A Study to Determine the Abuse Potential of Tozadenant Relative to D-Amphetamine and Placebo When Administered Orally in Healthy, Non-Dependent, Recreational Polydrug Users

NCT ID: NCT03200080

Last Updated: 2018-08-13

Basic Information

• Recruitment Status: TERMINATED
• Clinical Phase: PHASE1
• Total Enrollment: 26 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2017-09-18
• Study Completion Date: 2017-11-28

Brief Summary

This will be a single-dose, randomized, double-blind, active- and placebo-controlled, double dummy, 6-way crossover study to determine the abuse potential of tozadenant relative to d-amphetamine and placebo, when administered orally in healthy non-dependent, recreational polydrug users with stimulant experience, under fed conditions.

Each subject will participate in a medical Screening visit, a 4-day (3-night) qualification (drug discrimination) visit, six 3-day (2-night) treatment periods, and a follow-up visit.

Detailed Description

The Qualification Phase will be conducted as a single, 4-day visit. Doses will be administered in a randomized, double-blind crossover manner following administration of a standard low-fat meal. Subjects will be dosed with 20 mg of d-amphetamine or matching placebo d-amphetamine on Day 1 and Day 2, approximately 24 hours apart. PD assessments will be conducted before dosing and at time points for up to 8 hours post dosing. Safety assessments will be conducted before dosing and for at least 24 hours following dosing. Data will be reviewed to determine subject eligibility.

The last drug administration in the Qualification Phase and the first drug administration in the Treatment Phase will be separated by a washout interval of at least 7 days and not to exceed 28 days.

During the Treatment Phase, there will be 6 treatment periods; subjects will receive a single oral dose of each of the following treatments with applicable matching oral placebos in a randomized, double-blind, double-dummy fashion following the administration of a standard, low-fat meal. The following treatments will be administered:

• Treatment A: placebo (matched to tozadenant and d-amphetamine)
• Treatment B: tozadenant 120 mg
• Treatment C: tozadenant 240 mg
• Treatment D: tozadenant 480 mg
• Treatment E: d-amphetamine 20 mg
• Treatment F: d-amphetamine 40 mg

Drug administration will occur on Day 1 of each of the 6 treatment periods. PD and PK assessments will be collected during the 24 hours post-dose and safety assessments will be collected during the 36 hours post-dose. Subjects will be discharged on Day 2, after approximately 36 hours post-dose, or remain at the clinical research unit longer (e.g., 48 hours or until the following morning) if there are safety concerns, at the discretion of the investigator or designee. Drug administration in each treatment period will be separated by a washout interval of at least 7 days after the last dose of study drug.

Subjects will return for an end-of-study safety Follow-up visit approximately 7 to 14 days after the subject's last study drug dose in the Treatment Phase or following early withdrawal.

Conditions

Abuse Potential

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: OTHER
• Blinding Strategy: TRIPLE

Study Groups

Treatment A

Placebo oral tablet and Placebo oral capsule

Group Type: PLACEBO_COMPARATOR

Placebo oral tablet

Intervention Type: DRUG

2, 4, 6 or 8 Tozadenant matching placebo tablets

Placebo oral capsule

Intervention Type: DRUG

2 or 4 capsules, each containing d-amphetamine matching over-encapsulated PLACEBO 200 mg lactose tablet

Treatment B

Tozadenant 120 mg

Group Type: EXPERIMENTAL

Tozadenant

Intervention Type: DRUG

2, 4, 6 or 8 Tozadenant 60 mg tablets

Placebo oral capsule

Intervention Type: DRUG

2 or 4 capsules, each containing d-amphetamine matching over-encapsulated PLACEBO 200 mg lactose tablet

Treatment C

Tozadenant 240 mg

Group Type: EXPERIMENTAL

Tozadenant

Intervention Type: DRUG

2, 4, 6 or 8 Tozadenant 60 mg tablets

Placebo oral capsule

Intervention Type: DRUG

2 or 4 capsules, each containing d-amphetamine matching over-encapsulated PLACEBO 200 mg lactose tablet

Treatment D

Tozadenant 480 mg

Group Type: EXPERIMENTAL

Tozadenant

Intervention Type: DRUG

2, 4, 6 or 8 Tozadenant 60 mg tablets

Placebo oral capsule

Intervention Type: DRUG

2 or 4 capsules, each containing d-amphetamine matching over-encapsulated PLACEBO 200 mg lactose tablet

Treatment E

d-amphetamine 20 mg

Group Type: ACTIVE_COMPARATOR

Placebo oral tablet

Intervention Type: DRUG

2, 4, 6 or 8 Tozadenant matching placebo tablets

d-amphetamine

Intervention Type: DRUG

2 or 4 capsules, each containing 2 over-encapsulated d-amphetamine 5 mg tablets

Treatment F

d-amphetamine 40 mg

Group Type: ACTIVE_COMPARATOR

Placebo oral tablet

Intervention Type: DRUG

2, 4, 6 or 8 Tozadenant matching placebo tablets

d-amphetamine

Intervention Type: DRUG

2 or 4 capsules, each containing 2 over-encapsulated d-amphetamine 5 mg tablets

Interventions

Tozadenant

2, 4, 6 or 8 Tozadenant 60 mg tablets

Intervention Type: DRUG

Placebo oral tablet

2, 4, 6 or 8 Tozadenant matching placebo tablets

Intervention Type: DRUG

d-amphetamine

2 or 4 capsules, each containing 2 over-encapsulated d-amphetamine 5 mg tablets

Intervention Type: DRUG

Placebo oral capsule

2 or 4 capsules, each containing d-amphetamine matching over-encapsulated PLACEBO 200 mg lactose tablet

Intervention Type: DRUG

Other Intervention Names

SYN115

Eligibility Criteria

Inclusion Criteria

• Healthy male or female subjects 18 to 55 years of age, inclusive.
• Have a body mass index (BMI) within the range of 18.0 to 30.0 kg/m2 and a minimum weight of at least 50.0 kg
• Current recreational polydrug users who self-report to:

• Have used stimulants (e.g., amphetamines, cocaine, methylphenidate) for non-therapeutic purposes (i.e., for psychoactive effects) at least 10 times in the past year and at least 1 time in the 8 weeks before Screening.
• Have at least 10 lifetime uses of drugs (e.g., opioids, sedatives) from at least 1 other class other than alcohol.
• Agree to use an approved method of contraception
• Be willing and able to abide by all study requirements and restrictions
• Additional criteria may apply

Exclusion Criteria

• Substance or alcohol dependence within the past 2 years,
• Clinically significant medical history or illness
• Female subjects who have a positive pregnancy test, are currently pregnant or lactating, or who are planning to become pregnant within 30 days of last study drug administration.
• Donation or loss of more than 500 mL whole blood within 30 days preceding the Screening visit.
• Additional criteria may apply.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 55 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Acorda Therapeutics

INDUSTRY

Sponsor Role: collaborator

Biotie Therapies Inc.

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Michael McDonnell, MD

Role: PRINCIPAL_INVESTIGATOR

INC Research Toronto

Locations

INC Research Toronto, Inc.

Toronto, Ontario, Canada

Countries

Canada

Other Identifiers

TOZ-CL09

Identifier Type: -

Identifier Source: org_study_id