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Positron Emission Tomography (PET) Trial to Evaluate Target Occupancy of CVL-354 at Kappa and Mu Opioid Receptors in Brain Following Oral Dosing

A Phase 1, Open-label Trial to Evaluate Target Occupancy of CVL-354 at Kappa Opioid and Mu Opioid Receptors in Brain Following Single Oral Doses in Healthy Participants Using Positron Emission Tomography

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05547542
Enrollment
19
Registered
2022-09-21
Start date
2023-03-02
Completion date
2024-08-06
Last updated
2025-07-14

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

Conditions

Opioid Use Disorder

Keywords

Healthy adult participants

Brief summary

The primary purpose of this study is to assess the target occupancy at kappa and mu opioid receptors in the brain after single oral doses of CVL-354 in healthy adult participants.

Interventions

Oral solution/capsule

DRUG[11C]-LY2795050

IV injection

DRUG[11C]-carfentanil

IV injection

Sponsors

National Institute on Drug Abuse (NIDA)
CollaboratorNIH
Cerevel Therapeutics, LLC
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

1. Women of nonchildbearing potential and men 18 to 55 years, inclusive, at the time of signing the informed consent form (ICF). 2. Healthy as determined by medical evaluation, including medical and psychiatric history, physical and neurological examinations, ECG, vital sign measurements, and laboratory test results, as evaluated by the investigator. 3. Body mass index of 18.5 to 32.0 kilograms per square meter (kg/m\^2), inclusive, and total body weight \>50 kg (110 pounds \[lb\]) at Screening. 4. Sexually active men with a pregnant or nonpregnant partner of childbearing potential must agree to comply with the following contraception requirements during the trial and for 7 days after the last dose of investigational medicinal product (IMP): • Use condom or remain abstinent. In addition, male participants should not donate sperm for a minimum of 7 days following the last dose of IMP. 5. Capable of giving signed informed consent, which includes compliance with the requirements and restrictions listed in the ICF and in this protocol. 6. Ability, in the opinion of the investigator, to understand the nature of the trial and comply with protocol requirements, including the prescribed dosage regimens, scheduled visits, laboratory tests, and other trial procedures.

Exclusion criteria

1. Current or past history of significant cardiovascular, pulmonary, gastrointestinal, renal, hepatic, metabolic, genitourinary, endocrine (including diabetes mellitus), malignancy (except for basal cell carcinoma of the skin and cervical carcinoma in situ, at the discretion of the investigator), hematological, immunological, neurological, or psychiatric disease that, in the opinion of the investigator or medical monitor, could compromise either participant safety or the results of the trial. 2. Yes responses for any of the following items on the C-SSRS (within the individual's lifetime): * Suicidal Ideation Item 3 (Active Suicidal Ideation with Any Methods \[Not Plan\] without Intent to Act) * Suicidal Ideation Item 4 (Active Suicidal Ideation with Some Intent to Act, without Specific Plan) * Suicidal Ideation Item 5 (Active Suicidal Ideation with Specific Plan and Intent) * Any of the Suicidal Behavior items (Actual Attempt, Interrupted Attempt, Aborted Attempt, Preparatory Acts or Behavior) Yes responses for any of the following items on the C-SSRS (within past 12 months): * Suicidal Ideation Item 1 (Wish to be Dead) * Suicidal Ideation Item 2 (Non-Specific Active Suicidal Thoughts) Serious risk of suicide in the opinion of the investigator is also exclusionary. 3. History of substance or alcohol-use disorder (excluding nicotine or caffeine) as per Diagnostic and Statistical Manual of Mental Disorders (DSM-5) criteria within 12 months prior to signing the ICF. 4. Any condition or surgery that could possibly affect drug absorption, including, but not limited to, bowel resections, bariatric weight loss surgery/procedures, gastrectomy, uncomplicated appendectomy, and cholecystectomy. 5. Receipt of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination or booster within 7 days of planned dosing. In addition, participants who plan to receive SARS-CoV-2 vaccination or booster while participating in the trial or for a minimum of 7 days (to cover at least 5 half-lives of IMP) after the last dose of IMP will be excluded. 6. Have recently been diagnosed with symptomatic coronavirus disease-2019 (COVID-19) or test positive (i.e., using polymerase chain reaction (PCR) or rapid antigen test) for COVID-19 within 30 days prior to signing the ICF. 7. Use of prohibited medication prior to randomization or likely to require prohibited concomitant therapy (e.g., prescription and over-the-counter medications, herbal medications, vitamins, and supplements) during the trial. 8. Positive result for human immunodeficiency virus (HIV) antibody, hepatitis B surface antigen, hepatitis B core antibody, or hepatitis C antibody with detectable viral ribonucleic acid (RNA) levels at Screening. 9. Positive drug screen (including cotinine and tetrahydrocannabinol \[THC\]) or a positive test for alcohol. 10. Any of the following clinical laboratory test results at the Screening Visit or Check-in (Day -1), which can be confirmed by a single repeat measurement, if deemed necessary: * Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) ≥2 × upper limit of normal (ULN). * Total bilirubin \>1.5 × ULN. If Gilbert's syndrome is suspected, total bilirubin \>1.5 × ULN is acceptable if the conjugated or direct bilirubin fraction is \<20% of total bilirubin. 11. Estimated glomerular filtration rate \<90 milliliters per minute (mL/min)/1.73 m\^2, as calculated using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) 2021 equation at the Screening Visit or Check-in (Day -1). Note: Other protocol-defined

Design outcomes

Primary

MeasureTime frame
Kappa Opioid Receptor Occupancy in the Brain Following Single Oral Doses of CVL-354 in Healthy Adult ParticipantsDay 1
Mu Opioid Receptor Occupancy in the Brain Following Single Oral Doses of CVL-354 in Healthy Adult ParticipantsDay 1

Secondary

MeasureTime frameDescription
Number of Participants With Clinically Significant Changes in Vital Sign MeasurementsUp to Day 2
Number of Participants Clinically Significant Changes in Clinical Laboratory AssessmentsUp to Day 2
Number of Participants With Clinically Significant Changes in Physical and Neurological Examination ResultsUp to Day 2
Number of Participants With Treatment-emergent Adverse Events (TEAEs)Up to 18 days
Maximum Observed Plasma Concentration (Cmax) of CVL-354 During ScanDay 1 (1.25, 2.0, and 2.75 hours post dose)
Area Under the Plasma Concentration-time Curve (AUC) of CVL-354 for Scan DurationDay 1 (1.25, 2.0, and 2.75 hours post dose)
Average Plasma Concentration (Cavg) of CVL-354 for Scan DurationDay 1 (1.25, 2.0, and 2.75 hours post dose)
Number of Participants With Suicidal Ideation and Behavior Assessed Using the Columbia-Suicide Severity Rating Scale (C-SSRS)Up to Day 2The C-SSRS includes 'yes' or 'no' responses for assessment of suicidal ideation and behavior as well as numeric ratings for severity of ideation, if present (from 1 to 5, with 5 being the most severe). Greater lethality or potential lethality of suicidal behaviors (endorsed on the behavior subscale) indicates increased risk.
Number of Participants With Clinically Significant Changes in Electrocardiogram (ECG) ResultsUp to Day 2

Countries

United States

Outcome results

None listed

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