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Study of Oral ABBV-932 Capsules to Evaluate Dopamine D2 and D3 Receptor Occupancy in Brain in Adult Healthy Volunteers

An Open-Label Positron Emission Tomography (PET) Study to Evaluate the Dopamine D2 and D3 Receptor Occupancy in the Brain After Multiple Doses of ABBV-932

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06300580
Acronym
Ph1PET UK Stdy
Enrollment
11
Registered
2024-03-08
Start date
2024-08-21
Completion date
2025-05-26
Last updated
2025-06-05

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

Conditions

Healthy Volunteers

Keywords

Healthy Volunteers, ABBV-932

Brief summary

The main objective of this study is to evaluate the dopamine D2 and D3 receptor occupancy in the brain as measured by PET with radiotracer \[11C\]-(+)-PHNO up to 14 days of once-daily oral doses of ABBV-932 in healthy subjects. ABBV-932 is a dopamine D3 receptor-preferring D3/D2 receptor partial agonist. Approximately 12 adult healthy volunteers will be enrolled in the United Kingdom. Participants will receive ABBV-932 oral capsules once daily for 2 weeks and followed for 60 days. Participants will be confined for approximately 15 days. Participants will receive 3 \[11C\]-(+)-PHNO PET scans during the study. Adverse Events and blood tests will be performed.

Interventions

Oral Capsule

Sponsors

AbbVie
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
23 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Body Mass Index (BMI) is \>= 18.0 to \<= 35.0 kg/m2. * Supine pulse rate \>= 50 bpm and \<= 100 bpm obtained after a 5-minute rest at Screening. * Supine systolic blood pressure (SBP) \<= 160 mm Hg and \>= 90 mm Hg and supine diastolic blood pressure (DBP) \<= 90 mm Hg and obtained after a 5-minute rest at Screening.

Exclusion criteria

* Orthostatic (SBP decrease of \>= 30 mmHg, DBP decrease of \>= 20 mmHg, or pulse increase of \>= 30 bpm) as determined after standing for 5 minutes. * Current or history of suicidal ideation as indicated by answering Yes answer to Suicidal Ideation Questions #4 or #5 on the Columbia-Suicide Severity Rating Scale (C-SSRS) at Screening in the past 3 months or any Yes answer to Suicidal Behavior Questions #1-5 in the past year. Non-suicidal self-injurious behavior is not exclusionary. * History of suicide attempt(s) within 1 year prior to study drug administration as evidenced by answering Yes to any Suicidal Behavior Questions (a Yes to Non-Suicidal Self-Injurious Behavior is not exclusionary). * Contraindications to MRIs (metal implants, paramagnetic objects contained within the body, claustrophobia, etc.) * Clinically significant findings as determined from screening brain MRI. * History of previous radiation exposure for research purposes such that participation in this study will result in cumulative ionizing radiation exposure \>10 mSv in the past 12 months, in additional to normal background exposure.

Design outcomes

Primary

MeasureTime frameDescription
Change in Dopamine Receptor Occupancy in Brain Measured by Positron Emission Tomography (PET)Up to approximately 14 daysDopamine D2 and D3 Receptor Occupancy in the brain up to Day 14 after multiple doses of ABBV-932 will be measured by PET. The occupancies will be determined by evaluating the difference in the binding potential (BPND) measured between baseline and post-dose scans in various brain regions.
Number of Participants with Adverse Events (AEs)Up to approximately 74 daysAn AE is defined as any untoward medical occurrence in a patient or clinical investigation participant administered a pharmaceutical product which does not necessarily have a causal relationship with this treatment.

Countries

United Kingdom

Outcome results

None listed

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