameters
Area under the concentration-time curve (AUC) from time zero extrapolated to infinity (0-∞), AUC from time 0 to time of the last measurable concentration (AUC0-tlast), maximum concentration (Cmax), time to Cmax (Tmax), elimination half-life (t1/2), and clearance (Cl), will be used to assess the serum PK profile of BIIB054 after single-dose administration.
Time frame: 20 Weeks
evaluation of anti-BIIB054 antibodies in serum
evaluate the immunogenicity of BIIB054 after single-dose administration
Time frame: 20 Weeks
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Research Site
Farmington Hills, Michigan, United States
Research Site
Durham, North Carolina, United States
Research Site
Cleveland, Ohio, United States
Research Site
Dallas, Texas, United States
Research Site
Spokane, Washington, United States