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A Study Assessing the Safety and Pharmacokinetic Profile of Modified Release Formulations of Tolcapone

A Phase 1, Single-Part, 6-Period, Sequential, Non-Randomized, Open-Label Study Designed to Evaluate the Pharmacokinetic Profile of Tolcapone Following Administration of Modified Release Prototype Formulations and an Experimental Divided Dose Regimen in Healthy Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03633591
Enrollment
12
Registered
2018-08-16
Start date
2018-06-25
Completion date
2018-10-22
Last updated
2019-01-31

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

Conditions

Healthy Volunteers

Brief summary

The purpose of this study is to assess the pharmacokinetic profiles of tolcapone in healthy subjects after administration of one or two oral doses of multiple modified release prototype formulations.

Interventions

DRUGTolcapone

Multiple doses of tolcapone tablets in the fasted state

DRUGTolcapone Modified Release Prototype

A single dose of tolcapone modified release prototype in the fasted state

DRUGTolcapone Divided Dose

Tolcapone (suspension) in equal divided doses in the fasted state

Sponsors

Quotient Sciences
CollaboratorINDUSTRY
Corino Therapeutics, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy males or non-pregnant, non-lactating healthy females * Age 18 to 65 years of age at the time of signing informed consent * Body mass index (BMI) of 18.0 to 32.0 kg/m2 or, if outside the range, considered not clinically significant by the investigator * Must be willing and able to communicate and participate in the whole study * Must provide written informed consent * Must agree to use an adequate method of contraception

Exclusion criteria

* Subjects who have received any IMP in a clinical research study within the previous 3 months prior to first dose. * Subjects who are study site employees, or immediate family members of a study site or sponsor employee. * Subjects who have previously been enrolled in this study. * History of any drug or alcohol abuse in the past 2 years. * Current smokers and those who have smoked within the last 12 months. A breath carbon monoxide reading of greater than 10 ppm at screening * Current users of e-cigarettes and nicotine replacement products and those who have used these products within the last 12 months * Females of childbearing potential who are pregnant or lactating * Subjects who do not have suitable veins for multiple venepunctures / cannulation as assessed by the investigator at screening * Clinically significant abnormal biochemistry, hematology or urinalysis as judged by the investigator * Hemoglobin below the lower limit of normal * ALT or AST outside the normal reference range at screening or admission. * Confirmed positive drugs of abuse test result * Positive hepatitis B surface antigen (HBsAg), hepatitis C virus antibody (HCV Ab) or human immunodeficiency virus (HIV) results * History of clinically significant cardiovascular, neurological, renal, hepatic, chronic respiratory or gastrointestinal disease, or psychiatric disorder, as judged by the investigator * Subjects with a history of cholecystectomy or gall stones * Serious adverse reaction or serious hypersensitivity to any drug, the formulation excipients, or lactose intolerance * Presence or history of clinically significant allergy requiring treatment, as judged by the investigator. * Donation or loss of greater than 400 mL of blood within the previous 3 months * Subjects who are taking, or have taken, any prescribed or over-the-counter drug or herbal remedies in the 14 days before IMP administration. * Contraindication for Tasmar® * Failure to satisfy the investigator of fitness to participate for any other reason NOTE: Other inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Pharmacokinetic Assessment: Plasma half-life (t1/2)Pre-dose to 24 hours post-dosePlasma half-life (t1/2)
Pharmacokinetic Assessment: Time to maximum concentration (Tmax)Pre-dose to 24 hours post-doseTime to maximum concentration (Tmax)
Pharmacokinetic Assessment: Maximum observed concentration (Cmax)Pre-dose to 24 hours post-doseMaximum observed concentration (Cmax)
Pharmacokinetic Assessment: Area under the curve (AUC)Pre-dose to 24 hours post-doseArea under the curve (AUC)
Pharmacokinetic Assessment: Relative bioavailability (Frel)Pre-dose to 24 hours post-doseRelative bioavailability (Frel)

Secondary

MeasureTime frameDescription
Pharmacokinetic Assessment of 3-O-Methyltolcapone: Time to maximum concentration (Tmax)Pre-dose to 24 hours post-doseTime to maximum concentration (Tmax)
Number of subjects reporting treatment-related Adverse Events (AEs)Screening to 10 days following last doseAbnormalities in safety laboratory tests, vital signs, electrocardiogram, physical examination that meet the protocol definition will be captured as AEs
Pharmacokinetic Assessment of 3-O-Methyltolcapone: Area under the curve (AUC)Pre-dose to 24 hours post-doseArea under the curve (AUC)
Pharmacokinetic Assessment of 3-O-Methyltolcapone: Maximum observed concentration (Cmax)Pre-dose to 24 hours post-doseMaximum observed concentration (Cmax)
Pharmacokinetic Assessment of 3-O-Methyltolcapone: Plasma half-life (t1/2)Pre-dose to 24 hours post-dosePlasma half-life (t1/2)
Pharmacokinetic Assessment of 3-O-Methyltolcapone: Relative Bioavailability (Frel)Pre-dose to 24 hours post-doseRelative Bioavailability (Frel)

Countries

United Kingdom

Outcome results

None listed

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