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Study to Assess How ABBV-951 is Absorbed When Administered at Different Subcutaneous Sites of Adult Participants With Parkinson's Disease

Parkinson's Disease: A Comparative Study of Levodopa and Carbidopa Bioavailability Following Foslevodopa/Foscarbidopa Infusion at Different Subcutaneous Sites in Parkinson's Disease Patients

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05094050
Enrollment
16
Registered
2021-10-26
Start date
2022-01-18
Completion date
2023-03-17
Last updated
2023-03-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Parkinson's Disease

Keywords

Parkinson's Disease, Foslevodopa/foscarbidopa, ABBV-951, Levodopa (LD), Carbidopa (CD)

Brief summary

Parkinson's disease (PD) is a neurological condition, which means it affects the brain. This study will evaluate how ABBV-951 is absorbed under the skin of participants with PD when administered to arm, thigh and flank compared to the abdomen. ABBV-951 is an investigational drug being developed for the treatment of PD. Study doctors randomly assign participants to 1 of 4 groups, called treatment arms. Each treatment arm receives ABBV-951 administered in a different order in the arm, high, flank and abdomen. Approximately 12 adult participants over 30 years with a diagnosis of PD will be enrolled in approximately 10 sites in the United States. Participants will receive continuous (24hours/day) subcutaneous infusion of ABBV-951 for 2 consecutive days for each infusion site (arm, thigh, flank and abdomen), for a total duration of treatment up to 12 days. There may be higher treatment burden for participants in this trial compared to their standard of care. Participants will be confined at a hospital or clinic. The effect of the treatment will be checked by medical assessments, blood tests, checking for side effects and completing questionnaires. Adverse events will be monitored throughout the study.

Interventions

Continuous Subcutaneous Infusion (CSCI)

Sponsors

AbbVie
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
30 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Diagnosis of idiopathic Parkinson's disease (PD) that is Levodopa-responsive. * Must be taking a minimum of 400 mg/day of levodopa equivalents (LE) and be judged by the investigator to have motor symptoms inadequately controlled by current therapy. * Must have recognizable/identifiable Off and On states (motor fluctuations), and have a minimum daily average of 2.5 hours of Off time (with a minimum of 2 hours of Off time each day).

Exclusion criteria

\- History of significant skin conditions or disorders (e.g., psoriasis, atopic dermatitis, etc.) or evidence of recent sunburn, acne, scar tissue, tattoo, open wound, branding, or colorations that in the investigator's opinion would interfere with the infusion of the study drug or could interfere with study assessments.

Design outcomes

Primary

MeasureTime frameDescription
Maximum Observed Plasma Concentration (Cmax) of Levodopa (LD)Up to 8 DaysMaximum observed plasma concentration (Cmax) of Levodopa (LD).
Area Under the Plasma Concentration-Time Curve (AUC) for the 24-hour Interval of LDUp to 8 DaysArea under the plasma concentration-time curve (AUC) for the 24-hour interval of LD.
Minimum Observed Plasma Concentration (Cmin) of LDUp to 8 DaysMinimum observed plasma concentration (Cmin) of LD.
Degree of Fluctuation (DFL) of LDUp to 8 DaysDFL = (Cmax-Cmin)/(average plasma concentration).
Swing of LDUp to 8 DaysSwing = (Cmax-Cmin)/Cmin.
Maximum Observed Plasma Concentration (Cmax) of Carbidopa (CD)Up to 8 DaysMaximum observed plasma concentration (Cmax) of CD.
Area Under the Plasma Concentration-Time Curve (AUC) for the 24-hour Interval of CDUp to 8 DaysArea under the plasma concentration-time curve (AUC) for the 24-hour interval of CD.
Minimum Observed Plasma Concentration (Cmin) of CDUp to 8 DaysMinimum observed plasma concentration (Cmin) of CD.
Degree of Fluctuation (DFL) of CDUp to 8 DaysDFL = (Cmax-Cmin)/(average plasma concentration).
Swing of CDUp to 8 DaysSwing = (Cmax-Cmin)/Cmin.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026